# AInstein vs Sigma AI math solver

The clearest difference is in-app purchases: Sigma AI math solver at none against AInstein's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AInstein sells 3 in-app purchases, starting at $1.99 per 7 days. Sigma AI math solver asks for nothing beyond the download.

## The numbers

| Metric | AInstein | Sigma AI math solver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Size | 45 MB | 25 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Mikhaylov](https://appshunter.io/developer/1490604751) | [Uridiinbish Narankhuu](https://appshunter.io/developer/1872069897) |

## What reviewers say

### AInstein

[App page](https://appshunter.io/ios/app/ainstein-ai-homework-helper/id6747373290)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Unlimited Subscription | $1.99 | per 7 days |
| Monthly Unlimited Subscription | $3.99 | per month |
| Annual Unlimited Subscription | $24.99 | per year |


### Sigma AI math solver

[App page](https://appshunter.io/ios/app/sigma-ai-math-solver/id6759162133)

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

**In-app purchases:** none


## Frequently asked questions

### Is AInstein free?

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

### Is Sigma AI math solver free?

Sigma AI math solver is free to download, with no in-app purchases.

### Do AInstein or Sigma AI math solver have ads?

Neither AInstein nor Sigma AI math solver 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.*