Comparison

Mastery vs DecisionLog

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

Head to head
About

Mastery

Features
Read full description

Mastery helps you build discipline through repetition. Track any skill. Log your practice. Watch yourself improve, one rep at a time. Whether you are learning something new, training your body, refining your craft, or building steady habits, Mastery gives you a simple system to return to daily. Progress is not about perfection. It is about showing up. Key Features: • Track any skill or habit with fast, simple logging • Level system from 1 to 100 to make growth visible • Milestone titles from Initiate to Master • Daily logs with notes to record your practice over time • Clean design built for focus • The Dojo: a daily show-up journal for steady, meaningful growth The Dojo is a daily practice space built around consistency, not streaks. A place to show up, reflect, and anchor your training in real action. Each day offers a simple scene and choice rooted in practice: body, mind, and spirit. Build discipline. Track progress. Stay with the work.

About

DecisionLog

Features
Read full description

DecisionLog helps you think clearly and make better decisions. Write down important decisions, your reasoning, and revisit them later to reflect and improve your thinking over time. Optional reminders help you review past decisions and learn from outcomes. Features: • Log decisions with context and reasoning • Set reminders to reflect later • Unlimited local storage — no accounts, no analytics • All data stays on your device DecisionLog Pro unlocks unlimited decisions and removes ads with a one-time purchase.

Screenshots

Mastery4 screens
DecisionLog3 screens

Verdict

The call

The clearest difference is price: DecisionLog at Free against Mastery's $1.99. DecisionLog also leads on update cadence (every 2 days vs every 9 days). Mastery's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

DecisionLog is free to download; Mastery costs $1.99 up front. DecisionLog sells 1 one-off in-app purchase. Mastery asks for nothing beyond the download.

UpkeepUpdate frequency

Mastery ships an update every 9 days, DecisionLog every 2 days. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

Scorecard5 real differences Ā· 1 level
Mastery versus DecisionLog: the parameters behind the verdict, then further details
ParameterMasteryDecisionLog
Price$1.99Free — better
Update frequencyEvery 9 daysEvery 2 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better18.6
Further details — not scored
Size37 MB6 MB
Age rating4+4+
DeveloperBenny JienDENIS DANIEL NASTIC

In-app purchases

None

Mastery

No in-app purchases

1 purchases

DecisionLog

One-time1
  • DecisionLog Pro$2.99

Questions

Is Mastery free?
Mastery costs $1.99, with no in-app purchases.
Is DecisionLog free?
DecisionLog is free to download, with in-app purchases available.
Do Mastery or DecisionLog have ads?
DecisionLog shows ads; Mastery does not.
Which is updated more often, Mastery or DecisionLog?
Mastery ships an update every 9 days, and DecisionLog every 2 days. Most recently, Mastery was updated on October 9, 2026 and DecisionLog on October 12, 2026.

Other comparisons