# Book Yappy vs Promise

The clearest difference is in-app purchases: Promise at none against Book Yappy's 2. Promise also leads on update cadence (every 3 days vs every 10 days). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Book Yappy sells 2 in-app purchases, starting at $3.99 per month. Promise asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Book Yappy against 5.0 for Promise. Both are backed by a comparable volume of ratings — 4 and 4 respectively.

Book Yappy ships an update every 10 days, Promise every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Book Yappy | Promise |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/book-yappy-reading-tracker/id6747359808/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/promise-screen-time-control/id6772737353/reviews) |
| Number of ratings | 4 | 4 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 3 days** |
| Monetization | Freemium | **Free** |
| Size | 73 MB | 33 MB |
| Requires iOS | **17.2** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Fajar Dirham](https://appshunter.io/developer/1597228456) | [JAKUB ELIAS](https://appshunter.io/developer/6772737355) |

## What reviewers say

### Book Yappy

[App page](https://appshunter.io/ios/app/book-yappy-reading-tracker/id6747359808)

This app helps you track your reading progress, stay motivated, and build consistent reading habits. Engage with virtual book characters and analyze your reading data. A subscription unlocks advanced features like data syncing and more character interactions.

**Highlights:** Reading habit tracking, Reading motivation tools, Book character chat, Reading data analysis, Note taking, Data syncing (subscription)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BookYap Plus Monthly | $3.99 | per month |
| BookYap Plus Yearly | $29.99 | per year |


### Promise

[App page](https://appshunter.io/ios/app/promise-screen-time-control/id6772737353)

This app helps you reduce screen time and digital distractions with playful app blocking and focus routines. It features a cute companion that keeps you accountable, offering gentle warnings before blocking access to distracting applications.

**Highlights:** Block distracting apps, Reduce screen time, Set app limits, Focus routines, Soft warnings before blocks, Track screen time and usage, Build healthier phone habits

**In-app purchases:** none


## Frequently asked questions

### Is Book Yappy free?

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

### Is Promise free?

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

### Which has better reviews, Book Yappy or Promise?

Book Yappy and Promise are both rated 5.0 out of 5 on the App Store, from 4 and 4 ratings respectively.

### Do Book Yappy or Promise have ads?

Neither Book Yappy nor Promise shows ads.

### Which is updated more often, Book Yappy or Promise?

Book Yappy ships an update every 10 days, and Promise every 3 days. Most recently, Book Yappy was updated on October 30, 2026 and Promise on October 31, 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.*