Oto Diary

Sound Diary is a simple audio journal — record 10 to 60 seconds of your daily world and let it become a gift to your future self. ■ A Time Capsule, One Year Later Every recording you make today will reappear exactly one year from now as a Time Capsule. The birds, the laughter, the rain — moments you forgot you kept. Words can't capture everything, but sound can. ■ Just Record. That's It. Press and hold the vintage cassette reel to start recording. Add a title, pick your mood, and save. No complex setup, no accounts, no cloud required. ■ Moods & Calendar Tag each recording with one of five moods: Calm, Happy, Tired, Tender, or Wonder. Browse past recordings in the Calendar view, or zoom out with the Year View to see your entire year at a glance. Premium users get a color-coded mood heatmap across both views. ■ Build Your Streak Record every day to grow your streak. The longer you keep going, the more future gifts you're leaving for yourself. ■ Fully Offline & Private All recordings stay on your device. Nothing is uploaded to any server. Your sounds belong to you alone. Every feature works without an internet connection.