# STEMReader vs Formula Kit

The clearest difference is in-app purchases: Formula Kit at none against STEMReader's 4. Formula Kit also leads on iOS requirement (17.0 vs 26.4). On price, ads and device support there is nothing between them.

Both are free to download. STEMReader sells 4 in-app purchases, starting at $1.99 per month. Formula Kit asks for nothing beyond the download.

## The numbers

| Metric | STEMReader | Formula Kit |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 11 days |
| Monetization | — | Paid |
| Size | 12 MB | 61 MB |
| Requires iOS | 26.4 | **17.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [SAMUEL QUINTEIRO PEREZ](https://appshunter.io/developer/1793573517) | [玉良 刘](https://appshunter.io/developer/6777819983) |

## What reviewers say

### STEMReader

[App page](https://appshunter.io/ios/app/stemreader/id6778995923)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $1.99 | per month |
| Plus Annual | $7.99 | per year |
| This Document | $0.99 | one-time |
| Three Documents | $1.99 | one-time |


### Formula Kit

[App page](https://appshunter.io/ios/app/formula-kit/id6783818766)

Easily create, edit, and export mathematical and scientific formulas with a dedicated LaTeX editor. Features real-time rendering, a custom keyboard, and extensive template library for offline use.

**Highlights:** Real-time LaTeX rendering, Over 400 formula templates, Custom auxiliary keyboard, Image and code export, Formula library and management, Offline functionality, History and preview

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is STEMReader free?

STEMReader is free to download, with in-app purchases available.

### Is Formula Kit free?

Formula Kit is free to download, with no in-app purchases.

### Do STEMReader or Formula Kit have ads?

Neither STEMReader nor Formula Kit shows ads.

---

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