# Quartrix vs WhatToDo

The clearest difference is in-app purchases: Quartrix at none against WhatToDo's 2. WhatToDo's advantage is iOS requirement (15.1 vs 17.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. WhatToDo sells 2 in-app purchases, starting at $1.99 per month. Quartrix asks for nothing beyond the download.

Quartrix ships an update weekly, WhatToDo every 4 days. The most recent releases landed on October 18, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Quartrix | WhatToDo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Size | 1 MB | 40 MB |
| Requires iOS | 17.5 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OOMOOL CREATIVE](https://appshunter.io/developer/954863654) | [Yeong Ho Jeong](https://appshunter.io/developer/464028296) |

## What reviewers say

### Quartrix

[App page](https://appshunter.io/ios/app/quartrix-todo-for-balance/id6738711519)

**Features:** macOS Compatibility

**In-app purchases:** none


### WhatToDo

[App page](https://appshunter.io/ios/app/whattodo-focus-timer-and-tasks/id6753144313)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $1.99 | per month |
| Annual Premium Subscription | $12.99 | per year |


## Frequently asked questions

### Is Quartrix free?

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

### Is WhatToDo free?

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

### Do Quartrix or WhatToDo have ads?

Neither Quartrix nor WhatToDo shows ads.

### Which is updated more often, Quartrix or WhatToDo?

Quartrix ships an update weekly, and WhatToDo every 4 days. Most recently, Quartrix was updated on October 18, 2026 and WhatToDo on October 13, 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.*