Comparison

Hubble Learning vs Rebel Ninja

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Hubble Learning

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
Read full description

Embark on an Intergalactic Learning Adventure with Hubble Learning! In a world where social-emotional skills are more crucial than ever, we present Hubble Learning—a pioneering educational app backed by research and nurtured through a fellowship at the prestigious Harvard Graduate School of Education. Why Hubble Learning Stands Out: - Age-Appropriate Excellence: Tailored for children aged 5 to 10, Hubble Learning ensures an engaging and age-appropriate learning experience. - Thrilling Space Adventure: Dive into a captivating space odyssey where caregivers/parents and children become copilots, unlocking the secrets of life skills in a fun, interactive way. - Real-world Applications: Beyond the pixels, Hubble Learning focuses on crucial life skills—goal-setting, active listening, collaboration, self-advocacy, kindness, and more. - Parent-Child Bonding: Hubble Learning transforms learning into a shared adventure! Parents and children engage in guided conversations, exciting activities, and earn rewards that pave the way for meaningful connections. - Rewards for Real Progress: Exchange earned rewards for fantastic items like new spacesuits, enhancing your intergalactic journey and creating lasting memories. What Sets Us Apart: Research-Backed: Developed with insights from the Harvard Graduate School of Education, Hubble Learning ensures a robust educational foundation. Playful and Purposeful: Blending play and education seamlessly, Hubble Learning makes learning a joyous, shared experience. Ready to Launch into Learning? Try Hubble Learning Today! Terms and Conditions: https://app.termly.io/document/privacy-policy/be6e6d9f-2492-4e64-b246-2cc00a759449

About

Rebel Ninja

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
Read full description

Discover how you can prevent bullying for your child while building their confidence. Kids who are victims of bullying have lower self esteem and confidence. Children who learn how to prevent and handle bullying can finally be their true self and reach their full potential. As a Rebel Ninja, your child will have fun learning how to become confident while being armed with the knowledge of verbal and physical bullying defence. We are a community of amazing kids and parents. This app is perfect for kids ages 4 to 12 years old. INFORMATION ABOUT THE APP AND PURCHASE OPTIONS By signing up, you will get access to subscription(s) that include features such as progress tracking, and offline sync. The download of Rebel Ninja is free of charge. Should you use Rebel Ninja to access in-app content via available subscription(s), a payment will be charged to your credit card after the trial period ends and when a subscription renews. A subscription renews automatically unless canceled at least 24 hours prior to the end of the subscription period. There is no increase in price when renewing. Subscription(s) can be managed and auto-renewal turned off in Account Settings in the App Store after purchase. Read our full Terms of Service and our Privacy Policy: https://passion.io/terms-of-service https://passion.io/privacy-policy

Screenshots

Hubble Learning4 screens
Rebel Ninja4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Hubble Learning versus Rebel Ninja: the parameters behind the verdict, then further details
ParameterHubble LearningRebel Ninja
PriceFreeFree
Rating4.8 (10 ratings)5.0 (28 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings1028 — better
Update frequencyEvery 5 days — betterEvery 6 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.1
Further details — not scored
Size106 MB91 MB
Age rating4+4+
DeveloperHubble Learning IncRebel Ninja LLC

Customer experience

Hubble Learning

All ratings10 ratings
Positive90.0%
Neutral10.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Rebel Ninja

All ratings20 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Hubble Learning

Subscriptions2
  • Hubble Monthly Subscription7 Days trial$7.991 Month
  • Hubble Yearly Subscription7 Days trial$34.991 Year
9 purchases

Rebel Ninja

Subscriptions3
  • Rebelflix Silver7 Days trial$24.001 Month
  • Rebel Ninja Membership$48.001 Month
  • Rebelflix Gold7 Days trial$49.001 Month
One-time6
  • The Art Of Tongue Fu$18.99
  • Confidence Xcelerator$18.99
  • 30 Day Challenge 60% Off$97.00
Show 3 more
  • 30 Day Challenge$249.00
  • 60% OFF 6 Week Challenge$399.00
  • 6 Week Kaizen Confidence$999.00

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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