Comparison

Circuit Challenge vs Eikonal

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

Head to head
About

Circuit Challenge

Features
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Welcome to Circuit Challenge! Test your logic and problem-solving skills in this electrifying puzzle game! Your goal is simple: place the correct wires and components so that the current can flow smoothly from the power source to the destination. Each level introduces new obstacles, tricky layouts, and challenging logic puzzles. Plan carefully, rotate wires, and connect every piece of the circuit to light up the target. With intuitive controls, progressively harder levels, and a sleek puzzle design, Circuit Challenge is perfect for players who love brain teasers, engineering, and logic games. Are you ready to become the ultimate circuit master?

About

Eikonal

Features
Read full description

Eikonal is a physics-accurate optical puzzle game. Place and rotate mirrors, prisms, and lenses on a dark canvas, and watch real light rays bend, reflect, and split in real time. There is no submit button โ€” the puzzle recognizes itself as solved the moment your ray field reaches every target. Named after the eikonal equation, the mathematical foundation of geometric optics, the game simulates light the way it actually behaves: angle of incidence equals angle of reflection, white light disperses into red, green, and blue through a prism, and lenses converge and diverge beams along their true paths. 100 PUZZLES ACROSS 5 CHAPTERS โ€ข Reflections โ€” Mirrors. Bounce light to the target. โ€ข Refraction โ€” Prisms. Split white light into its spectrum. โ€ข Convergence โ€” Lenses. Focus and diverge beams. โ€ข Channels โ€” Beam splitters and fiber. Guide multiple paths at once. โ€ข Caustics โ€” Diffraction and curves. The master class. LIGHT THAT FEELS ALIVE Every move updates the entire ray field instantly. Nudge a mirror a degree and the whole scene of light shifts with it. The simulation runs continuously, so solving is a tactile, exploratory act โ€” not a guess-and-check. DESIGNED FOR iPHONE AND iPAD Smooth, responsive ray tracing. Glowing beams against a near-black field. Built for iOS 17 and later, with full iPad support in every orientation. NO NOISE No ads. No in-app purchases. No accounts. No internet required. Just you, the light, and the puzzle. Solve with light.

Screenshots

Circuit Challenge3 screens
Eikonal4 screens

Verdict

The call

The clearest difference is iOS requirement: Circuit Challenge at 13.0 against Eikonal's 17.0. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference ยท 4 level
Circuit Challenge versus Eikonal: the parameters behind the verdict, then further details
ParameterCircuit ChallengeEikonal
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 โ€” better17.0
Further details โ€” not scored
Size25 MB1 MB
Age rating4+4+
DeveloperEmir Alen DervisagicKevin Hillabolt

In-app purchases

None

Circuit Challenge

No in-app purchases

None

Eikonal

No in-app purchases

Questions

Is Circuit Challenge free?
Circuit Challenge is free to download, with no in-app purchases.
Is Eikonal free?
Eikonal is free to download, with no in-app purchases.
Do Circuit Challenge or Eikonal have ads?
Neither Circuit Challenge nor Eikonal shows ads.

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