# Speed Trigonometry vs Electrolyte Equilibria

The clearest difference is update cadence: Electrolyte Equilibria at every 3 months against Speed Trigonometry's every 14 months. Electrolyte Equilibria also leads on device support (4 vs 2) and iOS requirement (15.0 vs 18.5). On price, 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.

Speed Trigonometry ships an update every 14 months, Electrolyte Equilibria every 3 months. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Speed Trigonometry | Electrolyte Equilibria |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/speed-trigonometry/id6747187585/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 2 MB | 108 MB |
| Requires iOS | 18.5 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Nick Petroni](https://appshunter.io/developer/1597208168) | [Oleksandr Rubtsov](https://appshunter.io/developer/1823549572) |

## What reviewers say

### Speed Trigonometry

[App page](https://appshunter.io/ios/app/speed-trigonometry/id6747187585)

This app helps students quickly memorize the unit circle. It quizzes users on sine, cosine, tangent, and inverse trigonometric values for key angles. Developed by students for students, it's ideal for precalculus learners.

**Highlights:** Unit circle memorization, Quizzes on trig values, Focus on key angles, Sine, cosine, tangent, inverse values, Student-developed

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

**In-app purchases:** none


### Electrolyte Equilibria

[App page](https://appshunter.io/ios/app/electrolyte-equilibria/id6754345279)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Speed Trigonometry free?

Speed Trigonometry is free to download, with no in-app purchases.

### Is Electrolyte Equilibria free?

Electrolyte Equilibria is free to download, with no in-app purchases.

### Do Speed Trigonometry or Electrolyte Equilibria have ads?

Neither Speed Trigonometry nor Electrolyte Equilibria shows ads.

### Which is updated more often, Speed Trigonometry or Electrolyte Equilibria?

Speed Trigonometry ships an update every 14 months, and Electrolyte Equilibria every 3 months. Most recently, Speed Trigonometry was updated on October 7, 2026 and Electrolyte Equilibria on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*