# Raster: Sudoku Variants — Killer, Jigsaw & Logic Puzzles

> Killer, Jigsaw & Logic Puzzles (iPhone/iPad app by Ines Golub.)

- Source: https://appshunter.io/ios/app/raster-sudoku-variants/id6804831280 (this page in markdown: same URL + `.md`)
- Developer: [Ines Golub](https://appshunter.io/developer/6795134300)
- Category: Games, Education, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 19 MB
- Languages: American English, Dutch, French (France), German (Germany), Italian, Japanese, Korean, Polish, Brazilian Portuguese, Chinese (Simplified, China) and 3 more
- Released: 2026-10-16
- Data updated: 2026-11-07

## What is Raster?

Sudoku with an honest difficulty scale. Each of the ten stages stands for one solving technique: the hardest one the puzzle needs. Nothing ever requires guessing.

• 10 stages, from the last empty cell to X-Wing, Swordfish and forcing chains
• Hints that name the next technique and point to the cells, not the digit
• 15 rule sets: Classic, Killer, Thermo, Slow Thermo, Arrow, Jigsaw, X-Sudoku, Hyper/Windoku, Even/Odd, Sandwich, Kropki, XV, Renban, German Whispers and Between Line
• Classic and Jigsaw also on a 6×6 grid
• Fog of War: the grid only clears around correctly placed digits
• A daily puzzle with a fixed weekly rhythm: gentle on Monday, hardest on Saturday
• A handbook to look up every technique you have met and every variant rule
• Nearly 5,000 puzzles, each with a unique solution and rated by the solver
• Notes and auto-notes, undo, three error-display modes, optional timer, stars, best times and statistics
• Works offline, no account needed

WHY STAGES INSTEAD OF EASY, MEDIUM, HARD
“Hard” means something different in every app. Raster rates every puzzle the way the sudoku community does: by the hardest human technique it requires. Stage 7 is not more of the same; it is where you need triples. When you reach a new stage, a short card shows the new technique with a worked example, so the ladder doubles as a course.

VARIANTS WITH THEIR OWN LADDER
Every variant is calibrated on the same 1–10 scale, so a stage 5 Killer feels as hard as a stage 5 Classic. The first time you meet a rule, a card explains it with a small solved example.

Raster is free to play. After a solved puzzle a short ad is shown; a one-time in-app purchase removes it for good.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Is Raster safe?

Not enough ratings yet to assess Raster.

## Is Raster legit?

Raster: Sudoku Variants appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Raster is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.0 — 2026-10-16

No release notes.

## More apps by Ines Golub

- [Typewright: Typing Speed Test](https://appshunter.io/ios/app/typewright-typing-speed-test/id6803144694)
- [Pieceful: Jigsaw Puzzle Game](https://appshunter.io/ios/app/pieceful-jigsaw-puzzle-game/id6804831256)
- [Vortis: Fluid Art Simulation](https://appshunter.io/ios/app/vortis-fluid-art-simulation/id6804831733)
- [Lettern – Calm Word Puzzle](https://appshunter.io/ios/app/lettern-calm-word-puzzle/id6818070896)
- [Leonida Atlas: Offline Map](https://appshunter.io/ios/app/leonida-atlas-offline-map/id6824418103)

All apps by Ines Golub: https://appshunter.io/developer/6795134300

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-07.*