# NIR vs Chemistry Solver

The clearest difference is in-app purchases: NIR at none against Chemistry Solver's 3. NIR also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Chemistry Solver sells 3 in-app purchases, starting at $4.99 per 7 days. NIR asks for nothing beyond the download.

NIR ships an update every 2 weeks, Chemistry Solver every 3 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | NIR | Chemistry Solver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Size | 82 MB | 55 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Mohamed Sultan](https://appshunter.io/developer/1711924608) | [Serhii Shlykov](https://appshunter.io/developer/1809794912) |

## What reviewers say

### NIR

[App page](https://appshunter.io/ios/app/nir/id6736466607)

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

**In-app purchases:** none


### Chemistry Solver

[App page](https://appshunter.io/ios/app/chemistry-solver-homework-ai-plus/id6759658452)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chemistry Weekly | $4.99 | per 7 days |
| Chemistry Solver AI Yearly | $19.99 | per year |
| Chemistry Solver Yearly Premium | $29.99 | per year |


## Frequently asked questions

### Is NIR free?

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

### Is Chemistry Solver free?

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

### Do NIR or Chemistry Solver have ads?

Chemistry Solver shows ads; NIR does not.

### Which is updated more often, NIR or Chemistry Solver?

NIR ships an update every 2 weeks, and Chemistry Solver every 3 months. Most recently, NIR was updated on October 30, 2026 and Chemistry Solver on October 28, 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.*