# Chunk: AI Research Assistant — Knowledge Base, Notes & Agents > AI research assistant for web, documents, and notes with advanced AI models. (iPhone/iPad app by Curious Minds Software, LLC.) - Source: https://appshunter.io/ios/app/chunk-ai-research-assistant/id6472682763 (this page in markdown: same URL + `.md`) - Developer: [Curious Minds Software, LLC](https://appshunter.io/developer/1686764894) - Category: Productivity, Reference - Price: Free with in-app purchases - Rating: 4.40/5 from 32 App Store ratings · 13 written reviews indexed - Age rating: 12+ - Requires: iOS 18.4 · 165 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, European Spanish - Released: 2024-01-30 - Data updated: 2026-08-21 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/chunk-ai-research-assistant/id6472682763/reviews.md ## What is Chunk? Chunk — Your Second Brain, Switched On One AI workspace where cutting edge AI Models from GPT, Claude, and Gemini answer from YOUR notes, PDFs, videos, and research — with citations you can tap. Save anything, ask anything, automate the rest. EVERY FRONTIER AI MODEL, ONE APP • Chat with OpenAI GPT-5.6 (Sol, Terra & Luna), Anthropic Claude Opus 5 & Sonnet 5, and Google Gemini 3.1 Pro • Switch models mid-conversation — no model lock-in, no juggling separate AI chat apps • Free plan includes everyday AI chat, every day ANSWERS WITH RECEIPTS • Connected Chat quotes your own notes, documents, and saved pages — tap a citation, see the source • @-mention any note, document, or collection to bring it into the conversation • Intelligent web search with clear, clickable citations for every fact SAVE ANYTHING FROM ANYWHERE • Capture links, PDFs, screenshots, and stray thoughts into your Inbox — two taps from any app • Clip from your browser or forward emails straight into Chunk • Everything lands searchable, connected, and ready to ask about TURN VIDEOS INTO FLASHCARDS • Convert YouTube videos, lectures, podcasts, audio, webpages, and PDFs into Artifacts: transcripts, summaries, flashcards, quizzes, and concept maps • Build study guides and exam prep from your actual course material NOTES WITH BACKLINKS & A KNOWLEDGE GRAPH • Full Markdown note editor with [[wiki links]] and backlinks — build a personal wiki • Related notes resurface automatically while you research • AI writing tools: grammar, tone, translation, summarizing, creative rewriting DEEP RESEARCH REPORTS IN MINUTES • Cited research reports — from quick outlines to comprehensive deep research • Bibliographies in APA, MLA, Chicago, or Harvard format AUTOMATIONS THAT WORK WHILE YOU SLEEP • Standing agents re-run your research, watch prices and pages, and digest your notes on a schedule • Wake up to fresh, cited digests filed into your workspace YOUR LIBRARY + AI MEMORY • Upload textbooks, papers, and contracts — ask questions across a 3,000-page document library • Organize sources into Collections and chat with an entire project at once • AI memory personalizes every answer — you see, edit, and control everything it remembers CREATE IMAGES — generate visuals for presentations, study aids, and social posts with GPT-Image and Gemini. EVERYWHERE YOU WORK — iPhone, iPad, Mac, and Apple Vision Pro, always in sync. Start on your phone, finish on your Mac. PRIVATE BY DESIGN — your data is never sold and never used to train AI models. Export everything, anytime. Your notes stay yours, free or not. Built for students crushing homework and exam prep, researchers writing cited papers, professionals analyzing documents and monitoring markets, and writers turning reading into output. Free to start — no demo mode, the free plan does real work. Chunk Pro unlocks every frontier model, unlimited deep research, automations at scale, and the full document library, with a free trial on the yearly plan. Terms of Service: https://www.chunkapp.com/tos Privacy Policy: https://www.chunkapp.com/privacy ## Key features - AI-powered web and document search - Access to multiple premium AI models - Document and notes management with iCloud sync - AI-generated image creation and editing - Academic and professional writing assistance - Homework and study support - Research report generation with citations ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Annual Chunk Subscription | $99.99 | per year | | Weekly Subscription | $6.99 | per 7 days | | Monthly Subscription | $14.99 | per month | | Chunk Annual Subscription | $149.99 | per year | | Chunk Monthly Subscription | $19.99 | per month | | Chunk AI Notes - Annual Sub | $99.99 | per year | | Weekly Chunk Subscription | $4.99 | per 7 days | | Monthly Chunk Subscription | $9.99 | per month | | Annual Chunk Subscription | $69.99 | per year | | Annual Chunk Subscription | $99.99 | per year | | Monthly Chunk AI Subscription | $9.99 | per month | | Weekly Chunk AI Subscription | $4.99 | per 7 days | | Annual Chunk Subscription | $69.99 | per year | ## Recent user reviews (10 of 13) All indexed reviews: https://appshunter.io/ios/app/chunk-ai-research-assistant/id6472682763/reviews.md ### 2/5 — Ehh it’s tough to import information in *2025-12-28* I should