Callback Reminder: Missed Call

Never forget to return a missed call again. Callback Reminder detects every missed or rejected call and instantly shows a popup, even on your lock screen. Tap when you want to call back, and you'll get a call back reminder right on time. ⚡ HOW IT WORKS 1. You miss a call or decline one 2. A popup shows who called, with Call back and Message buttons 3. Tap a time: 30 min, 1 hr, 2 hrs, this evening, tomorrow morning, your default, or pick any date and time 4. When it's time, a reminder notification appears with Call, Snooze and Done If you don't pick a time, your default reminder is set automatically. No taps needed. 🧠 SMART, NOT NAGGING • Call back from the app and the reminder clears itself • Already talked to the caller? The reminder is removed, with Undo • One reminder per caller. A repeat missed call updates it instead of adding another • Quiet hours: no popups overnight. Reminders wait until morning 📅 CALENDAR SYNC (OPTIONAL) Works with Google Calendar, Samsung Calendar, Outlook/Exchange and any other calendar on your phone, so your callback reminders show up on all your devices. Or keep reminders on your phone only. Calendar events are marked private and free, so they don't block your schedule. 🔒 RELIABLE ON EVERY PHONE • Lock-screen popup that appears even when your phone is locked • Dual SIM support: monitors calls on both SIMs • Step-by-step setup for Xiaomi, Redmi, POCO, Samsung, OPPO, realme, OnePlus, Vivo and more, so battery savers and Autostart don't stop your missed call alerts • Battery friendly call monitoring • Light and dark theme 🎯 FILTER WHAT MATTERS • Numbers not in your contacts: remind me, ask me, or ignore • Exclusion list: add numbers you never want reminders for 🆓 COMPLETELY FREE No ads. No in-app purchases. No subscriptions. Just a simple tool that works. 🔐 PRIVACY FIRST No call log access and no account needed. Caller details stay on your phone, unless you choose to sync reminders to a calendar account. The app uses Firebase Crashlytics for crash reports. 📲 WHAT THE APP NEEDS • Phone state: to detect missed calls • Contacts: to show the caller's name and spot unknown numbers • Notifications: to remind you when it's time to call back • Display over other apps: to show the popup on your lock screen • Calendar (optional): to save reminders to your calendar Perfect for busy professionals, small businesses, sales teams, doctors, freelancers and parents. Download Callback Reminder and return every missed call on time.