Keloric vs Fill In Numbers
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Keloric
A physics-based puzzle game where you manipulate heat sources to solve challenges. Explore a variety of materials with unique thermal properties and discover emergent solutions. Features daily and endless modes for continuous gameplay.
- Real-time heat simulation
- Diverse material properties
- Phase-change mechanics
- Daily generated puzzles
- Endless mode
- Level sharing
- Universal app support
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KELORIC is a thermal-physics puzzle game. You don't draw paths. You don't push blocks. You place heat and cold sources on a grid of materials — metal, glass, wood, ice, wax, walls — and let the heat actually flow. Every cell is simulated tick by tick. A metal corridor spreads heat fast. Wood throttles it. A wall stops it dead. An ice pack absorbs heat, holds the path closed, and then — once enough energy has melted it — turns into water and lets the heat through. Wax does the same trick at 50°C, then floods heat through faster than metal. Place your sources, watch the temperature spread, and hold every target inside its band long enough to win. — REAL PHYSICS — A cellular-automaton solver drives every cell on the board. Heat moves between neighbors based on conductivity. Materials with high heat capacity warm slowly. Phase-change cells stall the system, absorbing latent heat before transforming. There are no hidden rules: what you see in the colors is what the simulation is doing. — SIX PACKS · 178 PUZZLES — • Fundamentals (free) — 28 levels including a phase-change introduction. Learn the mechanics step by step. • Advanced — 25 levels of tighter routes and narrower target bands. • Extremes — 25 levels with ±10°C bands and unforgiving budgets. • Impossible — 25 levels for players who beat the rest and want more. • Crucible — 25 levels built around melting ice. Heat dams, buffer races, slow burns, cascading melts. • Forge — 20 levels built around wax. Solid wax blocks heat like wood. Heat it to 50°C and it melts into molten wax — which conducts heat faster than metal. Burn through gates, time your melts, mix wax with ice for compound puzzles. — DAILY + ENDLESS — A new puzzle every day, generated from the date. Build a streak. One missed day per month is forgiven. Endless mode generates infinite puzzles with rising difficulty. How far can you push your streak before a level breaks you? — GAME CENTER — Fourteen achievements. Two leaderboards. Compete on Endless best streak and Daily current streak. — BUILT FOR iPHONE AND iPAD — Universal layout. Portrait on iPhone, all-orientation on iPad. Drag to paint, double-tap to erase. CloudKit syncs your progress across devices. — NO ADS. NO ENERGY METER. NO TARGETED TRACKING. — Buy a pack once, own it forever. Free packs are genuinely free — no premium currency, no daily limits. Optional anonymous gameplay analytics help us tune level difficulty (opt-out in Settings → Privacy). No personal data is collected. — SHARE YOUR FAVORITES — Export any level you've played as a `.keloric` file or paste-code. Import others' levels straight into the app from a URL or AirDrop. If you liked Hexcells, Opus Magnum, SpaceChem, or Zachtronics games, Keloric is built in that lineage — but with a physics core that gives every puzzle a fingerprint-unique solution path.
Fill In Numbers
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Number Fill In is a focused logic puzzle game where players place number entries into a crossword-style grid. Choose a board size, select a difficulty, and complete the puzzle by matching each number to the correct across or down slot. Features include quick start, selectable grid sizes, Easy through Expert difficulty levels, save and resume, timer tracking, undo and redo, hints, completed game history, and a clean portrait layout for iPhone and iPad. The game does not require an account or login. Progress and game history are stored locally on the device.
Screenshots
Verdict
The clearest difference is in-app purchases: Fill In Numbers at none against Keloric's 5. Fill In Numbers also leads on iOS requirement (17.0 vs 26.4). Keloric's advantage is ads (none vs shown) and update cadence (daily vs every 9 days). On price 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
Both are free to download. Keloric sells 5 one-off in-app purchases. Fill In Numbers asks for nothing beyond the download.
Keloric ships an update daily, Fill In Numbers every 9 days. The most recent releases landed on October 22, 2026 and October 31, 2026 respectively.
| Parameter | Keloric | Fill In Numbers |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Daily — better | Every 9 days |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.4 | 17.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Kevin Hillabolt | Moinuddin Girach |
In-app purchases
Keloric
- Advanced Pack$0.99
- Extremes Pack$0.99
- Impossible Pack$0.99
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- Crucible Pack$0.99
- Forge Pack$0.99
Fill In Numbers
No in-app purchases








