# Math Ref vs Ukulele by Ear

The clearest difference is price: Math Ref at $1.99 against Ukulele by Ear's $12.99. Math Ref also leads on update cadence (monthly vs every 3 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Math Ref costs $1.99 and Ukulele by Ear $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Math Ref ships an update monthly, Ukulele by Ear every 3 months. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Math Ref | Ukulele by Ear |
| --- | --- | --- |
| Price | **$1.99** | $12.99 |
| 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** | Every 3 months |
| Monetization | Paid | — |
| Size | 65 MB | 190 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Happy Maau Studios, LLC](https://appshunter.io/developer/301384060) | [Oleg Sokolov](https://appshunter.io/developer/1628122395) |

## 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)


### Ukulele by Ear

[App page](https://appshunter.io/ios/app/ukulele-by-ear/id1635675223)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Math Ref free?

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

### Is Ukulele by Ear free?

Ukulele by Ear costs $12.99, with no in-app purchases.

### Do Math Ref or Ukulele by Ear have ads?

Neither Math Ref nor Ukulele by Ear shows ads.

### Which is updated more often, Math Ref or Ukulele by Ear?

Math Ref ships an update monthly, and Ukulele by Ear every 3 months. Most recently, Math Ref was updated on October 10, 2026 and Ukulele by Ear on October 7, 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.*