# Croc 24 vs Rumina

The clearest difference is monetization model: Croc 24 at free against Rumina's freemium. Rumina's advantage is update cadence (every 5 days vs every 3 weeks) and ratings volume (6 vs 2). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Croc 24 sells 1 one-off in-app purchase and Rumina sells 5 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Croc 24 against 5.0 for Rumina. Both are backed by a comparable volume of ratings — 2 and 6 respectively.

Croc 24 ships an update every 3 weeks, Rumina every 5 days. The most recent releases landed on July 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Croc 24 | Rumina |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/croc-24-math-game/id6746104087/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/rumina-visual-ai-tutor/id6767884913/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | **Free** | Freemium |
| Size | 23 MB | 181 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Wei Wang](https://appshunter.io/developer/1467609434) | [Hangzhou Remis Information Technology Co., Ltd.](https://appshunter.io/developer/6802556146) |

## What reviewers say

### Croc 24

[App page](https://appshunter.io/ios/app/croc-24-math-game/id6746104087)

This app offers a fun way to practice and master the 24 game. It features a free calculator for finding solutions, a challenge mode for testing skills, and a history tracker to monitor progress. Enjoy a delightful and ad-free mathematical adventure.

**Highlights:** Free calculator for finding all solutions, Challenge mode with random puzzles, History tracker for progress monitoring, Powerful mathematical algorithm, Adorable and intuitive interface, Ad-free gaming experience

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Premium | $1.99 | one-time |


### Rumina

[App page](https://appshunter.io/ios/app/rumina-visual-ai-tutor/id6767884913)

Transform your curiosity into structured learning paths. This app helps you explore complex ideas and decisions by creating visual explanations with narration. It's designed for anyone seeking deeper understanding beyond simple answers.

**Highlights:** Start with everyday questions, Explore question maps, Create visual explanations, Listen to narrated content, Ask follow-up questions, Turn confusion into clarity

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lucue Pro Monthly | $19.99 | per month |
| Lucue Pro Yearly | $149.99 | per year |
| 500 Stars | $6.99 | one-time |
| 2,000 Stars | $24.99 | one-time |
| 5,000 Stars | $59.99 | one-time |


## Frequently asked questions

### Is Croc 24 free?

Croc 24 is free to download, with in-app purchases available.

### Is Rumina free?

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

### Which has better reviews, Croc 24 or Rumina?

Croc 24 and Rumina are both rated 5.0 out of 5 on the App Store, from 2 and 6 ratings respectively.

### Do Croc 24 or Rumina have ads?

Neither Croc 24 nor Rumina shows ads.

### Which is updated more often, Croc 24 or Rumina?

Croc 24 ships an update every 3 weeks, and Rumina every 5 days. Most recently, Croc 24 was updated on July 9, 2026 and Rumina on September 19, 2026.

---

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