# Pre vs TT Pre

The clearest difference is in-app purchases: TT Pre at none against Pre's 1. TT Pre also leads on rating (3.6 vs 3.3) and ratings volume (9 vs 3). Pre's advantage is iOS requirement (8.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. Pre sells 1 one-off in-app purchase. TT Pre asks for nothing beyond the download.

TT Pre holds the better App Store score, 3.6 against 3.3. Both are backed by a comparable volume of ratings — 3 and 9 respectively.

## The numbers

| Metric | Pre | TT Pre |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (3 ratings)](https://appshunter.io/ios/app/pre-calculus-formulas/id1227198216/reviews) | **[3.6 (9 ratings)](https://appshunter.io/ios/app/tt-pre-calculus/id1516358298/reviews)** |
| Number of ratings | 3 | **9** |
| Positive reviews | — | 28.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 31 MB | 88 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [AppCrab](https://appshunter.io/developer/1227198215) | [Teaching Textbooks, Inc.](https://appshunter.io/developer/1516345361) |

## What reviewers say

### Pre

[App page](https://appshunter.io/ios/app/pre-calculus-formulas/id1227198216)

Master pre-calculus with this comprehensive app. Access a full list of formulas with clear explanations, a detailed textbook covering all topics, and 148 video lessons. Learn independently without needing textbooks or internet access.

**Highlights:** Full list of pre-calculus formulas, Clear comments on each formula, Formula search functionality, Complete pre-calculus textbook, Offline mode for textbook, 148 ordered video lessons

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pre-calculus Premium | $0.99 | one-time |


### TT Pre

[App page](https://appshunter.io/ios/app/tt-pre-calculus/id1516358298)

This educational app provides comprehensive pre-calculus lessons and practice problems. It features audiovisual lectures, automated grading, and step-by-step explanations to help students learn independently. Parental controls allow progress tracking, and the digitized textbook is searchable.

**Highlights:** 95 audiovisual lectures, Thousands of practice problems, Automated grading and instant feedback, Step-by-step audiovisual explanations, Parental progress tracking, Digitized textbook with search

**In-app purchases:** none


## Frequently asked questions

### Is Pre free?

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

### Is TT Pre free?

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

### Which has better reviews, Pre or TT Pre?

TT Pre is rated higher. Pre averages 3.3 out of 5 from 3 ratings, while TT Pre averages 3.6 from 9 ratings.

### Do Pre or TT Pre have ads?

Neither Pre nor TT Pre 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.*