Comparison

Graviton Sim vs By

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

Head to head
About

Graviton Sim

Read full description

A physics simulation exploring gravitational dynamics and orbital mechanics.

About

By

Features
Read full description

The Physics of Stars β€” in your hand. By-Pass is an interactive physics laboratory that brings the fascinating complexity of Newtonian mechanics to your iPad and iPhone. Here, you become the architect of orbital systems and watch simple forces give rise to highly complex mathematical patterns. Unlike simple animations, By-Pass uses its own physics engine with a simulation rate of 60 Hz to calculate real gravitational interactions accurately and without compromise. The physical core: Master of Orbits: Create satellites and planets with intuitive gestures. Use drag gestures to define the initial launch velocity and watch as objects settle into stable orbits or drift away into the vastness of outer space. Dynamic Gravitational Centers: Choose between 1, 2, or 3 suns. Experiment with the unstable and fascinating solutions of the famous three‑body problem. Each additional center dramatically alters the gravitational field and sends your planets onto unpredictable, dancing trajectories. Variable Gravitational Exponents: Switch between a fully realistic simulation (exponent 2.0) and modified fields for extremely long‑lasting, geometric path traces. Precision & Performance: Experience the simulation with a render target of 120 FPS. The physics runs independently at 60 Hz, ensuring smooth visuals even in the most complex systems. Procedural Matter: Each planet (Rocky, Lava, Gas, Ocean, Icy) is generated at runtime and behaves as a discrete physical entity within the simulation.

Screenshots

Graviton Sim4 screens
By4 screens

Verdict

The call

The clearest difference is device support: Graviton Sim at 4 against By's 2. Graviton Sim also leads on iOS requirement (15.6 vs 26.0). On price, update cadence, ads and in-app purchases 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.

UpkeepUpdate frequency

Graviton Sim ships an update every 9 days, By fortnightly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard2 real differences Β· 4 level
Graviton Sim versus By: the parameters behind the verdict, then further details
ParameterGraviton SimBy
PriceFreeFree
Update frequencyEvery 9 days β€” betterFortnightly
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod, Mac β€” betteriPhone, iPad
Requires iOS15.6 β€” better26.0
Further details β€” not scored
Size63 MB14 MB
Age rating4+4+
DeveloperScott CarnettAppno GmbH

In-app purchases

None

Graviton Sim

No in-app purchases

None

By

No in-app purchases

Questions

Is Graviton Sim free?
Graviton Sim is free to download, with no in-app purchases.
Is By free?
By is free to download, with no in-app purchases.
Do Graviton Sim or By have ads?
Neither Graviton Sim nor By shows ads.
Which is updated more often, Graviton Sim or By?
Graviton Sim ships an update every 9 days, and By fortnightly. Most recently, Graviton Sim was updated on October 28, 2026 and By on October 24, 2026.

Other comparisons