# Tri vs Space Atlas

The clearest difference is ads: Space Atlas at none against Tri's shown. Space Atlas also leads on update cadence (weekly vs every 2 months). Tri's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price and in-app purchases there is nothing between them.

Both are free to download. Tri sells 1 one-off in-app purchase and Space Atlas sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Tri ships an update every 2 months, Space Atlas weekly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Tri | Space Atlas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (17 ratings)](https://appshunter.io/ios/app/tri-go-math-your-math-helper/id1525513476/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 27 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alejandro Apodaca](https://appshunter.io/developer/1524127326) | [MUSTAFA OZTURK](https://appshunter.io/developer/6798660476) |

## What reviewers say

### Tri

[App page](https://appshunter.io/ios/app/tri-go-math-your-math-helper/id1525513476)

This app simplifies math homework with a suite of tools including area, basic, and trigonometry calculators. It offers offline access and equation solvers for first and second-degree equations, with more features planned.

**Highlights:** Offline Access, Area Calculator, Basic Calculator, Trigonometry Calculator, Unit Converter, Equation Solvers

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quitar anuncios | $1.99 | one-time |


### Space Atlas

[App page](https://appshunter.io/ios/app/space-atlas-explore-and-learn/id6809160436)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Space Atlas Premium | $4.99 | one-time |


## Frequently asked questions

### Is Tri free?

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

### Is Space Atlas free?

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

### Do Tri or Space Atlas have ads?

Tri shows ads; Space Atlas does not.

### Which is updated more often, Tri or Space Atlas?

Tri ships an update every 2 months, and Space Atlas weekly. Most recently, Tri was updated on October 24, 2026 and Space Atlas on October 29, 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.*