# ShortMemo vs OTenkeyCalc

The clearest difference is ads: ShortMemo at none against OTenkeyCalc's shown. ShortMemo also leads on iOS requirement (12.0 vs 16.7.10). 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.

ShortMemo ships an update every 9 days, OTenkeyCalc every 2 weeks. The most recent releases landed on October 14, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ShortMemo | OTenkeyCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Size | 92 MB | 37 MB |
| Requires iOS | **12.0** | 16.7.10 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [UT app](https://appshunter.io/developer/1574140718) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### ShortMemo

[App page](https://appshunter.io/ios/app/shortmemo-idea-draft-etc/id6462784133)

**In-app purchases:** none


### OTenkeyCalc

[App page](https://appshunter.io/ios/app/otenkeycalc/id6502439720)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ShortMemo free?

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

### Is OTenkeyCalc free?

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

### Do ShortMemo or OTenkeyCalc have ads?

OTenkeyCalc shows ads; ShortMemo does not.

### Which is updated more often, ShortMemo or OTenkeyCalc?

ShortMemo ships an update every 9 days, and OTenkeyCalc every 2 weeks. Most recently, ShortMemo was updated on October 14, 2026 and OTenkeyCalc on October 27, 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.*