# Simple Calculator *FLAT calc vs ポケット手帳

The clearest difference is update cadence: ポケット手帳 at weekly against Simple Calculator *FLAT calc's every 2 months. Simple Calculator *FLAT calc's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Simple Calculator *FLAT calc ships an update every 2 months, ポケット手帳 weekly. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Simple Calculator *FLAT calc | ポケット手帳 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 10 MB | 21 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Bakerstreet Co., Ltd.](https://appshunter.io/developer/1090599145) | [Kento Takise](https://appshunter.io/developer/1553271381) |

## What reviewers say

### Simple Calculator *FLAT calc

[App page](https://appshunter.io/ios/app/simple-calculator-flat-calc/id1392010421)

**Features:** macOS Compatibility

**In-app purchases:** none


### ポケット手帳

[App page](https://appshunter.io/ios/app/id6471104584)

**In-app purchases:** none


## Frequently asked questions

### Is Simple Calculator *FLAT calc free?

Simple Calculator *FLAT calc is free to download, with no in-app purchases.

### Is ポケット手帳 free?

ポケット手帳 is free to download, with no in-app purchases.

### Do Simple Calculator *FLAT calc or ポケット手帳 have ads?

Neither Simple Calculator *FLAT calc nor ポケット手帳 shows ads.

### Which is updated more often, Simple Calculator *FLAT calc or ポケット手帳?

Simple Calculator *FLAT calc ships an update every 2 months, and ポケット手帳 weekly. Most recently, Simple Calculator *FLAT calc was updated on October 26, 2026 and ポケット手帳 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.*