Crybell: Baby Cry Alarm

Crybell is a cry alarm for parents and caregivers who sleep in the same room as their baby.

Crybell listens for the sound of crying and alerts you with a notification or alarm so you can attend to your baby. It does not monitor health, breathing or vital signs. Sound is analysed only on your phone. Detection can fail (battery, other apps using the microphone, noise, distance); it does not replace adult supervision or safe-sleep practices.

HOW IT WAKES YOU
• When crying is confirmed, the phone vibrates and shows a notification, which can also reach your smartwatch.
• If the crying goes on, the alarm starts quietly and gets louder. Crying with pauses shorter than a minute adds up.
• Pick a profile for the night: Vibrate only, Gentle (alarm after 60 s of crying), Normal (30 s) or Loud (10 s, with the flashlight blinking).
• Hold "I'm up" to stop the alarm; then there are no more alarms for 20 minutes.

A NIGHT YOU CAN CHECK
• A watchdog warns you when a call or another app takes the microphone, when the battery runs low and when Do Not Disturb would block the alarm.
• If the system closes Crybell in the night, a notification (not an alarm) asks you to resume listening.
• A night readiness checklist and a 30-minute test night check your phone.
• In the morning, the night summary shows every interruption and its cause.
• Start from a Quick Settings tile, a home-screen widget or a bedtime reminder.

THE LOG
• Feeds (breast or bottle, ml or oz), sleep, diapers and pumping.
• Temperature in °C or °F (just the reading, no ratings) and events with any name, such as a bath, a walk or the midwife.
• A note on every entry. Entries for past days too.
• The "Diary" widget: end a running feed or sleep with one tap. Shortcuts on the app icon.
• A timeline of crying and entries. Mark what helped with one tap.
• At the alarm: the last logged feed, or what helped before; never from the sound of the cry.
• Statistics for the last 7 days, including bottle milk per day; hold a bar to see its value.
• A printout for the midwife or a PDF, with or without notes. Export and import (CSV, JSON).
• A shared log with your consent: up to 4 phones, end-to-end encrypted, free.

PRIVATE BY DESIGN
• No account. Sound never leaves your phone.
• Your history is on your phone (and in Android backup, if you use it); only the end-to-end encrypted shared log goes to the connected phones.
• Crash reports only if you turn them on.
• Nothing from your baby's log is passed to ads.

FREE AND PREMIUM
Listening, every alarm profile, the log and the full history are free, with no time limits. The free version shows banner ads (never on the listening or alarm screens) and at most one full-screen ad a day, in the morning after you stop listening. Premium is a one-time purchase, not a subscription: no ads, 30- and 90-day statistics, and short cry clips (optional, on your phone).

HONEST LIMITS
• The alarm rings only on the phone that is listening; Crybell does not send alerts to other phones.
• Put the phone on a stable, firm, uncovered surface. Keep it and the whole charger cable at least 1 m from the cot and out of your baby's reach, never in a bed or under bedding.
• White noise or a TV makes detection weaker; Crybell tells you when the background is loud.
• Do Not Disturb set to total silence blocks the alarm.
• If you force-stop the app, nothing can warn you.
• Deaf or hard-of-hearing parents need a smartwatch that shows phone notifications with vibration.

This app only listens for crying. It does not detect breathing problems and does not reduce the risk of SIDS. Follow safe-sleep practices.

This app is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Always consult a healthcare professional for medical advice, diagnosis, or treatment.

Requirements: Android 10+, microphone.
Contact, including security reports: crybell.app@outlook.com