Caliph: App Block, ToDo, Focus
Antidote for distracted genius
Only for iPhone
Free · In‑App Purchases
iPhone
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 and use Spaces 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 account on iPhone, 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 iPhone
The in-app guide walks you through an Apple Shortcuts automation for each app you want to pause. 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 charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the current period ends. Manage or cancel in your Apple Account settings.
Privacy: https://caliphapp.com/privacy/
Terms: https://caliphapp.com/terms/
Apple standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Support: https://caliphapp.com/support/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update makes Caliph easier to organize and adds more room for the details.
• A refreshed sign-in and account setup experience.
• Clearer Spaces and Lists navigation.
• Reference entries with long notes and custom properties.
• Open attached files and browse imported completed history.
• Offline drafts and conflict choices help keep your edits safe.
The developer, Cubeshell LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Cubeshell LLC
- Size
- 35.3 MB
- Category
- Productivity
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- In-App Purchases
Yes
- Caliph Pro Yearly $47.99
- Caliph Pro Monthly $4.99
- Copyright
- © 2026 Cubeshell LLC