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About this app
Oops, I'm Late! tells you when you're going to be late to a calendar appointment and gets a "running late" message ready for the right people. The app watches your calendar, tracks your GPS in the background, and calculates a live ETA (traffic-aware with Pro). When you're late, a full-screen countdown appears. One tap prepares "I'm running about 8 minutes late, on my way" for everyone who needs to know. Nothing is sent until you confirm. HOW IT WORKS • Start your trip — the app finds your next calendar appointment automatically • Your ETA is recalculated every few seconds from live GPS, plus live traffic with Pro • Late detection keeps working in the background (best-effort on iOS — the system schedules periodic checks) • A dramatic full-screen alert fires when you're projected to be late • Tap Send Now — or let the countdown finish — and your messaging app opens with the message ready; you tap Send yourself • Optional arrival confirmation prepares "I've arrived" when you reach your destination BUILT FOR DRIVING • Hands-free voice mode: your ETA is read aloud; reply with your voice • CarPlay support for glanceable ETA on your dashboard (Pro) • Apple Watch countdown so you can check without picking up your phone • Haptic feedback ramps up in urgency as the deadline closes in SMART ETA ENGINE A calibrated IMM-Kalman filter smooths GPS noise and produces a real-time ETA with a confidence range. Pro subscribers also get traffic-aware ETA from live road conditions. PRIVACY • Your calendar and contacts stay on your device • Your location stays on your device. The one exception is traffic-aware ETA (Pro), which sends rounded coordinates to our routing service. Optional crash reports go to our error-reporting provider. Both can be turned off in Settings • Messages are composed and sent from your own phone through your messaging app; our servers never see message text or recipient details • Export or delete your data from Settings > Privacy SUBSCRIPTIONS Oops, I'm Late! is free to use with up to 3 saved destinations and 1 contact group. • Basic: unlimited destinations and contact groups, series templates for recurring meetings, and punctuality insights • Pro: everything in Basic, plus traffic-aware ETA and CarPlay Both are available monthly or yearly, with a 7-day free trial on your first subscription. Prices are shown in the app before you buy and may vary by region. Payment is charged to your Apple ID account at confirmation of purchase, or when the free trial ends. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel at any time in your Apple ID subscription settings. Privacy: https://oopsimlate.com/privacy Terms: https://oopsimlate.com/terms
What's new
Version 2.0.0 · Oct 23, 2026
• Late detection now continues in the background (best-effort on iOS, via system-scheduled checks) • Traffic-aware ETA now available for Pro subscribers • New hands-free voice mode: hear your ETA and prepare late messages without touching the screen • Apple Watch glanceable countdown • Improved IMM-Kalman ETA engine with stop-and-go traffic detection • Arrival confirmation: optional "I've arrived" message ready when you reach your destination • Battery saver mode for longer trips • Export or delete your data from Settings • Bug fixes and performance improvements
In-app purchases
The most popular purchases on the App Store.
- Basic MonthlySubscription · 7 days free trial$3.99 / month
- Basic YearlySubscription · 7 days free trial$35.99 / year
- Pro MonthlySubscription · 7 days free trial$7.99 / month
- Pro YearlySubscription · 7 days free trial$79.99 / year