# 電卓 vs Keisan Memo

The clearest difference is in-app purchases: 電卓 at none against Keisan Memo's 1. 電卓 also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Keisan Memo sells 1 one-off in-app purchase. 電卓 asks for nothing beyond the download.

電卓 ships an update every 5 days, Keisan Memo weekly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 電卓 | Keisan Memo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Weekly |
| Size | 1 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [eisuke yoshikawa](https://appshunter.io/developer/1894588067) | [丽佳 施](https://appshunter.io/developer/1894580777) |

## What reviewers say

### 電卓

[App page](https://appshunter.io/ios/app/calcnote/id6762538775)

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

**In-app purchases:** none


### Keisan Memo

[App page](https://appshunter.io/ios/app/keisan-memo-calc-notepad/id6791201696)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Lifetime) | $0.99 | one-time |


## Frequently asked questions

### Is 電卓 free?

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

### Is Keisan Memo free?

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

### Do 電卓 or Keisan Memo have ads?

Keisan Memo shows ads; 電卓 does not.

### Which is updated more often, 電卓 or Keisan Memo?

電卓 ships an update every 5 days, and Keisan Memo weekly. Most recently, 電卓 was updated on October 31, 2026 and Keisan Memo on November 5, 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.*