# x vs AI Math Problem Solver

The clearest difference is in-app purchases: x at none against AI Math Problem Solver's 2. x also leads on update cadence (fortnightly vs every 5 months). AI Math Problem Solver's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. AI Math Problem Solver sells 2 in-app purchases, starting at $4.99 per 7 days. x asks for nothing beyond the download.

x ships an update fortnightly, AI Math Problem Solver every 5 months. The most recent releases landed on September 10, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | x | AI Math Problem Solver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 months |
| Size | 1 MB | 40 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FMILLET](https://appshunter.io/developer/550887984) | [Rehmat Khan](https://appshunter.io/developer/1765698169) |

## What reviewers say

### x

[App page](https://appshunter.io/ios/app/x-cal-plus/id6747112339)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI Math Problem Solver

[App page](https://appshunter.io/ios/app/ai-math-problem-solver/id6749448672)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Math Weekly Pro | $4.99 | per 7 days |
| AI Math Yearly Pro | $24.99 | per year |


## Frequently asked questions

### Is x free?

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

### Is AI Math Problem Solver free?

AI Math Problem Solver is free to download, with in-app purchases available.

### Do x or AI Math Problem Solver have ads?

Neither x nor AI Math Problem Solver shows ads.

### Which is updated more often, x or AI Math Problem Solver?

x ships an update fortnightly, and AI Math Problem Solver every 5 months. Most recently, x was updated on September 10, 2026 and AI Math Problem Solver on September 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.*