# Trigonometry Formulas vs I Aced Calculus AP Prep

The clearest difference is price: I Aced Calculus AP Prep at Free against Trigonometry Formulas's $0.99. I Aced Calculus AP Prep also leads on update cadence (every 2 weeks vs every 10 months) and ratings volume (30 vs 2). Trigonometry Formulas's advantage is in-app purchases (none vs 3) and rating (5.0 vs 4.6). On ads and device support there is nothing between them.

I Aced Calculus AP Prep is free to download; Trigonometry Formulas costs $0.99 up front. I Aced Calculus AP Prep sells 3 in-app purchases, starting at $7.99 per month. Trigonometry Formulas asks for nothing beyond the download.

Trigonometry Formulas holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: I Aced Calculus AP Prep has 30 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Trigonometry Formulas's written reviews are positive against 88% of I Aced Calculus AP Prep's.

Trigonometry Formulas ships an update every 10 months, I Aced Calculus AP Prep every 2 weeks. The most recent releases landed on October 2, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Trigonometry Formulas | I Aced Calculus AP Prep |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/trigonometry-formulas/id1477059658/reviews)** | [4.6 (30 ratings)](https://appshunter.io/ios/app/i-aced-calculus-ap-prep/id1666694535/reviews) |
| Number of ratings | 2 | **30** |
| Positive reviews | **100.0% of reviews** | 87.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 27 MB | 64 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ranjeet Kumar](https://appshunter.io/developer/1476822683) | [I Aced Calculus, LLC](https://appshunter.io/developer/1666694957) |

## What reviewers say

### Trigonometry Formulas

[App page](https://appshunter.io/ios/app/trigonometry-formulas/id1477059658)

Access a comprehensive collection of trigonometry formulas, including ratios, functions, standard angle values, and identities. This app covers basic to advanced topics like inverse circular functions and properties of triangles, serving as a handy reference for students and enthusiasts.

**Highlights:** Trigonometric Ratios and Functions, Basic Trigonometric Formulas, Standard Angle Values, Quadrant Rules of Signs, Addition and Subtraction Formulas, Inverse Circular Functions, Properties of Triangles

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

**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 Trigonometry Formulas free?

Trigonometry Formulas costs $0.99, 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, Trigonometry Formulas or I Aced Calculus AP Prep?

Trigonometry Formulas is rated higher. Trigonometry Formulas averages 5.0 out of 5 from 2 ratings, while I Aced Calculus AP Prep averages 4.6 from 30 ratings.

### Do Trigonometry Formulas or I Aced Calculus AP Prep have ads?

Neither Trigonometry Formulas nor I Aced Calculus AP Prep shows ads.

### Which is updated more often, Trigonometry Formulas or I Aced Calculus AP Prep?

Trigonometry Formulas ships an update every 10 months, and I Aced Calculus AP Prep every 2 weeks. Most recently, Trigonometry Formulas was updated on October 2, 2026 and I Aced Calculus AP Prep on October 9, 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.*