# TimeFlow vs Lesson Book

The clearest difference is in-app purchases: Lesson Book at none against TimeFlow's 3. Lesson Book also leads on iOS requirement (15.0 vs 17.0). TimeFlow's advantage is update cadence (every 2 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. TimeFlow sells 3 in-app purchases, starting at $2.99 per month. Lesson Book asks for nothing beyond the download.

TimeFlow ships an update every 2 days, Lesson Book every 3 weeks. Both last shipped on November 5, 2026.

## The numbers

| Metric | TimeFlow | Lesson Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Size | 23 MB | 29 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [智涛 钟](https://appshunter.io/developer/6782362909) | [woo jae won](https://appshunter.io/developer/1484191646) |

## What reviewers say

### TimeFlow

[App page](https://appshunter.io/ios/app/timeflow-tutor-planner/id6782528538)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TimeFlow Pro Monthly | $2.99 | per month |
| TimeFlow Pro Yearly | $19.99 | per year |
| TimeFlow Pro Lifetime | $49.99 | one-time |


### Lesson Book

[App page](https://appshunter.io/ios/app/lesson-book-ai-report/id6792389047)

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

**In-app purchases:** none


## Frequently asked questions

### Is TimeFlow free?

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

### Is Lesson Book free?

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

### Do TimeFlow or Lesson Book have ads?

Neither TimeFlow nor Lesson Book shows ads.

### Which is updated more often, TimeFlow or Lesson Book?

TimeFlow ships an update every 2 days, and Lesson Book every 3 weeks. Most recently, TimeFlow was updated on November 5, 2026 and Lesson Book on November 5, 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.*