Comparison

Engineering Adventures vs Osmo Numbers Classic

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

Head to head
About

Engineering Adventures

This app complements an out-of-school engineering curriculum by providing audio messages triggered by QR codes in accompanying journals. It covers 11 different engineering units, from building earthquake-resistant structures to designing space gloves.

Highlights
  • QR code scanner
  • Audio messages from characters
  • 11 engineering units
  • Complements curriculum
  • Interactive learning
Features
Read full description

Messages from the Duo is designed to be used in conjunction with the out-of-school time engineering curriculum Engineering Adventures. Eleven units are available, including: 1. Hop to It: Safe Removal of Invasive Species 2. Bubble Bonanza: Engineering Bubble Wands 3. To the Rescue: Engineering Aid Drop Packages 4. Shake Things Up: Engineering Earthquake Resistant Buildings 5. Go Green: Engineering Recycled Racers 6. Liftoff: Engineering Rockets and Rovers 7. The Sky’s the Limit: Engineering Flying Technologies 8. Music to My Ears: An Acoustical Engineering Challenge 9. A Slippery Slope: Engineering Avalanche Protection Systems 10. Light Up the Night: An Electrical Engineering Challenge 11. In Good Hands: Engineering Space Gloves Educators and kids can use the special QR code scanner in this app to scan the codes in their Engineering Journals and play audio messages from India and Jacob, Engineering Adventures’ “travelling duo.” For more information about how to download or purchase an Educator Guide and Engineering Journal, visit the Engineering Adventures website at engineeringadventures.org. Produced by Owen Berliner and the Engineering is Elementary Team Developed by Sean Fitzgerald and Tarrant Cutler Illustrated by Ross Sullivan-Wiley

About

Osmo Numbers Classic

Engage children in hands-on math play by adding, counting, and multiplying tiles to pop number bubbles. This interactive game fosters a creative and explorative mindset towards mathematics, making learning fun and engaging in a vibrant underwater world.

Highlights
  • Add, count, and multiply tiles
  • Pop number bubbles
  • Collect over 90 unique fish
  • Learn math creatively
  • Develop problem-solving skills
  • Hands-on play experience
Read full description

Add, count & multiply tiles to pop the number bubbles. Popping enough will free 
fish & unleash a lightning storm! Learn to be the numbers master. **One of 2016’s most intuitive product designs.** - Fast Company Award "...once again, Osmo has built something wonderfully creative and interactive." - Venture Beat "Osmo Numbers takes the fear out of figures." - Forbes "…revamp the unimaginative worksheets educators use to teach math" - TechCrunch When kids understand there are many ways to solve a problem, math becomes creative & fun. By having no wrong answers, we replace fear of math with an explorative mindset. Your kids will play in this beautiful engaging underwater world for ages, collecting over 90 fish of all kinds, from Rainbow to Frankenfish! *Requires the Osmo Base and Numbers tiles, found at www.playosmo.com * Please see our device compatibility list here: https://support.playosmo.com/hc/articles/115010156067 About Osmo Osmo is using the screen to create a new healthy, hands-on learning experience that promotes creativity, problem-solving and social interaction. We do this with our reflective artificial intelligent technology.

Screenshots

Engineering Adventures3 screens
Osmo Numbers Classic4 screens

Verdict

The call

The clearest difference is monetization model: Engineering Adventures at free against Osmo Numbers Classic's free with in-app purchases. Engineering Adventures also leads on iOS requirement (8.0 vs 15.0). Osmo Numbers Classic's advantage is ratings volume (264 vs 3) and rating (4.0 vs 3.7). On price, ads, in-app purchases and device support 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

Osmo Numbers Classic holds the better App Store score, 4.0 against 3.7. That said, the two scores are not equally well evidenced: Osmo Numbers Classic has 264 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of Engineering Adventures's written reviews are positive against 54% of Osmo Numbers Classic's.

UpkeepUpdate frequency

Engineering Adventures ships an update every 7 months, Osmo Numbers Classic every 2 months. The most recent releases landed on November 11, 2026 and November 12, 2026 respectively.

Scorecard6 real differences · 4 level
Engineering Adventures versus Osmo Numbers Classic: the parameters behind the verdict, then further details
ParameterEngineering AdventuresOsmo Numbers Classic
PriceFreeFree
Rating3.7 (3 ratings)4.0 (264 ratings) — better
Positive reviews33.3% of reviews54.1% of reviews — better
Number of ratings3264 — better
Update frequencyEvery 7 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS8.0 — better15.0
Further details — not scored
Size159 MB185 MB
Age rating4+4+
DeveloperMuseum of ScienceTangible Play

Customer experience

Engineering Adventures

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Osmo Numbers Classic

All ratings264 ratings
Positive71.2%
Neutral8.0%
Negative20.8%
Written reviews61 reviews
Positive54.1%
Neutral11.5%
Negative34.4%

Bugs and requests

Engineering Adventures

Not enough reviews yet to summarise bugs or requests.

Osmo Numbers Classic

Reported bugs

10 issues
  • Apps not loading
  • Never-ending loading screen
  • App crashes
  • Cannot access camera
  • Doesn't recognize tiles properly
Show 5 more
  • Profile and progress not saving
  • Multiplication level displays addition
  • Combos not detected often
  • Game freezes
  • App unusable due to camera access issues

Requested features

10 requests
  • Add more levels
  • Include verbal number prompts
  • Simpler starting point for younger kids
  • More varied gameplay types
  • Add an exit button for games
Show 5 more
  • More challenging levels
  • Allow profile and progress saving
  • Fix multiplication portion issues
  • Add visual cues for words
  • Revert to older design

In-app purchases

None

Engineering Adventures

No in-app purchases

None

Osmo Numbers Classic

No in-app purchases

Questions

Is Engineering Adventures free?
Engineering Adventures is free to download, with no in-app purchases.
Is Osmo Numbers Classic free?
Osmo Numbers Classic is free to download, with no in-app purchases.
Which has better reviews, Engineering Adventures or Osmo Numbers Classic?
Osmo Numbers Classic is rated higher. Engineering Adventures averages 3.7 out of 5 from 3 ratings, while Osmo Numbers Classic averages 4.0 from 264 ratings.
Do Engineering Adventures or Osmo Numbers Classic have ads?
Neither Engineering Adventures nor Osmo Numbers Classic shows ads.
Which is updated more often, Engineering Adventures or Osmo Numbers Classic?
Engineering Adventures ships an update every 7 months, and Osmo Numbers Classic every 2 months. Most recently, Engineering Adventures was updated on November 11, 2026 and Osmo Numbers Classic on November 12, 2026.

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