Personal productivity and notes
Personal reminder and nudge apps
Apps that send reminders through notifications, SMS, calls or email, often with escalation, voice or photo proof, plus keep-in-touch nudges for friends, family and birthdays.
Built for: Forgetful individuals and busy families
Projects since May 04
174
Different builders
172
Last 4 weeks vs 8 before
+24%
AI is the core
14%
Projects per week
Mostly mobile app (63%), web app (20%), desktop app (5.7%) · from r/SideProject, r/IMadeThis, r/ShowYourApp, r/vibecoding
Latest
- Tracks when you last did recurring tasks and reminds you when they are due again.“I built a simple app to remember when you last did recurring stuff — looking for a few testers”
- Family SOS — Shares family members' locations on request and sends SOS emergency alerts to contacts.“[Apps] Family SOS — Location & Emergency Safety”
- ActionBox — Sorts Android notifications into urgency categories and learns from user corrections.“I built an app that sorts notifications by urgency”
- Sanctia — Sends pre-written messages, letters, voice notes and photos to chosen people if the user stops responding to periodic check-ins.“What makes flying scary to so many, when planes are statistically the safest way to travel? It made me build this.”
- Spher — Sends a safety alert to a whole group of trusted contacts at once when the user triggers it.“I tense up every time someone walks past me at night, so I built an app that notifies my whole circle at once, not just one person”
- Keepwell — Stores personal details about contacts such as birthdays, gift ideas, allergies and preferences, with reminders and a stay-in-touch prompt.“I built a local-first iOS app for remembering the important things about the people in your life”
- Looply: Predictive Reminders — Logs recurring real-life events with history and estimates when each one will need attention again.“Looply: Predictive Reminders - simple app for recurring real-life things — pets, clients, vehicles and more”
- Renotify — Saves incoming notifications captured through the iOS Shortcuts automation so they can be browsed and searched later.“iPhone never had notification history. iOS 27 changed that, so I built an app (free, on-device)”
- Bellringer — Sends configurable alarms before calendar meetings, with rules for optional meetings and defaults for newly added ones.“IOS App: Got Tired of looking at calendar every minute for meetings”
- Set a Reminder — Creates voice or text reminders on a PC that sync to Google Calendar and can open links, videos, or music at scheduled times.“I created my first extension over six months ago and here are the results”
- Birthday Reminder — Stores friends' birthdays locally on the device and sends reminders, with names and dates imported from a screenshot via on-device OCR.“I was tired of birthday apps harvesting my contacts, so I built an offline-first , free reminder app on iOS and Android”
- Erinnerung: Verträge kündigen — Speichert Verträge und Kündigungstermine und erinnert rechtzeitig vor Ablauf der Kündigungsfrist.“Ich habe eine App entwickelt, die an Kündigungsfristen erinnert”
- Scans paper or digital documents, extracts dates, deadlines and action items, and sends reminders before they pass.“Built an app that scans your paperwork pile and extracts deadlines automatically — looking for ADHD parents to chat with”
- Notily — Collects Android notifications into a searchable history presented as chat conversations, with reminders, silencing and bookmarks.“Notily: a Beautiful Notification History!”
- Notification History Manager — Stores Android notifications, including dismissed ones, and lets users search them and trigger automated actions based on rules.“I built an Android app that remembers your notifications, now 1,000+ installs and 30+ paid users”
- Touchbase+ — Sends a text to a chosen contact if the user misses their daily check-in tap for four hours.“I asked r/UniUK if their parents track them. 143k views, 397 comments, and it mostly killed my positioning.”
- Mindkeep: Expiry Reminders — Scans photos or screenshots of documents on-device, detects dates, and schedules reminders before them.“I’m a radiology resident, not a software developer — I just shipped my first iOS app”
- You Should Leave — Times when to leave for appointments, shows a lock screen countdown, and logs when you actually leave.“Made an app to stop myself from being late... works pretty well”
- Just Here — Prompts a daily mood check-in and emails a trusted contact if check-ins stop for longer than a chosen grace period.“I built a daily check-in app for people who live alone — no GPS, optional contact alerts”
- Memory Lane — Helps people with memory loss recognize family through photo and relationship prompts and follow daily routines with simplified reminders.“[Android] Built "Memory Lane" (a free app for memory loss / dementia support). Need testers for Google's 14-day requirement!”
Most discussed
- Daily Brief receipt printer — Generates a personalized morning briefing for each child overnight and prints it on a button-triggered wifi receipt printer.“I made an agentic "Daily Brief" for my kids with a receipt printer. Codex + Claude, 0 hand-written LOC”
- Sends daily check-in reminders to people living alone and alerts their emergency contacts by email or SMS if they do not respond, with a manual SOS button.“I built an app that checks in on people living alone and alerts their family if they don't respond”
- Sends long-range deadline reminders by SMS and email and escalates to a trusted contact if the user does not respond.“What is the best way to get early users?”
- 1Reminder — Sets single-purpose reminders without lists, projects, or categories.“A small app I built for my wife is outperforming my expectations.”
- Renotify — Saves incoming notifications captured through the iOS Shortcuts automation so they can be browsed and searched later.“iPhone never had notification history. iOS 27 changed that, so I built an app (free, on-device)”
- The GiftWise — Sends email reminders before birthdays and occasions and suggests gift ideas based on the recipient's personality and lifestyle.“I'm not a developer, I'm just a working mom in my 40s who kept gifting body lotion — so I learned to build a free smart gift reminders site”
- Atlas — Runs a recurring task described in one sentence on a schedule and emails the result.“Every AI landing page looks the same. Mine did too — here’s how I fixed it.”
- SpotMind — Sends a notification when the phone arrives at a saved location, reminding the user of a task pinned to that place.“I built a location-based reminder app because I kept forgetting things at the grocery store”
- Notification History Manager — Stores Android notifications, including dismissed ones, and lets users search them and trigger automated actions based on rules.“I built an Android app that remembers your notifications, now 1,000+ installs and 30+ paid users”
- Remmyn — Turns free-text sentences into reminders and resurfaces them shortly before they are due.“Building an app that remembers things for you — and yes, I know what you're going to say”