# OnTimer - Never be late — Automatic calendar alarms > Automated calendar alarms and departure time alerts for punctuality. (iPhone/iPad app by Ethan Garr.) - Source: https://appshunter.io/ios/app/ontimer-never-be-late/id6755317601 (this page in markdown: same URL + `.md`) - Developer: [Ethan Garr](https://appshunter.io/developer/1853105438) - Category: Productivity, Utilities - Price: Free with in-app purchases - Rating: 5.00/5 from 16 App Store ratings · 11 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 23 MB - Languages: American English - Released: 2026-03-03 - Data updated: 2026-08-25 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/ontimer-never-be-late/id6755317601/reviews.md ## What is OnTimer? You glance at your calendar reminder, think "I'll join in 5 minutes," then suddenly realize the meeting started 20 minutes ago. OnTimer automatically keeps you on time. Connect your Google, Microsoft, or Apple Calendar once, and OnTimer does the rest. HOW IT WORKS OnTimer uses your existing calendar as the source of truth. When your schedule changes, your alarms automatically stay in sync—so you never have to create or maintain manual alarms. Unlike regular calendar notifications that disappear after a swipe, OnTimer uses persistent alarms that keep reminding you until you dismiss them, helping bridge the gap between noticing a reminder and actually showing up on time. Want a heads-up first? Early Warning gives Pro users a lighter notification before the main alarm, so an important meeting or appointment doesn't sneak up on you. Need more time for one particular event? Adjust its main alarm and Early Warning timing without changing your defaults for everything else. Use OnTimer for: - Meetings and calls - Appointments - Recurring events - Work and personal calendars - Events with locations - Moments when being late costs time, trust, or causes stress APPLE CALENDAR, GOOGLE CALENDAR, AND MICROSOFT CALENDAR - OnTimer supports Apple Calendar, along with Google Calendar and Microsoft Calendar. - Connect one calendar for free, or upgrade to connect multiple calendars across work and personal life. TIME TO LEAVE ALERTS For events with locations, OnTimer helps you know exactly when to leave. Choose your preferred travel mode, add a departure buffer, and let OnTimer monitor traffic so you head out at the right time. - No more guessing when to leave. - No more scrambling when traffic is worse than expected. - Just reliable alerts that help you arrive on time. ESPECIALLY HELPFUL IF YOU: - See calendar reminders and still leave late - Miss meetings even when alerts are turned on - Get focused and lose the final few minutes before a call - Want a heads-up before it's time to stop what you're doing and join a meeting - Need alarms that keep reminding you until you take action - Use more than one calendar - Need help knowing when to join, leave, or switch tasks - Experience time blindness or notification overload FREE VERSION - Connect one Google, Microsoft, or Apple Calendar - Automatic alarms for every calendar event - Persistent, customizable alarms - Recurring event controls - Do Not Disturb controls - See which events support Time to Leave alerts PAID VERSION - Connect multiple Google, Microsoft, and Apple Calendars - Combine work and personal calendars - Early Warning alerts before your main alarm - Customize alarm timing for individual events Business Hours - Time to Leave alerts - Custom travel modes - Departure buffer settings - 7-day free trial on the annual plan OnTimer works quietly in the background, automatically keeping you on time so you never have to think about setting alarms again. Stop relying on calendar reminders that disappear after a swipe. Download OnTimer today and never be late again. Some features require a paid subscription. Monthly and annual subscription options are available in the app. Pricing varies by region and is shown before purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Automatic calendar event alarms - Persistent, non-dismissible notifications - Time to leave alerts with traffic - Customizable transportation modes - Recurring event controls - Do Not Disturb integration ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | OnTimer Pro (Yearly) | $49.99 | per year | | OnTimer Pro (Monthly) | $4.99 | per month | ## Recent user reviews (10 of 11) All indexed reviews: https://appshunter.io/ios/app/ontimer-never-be-late/id6755317601/reviews.md ### 5/5 — The Missing Link Between My AI and My Day *2026-04-15* I use Claude to plan my entire schedule. Meds, training, client calls, wind down, all of it. Claude writes the day to my Google Calendar and that used to be where the system broke, because iOS calendar notifications are useless. Quiet banners you swipe away without looking. I had a perfect schedule sitting in my calendar and still missed half of it. OnTimer fixed it. It reads my calendar and automatically creates a real alarm for every event. Not a notification. A loud alarm that actually cuts through. I don’t build alarms manually. I don’t maintain two systems. Claude writes the plan, OnTimer turns it into sound, and I just live my day. If you searched “Google Calendar to iPhone alarm,” “convert calendar to alarms,” “AI calendar alarm,” “Claude calendar sync,” or “ADHD calendar alarm app,” this is it. The developer is also a real human (I won’t say his name for privacy) who actually cares. Responsive, fast, works the problem with you, ships fixes. Almost extinct in the App Store right now. Setup took two minutes. Loud alarms. Customizable lead time. If you use AI to plan your life and you’re on iPhone, OnTimer is the piece that closes the loop. ### 5/5 — Keeps me on time *2026-04-02* My grandfather always told me that if you’re on time, you’re five minutes late. Ontimer make sure that I’m never on time but rather early and impress my meeting. **Developer response:** Glad you are finding it useful and let us know if we can make it better. ### 5/5 — Keeps me sane *2026-03-20* My coworkers no longer harass me for being late ### 5/5 — Good