ChallengeCam: Timelapse Proof

Prop up your phone and hit start. Studying, yoga, drawing — whatever you did, it becomes a 5-second timelapse.

■ Great for • Study sessions — show how long you really sat down • Workouts & yoga — replay your home routine in seconds • Hobbies — watch a drawing, knitting or practice session come together • Challenges & groups — a short GIF that's easy to post in a group chat

■ Features • Goal time — 10 minutes to 3 hours, set your own, or no limit • Power-saving screen — the display dims while recording to save battery and heat • Automatic capture — just leave it on, it takes shots at a steady interval • Proof watermark — elapsed time, goal progress and date stamped on every frame • Applause — hear a round of applause when you reach your goal • Blur — soften your face and room, keep the effort visible • Save & share — save to your gallery and share anywhere

■ Private by design • No sign-up • Your recordings never leave your device

Available in English, Korean, Japanese, Chinese and German.

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