# MistakeBook vs TacticalStudy

The clearest difference is in-app purchases: TacticalStudy at none against MistakeBook's 1. TacticalStudy also leads on update cadence (every 3 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MistakeBook sells 1 in-app purchase, starting at $0.99 per 6 months. TacticalStudy asks for nothing beyond the download.

MistakeBook ships an update every 2 weeks, TacticalStudy every 3 days. The most recent releases landed on October 3, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | MistakeBook | TacticalStudy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 72 MB | 6 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Wei Shuo Wu](https://appshunter.io/developer/527929940) | [Yutaka Mochida](https://appshunter.io/developer/1868628237) |

## What reviewers say

### MistakeBook

[App page](https://appshunter.io/ios/app/mistakebook/id6757340127)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MistakeBook訂閱方案 | $0.99 | per 6 months |


### TacticalStudy

[App page](https://appshunter.io/ios/app/tacticalstudy/id6757744235)

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

**In-app purchases:** none


## Frequently asked questions

### Is MistakeBook free?

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

### Is TacticalStudy free?

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

### Do MistakeBook or TacticalStudy have ads?

Neither MistakeBook nor TacticalStudy shows ads.

### Which is updated more often, MistakeBook or TacticalStudy?

MistakeBook ships an update every 2 weeks, and TacticalStudy every 3 days. Most recently, MistakeBook was updated on October 3, 2026 and TacticalStudy on September 28, 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.*