Mission alarm & sleep insight
NEW: snore recording, no Apple Watch needed. Your iPhone on the nightstand records the night — just say “Good night in OKIRO” to Siri. Up on the first alarm, daily.
OKIRO is the alarm that never gives up. Solve a mission — math, shake, typing, memory, steps, photo, or a barcode — to prove you're truly awake.
NEW: SNORE RECORDING (no Apple Watch needed)
Tap "I'm going to bed" and your iPhone listens from the nightstand. In the morning it tells you how long you snored. Lock the phone and sleep as usual; it stops by itself when you clear the morning mission.
• Start with Siri: "Good night in OKIRO"
• A Live Activity on the lock screen while it listens
• A "Last night's snoring" home-screen widget
• Clip playback, snore score and the night timeline with Pro
Everything is analysed on your iPhone. Only short clips of loud snoring are kept (up to 12 a night, deleted after 30 days). Nothing is uploaded.
SLEEP ANALYSIS (Pro)
Wear an Apple Watch to bed and OKIRO reads last night from Health: stages, heart rate, HRV, breathing, blood oxygen, wrist temperature, even how loud your room got.
But a number only answers "what". OKIRO answers "why" — in a sentence.
"You had 10 minutes of daylight yesterday, well under your usual, and took 40 minutes to fall asleep."
"Your room reached 68 dB overnight and you surfaced 3 times."
"You went to bed at close to your usual time. Steady beats long."
Every reading is shown against your own normal, so there is nothing to look up. A wrist temperature of 33.6°C tells nobody anything; "0.3° above your normal" tells everybody something.
It shows yesterday's daylight and activity alongside the night they shaped — the parts you can actually change before tonight. Export a fortnight as a spreadsheet if you want to show a doctor.
Read-only. OKIRO never writes to Health and never uploads anything.
WORK BACKWARDS FROM ARRIVAL (free)
Tell it when you need to be somewhere. It subtracts travel and getting-ready time and sets the alarm. No more mental arithmetic at midnight.
SKIP PUBLIC HOLIDAYS (free)
A weekday alarm can sit out Japanese public holidays. Worked out on your iPhone — nothing is downloaded.
POWER NAP (free)
One tap for a 10–90 minute nap. No mission, and it clears itself away afterwards.
44 ALARM TONES, SEARCHABLE (Pro for the full set)
Temple bell, music box, taiko, an old telephone — plus voices that call you until you're up. Search by name or by mood.
TRIPLE-DEFENSE RINGING
Apple's iOS 26 alarm system rings through Silent and Focus modes. A notification chain keeps going even with the app closed. And full in-app ringing drives you to the mission.
WAKE CHECK (Pro)
A few minutes after you stop the alarm, OKIRO asks if you're still up. No answer, and it rings again.
PARTNER SILENT MODE (Pro, Apple Watch)
Wake up without waking whoever is next to you. Your Watch buzzes instead of the phone ringing. If the Watch doesn't respond in time, the phone rings normally — you'll never miss an alarm.
SLEEP SOUNDS
White noise generated on-device, real recordings of rain, waves and fireplace seamlessly looped. Fade-out timer included, no extra downloads.
COMPLETELY PRIVATE
No account. No ads. No tracking. Not your photos, not your sleep, not your recordings — nothing leaves your phone.
OKIRO PRO (subscription)
• Sleep analysis, snore clips and snore score, unlimited alarms, all 7 missions, wake check
• Partner Silent Mode and smart wake on Apple Watch
• All sleep sounds, detailed stats, widgets, all 44 tones
• ¥480/month or ¥2,400/year, with a 7-day free trial
Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends. Manage or cancel in Settings after purchase.
Terms: https://ohtakaisei.github.io/okiro-legal/terms.html
Privacy: https://ohtakaisei.github.io/okiro-legal/privacy.html