# TT Pre vs Thinking Tutor

The clearest difference is in-app purchases: TT Pre at none against Thinking Tutor's 2. TT Pre also leads on device support (4 vs 2) and iOS requirement (12.0 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Thinking Tutor sells 2 in-app purchases, starting at $9.99 per month. TT Pre asks for nothing beyond the download.

TT Pre ships an update every 2 months, Thinking Tutor every 6 weeks. The most recent releases landed on September 11, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | TT Pre | Thinking Tutor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (9 ratings)](https://appshunter.io/ios/app/tt-pre-calculus/id1516358298/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 88 MB | 7 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Teaching Textbooks, Inc.](https://appshunter.io/developer/1516345361) | [Glenn Kohner](https://appshunter.io/developer/1744850671) |

## What reviewers say

### 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


### Thinking Tutor

[App page](https://appshunter.io/ios/app/thinking-tutor/id6502268270)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $9.99 | per month |
| Yearly Subscription | $96.00 | per year |


## Frequently asked questions

### Is TT Pre free?

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

### Is Thinking Tutor free?

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

### Do TT Pre or Thinking Tutor have ads?

Neither TT Pre nor Thinking Tutor shows ads.

### Which is updated more often, TT Pre or Thinking Tutor?

TT Pre ships an update every 2 months, and Thinking Tutor every 6 weeks. Most recently, TT Pre was updated on September 11, 2026 and Thinking Tutor on June 5, 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.*