# TaskFlow vs SixDo

The clearest difference is in-app purchases: TaskFlow at none against SixDo's 1. SixDo's advantage is iOS requirement (16.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

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

TaskFlow ships an update every 3 weeks, SixDo every 4 weeks. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | TaskFlow | SixDo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Size | 3 MB | 32 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yusuke Nakashima](https://appshunter.io/developer/1864561664) | [mami hara](https://appshunter.io/developer/6792413290) |

## What reviewers say

### TaskFlow

[App page](https://appshunter.io/ios/app/taskflow-and/id6762625500)

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

**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 | $3.99 | one-time |


## Frequently asked questions

### Is TaskFlow free?

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

### Is SixDo free?

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

### Do TaskFlow or SixDo have ads?

Neither TaskFlow nor SixDo shows ads.

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

TaskFlow ships an update every 3 weeks, and SixDo every 4 weeks. Most recently, TaskFlow was updated on November 5, 2026 and SixDo on November 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*