# DIY Sun Science vs Planet Fun

The clearest difference is update cadence: Planet Fun at every 4 weeks against DIY Sun Science's every 6 months. Planet Fun also leads on rating (4.8 vs 4.4). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Planet Fun holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 21 and 8 respectively.

DIY Sun Science ships an update every 6 months, Planet Fun every 4 weeks. The most recent releases landed on June 3, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | DIY Sun Science | Planet Fun |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (21 ratings)](https://appshunter.io/ios/app/diy-sun-science/id836712493/reviews) | **[4.8 (8 ratings)](https://appshunter.io/ios/app/planet-fun/id1525941640/reviews)** |
| Number of ratings | **21** | 8 |
| Positive reviews | 91.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 134 MB | 161 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Lawrence Hall of Science](https://appshunter.io/developer/462994550) | [Omar reis](https://appshunter.io/developer/687921629) |

## What reviewers say

### DIY Sun Science

[App page](https://appshunter.io/ios/app/diy-sun-science/id836712493)

Explore the Sun through hands-on activities and real-time data. This app offers 15 engaging experiments, live solar images from NASA, and educational videos to foster understanding of solar science for families and educators.

**Highlights:** 15 hands-on solar activities, Step-by-step instructions, Live Sun images from NASA SDO, NASA Earth and space observatory images, NASA solar videos, Learn about solar activity

**Features:** macOS Compatibility

**In-app purchases:** none


### Planet Fun

[App page](https://appshunter.io/ios/app/planet-fun/id1525941640)

Explore a 4D solar system simulation with accurate astronomical calculations for planets, moons, and stars. Interact with the celestial bodies using touch gestures, set any date and time, and even view your GPS position in augmented reality.

**Highlights:** 4D solar system simulation, Configurable animation speed, Augmented reality mode, Almanac module with ephemeris calculators, Touch gesture controls, Star and constellation visualization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DIY Sun Science free?

DIY Sun Science is free to download, with no in-app purchases.

### Is Planet Fun free?

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

### Which has better reviews, DIY Sun Science or Planet Fun?

Planet Fun is rated higher. DIY Sun Science averages 4.4 out of 5 from 21 ratings, while Planet Fun averages 4.8 from 8 ratings.

### Do DIY Sun Science or Planet Fun have ads?

Neither DIY Sun Science nor Planet Fun shows ads.

### Which is updated more often, DIY Sun Science or Planet Fun?

DIY Sun Science ships an update every 6 months, and Planet Fun every 4 weeks. Most recently, DIY Sun Science was updated on June 3, 2026 and Planet Fun on June 4, 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.*