Comparison

Open Minis vs ReadOS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Open Minis

This AI agent runs locally on your device, taking actions like browsing the web, managing your schedule, and controlling smart home devices. It integrates deeply with iOS frameworks and allows you to bring your own API keys from various AI providers. Customize its capabilities with a skills system and enjoy persistent memory for a personalized experience.

Highlights
  • On-device AI agent
  • Multi-model AI provider support
  • Deep iOS framework integration
  • Built-in web browser
  • Customizable skills system
  • Persistent memory
  • Siri Shortcuts integration
Features
Read full description

Minis — Local-First On-Device AI Agent Minis is a local-first, on-device AI agent that goes beyond chat. All your data stays on your iPhone — nothing is uploaded to a server by default. Running locally means lower latency and stronger privacy, while the agent still takes real action: browsing the web, accessing your health data, managing your schedule, controlling your smart home, and automating complex tasks. Local-First AI Agent Unlike cloud-only chatbots, Minis runs directly on your device and keeps your data there. The agent executes multi-step tasks autonomously, using tools and native iOS frameworks to get things done — not just answer questions, and not just relay everything to the cloud. Multi-Model, Your Choice Bring your own API key. Choose from leading AI providers: • Anthropic Claude • OpenAI GPT • Google Gemini • DeepSeek • Kimi (Moonshot AI) • OpenRouter • Any OpenAI-compatible endpoint Deep iOS Integration The agent accesses Apple frameworks natively: • HealthKit — steps, heart rate, sleep, workouts, SpO₂ • Calendar & Reminders — create events, check availability, manage tasks • HomeKit — control lights, switches, scenes, and smart accessories • Photos — search, organize, and export from your library • Location & Maps — current location, directions, nearby POIs • Vision — OCR text recognition, object detection, barcode scanning • Speech — real-time transcription and text-to-speech • Weather — current conditions, hourly and daily forecasts Built-in Web Browser Navigate pages, take screenshots, extract content, fill forms, and interact with websites — all driven by the AI agent in the background. Skills System Import or create custom AI skills to extend the agent's capabilities. Share skills with others or build your own for specialized workflows. Persistent Memory The agent remembers your preferences, project context, and recurring patterns across sessions — building a personalized assistant that improves over time, all stored locally on your device. Siri Shortcuts Automate AI tasks with Siri and the Shortcuts app. Send prompts with file attachments, wait for results, and chain into complex workflows — all hands-free. Privacy by Design Your API keys and data stay on-device. Fine-grained permission controls let you decide exactly which personal data the agent can access. No account required. No data collected.

About

ReadOS

This app is an AI-powered workspace for iPad that helps you read, research, and create. It connects your source materials and project context, allowing you to move seamlessly from understanding to creation. Features include AI summarization, knowledge mapping, and document analysis.

Highlights
  • AI-powered research agent
  • Contextual reading and note-taking
  • Knowledge mapping and visualization
  • Document, spreadsheet, and presentation creation
  • Web browsing and data analysis
  • Audio and video transcription
  • Multi-step task automation
Features
Read full description

ReadOS is an all-in-one, desktop-class AI agent workspace for iPad, built around the place serious work often begins: reading. Open a PDF, collect research, inspect evidence, create a report, analyze data, build office files, and continue the task without rebuilding context across separate apps. ReadOS keeps source materials, reading position, selections, files, and project context connected so you can move from understanding to creating. READ WITH CONTEXT • Open PDFs, EPUBs, Markdown, images, local audio and video files, and common office files. • Navigate document structure and page references when the source provides them. • Annotate PDFs, take notes, organize tabs, and export annotated documents. • Build knowledge maps and visual explanations connected to source material. RESEARCH WITH READEX Readex is the AI agent inside ReadOS. When you choose to share content with it, Readex can work with the current document, selected passages, attachments, webpage context, and files in your workspace. Use Readex to: • Summarize and compare source material. • Develop study guides, research plans, and structured notes. • Trace an answer back to relevant pages and context. • Work across multiple files while keeping the research question visible. CREATE, AUTOMATE, AND DELIVER With ReadOS Pro, Readex can help: • Create and edit documents, spreadsheets, and presentations. • Analyze data with Python and JavaScript. • Build charts, tables, interactive visualizations, and knowledge maps. • Browse the web, inspect pages, collect relevant context, and carry out browser tasks. • Transcribe and analyze local audio and video files, extract useful frames, and continue from a playback position. • Carry out multi-step and long-running tasks across available files and tools, with progress you can review and stop. FREE AND PRO ReadOS Free includes library management, local file opening and playback, PDF annotation, notes, navigation, tabs, workspaces, and annotated-PDF export. ReadOS Pro unlocks Readex and advanced AI-assisted work, including browser automation, creation and editing tools, code and data analysis, document and media understanding, and multi-step or long-running tasks. ReadOS Pro is available through Apple In-App Purchase as an auto-renewing annual subscription or a one-time lifetime purchase. ReadOS Pro also requires a supported AI provider account or compatible API connection. Provider subscriptions, usage quotas, and model or API fees are separate and are not included with ReadOS Pro. Availability and results can vary by source format, selected provider or model, network access, and permissions. Start with what you are reading. Keep the context. Build what comes next. TERMS OF USE ReadOS uses Apple's Standard Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Open Minis4 screens
ReadOS3 screens

Verdict

The call

The clearest difference is in-app purchases: Open Minis at none against ReadOS's 2. Open Minis also leads on update cadence (weekly vs monthly) and ratings volume (99 vs 8). On price, rating, review sentiment and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ReadOS sells 2 in-app purchases, starting at $19.99 per year. Open Minis asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ReadOS holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Open Minis has 99 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 96% of Open Minis's written reviews are positive against 100% of ReadOS's.

UpkeepUpdate frequency

Open Minis ships an update weekly, ReadOS monthly. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Open Minis versus ReadOS: the parameters behind the verdict, then further details
ParameterOpen MinisReadOS
PriceFreeFree
Rating4.8 (99 ratings)5.0 (8 ratings) — better
Positive reviews96.1% of reviews100.0% of reviews — better
Number of ratings99 — better8
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better26.0
Further details — not scored
Size398 MB993 MB
Age rating17+17+
Developer森 王秀芳 王

Customer experience

Open Minis

All ratings87 ratings
Positive97.7%
Neutral1.1%
Negative1.1%
Written reviews77 reviews
Positive96.1%
Neutral2.6%
Negative1.3%

ReadOS

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Open Minis

No in-app purchases

2 purchases

ReadOS

Subscriptions1
  • ReadOS Pro Annual7 Days trial$19.991 Year
One-time1
  • ReadOS Pro Lifetime$69.99

Questions

Is Open Minis free?
Open Minis is free to download, with no in-app purchases.
Is ReadOS free?
ReadOS is free to download, with in-app purchases available.
Which has better reviews, Open Minis or ReadOS?
ReadOS is rated higher. Open Minis averages 4.8 out of 5 from 99 ratings, while ReadOS averages 5.0 from 8 ratings.
Do Open Minis or ReadOS have ads?
Neither Open Minis nor ReadOS shows ads.
Which is updated more often, Open Minis or ReadOS?
Open Minis ships an update weekly, and ReadOS monthly. Most recently, Open Minis was updated on November 9, 2026 and ReadOS on October 31, 2026.

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