# CalcMemo929 vs Retro Calc

The clearest difference is in-app purchases: Retro Calc at none against CalcMemo929's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. CalcMemo929 sells 1 one-off in-app purchase. Retro Calc asks for nothing beyond the download.

CalcMemo929 ships an update every 2 weeks, Retro Calc every 3 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | CalcMemo929 | Retro Calc |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 1 MB | 0 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YOSHIHIRO TAKAHASHI](https://appshunter.io/developer/574193873) | [Shuji Okuno](https://appshunter.io/developer/6784051738) |

## What reviewers say

### CalcMemo929

[App page](https://appshunter.io/ios/app/calcmemo929/id6451918962)

This app combines a simple calculator with note-taking capabilities, allowing users to solve math problems and save calculation processes as memos for easy reference. Its user-friendly interface and clear display enhance the learning and work experience.

**Highlights:** Intuitive user interface, Clear display of calculations, Save calculations as memos, Full-screen number display in landscape, Supports learning and work tasks

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $0.49 | one-time |


### Retro Calc

[App page](https://appshunter.io/ios/app/retro-calc-simple-calculator/id6784051736)

**In-app purchases:** none


## Frequently asked questions

### Is CalcMemo929 free?

CalcMemo929 is free to download, with in-app purchases available.

### Is Retro Calc free?

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

### Do CalcMemo929 or Retro Calc have ads?

Neither CalcMemo929 nor Retro Calc shows ads.

### Which is updated more often, CalcMemo929 or Retro Calc?

CalcMemo929 ships an update every 2 weeks, and Retro Calc every 3 weeks. Most recently, CalcMemo929 was updated on November 3, 2026 and Retro Calc on October 31, 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.*