# Formulus Free vs AP Calculus AB Exam Study Prep

The clearest difference is rating: Formulus Free at 5.0 against AP Calculus AB Exam Study Prep's 3.3. Formulus Free also leads on review sentiment (81% vs 50%) and update cadence (every 6 weeks vs every 5 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Formulus Free holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews point the same way: 81% of Formulus Free's written reviews are positive against 50% of AP Calculus AB Exam Study Prep's.

Formulus Free ships an update every 6 weeks, AP Calculus AB Exam Study Prep every 5 months. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Formulus Free | AP Calculus AB Exam Study Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/formulus-free/id309681718/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/ap-calculus-ab-exam-study-prep/id1645116125/reviews) |
| Number of ratings | **5** | 3 |
| Positive reviews | **81.1% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 12 MB | 8 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Daniel Byon](https://appshunter.io/developer/309681721) | [Golden Mind Services LTD](https://appshunter.io/developer/417614614) |

## What reviewers say

### Formulus Free

[App page](https://appshunter.io/ios/app/formulus-free/id309681718)

Access a comprehensive collection of essential math formulas for high school and college calculus students. Quickly find the formulas you need without flipping through textbooks or searching online.

**Highlights:** Calculus formula collection, Algebra and Geometry formulas, Derivatives, Integrals, Limits, Trigonometry, Vectors

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

**In-app purchases:** none

**What reviewers like**

- 👍 Excellent organization and easy navigation
- 🚀 Quick and convenient formula lookup
- 📚 Comprehensive coverage of calculus and math formulas
- 💰 Free app with extensive content
- 🎓 Great study and review tool for students

**What reviewers complain about**

- 🐛 Frequent crashes and freezing issues
- 📱 Poor compatibility with larger iPhone screens
- ❌ Some formulas contain errors or typos
- 🔍 Missing several important formulas and topics
- 📊 No interactive features or worked examples

**Reported bugs**

- App crashes on startup after updates
- Freezing and lag issues during use
- Compatibility issues with larger iPhone screens
- Incorrect cross product entry formula
- Error in Simpson's rule integral approximation

**Requested features**

- Add practice problems and worked examples
- Include inverse trigonometric functions
- Add 3D shapes and geometry formulas
- Implement search functionality for quick formula finding
- Add graphing and calculation capabilities


### AP Calculus AB Exam Study Prep

[App page](https://appshunter.io/ios/app/ap-calculus-ab-exam-study-prep/id1645116125)

Prepare for the AP Calculus AB exam with this comprehensive practice guide. It offers over 500 questions, offline access, and progress tracking features to help you study effectively. Review answers and focus on areas needing improvement.

**Highlights:** Over 500 practice questions, Offline access, Answer review, Progress tracking, Targeted practice on incorrect answers, Customizable quizzes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Formulus Free free?

Formulus Free is free to download, with no in-app purchases.

### Is AP Calculus AB Exam Study Prep free?

AP Calculus AB Exam Study Prep is free to download, with no in-app purchases.

### Which has better reviews, Formulus Free or AP Calculus AB Exam Study Prep?

Formulus Free is rated higher. Formulus Free averages 5.0 out of 5 from 5 ratings, while AP Calculus AB Exam Study Prep averages 3.3 from 3 ratings.

### Do Formulus Free or AP Calculus AB Exam Study Prep have ads?

Both Formulus Free and AP Calculus AB Exam Study Prep show ads.

### Which is updated more often, Formulus Free or AP Calculus AB Exam Study Prep?

Formulus Free ships an update every 6 weeks, and AP Calculus AB Exam Study Prep every 5 months. Most recently, Formulus Free was updated on October 16, 2026 and AP Calculus AB Exam Study Prep on October 6, 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.*