Caliph: App Block, ToDo, Focus

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Everyone
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About this app

You remember to open Instagram. You don't always remember to check your to-do list.

Caliph connects the two. When you open an app you've chosen, Caliph brings up your own tasks. That familiar habit becomes a reminder of what you meant to get done.

Your plans, back in view
Write down the things you want to do. When Caliph appears, they're right there: the assignment to finish, the person to call, the book to get back to.

The short pause gives you a moment to look. Choose a task and start a focus session, or choose Stay in Caliph. If you still want to use the app, wait for Open app and carry on.

A place to make a start
- Add notes and subtasks so you know where to start.
- Put tasks in Lists to keep different parts of your day together.
- Start a focus timer from a task and look back at your saved sessions.
- Use the same Caliph account on your phone, the web and the Caliph Chrome extension.

Your tools can add to the list, too
Caliph Pro includes REST API access. Use your own scripts and tools to create and update tasks and Lists with your Caliph API key.

Setting up on Android
In Pauses, read the app-opening disclosure, enable Caliph app reminders in Android Accessibility settings and choose your apps. Caliph uses AccessibilityService to recognise when a chosen app opens and show your task reminder. App-opening detection stays on your phone. Caliph does not read screen text or other app content, or tap or control other apps. You can turn off access at any time and keep using your tasks. Phone apps and Chrome websites are set up separately.

Choosing Open app gives you a temporary allowance to reopen that app. Once it ends, the next opening brings your task reminder back. Caliph doesn't cut off a session while you're using the app.

The thinking behind it
Caliph brings together ideas studied in behavioral research: goal reminders, a short delay and a chance to change your mind. Your own tasks give that moment a purpose, with a focus timer ready when you choose one. Caliph itself has not been tested in a controlled effectiveness study.

Research:
https://arxiv.org/abs/2001.04180
https://pubmed.ncbi.nlm.nih.gov/36795756/

Free, with optional Pro
Caliph is free to download and use. Optional Caliph Pro subscriptions renew monthly or yearly. The app shows the current price and included features before you subscribe. Payment is handled by Google Play. Subscriptions renew automatically unless cancelled. Manage or cancel in Google Play subscriptions using the Google Account that bought Pro. Uninstalling Caliph does not cancel your subscription.

Privacy: https://caliphapp.com/privacy/
Terms: https://caliphapp.com/terms/
Support: https://caliphapp.com/support/
Antidote for distracted genius
Updated on
Oct 15, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Location, Personal info and 4 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Welcome to Caliph.

Turn the apps you open out of habit into reminders of what you meant to do. Add tasks and Lists, choose apps to pause, and start a focus timer from your next task.
Content rating
Everyone
In-App Purchases
Learn more

App support

About the developer
Cubeshell LLC
suleman@cubeshell.com
1309 Coffeen Ave Ste 1200 Sheridan, WY 82801-5777 United States
+1 307-201-3171