# Todo Flow vs Soul Diary

The clearest difference is ads: Todo Flow at none against Soul Diary's shown. Soul Diary's advantage is iOS requirement (13.0 vs 16). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Todo Flow ships an update every 3 weeks, Soul Diary fortnightly. The most recent releases landed on September 13, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Todo Flow | Soul Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 40 MB | 48 MB |
| Requires iOS | 16 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [Chengdu Dance Elephant Technology Co., LTD.](https://appshunter.io/developer/1741861571) | [HONG KONG GUANGSHANG TRADING CO.,LIMITED](https://appshunter.io/developer/1786118727) |

## What reviewers say

### Todo Flow

[App page](https://appshunter.io/ios/app/todo-flow-task-reminder/id6670187897)

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

**In-app purchases:** none


### Soul Diary

[App page](https://appshunter.io/ios/app/soul-diary-memory-box/id6739574662)

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

**In-app purchases:** none


## Frequently asked questions

### Is Todo Flow free?

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

### Is Soul Diary free?

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

### Do Todo Flow or Soul Diary have ads?

Soul Diary shows ads; Todo Flow does not.

### Which is updated more often, Todo Flow or Soul Diary?

Todo Flow ships an update every 3 weeks, and Soul Diary fortnightly. Most recently, Todo Flow was updated on September 13, 2026 and Soul Diary on September 8, 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.*