# *CalcMemo vs Stopwatch Library

The clearest difference is in-app purchases: *CalcMemo at none against Stopwatch Library's 1. Stopwatch Library's advantage is update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Stopwatch Library sells 1 one-off in-app purchase. *CalcMemo asks for nothing beyond the download.

*CalcMemo ships an update weekly, Stopwatch Library every 3 days. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | *CalcMemo | Stopwatch Library |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Size | 37 MB | 5 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tomoyuki Fukuzawa](https://appshunter.io/developer/1893263866) | [Naoyuki Hasegawa](https://appshunter.io/developer/6777422704) |

## What reviewers say

### *CalcMemo

[App page](https://appshunter.io/ios/app/calcmemo-calculator-notes/id6762182082)

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

**In-app purchases:** none


### Stopwatch Library

[App page](https://appshunter.io/ios/app/stopwatch-library/id6794338987)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を削除 | $2.99 | one-time |


## Frequently asked questions

### Is *CalcMemo free?

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

### Is Stopwatch Library free?

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

### Do *CalcMemo or Stopwatch Library have ads?

Neither *CalcMemo nor Stopwatch Library shows ads.

### Which is updated more often, *CalcMemo or Stopwatch Library?

*CalcMemo ships an update weekly, and Stopwatch Library every 3 days. Most recently, *CalcMemo was updated on October 14, 2026 and Stopwatch Library on October 13, 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.*