# 安安记单词 vs Formula Motion

The clearest difference is price: 安安记单词 at Free against Formula Motion's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

安安记单词 is free to download; Formula Motion costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 安安记单词 | Formula Motion |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | — | Paid |
| Size | 36 MB | 40 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [荣举 胡](https://appshunter.io/developer/1891881138) | [锐 冯](https://appshunter.io/developer/1896254031) |

## What reviewers say

### 安安记单词

[App page](https://appshunter.io/ios/app/id6762184649)

**In-app purchases:** none


### Formula Motion

[App page](https://appshunter.io/ios/app/formula-motion/id6769649267)

This app transforms abstract mathematical concepts into engaging visual animations. It helps users understand formulas, theorems, and patterns through step-by-step explanations and diagrams. Ideal for both quick learning on the go and deeper exploration on larger screens.

**Highlights:** Animated math formulas, Geometry theorem visualizations, Number pattern animations, Step-by-step explanations, Diagram-based reasoning, Key takeaways for math concepts

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

**In-app purchases:** none


## Frequently asked questions

### Is 安安记单词 free?

安安记单词 is free to download, with no in-app purchases.

### Is Formula Motion free?

Formula Motion costs $0.99, with no in-app purchases.

### Do 安安记单词 or Formula Motion have ads?

Neither 安安记单词 nor Formula Motion shows ads.

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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.*