# Zerebrez vs IBdata

The clearest difference is in-app purchases: IBdata at none against Zerebrez's 4. IBdata also leads on review sentiment (100% vs 75%) and iOS requirement (10.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Zerebrez sells 4 in-app purchases, starting at $4.99 per month. IBdata asks for nothing beyond the download.

Zerebrez ships an update every 5 days, IBdata every 8 days. The most recent releases landed on October 1, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Zerebrez | IBdata |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/zerebrez/id1390899545/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 8 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 32 MB | 12 MB |
| Requires iOS | 18.0 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Luis Gomez](https://appshunter.io/developer/958816622) | [Bernardo Serrano](https://appshunter.io/developer/1484112490) |

## What reviewers say

### Zerebrez

[App page](https://appshunter.io/ios/app/zerebrez/id1390899545)

Prepare for entrance exams with a fun and effective study app. Access hundreds of free questions, study by subject, review mistakes, and track your progress instantly. Get detailed explanations for every question and compare your results with other users.

**Highlights:** Hundreds of free questions, Study by subject, Review mistakes, Instant progress tracking, Detailed question explanations, Offline study mode, Exams created by teachers

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Curso Licenciatura UNAM | $4.99 | per month |
| Curso ECOEMS | $4.99 | per month |
| COMIPEMS access for one year | $9.99 | one-time |
| Licenciatura UNAM 1 año | $11.99 | one-time |


### IBdata

[App page](https://appshunter.io/ios/app/ibdata/id1484112491)

Access and explore the National Herbarium of Mexico's plant records. Download data for offline use, apply custom filters, and visualize lists and totals of plant families, species, and collection data.

**Highlights:** Access National Herbarium of Mexico records, Download plant data for offline use, Customizable search filters, Visualize lists of countries, states, and species, View totals by country, state, genus, and year, Browse by family, genus, and species

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zerebrez free?

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

### Is IBdata free?

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

### Do Zerebrez or IBdata have ads?

Neither Zerebrez nor IBdata shows ads.

### Which is updated more often, Zerebrez or IBdata?

Zerebrez ships an update every 5 days, and IBdata every 8 days. Most recently, Zerebrez was updated on October 1, 2026 and IBdata on September 14, 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.*