# Math Formulas vs Rare English Words Trainer

The clearest difference is chart position: Math Formulas at #192 against Rare English Words Trainer's unranked. Math Formulas also leads on price ($0.99 vs $2.99). Rare English Words Trainer's advantage is iOS requirement (13.0 vs 17.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

Math Formulas costs $0.99 and Rare English Words Trainer $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 26, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Math Formulas | Rare English Words Trainer |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | **[4.1 (11 ratings)](https://appshunter.io/ios/app/math-formulas-ref-guide/id423545644/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 69.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | — |
| Best chart rank | **#192** | — |
| Size | 18 MB | 29 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Oddrobo Software AB](https://appshunter.io/developer/423545647) | [Philipp Straub](https://appshunter.io/developer/1573167056) |

## What reviewers say

### Math Formulas

[App page](https://appshunter.io/ios/app/math-formulas-ref-guide/id423545644)

**Currently charting:** #192 Top Paid · Education (US App Store)

Access over 100 high school level math formulas covering algebra, geometry, calculus, trigonometry, probability, and statistics. Includes examples for clarity and a search function to quickly find needed information. Ideal for students, teachers, and math enthusiasts.

**Highlights:** 100+ math formulas, Algebra, geometry, calculus, trig, Probability and statistics, Formulas with examples, Powerful search function, Favorite formulas

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

**In-app purchases:** none


### Rare English Words Trainer

[App page](https://appshunter.io/ios/app/rare-english-words-trainer/id6470744874)

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

**In-app purchases:** none


## Frequently asked questions

### Is Math Formulas free?

Math Formulas costs $0.99, with no in-app purchases.

### Is Rare English Words Trainer free?

Rare English Words Trainer costs $2.99, with no in-app purchases.

### Do Math Formulas or Rare English Words Trainer have ads?

Neither Math Formulas nor Rare English Words Trainer shows ads.

### Which is updated more often, Math Formulas or Rare English Words Trainer?

Math Formulas ships an update monthly, and Rare English Words Trainer monthly. Most recently, Math Formulas was updated on October 26, 2026 and Rare English Words Trainer 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.*