Comparison

SessionTRAC vs Doo

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SessionTRAC

This app provides a visual representation of time elapsed and remaining, similar to an hourglass. It's designed for various timed activities, offering clear visual cues for pacing and management. Ideal for presentations, classes, or children's activities.

Highlights
  • Visual time elapsed and remaining
  • Adjustable brightness
  • Silent mode alarm
  • End-of-session notifications
  • Color-blind mode
  • Multiple graphical themes
  • Programmable schedule mode
Features
Read full description

SessionTRAC: Your Ultimate Graphical Timer SessionTRAC is a graphical timer app that transforms time management into a visual experience. Unlike traditional clocks, it offers a dynamic representation of time lapsed and time remaining, akin to watching an hourglass. With a quick glance, users can easily see the percentage of time left, making it perfect for pacing presentations, speeches, classes, massages, or any scheduled activity. Ideal for teachers, presenters, managers, doctors, and even children, SessionTRAC ensures effective time use across various tasks. Children can easily understand how much time is remaining for activities like naps or other timed sessions. Key Features Compatibility: Designed for iPhone, iPad, and Apple Watch User-Friendly: Intuitive and easy to use Brightness Control: Adjustable for use in dark environments Alarm Options: Includes silent mode Notifications: Alerts you when a session ends, even if the app isn’t running Accessibility: Red/green color options and color-blind mode (black/white) Graphical Themes: Choose from bright, modern, and gothic themes Language Support: Available in English, Spanish, French, Chinese, and Japanese Simple Timer Mode: Quick setup with minimal effort Programmable Schedule Mode: Ideal for recurring sessions Playback Controls: Fast-forward, reverse, pause/play, and reset Experience a new way to manage your time with SessionTRAC.

About

Doo

This app helps you overcome procrastination by breaking down tasks into manageable digital cards. Its unique card-based interface and focus on one task at a time promote productivity and habit building. It offers various task types, scheduling options, and cross-device syncing.

Highlights
  • Card-based task interface
  • Customizable task groups
  • Open-ended, calendar, and location-based tasks
  • Share extension for creating tasks from other apps
  • Customizable task scheduling and alerts
  • iCloud sync across devices
  • Task collaboration
Features
Read full description

Become a more productive you, one card at a time. WHY DOO? It’s easy to procrastinate your to-do list without a clear first step. Tasks with large goals can feel impossible to finish. Doo helps you procrastinate less. Your reminders become cards that are easy to start and easy to finish. The streamlined edit screen encourages you to create tasks that can fit on a digital index card. Each card shows up in a stack — instead of a list — so you can focus on one thing at a time. BUILD BETTER HABITS Pick a few tasks each day and snooze the rest. Doo helps you create more consistent, sustainable habits. Reduce your anxiety and become a more productive you, one card at a time. *** 2021 Webby Award Nominee *** Best App - Work & Productivity *** 2021 Webby Award Honoree *** Best App User Interface REVIEWS “I absolutely love this app... *incredibly* satisfying...” – Doo 2 Review, Buzzfeed “There’s just enough guilt involved in hitting snooze that I often just complete the task. That’s the point." – WIRED “Doo is a beautiful way to get things done without stressing yourself out.” – Doo 2 Review, The Next Web FEATURE HIGHLIGHTS • Be more productive with a unique, card-based interface • Separate cards into custom groups • Create open-ended, calendar, or location-based tasks • Create tasks within other apps with the share extension • Schedule tasks with custom intervals and alerts • Sync with iCloud across iOS and Mac devices • Collaborate on tasks with other Doo users (requires iCloud) • Support for VoiceOver, Dynamic Text, and keyboard shortcuts • Stay on task with Home Screen & Lock Screen widgets • Complete or snooze tasks from notifications • Drag and drop text, locations, and URLs to create tasks • Screen lock with FaceID, TouchID, or passphrase • Create and complete reminders with Siri • Multitask with Split View and Slide Over

Screenshots

SessionTRAC4 screens
Doo4 screens

Verdict

The call

The clearest difference is rating: SessionTRAC at 5.0 against Doo's 4.4. SessionTRAC also leads on price ($3.99 vs $4.99). Doo's advantage is update cadence (every 2 weeks vs every 22 months) and ratings volume (39 vs 1). On ads, in-app purchases, monetization model and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

SessionTRAC costs $3.99 and Doo $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SessionTRAC holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Doo has 39 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

SessionTRAC ships an update every 22 months, Doo every 2 weeks. The most recent releases landed on June 24, 2026 and September 11, 2026 respectively.

Scorecard5 real differences · 6 level
SessionTRAC versus Doo: the parameters behind the verdict, then further details
ParameterSessionTRACDoo
Price$3.99 — better$4.99
Rating5.0 (1 ratings) — better4.4 (39 ratings)
Positive reviews—55.2% of reviews
Number of ratings139 — better
Update frequencyEvery 22 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#192 — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Apple Watch
Requires iOS16.0 — better17.6
Further details — not scored
Size34 MB17 MB
Age rating4+4+
DeveloperGary HuckellCiarlo Software, LLC

Customer experience

SessionTRAC

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Doo

All ratings39 ratings
Positive82.1%
Neutral10.3%
Negative7.7%
Written reviews29 reviews
Positive55.2%
Neutral24.1%
Negative20.7%

In-app purchases

None

SessionTRAC

No in-app purchases

None

Doo

No in-app purchases

Questions

Is SessionTRAC free?
SessionTRAC costs $3.99, with no in-app purchases.
Is Doo free?
Doo costs $4.99, with no in-app purchases.
Which has better reviews, SessionTRAC or Doo?
SessionTRAC is rated higher. SessionTRAC averages 5.0 out of 5 from 1 ratings, while Doo averages 4.4 from 39 ratings.
Do SessionTRAC or Doo have ads?
Neither SessionTRAC nor Doo shows ads.
Which is updated more often, SessionTRAC or Doo?
SessionTRAC ships an update every 22 months, and Doo every 2 weeks. Most recently, SessionTRAC was updated on June 24, 2026 and Doo on September 11, 2026.

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