stuff! *2026-03-19* Simple to use, effective, and fills a niche. Good stuff! **Developer response:** Thanks Whomper! Appreciate that you are getting value from this. Let us know if we can make it better! ### 5/5 — Stay On Time with On Timer *2026-03-19* Simple, elegant, easy to setup and use. Especially like the new time to leave feature. Helps me stay on time all the time! ### 5/5 — Just about perfect! *2026-03-19* OnTimer has completely changed how I stay on top of my day. The seamless integration with Google Calendar makes setting reminders effortless, and everything just works exactly when you need it. It’s simple, reliable, and incredibly helpful—especially for keeping important tasks from slipping through the cracks. A smart, well-designed app I didn’t know I needed but now use every day. Well done! ### 5/5 — Perfect *2026-03-19* Exactly what i needed to keep on time ### 5/5 — Great app for staying on time. *2026-03-14* Super easy to set up and connect to calendars. And the alerts are just in your face and persistent enough so that you won’t be late. The new update has a cool time to leave feature. So if your events have locations you can get an automatic alert based on traffic and distance. Pretty cool. ### 5/5 — As advertised *2026-03-14* This app is great. It has definitely helped me to “never be late.” ### 5/5 — A great app! *2026-03-03* App does exactly what it claims in a simple, quick and elegant way. Especially for someone like me who has multiple meetings and various arrangements across multiple calendars it was a breeze to setup and keep me well organized so I don’t miss anything scheduled. ## Frequently asked questions about OnTimer ### How does OnTimer create alarms for calendar events? OnTimer connects to your Google or Microsoft calendar and automatically generates persistent alarms for each event. These alarms remain visible and audible until dismissed, unlike standard notifications. ### Does OnTimer have ads? No, OnTimer does not contain advertisements. The app is free to use with optional paid features. ### What is the pricing for OnTimer's paid features? Paid features are available through monthly and annual subscription plans. A 7-day free trial is offered on the annual plan. ### Can OnTimer help with in-person meeting travel? Yes, OnTimer offers 'Time to Leave' alerts that calculate your departure time based on real-time traffic and your chosen transportation mode, ensuring you arrive on time. ### What devices does OnTimer support? OnTimer is currently available for iPhone devices. ### How often is OnTimer updated? The latest version, 1.1.2 (35), was released on March 25, 2026, indicating regular updates to improve functionality and reliability. ### What are the benefits of the paid version of OnTimer? The paid version allows connection to multiple calendars (Google and Microsoft), supports multiple accounts, includes business hours filtering, and enables 'Time to Leave' alerts with real-time traffic and customizable travel settings. ### What is the age rating for OnTimer? OnTimer has an age rating of 4+, making it suitable for a wide range of users. ## Version history (last 5 releases) ### 1.2.8 Build 48 - Share Ontimer, Better Cards — 2026-08-21 Get OnTimer's latest so you're never late. Event cards now give you even more control — turn Early Warning on or off for just one event, independent of your default setting, with a cleaner, easier-to-read layout for your Primary Alarm, Early Warning, and Location. We added a Share option on the Settings screen. If OnTimer's helping you stay on time, tell a friend and help spread the word. We also fixed a few issues around event modifications — when you change an event on your calendar, OnTimer now catches up faster and more reliably. Managing your subscription is easier too, with a new self-service screen for changes. And we've added built-in Help & Troubleshooting docs, right from Settings → Help & Support, that we'll keep improving over time. ### 1.2.6 (46) — 2026-08-14 What's New Get a heads-up before it's time to be there. OnTimer's new Early Warning Alarm gives you a lighter notification before your main alarm, so meetings and appointments don't sneak up on you. What's New: • Early Warning Alarm — get a heads-up before your main alarm, with your own lead time • More control for every event — tap any event to see its alarm status, time remaining, Time to Leave details, and more • Customize individual events — change alarm and Early Warning timing for an important event without changing your defaults • Join calls faster — jump directly into supported video meetings from the event details • Performance and stability improvements ### 1.2.4 (44) — 2026-08-08 Never be late again—now with smarter Time to Leave alerts. OnTimer now tells you when you're running late, not just when it's time to leave, so you always know where you stand before your next meeting. What's New: • Smarter Time to Leave alerts — see exactly how late you'll be if you don't leave now • Cleaner calendar management — an easier-to-navigate view of your connected calendars • Faster help — a new long-press shortcut from your iPhone's Home Screen • Friendlier onboarding — preview your alarm sound before you finish setup • Performance and stability improvements ### Version 1.2.2 Build 42 — 2026-07-08 Never be late again—now with Apple Calendar support and even easier onboarding. OnTimer now supports Apple Calendar, so you can connect Google, Microsoft, or Apple Calendar and automatically stay on time. What's new in 1.2.1 - Apple Calendar support - Faster calendar setup - Improved alarm reliability - Performance and stability improvements Never be late again. ### 1.2.1 Build 41 — 2026-07-07 Never be late again—Now with Apple Calendar support. OnTimer now supports Apple Calendar, so you can connect Google, Microsoft, or Apple Calendar and automatically stay on time. What's new in 1.2.1 - Apple Calendar support - Faster calendar setup - Improved alarm reliability - Performance and stability improvements Never be late again. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*