Comparison

Project Chiron vs Rubicon

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

Head to head
About

Project Chiron

Features
Read full description

Stuck on a math problem you refuse to give up on? Chiron writes the smallest hint on your page, just enough to keep you thinking, without spoiling the math. Write your working by hand. Chiron reads every line as you go and steps in only when it helps: a nudge when you're stuck, a question when you're close, a quiet check when you're not sure. It teaches. It never lectures. KEEP THINKING โ€ข Hints sized to the moment: the smallest push that keeps you moving โ€ข Get pointed at the slip, not handed the answer โ€ข Ask out loud, "where do I even start?", and talk it through DOES THE MATH PROPERLY โ€ข Every check is grounded in a real symbolic engine, so feedback is exact, never a chatbot's guess โ€ข Catches the sign you flipped, the solution you gained, the step that doesn't follow โ€ข Built for real work: algebra, trigonometry, calculus, ODEs, logs and more BRING YOUR OWN โ€ข Snap any problem with the camera and start working โ€ข Upload your notes and Chiron works from your course, not a generic one Best with an Apple Pencil. Chiron. Keep thinking.

About

Rubicon

Features
Read full description

Master math through exciting mini-games, earn XP, and unlock fun in-game rewards with Rubicon โ€” a fast, fun, and gamified learning experience! Solve brain-teasing math puzzles, collect XP (Learning Points), and enjoy new challenges every week. Unlock gems and customize your in-game avatar as you learn. Whether you're practicing your skills or exploring new math adventures, Rubicon makes learning exciting and rewarding โ€” all in a safe, child-friendly environment. Features: - Quick math games that help develop real skills - Customize your avatar with unlockable outfits - Earn XP (Learning Points) to see your personal growth - Climb weekly leaderboards (with no personal information shared) - Collect gems to unlock visual upgrades Note: Rubicon is not affiliated with Roblox or any other platform. All virtual rewards are earned through gameplay and can only be used within the app to unlock educational or entertainment features. No real-money rewards or exchanges are offered.

Screenshots

Project Chiron4 screens
Rubicon3 screens

Verdict

The call

The clearest difference is in-app purchases: Project Chiron at none against Rubicon's 7. Project Chiron also leads on ads (none vs shown). Rubicon's advantage is update cadence (every 2 days vs every 5 days) and iOS requirement (13.0 vs 16.0). On price and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Rubicon sells 7 one-off in-app purchases. Project Chiron asks for nothing beyond the download.

UpkeepUpdate frequency

Project Chiron ships an update every 5 days, Rubicon every 2 days. The most recent releases landed on September 17, 2026 and September 9, 2026 respectively.

Scorecard4 real differences ยท 2 level
Project Chiron versus Rubicon: the parameters behind the verdict, then further details
ParameterProject ChironRubicon
PriceFreeFree
Update frequencyEvery 5 daysEvery 2 days โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.013.0 โ€” better
Further details โ€” not scored
Size144 MB698 MB
Age rating4+4+
DeveloperJames BoothOneTwoPlay B.V.

In-app purchases

None

Project Chiron

No in-app purchases

7 purchases

Rubicon

One-time7
  • 500 Gems$4.99
  • Battle Pass Premium$4.99
  • 1000 Gems$9.99
Show 4 more
  • 1500 Gems$14.99
  • 2000 Gems$19.99
  • 2500 Gems$24.99
  • 3000 Gems$29.99

Questions

Is Project Chiron free?
Project Chiron is free to download, with no in-app purchases.
Is Rubicon free?
Rubicon is free to download, with in-app purchases available.
Do Project Chiron or Rubicon have ads?
Rubicon shows ads; Project Chiron does not.
Which is updated more often, Project Chiron or Rubicon?
Project Chiron ships an update every 5 days, and Rubicon every 2 days. Most recently, Project Chiron was updated on September 17, 2026 and Rubicon on September 9, 2026.

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