Sum of Days: Life Tracker

Sum of Days: Life Tracker

Habits, Health & Daily Review

15 ratings
20 reviews
Free
In-App Purchases

Details

  • Released
  • Updated

Features

Sum of Days: Life Tracker screenshot #1 for iPhone
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Sum of Days: Life Tracker screenshot #8 for iPhone
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About

Track personal numbers and habits with insightful charts and calendars. Syncs with Apple Health and offers custom habit tracking with notifications. Protect your data with biometric security.

Number tracking (weight, steps, calories)
Custom habit tracking with notifications
Data visualization with charts and calendar
Apple Health and iCloud sync
Add notes to entries
Biometric data protection (Face ID/Touch ID)
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What's New in Sum of Days

2.4.0

August 5, 2026

JustTrack is now Sum of Days. A clearer name for the same app and the same private records. Your data, iCloud sync, purchases, and Sum of Days+ access are unchanged. No migration is needed. • Review meaningful changes across the current and previous week, month, or year, with every finding linked to the days behind it • Move naturally between Day, Month, Timeline, and Year • Use Item Lens to see a full year of any item alongside Line, Bar, and Calendar views • Enjoy refined native navigation across iPhone, iPad, and Mac • Meet a new app icon and visual identity built around the shape of your days • Improved reliability for Apple Health, widgets, Apple Watch, and purchases

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Subscription plans

JustTrack+ Monthly

Monthly Subscription of JT+ Membership

$1.991 Month
How to cancel Sum of Days subscription ⁉️
1

In-App Purchases

$29.99

JustTrack+ Lifetime

Lifetime purchase to unlock everything

Events

Read more about New Calendar View

New Calendar View

Month and vertical day view added!

Jul 5, 2026 Aug 5, 2026

Read more about Widgets Everywhere

Widgets Everywhere

From Lock Screen to Apple Watch, use widgets!

Nov 22, 2023 Dec 21, 2023

User reviews

excellent

simple and intuitive design. syncs well between devices. let's you export your data. reporting is good. it has become a productivity app i use everyday.

Best App to track custom data

I wonder why this app has so few ratings. The freedom to configure every data input type is exactly what I was looking for. Great visualizations also.

Does three things better

There’s a pantload of habit trackers out there. Most of them are pretty mediocre, a few are surprisingly good. JT is lacking in some of the bells and whistles but it does at least three things better than most of the others I’ve tried, and those three things are important to me. First, native iPad support. No wasted real estate. Second, solid sync. Ever have to wait hours for the iPhone to sync with the watch? Yeah, me neither. Third: BIG clear watch display. I need to track the time I take certain meds. Waking up in the wee hours to do so is no fun, and having to fiddle with a phone or iPad makes it worse. JT is the ONLY one I found with a simple, clear display - tap, tap and back to sleep. Free? No, it’s not free. You don’t work for free, why do you expect devs to do it? OTOH, $10/year is much less than many of the competition so what are you waiting for? Give it a try. 3 habits for free.
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Not a free app

And you won’t figure that out until you’ve invested set up time. This app is entirely useless as a free app. It has a good concept and I was getting excited to try it out but then I discovered it only lets you track 3 data points without upgrading to “pro”. Don’t waste your time unless you’re willing to pony up right out of the gate.
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Excellent data logger

One of the best!

Developer apps

FAQ

What kind of numbers can I track with JustTrack?

You can track various numbers like weight, push-up counts, and squat counts. It also allows combining these with health-related information such as steps and calories burned to provide deeper insights.

How does JustTrack help with habit formation?

JustTrack allows you to create custom habits, set their frequency, and track your progress with ease. It provides notifications to help you stay on track and a calendar view to visualize your consistency.

Does JustTrack sync with other health apps?

Yes, JustTrack syncs with Apple Health and iCloud, fetching your existing data to provide a comprehensive view of your progress across devices.

What are the subscription options for JustTrack+?

JustTrack+ offers monthly and annual subscription plans. The annual plan is priced at $9.99 and includes a 7-day free trial.

How can I manage my JustTrack+ subscription?

You can manage your subscriptions and turn off auto-renewal by going to your Account Settings on the App Store after purchase. Payments are charged to your iTunes account at confirmation.

Is my data secure with JustTrack?

Yes, JustTrack offers data protection with Face ID/Touch ID for its premium users (JustTrack+). This ensures your personal tracking data remains private.

How often is JustTrack updated?

The latest version of JustTrack is 1.9.0, and it was last updated on November 5, 2024. Updates typically include new features and performance improvements.

What devices are compatible with JustTrack?

JustTrack is compatible with a wide range of Apple devices, including Mac, Apple Watch, iPhone, iPad, and iPod.