# Timebook vs OneTime

The clearest difference is in-app purchases: Timebook at none against OneTime's 4. Timebook also leads on ads (none vs shown) and iOS requirement (15.5 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. OneTime sells 4 in-app purchases, starting at $0.99 per month. Timebook asks for nothing beyond the download.

Timebook ships an update every 3 days, OneTime weekly. Both last shipped on October 1, 2026.

## The numbers

| Metric | Timebook | OneTime |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Size | 148 MB | 65 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Youngsoo Choe](https://appshunter.io/developer/1815445548) | [UNCHAN BAEK](https://appshunter.io/developer/6774037513) |

## What reviewers say

### Timebook

[App page](https://appshunter.io/ios/app/timebook-time-tracker/id6746148794)

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

**In-app purchases:** none


### OneTime

[App page](https://appshunter.io/ios/app/onetime-daily-time-tracker/id6774037511)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Launch Monthly | $0.99 | per month |
| Monthly | $1.99 | per month |
| Token Bundle | $0.99 | one-time |
| Lifetime | $11.99 | one-time |


## Frequently asked questions

### Is Timebook free?

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

### Is OneTime free?

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

### Do Timebook or OneTime have ads?

OneTime shows ads; Timebook does not.

### Which is updated more often, Timebook or OneTime?

Timebook ships an update every 3 days, and OneTime weekly. Most recently, Timebook was updated on October 1, 2026 and OneTime on October 1, 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.*