# Nautilus vs UC Exp Tracker

The clearest difference is in-app purchases: UC Exp Tracker at none against Nautilus's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Nautilus sells 3 in-app purchases, starting at $3.99 per month. UC Exp Tracker asks for nothing beyond the download.

Nautilus ships an update every 11 days, UC Exp Tracker weekly. The most recent releases landed on November 14, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Nautilus | UC Exp Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (3.2K ratings)](https://appshunter.io/ios/app/nautilus-web-word-annotate/id1422480068/reviews)** | — |
| Number of ratings | **3.2K** | — |
| Positive reviews | 48.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | Freemium | — |
| Size | 502 MB | 3 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Kairoos Solutions SL](https://appshunter.io/developer/978066434) | [Ahmed Alzarooni](https://appshunter.io/developer/1784077781) |

## What reviewers say

### Nautilus

[App page](https://appshunter.io/ios/app/nautilus-web-word-annotate/id1422480068)

This research-focused browser allows users to read the web, annotate pages, and interact with AI for summaries and explanations. It also facilitates document creation and organization, syncing across devices.

**Highlights:** Web browsing with research tools, AI-powered page summarization and translation, Direct annotation on web pages, Export markup as PDF or Word, Read and annotate PDFs, Document drafting and organization, AI writing assistance

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nautilus Unlock All and AI | $3.99 | per month |
| Nautilus Unlock All and AI | $14.99 | per year |
| Nautilus Pro Lifetime | $14.99 | one-time |

**What reviewers like**

- 🚀 Excellent note-taking app
- 📁 Great folder organization
- 🎨 Customizable notebook covers
- 🔍 Useful PDF annotation tools
- 🤖 Impressive AI capabilities

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🔄 Sync and file transfer issues
- 🕰️ Slow performance and lag
- 🔒 Poor customer support
- 💰 Misleading upgrade pricing

**Reported bugs**

- Notes randomly disappearing
- Formatting issues with text and images
- Unreliable audio recording and playback
- Compatibility problems with newer iOS versions
- Inability to transfer files between free and pro versions

**Requested features**

- Handwriting recognition
- Improved eraser and shape tools
- Customizable keyboard and toolbar
- Better integration with cloud storage
- Ability to rotate and resize images


### UC Exp Tracker

[App page](https://appshunter.io/ios/app/uc-exp-tracker/id6761727658)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Nautilus free?

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

### Is UC Exp Tracker free?

UC Exp Tracker is free to download, with no in-app purchases.

### Do Nautilus or UC Exp Tracker have ads?

Neither Nautilus nor UC Exp Tracker shows ads.

### Which is updated more often, Nautilus or UC Exp Tracker?

Nautilus ships an update every 11 days, and UC Exp Tracker weekly. Most recently, Nautilus was updated on November 14, 2026 and UC Exp Tracker on November 9, 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.*