Comparison

VoxelReconstruct vs Sky Song

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

Head to head
About

VoxelReconstruct

Features
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VoxelReconstruct is a touch-first 3D molecular-assembly puzzle game. You pick atoms from the periodic table and bond them into molecules and crystals following real chemistry — every element has its own valence (the number of free radicals it can bond) and atomic radius, attraction and repulsion derive from size, and a curated bonding whitelist decides which atoms may join. Grow a molecule past a level's threshold and you win. It's a learn-as-you-play chemistry game, made for students building an intuition for stereochemical formulas. [How it plays] ‧ Touch-first: one "Mode" button switches between Navigate (drag to rotate, pinch to zoom) and Place (tap a free-bond dot to drop an atom) ‧ You place the first atom: an empty molecule grows from the moment you tap — nothing is seeded ‧ You choose the element AND the bond order: single –, double =, triple ≡, and coordinate → (a lone pair bonding into an empty orbital) ‧ Real chemistry: VSEPR geometry, ionic vs covalent bonds, multi-bonds that merge radicals so N≡N and O=C=O form naturally ‧ Advanced bonding: coordinate bonds build NH₄⁺, H₃O⁺ and metal complexes, with formal charge / oxidation state shown (e.g. [Cu(NH₃)₄]²⁺ = +2) ‧ Ring closure: two open atoms that come close can bond directly to close a ring (cyclohexane, etc.) ‧ The full periodic table (118 elements), each with its valence, radius and Jmol CPK colour ‧ Curated levels: each level fixes which pairs may bond and mixes in "trap" elements that won't stick — a wrong element is a mistake, three mistakes fail the level; some levels also require a variety of different elements ‧ Full-Table Sandbox: a free-play mode with every element, no mistakes and no failing ‧ Instant English / Traditional-Chinese switch, haptic feedback, progress saved on device (SwiftData) [Pricing] ‧ Free: the complete story campaign, fully playable ‧ Pro (one-time purchase): unlocks only the Full-Table Sandbox — build freely with the whole table ‧ Players who bought the earlier paid version are upgraded to Pro for free automatically [Who it's for] ‧ Chemistry students and enthusiasts building intuition for valence, bonding and 3D formulas ‧ Players who enjoy puzzle and building games ‧ Anyone who wants a gentle, hands-on take on atomic and molecular science [Privacy & Security] ‧ Game progress stays only on your device — nothing is uploaded to the developer ‧ No personal data collection, no ads, no tracking ‧ Built entirely with Apple frameworks, independently by Intoxicated Child Studio Reconstruct your molecules among the atoms

About

Sky Song

Features
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Sky Song is a serene rhythm game played across an open sky. Fly to catch notes to the beat and ascend to higher planes of existence. HOW TO PLAY - Drag, flick, or tap a lane to move - one input, one hop - Catch a note dead center for a Perfect, slightly early or late for a Good - Rewind time with a limited resource to catch the notes you missed HAND-CHARTED PIECES Amazing Grace Canon in D Greensleeves Ave Maria Nocturne Fur Elise Rondo Alla Turca Hungarian Dance No. 5 Moonlight Sonata Every stage has its own pattern and later songs rise in difficulty as you go. PERFECT PERFORMANCE Clear all stages with a perfect rainbow streak to unlock unique gameplay settings. PLAY IT YOUR WAY - Three difficulties per song, from a gentle first pass to high-note runs - Instant restart, plus a rewind that drops you back a few bars instead of to the top - Perfect a song and unlock autoplay, so you can put it on and simply listen FREE PLAY AND OPTIONAL REMOVE ADS Play for free with ads that may appear between completed songs, including during autoplay. Choose the gold store icon on the home screen or Remove Ads in Settings for a one-time purchase that permanently unlocks ad-free play. Restore purchases using the same Apple Account. Existing paid-download owners keep ad-free access. No separate Sky Song account is required. Progress stays on your device and songs remain playable offline. Ads, purchases and restoring purchases require an internet connection. See our privacy policy for advertising data practices.

Screenshots

VoxelReconstruct3 screens
Sky Song4 screens

Verdict

The call

The clearest difference is ads: VoxelReconstruct at none against Sky Song's shown. Sky Song's advantage is update cadence (daily vs every 8 months) and iOS requirement (14.0 vs 17.0). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

VoxelReconstruct ships an update every 8 months, Sky Song daily. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 3 level
VoxelReconstruct versus Sky Song: the parameters behind the verdict, then further details
ParameterVoxelReconstructSky Song
PriceFreeFree
Update frequencyEvery 8 monthsDaily — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.014.0 — better
Further details — not scored
Size17 MB21 MB
Age rating4+4+
DeveloperKuo-Tsun HuangKASAN KALUR WRIGHT

In-app purchases

None

VoxelReconstruct

No in-app purchases

None

Sky Song

No in-app purchases

Questions

Is VoxelReconstruct free?
VoxelReconstruct is free to download, with no in-app purchases.
Is Sky Song free?
Sky Song is free to download, with no in-app purchases.
Do VoxelReconstruct or Sky Song have ads?
Sky Song shows ads; VoxelReconstruct does not.
Which is updated more often, VoxelReconstruct or Sky Song?
VoxelReconstruct ships an update every 8 months, and Sky Song daily. Most recently, VoxelReconstruct was updated on October 30, 2026 and Sky Song on October 31, 2026.

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