have never subscribed but alas here we are. The good: - clean UI - nice MacOS counterpart - built in LLMs do work The bad: - it is very hard to get information into this app on iOS. With respect to each productivity app I’ve used, I always import 10 or so random stock related files (in different formats) to see how the app handles the uploads. Well, unfortunately, the only information i was successfully able to import was an Apple note and a URL. Had no luck with PDFs, .jpegs, sharing from X, sharing from email, sharing from files or from photos. …..and that’s when i gave up interest because if you can’t easily import and export information into an PKM or second brain app, then it serves no purpose. See HyNote….it is hands down the best all encompassing productivity tool on the market - across any device or platform - but it’s harddddd to get information into it for processing (and out of it for incorporation into a larger note system). Recall is probably the second best tool but it just doesn’t have a great iOS UI and doesn’t have a macOS app. **Developer response:** I'm not sure what happened with your experience. I'm deeply sorry you had such a poor first impression of Chunk. One of the things that makes our app special is the ability to upload lots of documents and files to Chunk and search them easily. I wish you would've reached out to us so we could've made things right for you and fix any issues you were having. We'd love to have you back if you're willing to give us another chance. We had a day or two of outages last month that you may have just been unfortunate enough to use at those times. Again I'm sorry this happened to you, if you do try Chunk again, please send me an email if you have ANY issues or questions. Thanks - James founder of Chunk AI ### 2/5 — Ehh it’s tough to import information in *2025-12-07* I should have never subscribed but alas here we are. The good: - clean UI - nice MacOS counterpart - built in LLMs do work The bad: - it is very hard to get information into this app on iOS. With respect to each productivity app I’ve used, I always import 10 or so random stock related files (in different formats) to see how the app handles the uploads. Well, unfortunately, the only information i was successfully able to import was an Apple note and a URL. Had no luck with PDFs, .jpegs, sharing from X, sharing from email, sharing from files or from photos. …..and that’s when i gave up interest because if you can’t easily import and export information into an PKM or second brain app, then it serves no purpose. See HyNote….it is hands down the best all encompassing productivity tool on the market - across any device or platform - but it’s harddddd to get information into it for processing (and out of it for incorporation into a larger note system). Recall is probably the second best tool but it just doesn’t have a great iOS UI and doesn’t have a macOS app. ### 1/5 — Duped by the Aesthetically Please UI *2025-12-05* Nearly impossible to get information/files/anything into this app on iOS which, in turn, makes it pointless across the Apple ecosystem. Waste of $ ### 5/5 — Powerful AI Companion *2025-07-13* I have used a lot of AI tools and this is the best I have used to date!! ### 5/5 — Amazing *2025-05-17* I started using this app for grad school and it has seriously changed how I study. I have ADHD and usually get overwhelmed trying to keep track of everything I read, especially for technical subjects. Chunk helps me slow down and actually think through what I am reading. It lets me focus on the important stuff without getting distracted or lost. It feels like it was made by someone who actually gets how hard reading can be when your brain is bouncing all over the place. I use it pretty much every day now. It is simple, clean, and really useful. If you do a lot of reading or research and struggle to stay organized or focused, this is worth trying. ### 2/5 — Often Confuses Itself *2025-04-08* After submitting the first query, every subsequent follow-up will break the display interface. New questions will show up randomly on top of old answers, or vice versa. For anything but the most simple instruction the API simply times out and spits back a word-salad of error messages. **Developer response:** I’m deeply sorry you had this experience. I’m not sure what was happening but I’d like to rectify this if possible. If you care to email us we’d love to help you figure why this occurred. We assure you this isn’t typical of what our thousands of users typically experience on a daily basis. We value you as a user and hope you give us another shot. Please send me an email: info@chunkapp.com ### 1/5 — Bunk would be better name *2025-03-17, version 1.9.5* Keeps showing error happened —- costly error for my hard earned money !!! Comprende senior?? ### 4/5 — Helpful. *2024-09-03* Excellent for automatically finding the answers I need. Its smart search features make the research process so much easier, saving me valuable time. Only problem is the “Research search mode” isn’t working correctly as of now. ### 2/5 — Not finding information