# Quantum Mechanics vs BaseLearn by ChatStick

The clearest difference is in-app purchases: Quantum Mechanics at none against BaseLearn by ChatStick's 1. Quantum Mechanics also leads on ads (none vs shown) and iOS requirement (9.0 vs 26.0). On price and device support there is nothing between them.

Both are free to download. BaseLearn by ChatStick sells 1 one-off in-app purchase. Quantum Mechanics asks for nothing beyond the download.

## The numbers

| Metric | Quantum Mechanics | BaseLearn by ChatStick |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (179 ratings)](https://appshunter.io/ios/app/quantum-mechanics-theories/id1159692911/reviews)** | — |
| Number of ratings | **179** | — |
| Positive reviews | 43.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 50 MB | 10 MB |
| Requires iOS | **9.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vitalii Gryniuk](https://appshunter.io/developer/1007630419) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Quantum Mechanics

[App page](https://appshunter.io/ios/app/quantum-mechanics-theories/id1159692911)

Explore various theories on the model and structure of atoms. This app details concepts like atomic postulates, photon mechanisms, and models for hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, and oxygen. It also covers related physics principles such as gravity, electromagnetism, and time.

**Highlights:** Atomic structure theories, Models of various elements, Photon mechanism explanations, Gravity and electromagnetism concepts, Time and electricity principles, Mathematical algorithms

**Features:** macOS Compatibility

**In-app purchases:** none


### BaseLearn by ChatStick

[App page](https://appshunter.io/ios/app/baselearn-by-chatstick/id6764545234)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BaseLearn Premium Unlock | $1.99 | one-time |


## Frequently asked questions

### Is Quantum Mechanics free?

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

### Is BaseLearn by ChatStick free?

BaseLearn by ChatStick is free to download, with in-app purchases available.

### Do Quantum Mechanics or BaseLearn by ChatStick have ads?

BaseLearn by ChatStick shows ads; Quantum Mechanics does not.

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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.*