irumea Sudoku

Makes you a better solver

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Crack Hard instead of sitting it out. irumea shows you the technique you need right now and lets you take the step yourself. One goal: getting better. Sudoku that makes you better — not just busy. Other apps make puzzles longer. irumea shows you the technique you need right now and lets you take the step yourself. Every hint names the situation, marks where to look and explains why this is the only way. You keep solving — and learn as you go. SIX CHAPTERS, ONE LADDER Each chapter is a way of thinking, not a difficulty level: • Only One Way — singles • Already Taken — pointing and claiming • One Digit at a Time — X-Wing, Skyscraper and relatives • Tertium non datur — XY-Wing, W-Wing • Two Colors — coloring and chains • What If — forcing chains 160 hand-picked levels, five per technique, built so the technique actually shows up. No puzzle is padded. HINTS THAT EXPLAIN A hint shows you the situation and names the technique. Go deeper if you want — all the way to the reasoning. The digit itself is yours to place. A hint costs one from your balance; you get one back every day. ACADEMY 33 short lessons, one per technique, each with an exercise. Meet a technique in play and its lesson unlocks. Reading is always free. CHECKS At the end of a chapter you show what you've got: puzzles without hints, without coach, without mistakes. DAILY One daily per chapter, stars, streaks with freezes, a calendar. Missed is missed — no pressure, just a rhythm. YOUR RULES Guided or free: see mistakes at once or only at the end. Optional three-mistake limit. Notes, exclusion notes, auto-cleanup, undo — all there, none imposed. BEAUTIFUL Four scenes: Wheatfield, Daisies, Starry Night, Fireflies. Light and dark. Color-blind safe: every meaning is coded twice. PREMIUM & AD-FREE One-time purchases, no subscription. Premium: unlimited hints, no ads, two streak freezes a month, one continue at the mistake limit per puzzle — and every future variant and practice set included. Ad-free is available on its own. HONEST No account, no subscription, no banners, no tracking. An ad at most after a solved puzzle; videos only as an offer with a visible video symbol — never a condition for progress. Your progress stays on your device and in your phone's backup. English and German. By Irumea OÜ.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

New in 1.1: Premium (unlimited hints, ad-free, extras) and Ad-free as one-time purchases — no subscription. The hint balance pays +1 every day you play; optionally a video for +1 extra, to save a streak or to replay a past daily. Occasionally an ad after a solved puzzle, never mid-game. Share your daily result as a card. Anonymous usage statistics, switchable off in Settings.

Version 1.1

The developer, Irumea, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Irumea OU
Size
52.4 MB
Category
Puzzle
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and German
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Irumea OÜ
  • Developer Website
  • Privacy Policy