Ask about your days with private, verified answers—plus improved filters, new OS 27 portrait widgets, and richer Shortcuts and system actions.
Track what matters. Understand what changed.
Sum of Days is a private life tracker for habits, health, mood, symptoms, personal numbers, notes, and everyday routines. Record in seconds, see your history across days and years, and turn it into a clear review with every finding linked to the days behind it.
A TRACKER THAT GIVES SOMETHING BACK
Review compares the current week, month, or year with the previous period. See meaningful value changes, shifts in how often you recorded, standout days, and items that moved together. The analysis happens on your device, and you can open the exact dates behind each finding. Monthly Rewind turns up to three verified findings into a one-page visual summary of your last 30 days.
TRACK LIFE YOUR WAY
• Record numbers, daily totals, habits, statuses, short text, and longer notes
• Create custom items with your own name, icon, color, unit, range, goal, and schedule
• Add entries quickly from the app, widgets, Shortcuts, and Spotlight. On iPhone, also use Control Center, the Lock Screen, or the Action button
• Set flexible reminders and keep key trackers on your Home Screen with widgets
• Connect supported Apple Health data, including steps, weight, height, exercise time, walking and running distance, active energy, stand hours, and sleep
SEE THE SAME HISTORY FOUR WAYS
• Day gives you a focused daily dashboard
• Month reveals what happened across the calendar
• Timeline lets you scan complete days without hiding the details
• Year turns hundreds of entries into a readable life map
UNDERSTAND EACH ITEM
Open Item Lens to see a full year at a glance, then switch between Line, Bar, Calendar, and All-Time views. See totals, averages, latest values, and patterns without losing the records behind them.
MADE FOR THE APPLE ECOSYSTEM
Use Sum of Days on iPhone, iPad, Mac, and Apple Watch. Add and review data wherever it is most convenient, use widgets for quick access, and sync records across devices with your private iCloud storage.
PRIVATE BY DESIGN
No Sum of Days account is required. Your tracked values stay on your devices and in your private iCloud storage when sync is enabled. Review, Monthly Rewind, and Year insights are generated on device. Entry notes and days based only on Apple Health imports stay out of Spotlight unless you opt in.
SUM OF DAYS+
Use the core tracker for free. Sum of Days+ unlocks unlimited items, more icons and colors, custom ranges and goals, and app locking with Face ID or Touch ID. Choose monthly, yearly, or lifetime access.
Subscriptions are billed through your Apple Account and renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel subscriptions in App Store account settings.
Record what matters. Review what changed. See the sum of your days.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ask questions about your days with Ask AI.
Ask AI uses verified facts from your records to answer questions about item values, dates, averages, totals, recording frequency, meaningful changes, standout days, and items that moved together. Each response leads with the answer and links back to supporting days.
Your records stay on device. On supported devices, Apple's on-device model explains those verified facts; otherwise, Ask AI presents the matching facts directly.
Also new:
• Filter Month, Timeline, and Year by one or more items; your selection carries across all three views
• Today and Item widgets support OS 27's new extra-large portrait size, and calendar widgets use their space more effectively
• Richer App Intents on OS 27 help compatible system experiences understand and open items, days, Review, and Monthly Rewind; Shortcuts can also complete habits, compare items using Review's evidence rules, explain findings, and check Today Status
• Command-1 through Command-7 opens Today, Month, Timeline, Year, Ask AI, Monthly Rewind, and Review on Mac and iPad
Version 2.6.3
The developer, haha Interactive, 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 Not Linked to You
The following data may be collected but it is not linked to your identity:
Purchases
Location
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More