# TT Pre vs Calculus Solver

The clearest difference is rating: Calculus Solver at 4.2 against TT Pre's 3.3. TT Pre's advantage is in-app purchases (none vs 4) and update cadence (every 2 months vs every 21 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Calculus Solver sells 4 in-app purchases, starting at $4.99 per 7 days. TT Pre asks for nothing beyond the download.

Calculus Solver holds the better App Store score, 4.2 against 3.3. Both are backed by a comparable volume of ratings — 12 and 32 respectively. Written reviews complicate that: 29% of TT Pre's written reviews are positive against 0% of Calculus Solver's, so the app with the better star average is not the one people write more warmly about.

TT Pre ships an update every 2 months, Calculus Solver every 21 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | TT Pre | Calculus Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (12 ratings)](https://appshunter.io/ios/app/tt-pre-calculus/id1516358298/reviews) | **[4.2 (32 ratings)](https://appshunter.io/ios/app/calculus-solver-calculus-ai/id6737236212/reviews)** |
| Number of ratings | 12 | **32** |
| Positive reviews | **28.6% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 21 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 88 MB | 49 MB |
| Requires iOS | **12.0** | 14.0.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Teaching Textbooks, Inc.](https://appshunter.io/developer/1516345361) | [East Frisia LLC](https://appshunter.io/developer/547826578) |

## 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


### Calculus Solver

[App page](https://appshunter.io/ios/app/calculus-solver-calculus-ai/id6737236212)

Instantly solve calculus problems with AI. Get detailed, step-by-step solutions for derivatives, integrals, limits, and more. Perfect for students needing homework help or exam preparation.

**Highlights:** AI-powered calculus problem solving, Photo and manual input methods, Detailed step-by-step explanations, Instant and accurate results, Covers derivatives, integrals, limits, and more, Ideal for students and self-study

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Weekly | $4.99 | per 7 days |
| Premium - Monthly | $12.99 | per month |
| Premium - Yearly Discount | $14.99 | per year |
| Premium - Yearly | $29.99 | per year |


## Frequently asked questions

### Is TT Pre free?

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

### Is Calculus Solver free?

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

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

Calculus Solver is rated higher. TT Pre averages 3.3 out of 5 from 12 ratings, while Calculus Solver averages 4.2 from 32 ratings.

### Do TT Pre or Calculus Solver have ads?

Neither TT Pre nor Calculus Solver shows ads.

### Which is updated more often, TT Pre or Calculus Solver?

TT Pre ships an update every 2 months, and Calculus Solver every 21 months. Most recently, TT Pre was updated on October 24, 2026 and Calculus Solver on October 24, 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.*