ChatLLM vs Study852
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChatLLM
Access multiple advanced AI models for chat, content creation, and task automation. Features include an autonomous AI agent, real-time meeting transcription, and voice interaction. Generate images, videos, and code, or analyze documents with this comprehensive AI assistant.
- Autonomous AI agent for complex tasks
- Real-time meeting transcription and insights
- Multi-model AI chat (GPT-5, Opus, Gemini)
- Image and video generation
- Voice chat with multiple AI voices
- AI-powered web research
- Code execution and debugging
Read full descriptionHide full description
ChatLLM – The Most Powerful AI Assistant on Mobile Chat, Create, Listen & Automate with State-of-the-Art AI ChatLLM brings together the world's best AI models — GPT-6.1, Fable 5.1, Opus 5.5, Gemini, DeepSeek, and more — into one app. Chat naturally, generate images and videos, transcribe meetings live, or let the AI Agent autonomously handle complex tasks for you. AGENT — AUTONOMOUS AI AGENT Give the Agent a task and watch it work. It uses multiple AI models, browses the web, writes code, and connects to your tools to complete complex multi-step tasks autonomously. • Research, analyze, and compile reports • Build and deploy websites and apps • Connect to Gmail, Google Drive, Jira, Slack, and more • Track progress with real-time task updates AI LISTENER — REAL-TIME MEETING INTELLIGENCE Record any conversation and get live AI-powered transcription and insights. • Real-time transcription in 100+ languages • AI-generated suggestions while you listen • Automatic session summaries • Custom analysis templates (Key Points, Technical Analysis, or your own) • Chat with AI about any past session • Background recording — switch apps without losing audio ADVANCED AI CHAT Natural, human-like conversations powered by 15+ language models. Ask questions, brainstorm, debug code, or tackle any topic. VOICE CHAT Full voice conversations with AI. Choose from multiple voices, switch between automatic and manual recording modes, and go hands-free. IMAGE & VIDEO GENERATION Turn text into visuals with Nano Banana Pro, FLUX, GPT Image 2.5, Seedream 5, Ideogram, Recraft, and more. Generate videos with Seedance 2.5, Veo 3.1, Kling AI, and Sora 2. DEEP RESEARCH AI-powered web research with source citations. Get comprehensive, multi-source answers to complex questions with real-time activity tracking. CODE EXECUTION Run code directly in chat. Debug, generate snippets, and test ideas with a built-in terminal and playground. DOCUMENT ANALYSIS Upload files for instant summaries, Q&A, and analysis. Supports PDFs, images with OCR, and more. PERSONALIZATION • Custom instructions for tailored responses • Memory system that learns your preferences • Projects to organize conversations and files • Thinking mode for complex reasoning 15+ AI MODELS IN ONE APP GPT-6.1 · Claude Fable 5.1 · Claude Opus 5.5 · Gemini · DeepSeek · Kimi · Grok · Qwen · Perplexity · and more Why Choose ChatLLM? • All the best AI models, one subscription • Multi-modal: Text, Voice, Images, Video, Documents • AI Agent for autonomous task completion • AI Listener for meeting intelligence • SOC-2 and HIPAA compliant — your data stays private This app requires a subscription. Plans start at $9.99/month. Terms of service & privacy policy: https://abacus.ai/terms https://abacus.ai/privacy
Study852
This productivity tool features a timer that plays an 852hz pure tone while active. It's designed to enhance focus during study sessions and can be upgraded for extended timer durations.
- 852hz pure tone playback
- Timer for focus sessions
- Pause and stop functionality
- Extended timer options (PRO)
- No data collection
Read full descriptionHide full description
852hz pure tone plays when you start the timer and stops when the timer ends or you press pause. Perfect for studying and focus. [In App Purchase] PRO: For a one time payment of $2.99, you can set timers longer than 10 minutes up to 3 hours. The purchase is good for lifetime use! [Privacy and Security] This app collects no data. [Terms of Use] EULA Link: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is monetization model: Study852 at free with in-app purchases against ChatLLM's subscription. ChatLLM's advantage is ratings volume (3.7K vs 2). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ChatLLM sells 3 in-app purchases, starting at $9.99 per month and Study852 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.9 for ChatLLM against 5.0 for Study852. That said, the two scores are not equally well evidenced: ChatLLM has 3.7K ratings behind it against 2, so its average is the more settled of the two.
| Parameter | ChatLLM | Study852 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (3.7K ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 63.6% of reviews | — |
| Number of ratings | 3.7K — better | 2 |
| Update frequency | Every 4 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 112 MB | 139 MB |
| Age rating | 12+ | 4+ |
| Developer | Abacus.AI | Daisydoor |
Customer experience
ChatLLM
Study852
Bugs and requests
ChatLLM
Reported bugs
5 issues- Voice chat is not transcribing
- Chats disappearing after re-entering the thread
- App freezing or becoming laggy when generating responses on mobile
- Voice chat not working
- App crashing on mobile
Requested features
11 requests- Add transcript to the headphone mode
- Rename a thread
- Add execution time and other metrics for each request
- Indicate which LLM served the request when using routeLLM
- Add an iPad version
Show 6 moreShow fewer
- Add ability to delete chats on mobile
- Add voice chat and talk back feature
- Improve copy/paste functionality
- Allow selecting text
- Add ability to set default LLM
- Improve font size customization
Study852
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ChatLLM
- Monthly Subscription$9.991 Month
- Monthly subscription$9.991 Month
- Pro Tier$19.991 Month
Study852
- Pro$0.99
Questions
Is ChatLLM free?
Is Study852 free?
Which has better reviews, ChatLLM or Study852?
Do ChatLLM or Study852 have ads?
Other comparisons















