# Solar System Planets vs MathStack

Solar System Planets and MathStack are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Solar System Planets sells 3 in-app purchases, starting at $9.99 per month and MathStack sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Solar System Planets | MathStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (10 ratings)](https://appshunter.io/ios/app/solar-system-planets-3d-space/id6463002338/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 150 MB | 75 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Evgeniya Senchurova](https://appshunter.io/developer/1676838995) | [Nicholas Gee](https://appshunter.io/developer/1877593811) |

## What reviewers say

### Solar System Planets

[App page](https://appshunter.io/ios/app/solar-system-planets-3d-space/id6463002338)

Explore our solar system with interactive 3D models and detailed information about each planet. Discover celestial bodies and uncover their secrets through a user-friendly interface, perfect for students and space enthusiasts alike.

**Highlights:** Interactive 3D solar system model, High-resolution planet imagery, Detailed planet information, User-friendly interface, Educational content, Celestial body exploration

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Premium Access | $9.99 | per month |
| Three Months Premium Access | $19.99 | per 3 months |
| One Year Premium Access | $24.99 | per year |


### MathStack

[App page](https://appshunter.io/ios/app/mathstack-stack-and-solve/id6761585013)

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mathstack Kids | $3.99 | one-time |
| Mathstack Unlimited | $3.99 | one-time |


## Frequently asked questions

### Is Solar System Planets free?

Solar System Planets is free to download, with in-app purchases available.

### Is MathStack free?

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

### Do Solar System Planets or MathStack have ads?

Neither Solar System Planets nor MathStack shows ads.

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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.*