Stamp - Calendar Logger

Stamp - Calendar Logger

Your time, in your calendar.

1 ratings
1 review
Free

Details

  • Released
  • Updated
  • April 21, 2026
  • May 30, 2026

Features

Stamp - Calendar Logger screenshot #1 for iPhone
Stamp - Calendar Logger screenshot #2 for iPhone
Stamp - Calendar Logger screenshot #3 for iPhone
Stamp - Calendar Logger screenshot #4 for iPhone
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About

This app automatically logs your non-meeting activities, like reading or exercise, as calendar events. It offers a one-tap timer for manual logging and integrates with Strava and Whoop for seamless workout and sleep tracking. Your calendar will finally reflect your entire day.

One-tap start/stop timer
Strava integration for workouts
Whoop integration for sleep and recovery
Syncs with Apple, Google, and Outlook Calendar
Customizable activities with names and colors
Live Activity on Lock Screen and Dynamic Island
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What's New in Stamp

1.0.4

May 30, 2026

General improvements

User reviews

Great Niche App

Honestly this app is something I’ve been personally wanting to create, glad to have stumbled upon it on a Reddit post and found out the developer was actually the one who posted. I say it’s niche, because not a lot of people like to track every thing throughout their day, however, I am someone who likes to visually see what I’ve done day in and day out. The best part is I use whoop and it seamlessly syncs with it to update my Google Calendar which is where I post everything on to keep track of what I’ve done. I like to make sure that I’m maximizing my time effectively and knowing where I can remove some fluff/down time and refocus into family, friends, hobbies etc. Honestly if you are someone who likes to also visually keep track of your dad and already have whoop/strava/etc and a calendar and are tired of manually having to log everything in your calendar. Give this app a shot and the best part is it’s free and no ads. The developer is also very very responsive and open to feedback. I had gave some feedback on a feature I thought would be beneficial and within the day he had already implemented it. Great great customer support and excited to see what other unique things come from the app!
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Response from developer

Thank you so much for this. You described exactly the problem I built Stamp to solve, so it means a lot that it's clicking for you. The Whoop + Google Calendar combo is one of my favourite parts of the app too, and I'm glad it's working seamlessly for you. Feedback like yours is what keeps me motivated to keep building, so thank you for sharing it here. More good stuff coming!

Developer apps

FAQ

Does Stamp have ads?

No, Stamp is ad-free. It does not contain advertisements, allowing for an uninterrupted user experience.

What devices does Stamp support?

Stamp is available for iPhone and iPod devices. It is designed to integrate seamlessly with your existing calendar applications on these platforms.

How often is Stamp updated?

The latest version of Stamp was released on May 30, 2026. Updates are provided to ensure the app remains reliable and compatible with the latest operating system versions.

What is the age rating for Stamp?

Stamp has an age rating of 4+. This indicates it is suitable for a wide range of users and does not contain content inappropriate for younger audiences.

Can I export my logged data from Stamp?

While Stamp logs sessions directly to your calendar, it provides a session history for the last 30 days. Direct export formats are not specified, but all logged data is visible in your connected calendar.

How does Stamp handle offline use?

Stamp works offline. Any sessions started while offline will be automatically synced to your calendar once you reconnect to the internet.

What makes Stamp different from a habit tracker?

Stamp is explicitly not a habit tracker. It focuses solely on logging the duration of activities as calendar events, without features like streaks, check-ins, or badges.

What calendar services does Stamp integrate with?

Stamp connects with Apple Calendar, Google Calendar, and Outlook Calendar. This ensures your logged activities are visible within your primary calendar application.