Comparison

GetPrincipia vs Physics Playground App

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

Head to head
About

GetPrincipia

Features
Read full description

Unlocking mathematical concepts with visuals, practice, progress tracking, study guides, and linking disciplines and topics across the field. Terms of Use: https://getprincipia.com/terms Privacy Policy: https://getprincipia.com/privacy

About

Physics Playground App

Explore the universe of physics and math through interactive simulations and real-time equation adjustments. Learn concepts from basic counting to advanced theories with hands-on playgrounds and mini-games that earn you badges. Designed for all levels of understanding, from children to PhDs.

Highlights
  • Interactive physics and math playgrounds
  • Real-time equation adjustments
  • Adjustable difficulty slider (Child to PhD)
  • Mini-games with badge rewards
  • Concept map for interconnected ideas
  • Offline-first functionality
  • No ads or accounts required
Features
Read full description

Physics Playground turns science into games you play with your hands. Fire a cannon, slide pucks across the ice, fold a protein, crack a cipher, bend starlight around a black hole and forge a star. Every game runs on real physics, chemistry, biology, math or computer science, so you learn by doing, not by reading. 63 GAMES, FIVE SUBJECTS From projectiles, orbits and lasers to entanglement and the Big Bang; atoms, reactions and batteries; cells, genes and the immune system; fractions, fractals and calculus; logic gates, sorting, networks and machine learning. Each game has its own controls and its own goal. PLAY AT YOUR LEVEL Pick Curious Kid, Teen, Undergrad or PhD. Games start on Easy, Normal or Hard to match, and PhD turns off the hints for numbers only play. Free Play lets you experiment with no clock. EARN EVERY STAR Clear stages, earn up to three stars, beat your best score and collect badges. Light up your constellation and unlock the Universe Tuner when you master them all. BUILT FOR IPHONE DUO Fold it into a tabletop and the hinge aims the cannon. Open it like a book and the game spreads across both halves, with controls on their own side. Close it and keep playing on the outer screen. NEW GRAPHICS, SMOOTH AT 120 HZ Glowing particles, warped spacetime, lensed starlight and live fractals, with haptics tuned to every bounce and blast. GO DEEPER Every game links trusted sources: textbooks, papers, lectures and courses. Works on iPhone, iPad, Mac and Apple Vision Pro. Ask Siri to open a game. No account, no ads, no tracking.

Screenshots

GetPrincipia4 screens
Physics Playground App4 screens

Verdict

The call

The clearest difference is in-app purchases: Physics Playground App at none against GetPrincipia's 2. Physics Playground App also leads on update cadence (every 3 weeks vs every 2 months). GetPrincipia's advantage is iOS requirement (15.1 vs 17.0). On price, ads 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. GetPrincipia sells 2 in-app purchases, starting at $6.99 per month. Physics Playground App asks for nothing beyond the download.

UpkeepUpdate frequency

GetPrincipia ships an update every 2 months, Physics Playground App every 3 weeks. The most recent releases landed on October 31, 2026 and November 13, 2026 respectively.

Scorecard3 real differences · 6 level
GetPrincipia versus Physics Playground App: the parameters behind the verdict, then further details
ParameterGetPrincipiaPhysics Playground App
PriceFreeFree
Rating—3.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size38 MB24 MB
Age rating4+4+
DeveloperAxiom 38 LLCAJA Digital LLC

In-app purchases

2 purchases

GetPrincipia

Subscriptions2
  • Monthly7 Days trial$6.991 Month
  • Annual7 Days trial$44.991 Year
None

Physics Playground App

No in-app purchases

Questions

Is GetPrincipia free?
GetPrincipia is free to download, with in-app purchases available.
Is Physics Playground App free?
Physics Playground App is free to download, with no in-app purchases.
Do GetPrincipia or Physics Playground App have ads?
Neither GetPrincipia nor Physics Playground App shows ads.
Which is updated more often, GetPrincipia or Physics Playground App?
GetPrincipia ships an update every 2 months, and Physics Playground App every 3 weeks. Most recently, GetPrincipia was updated on October 31, 2026 and Physics Playground App on November 13, 2026.

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