# Chemical Elements Practice vs Fluid Mechanics Practice

The clearest difference is price: Chemical Elements Practice at Free against Fluid Mechanics Practice's $0.49. Fluid Mechanics Practice's advantage is in-app purchases (none vs 1) and update cadence (every 6 days vs monthly). On ads, device support and iOS requirement there is nothing between them.

Chemical Elements Practice is free to download; Fluid Mechanics Practice costs $0.49 up front. Chemical Elements Practice sells 1 one-off in-app purchase. Fluid Mechanics Practice asks for nothing beyond the download.

Chemical Elements Practice ships an update monthly, Fluid Mechanics Practice every 6 days. The most recent releases landed on October 7, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Chemical Elements Practice | Fluid Mechanics Practice |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| Rating | **[4.8 (38 ratings)](https://appshunter.io/ios/app/chemical-elements-practice/id1581952820/reviews)** | — |
| Number of ratings | **38** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | Free | — |
| Size | 30 MB | 24 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Philipp Straub](https://appshunter.io/developer/1573167056) | [Manish Kumar](https://appshunter.io/developer/1854995154) |

## What reviewers say

### Chemical Elements Practice

[App page](https://appshunter.io/ios/app/chemical-elements-practice/id1581952820)

Master the periodic table with an adaptive learning system. This app uses spaced repetition and two distinct study modes to build long-term memory of element symbols, names, and relationships. Track your progress with category tests and access a full element browser.

**Highlights:** Adaptive spaced repetition, Multiple Choice mode, Self-Assessment mode, All 118 elements included, Category tests, Full card browser, Customizable study settings

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $3.99 | one-time |


### Fluid Mechanics Practice

[App page](https://appshunter.io/ios/app/fluid-mechanics-practice/id6757950639)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chemical Elements Practice free?

Chemical Elements Practice is free to download, with in-app purchases available.

### Is Fluid Mechanics Practice free?

Fluid Mechanics Practice costs $0.49, with no in-app purchases.

### Do Chemical Elements Practice or Fluid Mechanics Practice have ads?

Neither Chemical Elements Practice nor Fluid Mechanics Practice shows ads.

### Which is updated more often, Chemical Elements Practice or Fluid Mechanics Practice?

Chemical Elements Practice ships an update monthly, and Fluid Mechanics Practice every 6 days. Most recently, Chemical Elements Practice was updated on October 7, 2026 and Fluid Mechanics Practice on October 20, 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.*