# Astronomy Logbook vs Launch Your Book

The clearest difference is update cadence: Launch Your Book at every 3 days against Astronomy Logbook's weekly. Launch Your Book also leads on iOS requirement (9.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Astronomy Logbook ships an update weekly, Launch Your Book every 3 days. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Astronomy Logbook | Launch Your Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/astronomy-logbook/id1552320892/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free | — |
| Size | 62 MB | 31 MB |
| Requires iOS | 16.6 | **9.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Krishna Vedala](https://appshunter.io/developer/1546688939) | [Willpower Group LLC](https://appshunter.io/developer/1503155324) |

## What reviewers say

### Astronomy Logbook

[App page](https://appshunter.io/ios/app/astronomy-logbook/id1552320892)

Record astronomical observations with this red-light themed digital logbook. Securely store your notes in the cloud for access anywhere via web or app.

**Highlights:** Red-light themed interface, Digital observation logging, Cloud storage, Web interface access, Secure and private data

**Features:** macOS Compatibility

**In-app purchases:** none


### Launch Your Book

[App page](https://appshunter.io/ios/app/launch-your-book/id1553347175)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Astronomy Logbook free?

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

### Is Launch Your Book free?

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

### Do Astronomy Logbook or Launch Your Book have ads?

Neither Astronomy Logbook nor Launch Your Book shows ads.

### Which is updated more often, Astronomy Logbook or Launch Your Book?

Astronomy Logbook ships an update weekly, and Launch Your Book every 3 days. Most recently, Astronomy Logbook was updated on October 4, 2026 and Launch Your Book on October 7, 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.*