# TT Pre vs I Aced Calculus AP Prep

The clearest difference is review sentiment: I Aced Calculus AP Prep at 88% against TT Pre's 29%. I Aced Calculus AP Prep also leads on rating (4.6 vs 3.3) and update cadence (every 2 weeks vs every 2 months). TT Pre's advantage is in-app purchases (none vs 3) and iOS requirement (12.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. I Aced Calculus AP Prep sells 3 in-app purchases, starting at $7.99 per month. TT Pre asks for nothing beyond the download.

I Aced Calculus AP Prep holds the better App Store score, 4.6 against 3.3. Both are backed by a comparable volume of ratings — 12 and 30 respectively. Written reviews point the same way: 29% of TT Pre's written reviews are positive against 88% of I Aced Calculus AP Prep's.

TT Pre ships an update every 2 months, I Aced Calculus AP Prep every 2 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | TT Pre | I Aced Calculus AP Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (12 ratings)](https://appshunter.io/ios/app/tt-pre-calculus/id1516358298/reviews) | **[4.6 (30 ratings)](https://appshunter.io/ios/app/i-aced-calculus-ap-prep/id1666694535/reviews)** |
| Number of ratings | 12 | **30** |
| Positive reviews | 28.6% of reviews | **87.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 88 MB | 64 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Teaching Textbooks, Inc.](https://appshunter.io/developer/1516345361) | [I Aced Calculus, LLC](https://appshunter.io/developer/1666694957) |

## 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


### I Aced Calculus AP Prep

[App page](https://appshunter.io/ios/app/i-aced-calculus-ap-prep/id1666694535)

Master single-variable calculus with this comprehensive study companion. It offers flashcards, practice questions, video explanations, and AI assistance to prepare for AP exams or college courses. Study modes and difficulty levels cater to all learners.

**Highlights:** 400+ Smart Flashcards, 1200+ Practice Questions, Video Explanations, AI Assistance, Spaced Repetition Study Mode, Calculator Tips

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Monthly | $7.99 | per month |
| Premium - 3 Months | $19.99 | per 3 months |
| Premium - Annual | $35.99 | per year |


## Frequently asked questions

### Is TT Pre free?

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

### Is I Aced Calculus AP Prep free?

I Aced Calculus AP Prep is free to download, with in-app purchases available.

### Which has better reviews, TT Pre or I Aced Calculus AP Prep?

I Aced Calculus AP Prep is rated higher. TT Pre averages 3.3 out of 5 from 12 ratings, while I Aced Calculus AP Prep averages 4.6 from 30 ratings.

### Do TT Pre or I Aced Calculus AP Prep have ads?

Neither TT Pre nor I Aced Calculus AP Prep shows ads.

### Which is updated more often, TT Pre or I Aced Calculus AP Prep?

TT Pre ships an update every 2 months, and I Aced Calculus AP Prep every 2 weeks. Most recently, TT Pre was updated on November 3, 2026 and I Aced Calculus AP Prep on November 3, 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.*