# Touch Trigonometry vs Stacked Studying

The clearest difference is in-app purchases: Stacked Studying at none against Touch Trigonometry's 1. Touch Trigonometry's advantage is iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Touch Trigonometry sells 1 one-off in-app purchase. Stacked Studying asks for nothing beyond the download.

## The numbers

| Metric | Touch Trigonometry | Stacked Studying |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stacked-studying/id6777459781/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Monetization | — | Free |
| Size | 48 MB | 18 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Aisatsu LLC](https://appshunter.io/developer/1874553323) | [Josh Britton](https://appshunter.io/developer/6777459783) |

## What reviewers say

### Touch Trigonometry

[App page](https://appshunter.io/ios/app/touch-trigonometry/id6758712159)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Touch Trigonometry | $4.99 | one-time |


### Stacked Studying

[App page](https://appshunter.io/ios/app/stacked-studying/id6777459781)

This app employs the Pomodoro technique to foster effective study habits and enhance knowledge retention. It integrates study timers and automatic break timers, allowing for customizable durations to suit individual needs. The app offers a free amino acid quiz and over 1500 practice MCAT questions.

**Highlights:** Pomodoro study timer, Automatic break timers, Customizable timer settings, Amino acid quiz, 1500+ MCAT practice questions

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Touch Trigonometry free?

Touch Trigonometry is free to download, with in-app purchases available.

### Is Stacked Studying free?

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

### Do Touch Trigonometry or Stacked Studying have ads?

Neither Touch Trigonometry nor Stacked Studying 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.*