Comparison

Element OTG vs QM Simulator

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

Head to head
About

Element OTG

Features
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β€’ Complete Periodic Table - All 118 elements with detailed information β€’ Interactive Learning Center - Chemistry quizzes and symbol practice β€’ Smart Search & Filter - Find elements by name, symbol, or properties β€’ Dark Mode Support - Choose light, dark, or follow system theme β€’ Responsive Design - Perfect for phones, tablets, and desktops

About

QM Simulator

Features
Read full description

QM Simulator is a hands-on quantum physics atlas: 54 interactive simulation modules spanning the full arc from quantum foundations to quantum information, paired with 47 bilingual articles. Every computation and rendering happens on your device β€” no network, no sign-up. WHAT YOU CAN DO β€’ Play with parameters: adjust slit spacing, raise a potential barrier, tune cavity coupling β€” every chart recomputes in real time. β€’ Learn by level: Basics β†’ Advanced (perturbation, degeneracy, radiation) β†’ Topics (Bell inequalities, quantum error correction, Grover's algorithm), from high-school extension to university QM. β€’ Read linked notes: each article is tied to its simulation, with formulas and figures side by side β€” switch between Chinese and English anytime. β€’ Explore freely: Bloch sphere, hydrogen wavefunctions, blackbody radiation, Compton scattering, Kronig–Penney, BB84 quantum key distribution β€” from Planck's 1900 hypothesis to today's quantum computing. WHO IT'S FOR β€’ Physics students: turn textbook formulas into images you can see and manipulate. β€’ Educators & researchers: validate intuitions and demonstrate in class. β€’ The curious: no derivation skills needed β€” dial the parameters and build quantum intuition. HIGHLIGHTS β€’ 54 simulation modules, all driven by real physics computation (not pre-baked animations). β€’ 47 in-depth articles, fully bilingual, with figures and code. β€’ Fully offline: no ads, no purchases, no tracking, no account required. β€’ Chinese & English UI, follows system language. Educational use: QM Simulator works as a lecture-demonstration companion for quantum mechanics courses.

Screenshots

Element OTG4 screens
QM Simulator4 screens

Verdict

The call

The clearest difference is ads: QM Simulator at none against Element OTG's shown. Element OTG's advantage is iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences Β· 4 level
Element OTG versus QM Simulator: the parameters behind the verdict, then further details
ParameterElement OTGQM Simulator
PriceFreeFree
Update frequencyMonthlyβ€”
AdsYesNo β€” better
In-app purchasesNoNo
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS13.0 β€” better17.0
Further details β€” not scored
Size25 MB29 MB
Age rating4+4+
DeveloperJapality Limitedι™… ιƒ­

In-app purchases

None

Element OTG

No in-app purchases

None

QM Simulator

No in-app purchases

Questions

Is Element OTG free?
Element OTG is free to download, with no in-app purchases.
Is QM Simulator free?
QM Simulator is free to download, with no in-app purchases.
Do Element OTG or QM Simulator have ads?
Element OTG shows ads; QM Simulator does not.

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