Comparison

Osmo Math Wizard EDU vs Rainbow Ghost Rescue

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

Head to head
About

Osmo Math Wizard EDU

This educational game offers a curriculum-inspired math adventure for ages 6-8, focusing on building equations and practicing addition/subtraction. Players help design airships and solve challenges, introducing algebraic thinking through hands-on play.

Highlights
  • Balancing equations
  • Addition and subtraction practice
  • Solving for unknown values
  • Introduction to algebraic thinking
  • Curriculum-inspired learning
  • Hands-on exploration
Read full description

A self-paced and curriculum-inspired learning adventure for ages 6-8, optimized for use in the classroom! Part of the Osmo Math Series for Grades 1-2, Math Wizard takes students on an adventure that builds math skills, with rewards along the way. Osmo Amazing Airships: Build your Math Wizard skills! Students practice balancing equations as they join Rupert in building and designing fantastical airships! Using mathematical thinking plus Rupert’s magical wrench, they’ll deliver packages and navigate through challenges. What they’ll learn Building and balancing equations Addition and subtraction practice Solving for an unknown value Introduction to algebraic thinking ** Requires the Educational Version of Osmo Math Wizard and the Amazing Airships! ** ABOUT OSMO -- 21ST CENTURY PLAY AND LEARNING: Osmo turns tablets into powerful learning tools that inspire independent, hands-on exploration. Our games combine healthy screen time and hands-on play to make learning engaging and fun for every child.

About

Rainbow Ghost Rescue

Embark on a colorful adventure to clean up gooey messes on Pirate Island and beyond. Rescue adorable characters, unlock new friends, and battle a mischievous pirate crab. Explore diverse worlds and enjoy endless fun with multiple game modes.

Highlights
  • Clean up Purple Portal Goo
  • Rescue and collect characters
  • Battle the RainbowGhost Pirate Crab
  • Unlock 40+ story levels
  • Play Marshmallow Mode with infinite levels
  • Collect 30+ playable characters
Features
Read full description

Ahoy!! PiRATE iSLAND got covered in Purple Portal Goo YUCK!! We need the help of the Rainbow Ghosts to clean this mess up! Play as Pink, Blue, Green, or Purple in this new A for Adley game!! PiRATE iSLAND is not the only thing that needs saving! There are tons of characters from Adley's Playspace that are stuck in the Portal Goo! Save friends along the way and add them to your cleanup crew!! Watch out for the RainbowGhost Pirate Crab! He will shoot cannon balls and spread more Portal Goo!! Keep a watchful eye out for future updates. Pirate Island may be clean, but Fairy Forest is next! Imagine if the Dragon turned into the Rainbow Ghost Dragon!?? Be sure to try Marshmallow Mode! It has infinite levels and after every 10 you unlock a new friend! Play as Monkeys, or Turtles, or maybe even Pirate Crabs! There are 30+ playable characters! This FREE game is made for kids to enjoy and is easy to learn while also fun to play. All 40+ story levels will keep you adventuring for hours. Or play infinite maps in Marshmallow Mode! There will be many updates in the future all completely free including Fairy Forest, Mermaid Bay, Unicorn Universe, and many more! As you and the clean-up crew remove the Portal Goo you'll rescue new friends you can play as! Can you complete all these challenges? - Unlock 40+ levels! - Rescue 30+ characters and their trails in Marshmallow Mode! - Defeat the Pirate Captain before PiRATE iSLAND is completely covered in Portal Goo!! As seen on Shonduras - Best Day Ever, A for Adley - Learning & Fun, and G for Gaming

Screenshots

Rainbow Ghost Rescue4 screens

Verdict

The call

The clearest difference is rating: Rainbow Ghost Rescue at 4.3 against Osmo Math Wizard EDU's 3.7. Rainbow Ghost Rescue also leads on ads (none vs shown) and ratings volume (369 vs 3). Osmo Math Wizard EDU's advantage is iOS requirement (9.0 vs 11.0). On price, update cadence and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Rainbow Ghost Rescue holds the better App Store score, 4.3 against 3.7. That said, the two scores are not equally well evidenced: Rainbow Ghost Rescue has 369 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Osmo Math Wizard EDU ships an update fortnightly, Rainbow Ghost Rescue every 3 weeks. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.

Scorecard6 real differences · 4 level
Osmo Math Wizard EDU versus Rainbow Ghost Rescue: the parameters behind the verdict, then further details
ParameterOsmo Math Wizard EDURainbow Ghost Rescue
PriceFreeFree
Rating3.7 (3 ratings)4.3 (369 ratings) — better
Positive reviews—79.8% of reviews
Number of ratings3369 — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS9.0 — better11.0
Further details — not scored
Size958 MB288 MB
Age rating4+4+
DeveloperTangible PlayShonduras Inc.

Customer experience

Osmo Math Wizard EDU

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

Rainbow Ghost Rescue

All ratings300 ratings
Positive82.7%
Neutral4.0%
Negative13.3%
Written reviews99 reviews
Positive79.8%
Neutral5.1%
Negative15.2%

Bugs and requests

Osmo Math Wizard EDU

Not enough reviews yet to summarise bugs or requests.

Rainbow Ghost Rescue

Reported bugs

3 issues
  • Game freezing or closing unexpectedly
  • Levels not registering as completed
  • Inconsistent controls or responsiveness

Requested features

4 requests
  • More diverse levels and challenges
  • Additional characters and customization options
  • Ability to save progress and resume later
  • Multiplayer or co-op game modes

In-app purchases

None

Osmo Math Wizard EDU

No in-app purchases

None

Rainbow Ghost Rescue

No in-app purchases

Questions

Is Osmo Math Wizard EDU free?
Osmo Math Wizard EDU is free to download, with no in-app purchases.
Is Rainbow Ghost Rescue free?
Rainbow Ghost Rescue is free to download, with no in-app purchases.
Which has better reviews, Osmo Math Wizard EDU or Rainbow Ghost Rescue?
Rainbow Ghost Rescue is rated higher. Osmo Math Wizard EDU averages 3.7 out of 5 from 3 ratings, while Rainbow Ghost Rescue averages 4.3 from 369 ratings.
Do Osmo Math Wizard EDU or Rainbow Ghost Rescue have ads?
Osmo Math Wizard EDU shows ads; Rainbow Ghost Rescue does not.
Which is updated more often, Osmo Math Wizard EDU or Rainbow Ghost Rescue?
Osmo Math Wizard EDU ships an update fortnightly, and Rainbow Ghost Rescue every 3 weeks. Most recently, Osmo Math Wizard EDU was updated on October 21, 2026 and Rainbow Ghost Rescue on October 27, 2026.

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