# Dicter vs MistakeBook

The clearest difference is price: MistakeBook at Free against Dicter's $1.99. Dicter's advantage is in-app purchases (none vs 1) and device support (4 vs 2). On update cadence and ads there is nothing between them.

MistakeBook is free to download; Dicter costs $1.99 up front. MistakeBook sells 1 in-app purchase, starting at $0.99 per 6 months. Dicter asks for nothing beyond the download.

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

## The numbers

| Metric | Dicter | MistakeBook |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Freemium | — |
| Size | 35 MB | 72 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SeungHyeon Lee](https://appshunter.io/developer/1581552085) | [Wei Shuo Wu](https://appshunter.io/developer/527929940) |

## What reviewers say

### Dicter

[App page](https://appshunter.io/ios/app/dicter/id6753685328)

This app uses the Ebbinghaus forgetting curve theory to send timely review reminders for learned material. It features an AI assistant for definitions and questions, and allows easy saving of text from any app to create study cards. Tailored content is available for various learning goals.

**Highlights:** Spaced repetition learning based on forgetting curve, AI-generated definitions and explanations, Save text from any app to create flashcards, Customizable learning content for different goals, Interactive learning and AI-powered Q&A

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Dicter free?

Dicter costs $1.99, with no in-app purchases.

### Is MistakeBook free?

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

### Do Dicter or MistakeBook have ads?

Neither Dicter nor MistakeBook shows ads.

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

Dicter ships an update every 3 weeks, and MistakeBook every 2 weeks. Most recently, Dicter was updated on October 2, 2026 and MistakeBook on October 3, 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.*