# Gas vs SideBrain

The clearest difference is iOS requirement: Gas at 13.4 against SideBrain's 16.7.10. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Gas sells 1 one-off in-app purchase and SideBrain sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Gas | SideBrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sidebrain-ai-homework-helper/id6557068429/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 14 MB |
| Requires iOS | **13.4** | 16.7.10 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Iurii Dubrov](https://appshunter.io/developer/1632057221) | [Appside](https://appshunter.io/developer/1511759873) |

## What reviewers say

### Gas

[App page](https://appshunter.io/ios/app/gas-main/id1522466692)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get full App version | $7.99 | one-time |


### SideBrain

[App page](https://appshunter.io/ios/app/sidebrain-ai-homework-helper/id6557068429)

This AI-powered tool provides instant homework assistance and math tutoring. Scan problems, receive step-by-step solutions, and engage with interactive lessons across various subjects. It's designed to make learning more efficient and enjoyable for students.

**Highlights:** AI Homework Assistant, Scan and Solve problems, Step-by-step math solutions, Interactive learning lessons, Comprehensive study tool, 24/7 availability

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro Access | $4.99 | per 7 days |
| Annual Pro | $24.99 | per year |


## Frequently asked questions

### Is Gas free?

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

### Is SideBrain free?

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

### Do Gas or SideBrain have ads?

Neither Gas nor SideBrain shows ads.

### Which is updated more often, Gas or SideBrain?

Gas ships an update every 6 months, and SideBrain every 6 months. Most recently, Gas was updated on November 7, 2026 and SideBrain on October 30, 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.*