# PP+ Gas Laws vs PraxiLabs

The clearest difference is price: PraxiLabs at Free against PP+ Gas Laws's $1.99. PraxiLabs also leads on update cadence (monthly vs every 12 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

PraxiLabs is free to download; PP+ Gas Laws costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PP+ Gas Laws ships an update every 12 months, PraxiLabs monthly. The most recent releases landed on September 10, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | PP+ Gas Laws | PraxiLabs |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.2 (5 ratings)](https://appshunter.io/ios/app/praxilabs/id6444179075/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Monthly** |
| Monetization | — | Free |
| Size | 122 MB | 840 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Polyhedron Learning Media, Inc.](https://appshunter.io/developer/458882328) | [Praxilabs](https://appshunter.io/developer/1652841766) |

## What reviewers say

### PP+ Gas Laws

[App page](https://appshunter.io/ios/app/pp-plus-gas-laws/id599291894)

**Features:** macOS Compatibility

**In-app purchases:** none


### PraxiLabs

[App page](https://appshunter.io/ios/app/praxilabs/id6444179075)

This app offers a virtual laboratory for students to conduct science experiments safely and interactively. Explore over 186 experiments in Chemistry, Physics, and Biology on any device, receiving real-time feedback to enhance understanding.

**Highlights:** Virtual laboratory environment, Over 186 interactive experiments, Chemistry, Physics, and Biology modules, Real-time feedback on experiments, Safe and risk-free experimentation, Accessible on multiple devices

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

**In-app purchases:** none


## Frequently asked questions

### Is PP+ Gas Laws free?

PP+ Gas Laws costs $1.99, with no in-app purchases.

### Is PraxiLabs free?

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

### Do PP+ Gas Laws or PraxiLabs have ads?

Neither PP+ Gas Laws nor PraxiLabs shows ads.

### Which is updated more often, PP+ Gas Laws or PraxiLabs?

PP+ Gas Laws ships an update every 12 months, and PraxiLabs monthly. Most recently, PP+ Gas Laws was updated on September 10, 2026 and PraxiLabs on November 3, 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.*