Comparison

Underload vs Master One

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

Head to head
About

Underload

This productivity app helps you focus by displaying only one task at a time from your to-do list. It syncs seamlessly with Apple Reminders, allowing you to manage tasks across all your devices and use familiar voice commands and shortcuts.

Highlights
  • Single task display
  • Syncs with Apple Reminders
  • Cross-device synchronization
  • Supports Siri and Shortcuts
  • Linear task progression
Features
Read full description

It's all in the title. Do you ever feel overwhelmed by the sheer number of tasks on your to-do list? Adding all your tasks only to be faced with a seemingly endless list can make it hard to get anything done. That's why I created Underload, a to-do list app for iPhone, iPad, and Mac that only shows you one task at a time. You can add all your tasks, but you'll only see the next one you need to tackle. You get a clear, linear path forward, a singular focus. Best part is, it two-way syncs with Apple Reminders, so your tasks sync across all your devices and you can keep using Siri, HomePod, Shortcuts, and whatever other integrations you're used to to manage tasks. Privacy Policy: https://www.underload.app/privacypolicy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Master One

This app guides you in building habits by focusing on one at a time. You can set custom durations, track your progress and streaks, and review your completed habits. It offers a clean, distraction-free interface with options to archive or restart habits.

Highlights
  • One habit focus
  • Custom habit durations
  • Streak and history tracking
  • Mastered habits archive
  • Minimalist design
  • Archive and restart habits
  • Strict mode for perfect streaks
Read full description

Master One helps you focus on building habits one at a time. Set your own duration, track streaks, update your progress, and celebrate every success. Features: ◆ One Habit at a Time: Simplify your focus for better results. ◆ Custom Durations: Choose how long to work on each habit. ◆ Streak & History Tracking: Monitor progress, edit past entries, and stay on track. ◆ Mastered Habits: Reflect on your growth with a list of completed habits. ◆ Clean, Minimal Design: Beautiful, simple, and distraction-free. ◆ Archive & Restart – Pause habits anytime and pick them up later. ◆ Strict Mode – Only count progress with perfect streaks—no gaps allowed. ◆ Themes – Personalize your experience with different styles.

Screenshots

Underload3 screens
Master One4 screens

Verdict

The call

The clearest difference is price: Master One at Free against Underload's $4.99. Underload's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, ratings volume, update cadence 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

Master One is free to download; Underload costs $4.99 up front. Master One sells 1 one-off in-app purchase. Underload asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Underload against 5.0 for Master One. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Underload ships an update monthly, Master One every 2 months. The most recent releases landed on September 26, 2026 and October 10, 2026 respectively.

Scorecard5 real differences · 5 level
Underload versus Master One: the parameters behind the verdict, then further details
ParameterUnderloadMaster One
Price$4.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings11
Update frequencyMonthly — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS17.016.6 — better
Further details — not scored
Size2 MB3 MB
Age rating4+4+
DeveloperAnuradha VellineniMary Ogawa

Customer experience

Underload

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Master One

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

In-app purchases

None

Underload

No in-app purchases

1 purchases

Master One

One-time1
  • LIFE_PURCHASE$0.99

Questions

Is Underload free?
Underload costs $4.99, with no in-app purchases.
Is Master One free?
Master One is free to download, with in-app purchases available.
Which has better reviews, Underload or Master One?
Underload and Master One are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Underload or Master One have ads?
Master One shows ads; Underload does not.
Which is updated more often, Underload or Master One?
Underload ships an update monthly, and Master One every 2 months. Most recently, Underload was updated on September 26, 2026 and Master One on October 10, 2026.

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