# Astrophysics I vs Rocket Logs

The clearest difference is update cadence: Rocket Logs at every 10 days against Astrophysics I's every 3 months. Rocket Logs also leads on chart position (#121 vs unranked) and iOS requirement (15.1 vs 18.6). Astrophysics I's advantage is rating (4.4 vs 4.0) and price ($3.99 vs $7.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Astrophysics I costs $3.99 and Rocket Logs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Astrophysics I holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: Astrophysics I has 9 ratings behind it against 1, so its average is the more settled of the two.

Astrophysics I ships an update every 3 months, Rocket Logs every 10 days. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Astrophysics I | Rocket Logs |
| --- | --- | --- |
| Price | **$3.99** | $7.99 |
| Rating | **[4.4 (9 ratings)](https://appshunter.io/ios/app/astrophysics-i/id449455262/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/rocket-logs/id6752035826/reviews) |
| Number of ratings | **9** | 1 |
| Positive reviews | 48.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#121** |
| Size | 249 MB | 36 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Xavier Daxhelet](https://appshunter.io/developer/339056993) | [Braden Carlson](https://appshunter.io/developer/1837984822) |

## What reviewers say

### Astrophysics I

[App page](https://appshunter.io/ios/app/astrophysics-i/id449455262)

Explore the solar system with over 90 screens and 40 3D animations explaining astrophysics concepts. Ideal for teachers to use in classrooms, it covers gravity, planetary details, and astronomical constants.

**Highlights:** Solar system coverage, Astrophysics explanations, 3D animations, Classroom projection feature, Detailed topic lists, Physical and astronomical constants

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

**In-app purchases:** none


### Rocket Logs

[App page](https://appshunter.io/ios/app/rocket-logs/id6752035826)

**Currently charting:** #121 Top Paid · Reference (US App Store)

Manage your hobby rocket models, log flights with detailed metrics, and access live analytics. Includes handy tools like a BP calculator and exportable checklists for team coordination. No login or internet required.

**Highlights:** Model management, Flight logging, Live analytics, BP calculator, Exportable checklists, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Astrophysics I free?

Astrophysics I costs $3.99, with no in-app purchases.

### Is Rocket Logs free?

Rocket Logs costs $7.99, with no in-app purchases.

### Which has better reviews, Astrophysics I or Rocket Logs?

Astrophysics I is rated higher. Astrophysics I averages 4.4 out of 5 from 9 ratings, while Rocket Logs averages 4.0 from 1 ratings.

### Do Astrophysics I or Rocket Logs have ads?

Neither Astrophysics I nor Rocket Logs shows ads.

### Which is updated more often, Astrophysics I or Rocket Logs?

Astrophysics I ships an update every 3 months, and Rocket Logs every 10 days. Most recently, Astrophysics I was updated on October 14, 2026 and Rocket Logs on October 16, 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.*