within your own documents *2024-08-06* I’m not sure what to truly think about this app. It’s a great concept, allowing you to store your notes and documents within the app. The idea is that you will be able to find specific information by chatting with the built-in AI. In concept, the app is designed to give you information specific to your notes per your request or query while also supplementing it with any relevant information based on its online search. So in concept, you would be able to cheery your notes well being supported by additional online information. But this is where it fails. Anytime I’ve asked for specific information which is very clearly found within the documents I uploaded to the app, it returns a response, stating nothing is found within my notes or documents that matches my query. **Developer response:** Thank you for trying out Chunk. We'd love to help you with your issue. There could be a few reasons you maybe having issues get answers returned about your stored notes or documents. Making sure your query contains keywords/phrases in the documents you're referring to. Adding tags to documents would help narrow down the search if you've uploaded large amounts of documents. Please refer to our tutorial videos at https://www.chunkapp.com/tutorials or email us at info@chunkapp.com and our support team will help you directly. Thank you again for your honest review and hopefully we can get you using Chunk as you seem to like the premise. Cheers! ### 1/5 — data in accuracy *2024-07-10, version 1.5.8* fetching of data inappropriate ## Frequently asked questions about Chunk ### What is Chunk's primary function? Chunk is an AI research assistant designed to help users search and analyze documents, the web, and personal notes. It integrates powerful AI models to assist with writing, reasoning, and image generation, making it a comprehensive tool for research and productivity. ### What AI models does Chunk use? Chunk provides access to premium AI models including Claude 4.6 Opus & Sonnet from Anthropic, OpenAI's ChatGPT-5.2, and Google's Gemini 3.0 Pro. It also features Nano-Banana AI Image models from OpenAI and Gemini for image creation. ### How does Chunk handle citations and research integrity? Chunk provides clear citations and clickable URL links for every fact presented in its responses. This feature is crucial for academic integrity and allows users to easily verify information and check sources. ### Can Chunk help with academic work and homework? Yes, Chunk is perfect for homework help and academic research. It can solve complex problems, upload textbooks as reference sources, create study guides, generate practice questions, and assist with bibliographies in various formats. ### What are the subscription options for Chunk? Chunk offers several subscription plans, including weekly and monthly options for its AI and general subscriptions. Prices range from $4.99 per week to $9.99 per month, providing access to premium features and AI models. ### On which Apple devices can I use Chunk? Chunk is available on a range of Apple devices, including Mac, iPhone, iPad, and the realityDevice. Your data syncs seamlessly across all your Apple devices via iCloud. ### How often is Chunk updated? The latest version of Chunk is 2.3.1, and it was last updated on March 14, 2026. This indicates a recent update, suggesting ongoing development and support for the application. ### What is the age rating for Chunk? Chunk has an age rating of 12+. This suggests that the content and features are considered appropriate for users aged 12 and above. ## Version history (last 5 releases) ### 2.5.4 — 2026-08-10 - Claude Opus 5 and Claude Sonnet 5 - Improved Automations - Personalized chat starters on the new-chat screen - Memory privacy controls: retention windows, export, and delete-all - Full research history, now browsable and searchable ### 2.5.3 — 2026-07-27 New: - Claude Opus 5 and Claude Sonnet 5 - Personalized chat starters on the new-chat screen - Memory privacy controls: retention windows, export, and delete-all - Full research history, now browsable and searchable Improved & fixed: - Saving a chat answer as a note captures the right response - Collections chat against your most recent note content - Research reports survive interruptions; long reports no longer stall the app - Search results reliably open the item you tapped - Faster chat, clearer error messages, and more complete translations ### 2.5.2 — 2026-07-19 Our biggest update yet. Universal Search for all your data + Design updates! Automations — set it once, let Chunk do the work Automations are standing AI agents that keep working while you don't. Set one up in a few taps and Chunk runs it on a schedule, then delivers a clean, cited digest. • Research — re-run any question on a cadence and get only what's new, summarized with sources • Watchers — track a price, a restock, or a page change and get alerted the moment it moves • Digests — a weekly roundup of your own notes, stale-note nudges, and connections you'd have missed • Agent Tasks — hand Chunk a job across your notes and