Shadow Match Quest vs Eikonal
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Shadow Match Quest
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Shadow Match Quest is a minimalist perspective-puzzle. A hidden 3D object sits behind the scenes—only its silhouette is visible. Your job: rotate the object in 3D until its shadow perfectly matches the target. Why you’ll love it • Intuitive controls — smooth, continuous rotation that tracks your finger. • 500 progressive levels — from bite-size warmups to brain-teasing masters. • Crisp visuals — tasteful themes and clean silhouettes. • No timers. No energy. Take your time and enjoy the “click” when it lines up. • Offline friendly — play anywhere. How it works 1. Study the TARGET silhouette. 2. Rotate the unseen 3D object in all directions. 3. When your live shadow overlaps the target well enough, the level clears! Whether you’ve got a minute or an hour, Shadow Match Quest delivers relaxing focus and punchy “got it!” wins. Perfect for puzzle lovers, optical-illusion fans, and anyone who likes smart, satisfying games.
Eikonal
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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 — 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 • Reflections — Mirrors. Bounce light to the target. • Refraction — Prisms. Split white light into its spectrum. • Convergence — Lenses. Focus and diverge beams. • Channels — Beam splitters and fiber. Guide multiple paths at once. • Caustics — 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 — 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
Verdict
Shadow Match Quest and Eikonal are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Shadow Match Quest | Eikonal |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.5 | 17.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Neel Roy | Kevin Hillabolt |
In-app purchases
Shadow Match Quest
No in-app purchases
Eikonal
No in-app purchases
Questions
Is Shadow Match Quest free?
Is Eikonal free?
Do Shadow Match Quest or Eikonal have ads?
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