Sum: Study Timer & Tracker

Sum: Study Timer & Tracker

Pomodoro, calendar, graphs

2 ratings
2 reviews
Free
In-App Purchases

Details

Released
April 3, 2026
Updated
November 6, 2026

Features

Sum: Study Timer & Tracker screenshot #1 for iPhone
Sum: Study Timer & Tracker screenshot #2 for iPhone
Sum: Study Timer & Tracker screenshot #3 for iPhone
Sum: Study Timer & Tracker screenshot #4 for iPhone
Sum: Study Timer & Tracker screenshot #5 for iPhone
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About

Track and manage your study time by subject with a simple timer. Log sessions, add notes, and visualize your progress with weekly graphs and a calendar. Focus on learning without distractions.

✓Study time tracking
✓Subject and material logging
✓Weekly progress graphs
✓Calendar visualization
✓Study streaks
✓Pomodoro timer
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What's New in Sum

1.5

November 6, 2026

【App Name and Icon Updated】 We've changed the app name from "Stackd" to "Sum" and introduced a new app icon. All your existing records and settings will remain unchanged. 【Search Feature Added】 You can now search your history by subject, study material, or notes. We've also added subject filtering and the ability to switch months by swiping the calendar. We've improved performance and made several minor fixes.

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Subscriptions & In-App Purchases

$1.99

Stackd Pro

One-time purchase. Unlock all features permanently.

User reviews

Nice and easy

The app is exactly what I wanted! I’d like the duration buttons to keep a running total with each click. For example, clicking the 15-minute button three times should add up to 45 minutes.

Response from developer

Thank you so much for your kind words! I'm really glad the app is just what you were looking for! Thank you for the suggestion about adding up the time with each button tap, too! I'll keep this in mind as I consider future improvements. Thanks again for your support!

LOVE THIS APP

I just got this app today to track my study times in college and it’s perfectttt. It makes my life easy, super cute interface and it’s not overwhelming to navigate. I just love an app that makes my life easier. My one ask tho is to include an option to set weekly hour goals for each subject in addition to the weekly goal. I hope that makes sense. You ate with this app!!!!!!!!
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Response from developer

Thank you so much for your lovely feedback! I'm really happy to hear that you're enjoying the app and finding it helpful for your studies! Thank you also for the great suggestion! Adding weekly hour goals for individual subjects is something I'm currently considering, and I really appreciate you bringing this up! Thank you again for your support. It means a lot!

Developer apps

FAQ

What is Sum's learning methodology?

Sum focuses on self-directed learning by allowing users to track their study time by subject and material. It provides visual feedback through graphs and calendars to help users understand their study habits and balance.

How does Sum track progress?

Sum tracks progress through weekly graphs that show subject balance and a calendar that visualizes study days with color-coding. It also displays consecutive study days (streaks) to encourage consistent learning.

Does Sum offer certifications?

Sum itself does not offer certifications. It is designed to help users manage their study time effectively for various goals, including preparing for certifications.

What are the benefits of the Stackd Pro upgrade?

Stackd Pro, a one-time purchase, unlocks monthly and cumulative graphs, goal setting with achievement rates, 9 color themes, and home screen/lock screen widgets for real-time timer display.

Is Sum available on Android devices?

Based on the provided data, Sum is currently supported on iPhones. Information regarding Android compatibility is not available.

How often is Sum updated?

The latest version of Sum is 1.5, last updated on November 6, 2026. This indicates recent development activity, suggesting regular updates.

Does Sum have ads?

No, Sum does not contain advertisements. The description explicitly states 'No ads' and emphasizes privacy by not requiring account registration.

What is the age rating for Sum?

Sum has an age rating of 4+, making it suitable for a wide range of users, including younger learners.