# Nautilus vs Focus Mirror

The clearest difference is in-app purchases: Nautilus at none against Focus Mirror's 3. Nautilus also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Focus Mirror sells 3 in-app purchases, starting at $0.99 per month. Nautilus asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Nautilus | Focus Mirror |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | Every 5 days |
| Size | 36 MB | 8 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [HIROTO IGUCHI](https://appshunter.io/developer/1860756373) | [Takahiro Kimura](https://appshunter.io/developer/6775796488) |

## What reviewers say

### Nautilus

[App page](https://appshunter.io/ios/app/nautilus-focus-and-app-blocker/id6780439827)

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

**In-app purchases:** none


### Focus Mirror

[App page](https://appshunter.io/ios/app/focus-mirror-study-timer/id6815692837)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads Monthly Plan | $0.99 | per month |
| Remove Ads Yearly Plan | $9.99 | per year |
| Remove Ads Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Nautilus free?

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

### Is Focus Mirror free?

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

### Do Nautilus or Focus Mirror have ads?

Focus Mirror shows ads; Nautilus does not.

### Which is updated more often, Nautilus or Focus Mirror?

Nautilus ships an update every 5 days, and Focus Mirror every 5 days. Most recently, Nautilus was updated on October 11, 2026 and Focus Mirror on October 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.*