Gridflow vs Bubu Sudoku

Gridflow is a logic puzzle that appears daily — quiet, precise, and without distraction. Connect numbered nodes with bridges. Each node dictates exactly how many bridges must connect to it — not one more, not one less. Bridges run horizontally or vertically and may not cross. In the end, the entire network must be connected. Easy to learn. Hard to master. FOUR DIFFICULTIES. EVERY DAY. ALL OF THEM. Easy (5×5) — Two minutes of focus. Perfect for the morning. Medium (7×7) — Challenging without being frustrating. Hard (9×9) — When you really want to step outside your comfort zone. Expert (11×11) — No mercy. For those who want it that way. Four fresh puzzles every day. An archive of past weeks. Your streak counts. NO TIMER. NO PRESSURE. NO ALGORITHM. Gridflow doesn't reward speed — it rewards finishing. The app gives you three hints per day. Needing one isn't failure. No scoring system that compares you to others. No feed to distract you. No subscription designed to exploit forgetting. GRIDFLOW PREMIUM – ONE-TIME 4.99 € A single purchase. No expiry date. → Full puzzle archive (months back) → Unlimited hints → Exclusive themes: Glacier, Midnight, Sand Premium is optional. The daily puzzles are and will remain free. OFFLINE. PRIVATE. LOCAL. Gridflow requires no internet connection. No sign-up, no account, no ads. All puzzles are stored locally — nearly 600 hand-reviewed puzzles, for over a year. Analytics via TelemetryDeck: GDPR-compliant, fully anonymous, no personal data collected. Made by Loopcrafts in Germany. For everyone who takes puzzles seriously — and wants to relax while doing it.

Bubu Sudoku is a clean, focused Sudoku app for daily play and steady practice. Play a fresh daily puzzle, choose a difficulty, or pick Mini for a quick 6x6 board with 2x3 boxes. Use notes, undo and redo freely, track progress, and improve your solving speed over time. An optional local daily reminder helps you keep your streak — no account or cloud sync required. Sudoku Pro is a one-time unlock for Master and Evil difficulty, Killer Sudoku, Sprint and Marathon modes, and six months of daily history. Game Center support lets players submit best times to leaderboards by mode and difficulty. Local play works without an account.