# RedoCalc vs MemoSoon

The clearest difference is update cadence: RedoCalc at every 3 days against MemoSoon's weekly. On price, ads, 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.

RedoCalc ships an update every 3 days, MemoSoon weekly. The most recent releases landed on September 8, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | RedoCalc | MemoSoon |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Size | 3 MB | 8 MB |
| Requires iOS | **18.0** | 18.1 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Toshiyuki Kuwabara](https://appshunter.io/developer/1649322074) | [Tomohiro Fujimura](https://appshunter.io/developer/1744808379) |

## What reviewers say

### RedoCalc

[App page](https://appshunter.io/ios/app/redocalc/id6743318834)

**Features:** macOS Compatibility

**In-app purchases:** none


### MemoSoon

[App page](https://appshunter.io/ios/app/memosoon-0/id6744027313)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RedoCalc free?

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

### Is MemoSoon free?

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

### Do RedoCalc or MemoSoon have ads?

Both RedoCalc and MemoSoon show ads.

### Which is updated more often, RedoCalc or MemoSoon?

RedoCalc ships an update every 3 days, and MemoSoon weekly. Most recently, RedoCalc was updated on September 8, 2026 and MemoSoon on September 19, 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.*