# Chemistry Pro vs GADPS

The clearest difference is in-app purchases: GADPS at none against Chemistry Pro's 5. GADPS also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). Chemistry Pro's advantage is iOS requirement (12.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. Chemistry Pro sells 5 in-app purchases, starting at $4.99 per 7 days. GADPS asks for nothing beyond the download.

Chemistry Pro ships an update every 2 months, GADPS every 3 weeks. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Chemistry Pro | GADPS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (8 ratings)](https://appshunter.io/ios/app/chemistry-pro/id1588453081/reviews)** | — |
| Number of ratings | **8** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 39 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ali Umer](https://appshunter.io/developer/1584417594) | [Arwinder Singh](https://appshunter.io/developer/1723755619) |

## What reviewers say

### Chemistry Pro

[App page](https://appshunter.io/ios/app/chemistry-pro/id1588453081)

Learn chemistry from basic to advanced topics with offline access. This app offers hundreds of lessons in English, covering chemistry in everyday life. Unlock premium features and advanced lessons through in-app purchases or subscriptions.

**Highlights:** Hundreds of chemistry topics, Offline access, Learn from basics to advanced, Chemistry in life lessons, Review mode, In-app purchases for premium content

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chemistry | $4.99 | per 7 days |
| Chemistry | $6.99 | per month |
| Chemistry | $29.99 | per year |
| Chemistry | $2.99 | one-time |
| Chemistry | $49.99 | one-time |


### GADPS

[App page](https://appshunter.io/ios/app/gadps/id6743835800)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chemistry Pro free?

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

### Is GADPS free?

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

### Do Chemistry Pro or GADPS have ads?

Chemistry Pro shows ads; GADPS does not.

### Which is updated more often, Chemistry Pro or GADPS?

Chemistry Pro ships an update every 2 months, and GADPS every 3 weeks. Most recently, Chemistry Pro was updated on November 3, 2026 and GADPS 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.*