# Hubble Learning vs Rebel Ninja

The clearest difference is update cadence: Hubble Learning at every 5 days against Rebel Ninja's every 6 weeks. Hubble Learning also leads on iOS requirement (11.0 vs 15.1). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Hubble Learning sells 2 in-app purchases, starting at $7.99 per month and Rebel Ninja sells 9 in-app purchases, starting at $24.00 per month. Whichever you choose, the download price is not the number that matters.

Rebel Ninja holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 10 and 28 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Hubble Learning ships an update every 5 days, Rebel Ninja every 6 weeks. The most recent releases landed on October 18, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Hubble Learning | Rebel Ninja |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (10 ratings)](https://appshunter.io/ios/app/hubble-learning/id1447315085/reviews) | **[5.0 (28 ratings)](https://appshunter.io/ios/app/rebel-ninja/id1600110424/reviews)** |
| Number of ratings | 10 | **28** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 106 MB | 91 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hubble Learning Inc](https://appshunter.io/developer/1447315083) | [Rebel Ninja LLC](https://appshunter.io/developer/1600110636) |

## What reviewers say

### Hubble Learning

[App page](https://appshunter.io/ios/app/hubble-learning/id1447315085)

Embark on a space adventure to develop crucial life skills. This app offers interactive activities and guided conversations for children aged 5-10 and their caregivers, fostering parent-child bonding and real-world social-emotional learning.

**Highlights:** Intergalactic space adventure theme, Focus on life skills (goal-setting, kindness, etc.), Parent-child co-pilot experience, Guided conversations and interactive activities, Reward system for progress, Research-backed by Harvard Graduate School of Education

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hubble Monthly Subscription | $7.99 | per month |
| Hubble Yearly Subscription | $34.99 | per year |


### Rebel Ninja

[App page](https://appshunter.io/ios/app/rebel-ninja/id1600110424)

This app helps children aged 4-12 build confidence and learn to prevent and handle bullying. Through fun, interactive lessons, kids can develop self-esteem and reach their full potential. It offers progress tracking and offline sync for a comprehensive learning experience.

**Highlights:** Bullying prevention education, Confidence building, Verbal and physical defense techniques, Progress tracking, Offline sync, Community for kids and parents

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rebelflix Silver | $24.00 | per month |
| Rebel Ninja Membership | $48.00 | per month |
| Rebelflix Gold | $49.00 | per month |
| The Art Of Tongue Fu | $18.99 | one-time |
| Confidence Xcelerator | $18.99 | one-time |
| 30 Day Challenge 60% Off | $97.00 | one-time |
| 30 Day Challenge | $249.00 | one-time |
| 60% OFF 6 Week Challenge | $399.00 | one-time |
| 6 Week Kaizen Confidence | $999.00 | one-time |


## Frequently asked questions

### Is Hubble Learning free?

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

### Is Rebel Ninja free?

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

### Which has better reviews, Hubble Learning or Rebel Ninja?

Rebel Ninja is rated higher. Hubble Learning averages 4.8 out of 5 from 10 ratings, while Rebel Ninja averages 5.0 from 28 ratings.

### Do Hubble Learning or Rebel Ninja have ads?

Both Hubble Learning and Rebel Ninja show ads.

### Which is updated more often, Hubble Learning or Rebel Ninja?

Hubble Learning ships an update every 5 days, and Rebel Ninja every 6 weeks. Most recently, Hubble Learning was updated on October 18, 2026 and Rebel Ninja on October 30, 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.*