# Thetis Tools vs Tab ToDo

The clearest difference is in-app purchases: Thetis Tools at none against Tab ToDo's 1. Thetis Tools 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. Tab ToDo sells 1 in-app purchase, starting at $1.49 per year. Thetis Tools asks for nothing beyond the download.

Thetis Tools ships an update every 7 months, Tab ToDo every 4 months. The most recent releases landed on October 26, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Thetis Tools | Tab ToDo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 4 months** |
| Size | 50 MB | 30 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thetis srl](https://appshunter.io/developer/397584184) | [Haruya Nakamura](https://appshunter.io/developer/1482524589) |

## What reviewers say

### Thetis Tools

[App page](https://appshunter.io/ios/app/thetis-tools/id1460268980)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tab ToDo

[App page](https://appshunter.io/ios/app/tab-todo/id1519566137)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tab To Do Premium | $1.49 | per year |


## Frequently asked questions

### Is Thetis Tools free?

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

### Is Tab ToDo free?

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

### Do Thetis Tools or Tab ToDo have ads?

Tab ToDo shows ads; Thetis Tools does not.

### Which is updated more often, Thetis Tools or Tab ToDo?

Thetis Tools ships an update every 7 months, and Tab ToDo every 4 months. Most recently, Thetis Tools was updated on October 26, 2026 and Tab ToDo on October 20, 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.*