the web; it plans, works, and drops the result straight into a note or report Save to Chunk — capture anything, from anywhere Share a link, article, screenshot, or PDF from any app right into Chunk. Your Inbox files it for you: AI titles it, tags it, and suggests the right folder and note links. Send it to a Collection in one tap, or keep it for later. Works from the Share Sheet, Siri, Shortcuts, and the Action Button — on iPhone, iPad. A warmer new look We've rolled out Paper & Ember — a calmer, more focused design across the whole app, with cleaner cards, better dark mode, and color accents that make everything easier to find. Plus dozens of fixes and refinements across Settings, account management, and overall reliability on iPhone & iPad. ### 2.5.1 — 2026-07-12 Our biggest update yet. Universal Search for all your data + Design updates! Automations — set it once, let Chunk do the work Automations are standing AI agents that keep working while you don't. Set one up in a few taps and Chunk runs it on a schedule, then delivers a clean, cited digest. • Research — re-run any question on a cadence and get only what's new, summarized with sources • Watchers — track a price, a restock, or a page change and get alerted the moment it moves • Digests — a weekly roundup of your own notes, stale-note nudges, and connections you'd have missed • Agent Tasks — hand Chunk a job across your notes and the web; it plans, works, and drops the result straight into a note or report Save to Chunk — capture anything, from anywhere Share a link, article, screenshot, or PDF from any app right into Chunk. Your Inbox files it for you: AI titles it, tags it, and suggests the right folder and note links. Send it to a Collection in one tap, or keep it for later. Works from the Share Sheet, Siri, Shortcuts, and the Action Button — on iPhone, iPad. A warmer new look We've rolled out Paper & Ember — a calmer, more focused design across the whole app, with cleaner cards, better dark mode, and color accents that make everything easier to find. Plus dozens of fixes and refinements across Settings, account management, and overall reliability on iPhone & iPad. ### 2.5.0 — 2026-07-07 Our biggest update yet. Automations — set it once, let Chunk do the work Automations are standing AI agents that keep working while you don't. Set one up in a few taps and Chunk runs it on a schedule, then delivers a clean, cited digest. • Research — re-run any question on a cadence and get only what's new, summarized with sources • Watchers — track a price, a restock, or a page change and get alerted the moment it moves • Digests — a weekly roundup of your own notes, stale-note nudges, and connections you'd have missed • Agent Tasks — hand Chunk a job across your notes and the web; it plans, works, and drops the result straight into a note or report Save to Chunk — capture anything, from anywhere Share a link, article, screenshot, or PDF from any app right into Chunk. Your Inbox files it for you: AI titles it, tags it, and suggests the right folder and note links. Send it to a Collection in one tap, or keep it for later. Works from the Share Sheet, Siri, Shortcuts, and the Action Button — on iPhone, iPad. A warmer new look We've rolled out Paper & Ember — a calmer, more focused design across the whole app, with cleaner cards, better dark mode, and color accents that make everything easier to find. Plus dozens of fixes and refinements across Settings, account management, and overall reliability on iPhone & iPad. ## Apps similar to Chunk | App | Rating | Price | Category | | --- | --- | --- | --- | | [Transcribe Now - AI Note Taker](https://appshunter.io/ios/app/transcribe-now-ai-note-taker/id6478526306) | 4.4 (70) | Free | Productivity | | [AI Agent Email Writer:email.ai](https://appshunter.io/ios/app/ai-agent-email-writeremailai/id6471383103) | 4.6 (60) | Free | Productivity | | [QuickFax - Send Fax from Phone](https://appshunter.io/ios/app/quickfax-send-fax-from-phone/id6449825892) | 4.3 (11) | Free | Productivity | | [Task: To do list](https://appshunter.io/ios/app/task-to-do-list/id6471654166) | 4.4 (8) | Free | Productivity | | [AI Academic Writing & Research](https://appshunter.io/ios/app/ai-academic-writing-and-research/id6504454003) | 4.3 (45) | Free | Productivity | | [AI Agent-4o Writer:write.ai](https://appshunter.io/ios/app/ai-agent-4o-writerwriteai/id6471771434) | 4.6 (98) | Free | Productivity | ## More apps by Curious Minds Software, LLC - [Curious AI - Tutor & Coach](https://appshunter.io/ios/app/curious-ai-tutor-and-coach/id6448877882) All apps by Curious Minds Software, LLC: https://appshunter.io/developer/1686764894 ## Related topics [research assistant](https://appshunter.io/ios/topics/research-assistant) · [chunk](https://appshunter.io/ios/topics/chunk) · [arxivtoprompt](https://appshunter.io/ios/topics/arxivtoprompt) · [briefly by digital science](https://appshunter.io/ios/topics/briefly-by-digital-science) · [ai research](https://appshunter.io/ios/topics/ai-research) · [codexbar](https://appshunter.io/ios/topics/codexbar) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*