# TaskQuadrant vs SixDo

The clearest difference is in-app purchases: TaskQuadrant at none against SixDo's 1. TaskQuadrant also leads on update cadence (every 2 days vs every 3 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

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

TaskQuadrant ships an update every 2 days, SixDo every 3 weeks. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | TaskQuadrant | SixDo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Size | 24 MB | 32 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Charles Wee](https://appshunter.io/developer/1863837405) | [mami hara](https://appshunter.io/developer/6792413290) |

## What reviewers say

### TaskQuadrant

[App page](https://appshunter.io/ios/app/taskquadrant-task-planner/id6756943665)

**Features:** Family Sharing

**In-app purchases:** none


### SixDo

[App page](https://appshunter.io/ios/app/sixdo-ivy-lee-method-to-do/id6797027631)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SixDo Pro | $6.99 | one-time |


## Frequently asked questions

### Is TaskQuadrant free?

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

### Is SixDo free?

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

### Do TaskQuadrant or SixDo have ads?

Neither TaskQuadrant nor SixDo shows ads.

### Which is updated more often, TaskQuadrant or SixDo?

TaskQuadrant ships an update every 2 days, and SixDo every 3 weeks. Most recently, TaskQuadrant was updated on October 14, 2026 and SixDo on October 4, 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.*