# BUAP Letmino vs StudyOS

The clearest difference is in-app purchases: BUAP Letmino at none against StudyOS's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. StudyOS sells 4 in-app purchases, starting at $4.99 per 7 days. BUAP Letmino asks for nothing beyond the download.

BUAP Letmino ships an update fortnightly, StudyOS every 9 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | BUAP Letmino | StudyOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (91 ratings)](https://appshunter.io/ios/app/studyos-study-with-ai/id6747879382/reviews)** |
| Number of ratings | — | **91** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 71 MB | 118 MB |
| Requires iOS | **16.0** | 17.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Odilo](https://appshunter.io/developer/976580041) | [DANIEL PONCELAS VARGAS](https://appshunter.io/developer/1823171837) |

## What reviewers say

### BUAP Letmino

[App page](https://appshunter.io/ios/app/buap-letmino/id1623132188)

**In-app purchases:** none


### StudyOS

[App page](https://appshunter.io/ios/app/studyos-study-with-ai/id6747879382)

Transform your study materials into interactive flashcards, summaries, and quizzes with AI. This app efficiently prepares you for exams and helps you master concepts on the go, making learning faster and more engaging.

**Highlights:** AI-generated flashcards, Automated summaries, Personalized quizzes, Material upload (notes, PDFs, images), Spaced repetition techniques, Progress tracking

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $4.99 | per 7 days |
| Premium Access | $12.99 | per month |
| Premium Access | $12.99 | per month |
| Premium Access | $69.99 | per year |


## Frequently asked questions

### Is BUAP Letmino free?

BUAP Letmino is free to download, with no in-app purchases.

### Is StudyOS free?

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

### Do BUAP Letmino or StudyOS have ads?

Neither BUAP Letmino nor StudyOS shows ads.

### Which is updated more often, BUAP Letmino or StudyOS?

BUAP Letmino ships an update fortnightly, and StudyOS every 9 days. Most recently, BUAP Letmino was updated on November 7, 2026 and StudyOS on November 5, 2026.

---

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