# Math Ref vs Trigonometry and functions

The clearest difference is price: Math Ref at $1.99 against Trigonometry and functions's $3.99. Math Ref also leads on iOS requirement (11.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Math Ref costs $1.99 and Trigonometry and functions $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Math Ref | Trigonometry and functions |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Rating | **[4.3 (26 ratings)](https://appshunter.io/ios/app/math-ref/id301384057/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 81.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Paid | — |
| Size | 65 MB | 1 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Happy Maau Studios, LLC](https://appshunter.io/developer/301384060) | [Gomathy Shankaran](https://appshunter.io/developer/503956143) |

## What reviewers say

### Math Ref

[App page](https://appshunter.io/ios/app/math-ref/id301384057)

Access a vast library of over 1,400 math, physics, and chemistry formulas, figures, and examples. Includes helpful tools like a unit converter and solvers for common calculations. Ideal for students, teachers, and professionals needing quick access to mathematical resources.

**Highlights:** 1,400+ formulas, figures, and examples, Unit converter, Quadratic solver, Triangle solver, Save equations in groups, Searchable prime numbers

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Comprehensive math reference
- 👍 Useful for students and professionals
- 🚀 Extensive coverage of topics
- 👍 Helpful for quick formula lookup
- 👍 Great value for the price

**What reviewers complain about**

- 🐛 Some errors and typos in content
- 👎 Lacking in detailed explanations and examples
- 👎 Suboptimal organization and navigation
- 👎 Limited functionality (no calculators, solvers, etc.)

**Reported bugs**

- Periodic table display issues on iPad
- Freezing and crashing on certain devices

**Requested features**

- Add user-defined formulas and notes
- Improve organization with better categorization
- Implement search and filtering capabilities
- Incorporate more examples and step-by-step solutions
- Add advanced math features (e.g., Laplace transforms, complex analysis)


### Trigonometry and functions

[App page](https://appshunter.io/ios/app/trigonometry-and-functions/id6739970869)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Math Ref free?

Math Ref costs $1.99, with no in-app purchases.

### Is Trigonometry and functions free?

Trigonometry and functions costs $3.99, with no in-app purchases.

### Do Math Ref or Trigonometry and functions have ads?

Neither Math Ref nor Trigonometry and functions shows ads.

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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.*