# RevisApp vs HiDuck

The clearest difference is in-app purchases: HiDuck at none against RevisApp's 16. HiDuck also leads on ads (none vs shown). RevisApp's advantage is iOS requirement (15.1 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. RevisApp sells 15 in-app purchases, starting at $1.99 per month. HiDuck asks for nothing beyond the download.

RevisApp ships an update every 6 days, HiDuck every 10 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | RevisApp | HiDuck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (17 ratings)](https://appshunter.io/ios/app/revisapp/id1447918829/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 56.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 10 days |
| Monetization | Freemium | — |
| Size | 97 MB | 24 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [REVISAPP DESENVOLVIMENTO DE APLICATIVOS LTDA](https://appshunter.io/developer/1447918828) | [Joao Mergulhao](https://appshunter.io/developer/1768313992) |

## What reviewers say

### RevisApp

[App page](https://appshunter.io/ios/app/revisapp/id1447918829)

This app provides offline access to core subjects for primary and secondary school students, covering over 600 topics in science, humanities, and math. It includes tools for revision tracking, note-taking, and achievement unlocking to enhance study effectiveness.

**Highlights:** Offline access to subjects, Extensive content library (600+ topics), Revision progress tracking, Note-taking functionality, Achievement system for motivation, Intuitive navigation with visuals

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RevisApp PRO - Assinatura | $1.99 | per month |
| Assinatura Mensal 20% OFF | $1.99 | per month |
| RevisApp PRO - Assinatura | $2.99 | per month |
| Assinatura Anual | $4.99 | per year |
| Assinatura Semestral | $5.99 | per 6 months |
| Assinatura Anual Season | $6.99 | per year |
| Assinatura Anual Promo | $9.99 | per year |
| Assinatura Anual | $9.99 | per year |
| Assinatura Anual | $11.99 | per year |
| Assinatura Anual | $19.99 | per year |
| RevisApp PRO Vitalício 50% OFF | $7.99 | one-time |
| RevisApp PRO Vitalício 30% OFF | $9.99 | one-time |
| RevisApp PRO Vitalício | $9.99 | one-time |
| Mais revisōes sem propagandas | $11.99 | one-time |
| RevisApp PRO Vitalício | $11.99 | one-time |


### HiDuck

[App page](https://appshunter.io/ios/app/hiduck-your-study-buddy/id6737779740)

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

**In-app purchases:** none


## Frequently asked questions

### Is RevisApp free?

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

### Is HiDuck free?

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

### Do RevisApp or HiDuck have ads?

RevisApp shows ads; HiDuck does not.

### Which is updated more often, RevisApp or HiDuck?

RevisApp ships an update every 6 days, and HiDuck every 10 days. Most recently, RevisApp was updated on October 26, 2026 and HiDuck on October 25, 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.*