# DutyFlow vs 21Seven

The clearest difference is device support: 21Seven at 3 against DutyFlow's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | DutyFlow | 21Seven |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 16 MB | 60 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [OrcaGroup](https://appshunter.io/developer/1046828969) | [21south](https://appshunter.io/developer/1263850897) |

## What reviewers say

### DutyFlow

[App page](https://appshunter.io/ios/app/dutyflow/id1444017871)

**In-app purchases:** none


### 21Seven

[App page](https://appshunter.io/ios/app/21seven/id6738125577)

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

**In-app purchases:** none


## Frequently asked questions

### Is DutyFlow free?

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

### Is 21Seven free?

21Seven is free to download, with no in-app purchases.

### Do DutyFlow or 21Seven have ads?

Neither DutyFlow nor 21Seven shows ads.

### Which is updated more often, DutyFlow or 21Seven?

DutyFlow ships an update every 2 months, and 21Seven every 2 months. Most recently, DutyFlow was updated on September 9, 2026 and 21Seven on September 17, 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.*