# Smart Slide Rule vs ポケット手帳

The clearest difference is price: ポケット手帳 at Free against Smart Slide Rule's $0.99. ポケット手帳 also leads on update cadence (weekly vs every 2 months). Smart Slide Rule's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 16.0). On ads and in-app purchases there is nothing between them.

ポケット手帳 is free to download; Smart Slide Rule costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Smart Slide Rule ships an update every 2 months, ポケット手帳 weekly. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Smart Slide Rule | ポケット手帳 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-slide-rule/id975047971/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | — |
| Size | 4 MB | 21 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sohta Itoh](https://appshunter.io/developer/965803614) | [Kento Takise](https://appshunter.io/developer/1553271381) |

## What reviewers say

### Smart Slide Rule

[App page](https://appshunter.io/ios/app/smart-slide-rule/id975047971)

This app simulates a mechanical analog calculating tool, offering various logarithmic scales for multiplication, division, and trigonometric functions. It includes instructions on how to use the slide rule, making it a learning tool for this historical device.

**Highlights:** Simulates a slide rule, Includes A, B, C, CI, D, S, L, T, and K scales, Moveable slide strip and cursor, Instructions on slide rule usage, Calculates multiplication, division, and functions

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

**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 Smart Slide Rule free?

Smart Slide Rule costs $0.99, 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 Smart Slide Rule or ポケット手帳 have ads?

Neither Smart Slide Rule nor ポケット手帳 shows ads.

### Which is updated more often, Smart Slide Rule or ポケット手帳?

Smart Slide Rule ships an update every 2 months, and ポケット手帳 weekly. Most recently, Smart Slide Rule was updated on October 9, 2026 and ポケット手帳 on October 2, 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.*