Comparison

Task Master vs Decima

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

Head to head
About

Task Master

Organize your day with a to-do list and integrated timer. Input your deadline, tasks, and estimated times to track your progress and identify free time. Archive tasks for later use and monitor your schedule with convenient home and lock screen widgets.

Highlights
  • Deadline-based task scheduling
  • Task progress tracking
  • Time estimation for tasks
  • Task archiving
  • Home and Lock Screen widgets
  • Free time calculation
Features
Read full description

Task Master combines a to-do list and a timer. First, input the time when you want all of your tasks done by. Next, input all of your tasks and how long you think each will take. Then, Task Master uses the current time to calculate how far ahead or behind you are. You can also save tasks for another day by archiving them. Use the Home Screen and Lock Screen widgets to keep track of your tasks without having to open the app! This app is great for figuring out how much free time you have and helps you schedule your day so you can get everything done.

About

Decima

Features
Read full description

The application you have before you is but a small attempt at working with time. Since it's a precious commodity all we can do is spend it wisely. That's why I've decided to spend a bit of my time and create Decima (named after Roman Parca, the female personification of destiny) so that you don't have to ;) So what you can do with Decima? In the current version 1.1 (Joséphine) you can: • create multiple timers • set multiple alerts per timer to track time expenditure • use it on both: your iPhone and Apple Watch (iPhone application is necessary) • start/stop timers on demand from your iPhone/iPad or Apple Watch • organize your time in sets • see total/partial time spent for a particular timer • automatically synchronise data between your iPhone and your Apple Watch (timer started on your phone can be paused on your Apple Watch and vice-versa) Have fun. Catch me at krzyspmac@twitter or contact (at) krzysp.net

Screenshots

Task Master4 screens
Decima4 screens

Verdict

The call

The clearest difference is in-app purchases: Task Master at none against Decima's 1. Decima's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement 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

Both are free to download. Decima sells 1 one-off in-app purchase. Task Master asks for nothing beyond the download.

UpkeepUpdate frequency

Task Master ships an update monthly, Decima every 2 months. The most recent releases landed on October 8, 2026 and September 25, 2026 respectively.

Scorecard2 real differences · 8 level
Task Master versus Decima: the parameters behind the verdict, then further details
ParameterTask MasterDecima
PriceFreeFree
Rating5.0 (6 ratings) — better—
Positive reviews72.7% of reviews—
Number of ratings6 — better—
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS16.0 — better17.0
Further details — not scored
Size21 MB12 MB
Age rating4+4+
DeveloperNolan MathewsKrzysztof Pawlowski

In-app purchases

None

Task Master

No in-app purchases

1 purchases

Decima

One-time1
  • The Manipulator$0.99

Questions

Is Task Master free?
Task Master is free to download, with no in-app purchases.
Is Decima free?
Decima is free to download, with in-app purchases available.
Do Task Master or Decima have ads?
Neither Task Master nor Decima shows ads.
Which is updated more often, Task Master or Decima?
Task Master ships an update monthly, and Decima every 2 months. Most recently, Task Master was updated on October 8, 2026 and Decima on September 25, 2026.

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