# Train + vs Solution AI

The clearest difference is in-app purchases: Train + at none against Solution AI's 3. Train + also leads on iOS requirement (13.0 vs 15.1). Solution AI's advantage is update cadence (monthly vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Solution AI sells 3 in-app purchases, starting at $4.99 per 7 days. Train + asks for nothing beyond the download.

Train + ships an update every 4 months, Solution AI monthly. The most recent releases landed on September 20, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Train + | Solution AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Size | 1 MB | 35 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marton Varga](https://appshunter.io/developer/1462579601) | [Emir Simsek](https://appshunter.io/developer/1820897950) |

## What reviewers say

### Train +

[App page](https://appshunter.io/ios/app/train-plus-math-practice/id1556128831)

**Features:** macOS Compatibility

**In-app purchases:** none


### Solution AI

[App page](https://appshunter.io/ios/app/solution-ai-problem-solver/id6747352034)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Monthly | $14.99 | per month |
| Pro Yearly | $199.99 | per year |


## Frequently asked questions

### Is Train + free?

Train + is free to download, with no in-app purchases.

### Is Solution AI free?

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

### Do Train + or Solution AI have ads?

Neither Train + nor Solution AI shows ads.

### Which is updated more often, Train + or Solution AI?

Train + ships an update every 4 months, and Solution AI monthly. Most recently, Train + was updated on September 20, 2026 and Solution AI on September 25, 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.*