# Flex Counter vs Keisan Memo

The clearest difference is in-app purchases: Flex Counter at none against Keisan Memo's 1. Flex Counter also leads on iOS requirement (14.0 vs 17.0). On price there is nothing between them.

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

## The numbers

| Metric | Flex Counter | Keisan Memo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Weekly |
| Size | 24 MB | 5 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [KEISHI TAJIMA](https://appshunter.io/developer/1872332940) | [丽佳 施](https://appshunter.io/developer/1894580777) |

## What reviewers say

### Flex Counter

[App page](https://appshunter.io/ios/app/flex-counter/id6758333089)

**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 Flex Counter free?

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

### Is Keisan Memo free?

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

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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.*