# Omnithink vs Annotate

The clearest difference is in-app purchases: Omnithink at none against Annotate's 1. Omnithink also leads on rating (5.0 vs 4.8) and iOS requirement (15.0 vs 18.2). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Annotate sells 1 one-off in-app purchase. Omnithink asks for nothing beyond the download.

Omnithink holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 5 and 8 respectively.

Omnithink ships an update weekly, Annotate every 4 days. The most recent releases landed on October 12, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Omnithink | Annotate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/omnithink/id6760921753/reviews)** | [4.8 (8 ratings)](https://appshunter.io/ios/app/annotate-screenshot-markup/id6766071404/reviews) |
| Number of ratings | 5 | **8** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 44 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Benyamin Famili](https://appshunter.io/developer/1886828867) | [Timo Josten](https://appshunter.io/developer/521476774) |

## What reviewers say

### Omnithink

[App page](https://appshunter.io/ios/app/omnithink/id6760921753)

This app sends your questions to multiple AI models simultaneously, then analyzes and synthesizes their responses. Get more reliable answers by comparing insights from leading AI like ChatGPT, Gemini, and Claude. Features statement analysis and customizable thinking modes for deeper understanding.

**Highlights:** Multi-model AI comparison, Consensus View of AI responses, Statement analysis for claim verification, Customizable Smart Answer Modes, Side-by-side response views, Export results to PDF, Markdown, Query history and search

**Features:** macOS Compatibility

**In-app purchases:** none


### Annotate

[App page](https://appshunter.io/ios/app/annotate-screenshot-markup/id6766071404)

Quickly enhance screenshots and images with a variety of tools for adding text, shapes, and effects. Features include auto-redaction for sensitive information and animated GIF support. Create polished visuals with layers, templates, and custom styles.

**Highlights:** 17 annotation tools, Animated GIF support, Auto-Redact sensitive info, Customizable styles and layers, Templates for quick reuse, Apple Pencil support, Shortcuts integration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $8.99 | one-time |


## Frequently asked questions

### Is Omnithink free?

Omnithink is free to download, with no in-app purchases.

### Is Annotate free?

Annotate is free to download, with in-app purchases available.

### Which has better reviews, Omnithink or Annotate?

Omnithink is rated higher. Omnithink averages 5.0 out of 5 from 5 ratings, while Annotate averages 4.8 from 8 ratings.

### Do Omnithink or Annotate have ads?

Neither Omnithink nor Annotate shows ads.

### Which is updated more often, Omnithink or Annotate?

Omnithink ships an update weekly, and Annotate every 4 days. Most recently, Omnithink was updated on October 12, 2026 and Annotate on October 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*