Apps by Detlev Voss

Blog - Tips, tricks, and feature highlights for my apps.

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Recent posts

How to start any Sudoku

(Article)

Sudoku, Sudoku technique, Logic puzzle

A blank grid doesn’t need a clever idea — it needs two simple moves, and both are just looking. How to open a Sudoku you’ve never seen before, without notes or guesswork.

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Sudoku is now in the App Store

(Announcement)

Sudoku, App Store launch, Logic puzzle, Design

Sudoku is on the App Store today. A calm, distraction-free logic puzzle for iPhone and iPad — free, no ads, no tracking, no subscription. Optional tip jar inside the app.

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Backup, restore, and cross-device sync

(Article)

Timers & Alarms, Privacy

Timers & Alarms saves your whole setup — timers, alarms, and preferences — to one plain-JSON file you keep. See how backup and restore work, why an open, readable format means your data is never locked in, and how the same file moves your setup to a new iPhone or a second device.

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HIIT and workout intervals

(Article)

Timers & Alarms, Workout, Interval timer

Build a HIIT or circuit workout as one interval timer in Timers & Alarms — a warm-up, your work-and-rest rounds, and a cool-down. See how to set the durations and rounds, give each phase its own sound, and read the current phase at a glance on the Lock Screen, the Dynamic Island, and the widget.

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What’s new in Timers & Alarms 1.1

(Announcement)

Timers & Alarms, Timer, Widget, Pomodoro, Interval timer

Version 1.1 adds a Tomato Timer widget family for Pomodoro on the Home Screen, warm-up and cool-down phases for interval timers, sorting by total duration, and steadier alarms across DST and time-zone changes.

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Live Activities & the Dynamic Island

(Article)

Timers & Alarms, Timer, Live Activity, Dynamic Island

A running timer follows you out of the app. See what Timers & Alarms shows on the Lock Screen and the Dynamic Island — the name, the live countdown, the current phase and round — and how to pause, resume, stop, or start the next round without opening the app.

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Sudoku is coming soon

(Announcement)

Sudoku, Logic puzzle

A second app is on the way. Sudoku — a clean, distraction-free logic puzzle for iPhone and iPad — will be submitted to the App Store very soon.

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