Comparison

Task Zero vs OneTh1ng

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

Head to head
About

Task Zero

This app simplifies task management with intuitive swipe gestures for completion and scheduling. It helps users build habits, manage projects with subtasks, and organize their lives across multiple Apple devices. The core functionality is free, with premium features available via subscription.

Highlights
  • Swipe to complete or schedule tasks
  • Habit building with recurring tasks
  • Project management with subtasks
  • Voice input with Siri
  • Widgets for quick access
  • Cloud sync across Apple devices
  • Customizable tags for organization
Features
Read full description

Get things done with a swipe. Task Zero is the beautifully simple task manager that actually helps you finish your tasks instead of just organizing them. WHY TASK ZERO WORKS Most productivity apps overwhelm you with features you'll never use. Task Zero does the opposite: swipe right to complete, swipe left to schedule. That's it. No learning curve, no decision fatigue, just momentum. Three tabs show you everything: what's scheduled, what needs doing now, and what you've accomplished. Nothing falls through the cracks. BUILD HABITS THAT STICK Create recurring tasks that match real life: Morning routines that repeat every day Weekly review meetings every Monday Workouts Monday through Friday only Anything on any schedule you need MANAGE PROJECTS WITHOUT THE CHAOS Break big tasks into action steps. "Launch website" becomes a checklist: buy domain, design homepage, write copy, test on mobile. Track progress as you go. EVERYWHERE YOU NEED IT Add tasks by voice with Siri while driving. Check your watch during meetings. Use widgets to see what's next without unlocking your phone. Cloud sync keeps everything current on iPhone, iPad, and Apple Watch. ORGANIZE YOUR WAY Create tags for work, home, errands, urgent, someday, just whatever makes sense to you. Filter instantly to see only what matters right now. WHO USES TASK ZERO People tired of complicated productivity systems. Students juggling classes and deadlines. Freelancers managing client work. Parents coordinating family schedules. Anyone who wants to spend less time organizing and more time doing. FREE TO START The core app is free forever. Premium unlocks recurring tasks, subtasks, and unlimited tags for $2.99/month or $10.95/year. WHAT MAKES IT DIFFERENT Your data stays yours—export anytime. Native iOS design that feels fast and familiar. Built by someone who actually uses it daily. Email us at taskzero@simplecore.org to get involved in the development process! THE BOTTOM LINE Download Task Zero if you want to actually complete your to-do list instead of just maintaining it. Join us in getting things done. Terms of Use: https://taskzero.simplecore.org/terms.html Apple EULA (End-User License Agreement): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

OneTh1ng

This app enforces focus by allowing only one task at a time. Attempting to add a new task will delete the existing one permanently. Tasks are automatically deleted if neglected for too long, encouraging completion.

Highlights
  • Single task focus
  • Permanent task deletion
  • Automatic task removal
  • Consequence-driven productivity
  • Simple interface
Features
Read full description

You don't need another todo list. You need consequences. OneTh1ng only lets you have one task. Try to add another? The first one dies. Forever. No undo. No mercy. Just a graveyard of your abandoned intentions. Leave a task too long? It decays. Neglect it for a week? Auto-deleted. Cause of death: you. Simple. Brutal. Effective.

Screenshots

Task Zero4 screens
OneTh1ng4 screens

Verdict

The call

The clearest difference is in-app purchases: OneTh1ng at none against Task Zero's 2. OneTh1ng also leads on iOS requirement (15.1 vs 17.6). On price, review sentiment, ads 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

Both are free to download. Task Zero sells 2 in-app purchases, starting at $2.99 per month. OneTh1ng asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Task Zero versus OneTh1ng: the parameters behind the verdict, then further details
ParameterTask ZeroOneTh1ng
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 2 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS17.615.1 — better
Further details — not scored
Size22 MB26 MB
Age rating4+9+
DeveloperSimpleCoreFranci Penov

Customer experience

Task Zero

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

OneTh1ng

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Task Zero

Subscriptions2
  • Premium Monthly7 Days trial$2.991 Month
  • Premium Annual7 Days trial$10.951 Year
None

OneTh1ng

No in-app purchases

Questions

Is Task Zero free?
Task Zero is free to download, with in-app purchases available.
Is OneTh1ng free?
OneTh1ng is free to download, with no in-app purchases.
Do Task Zero or OneTh1ng have ads?
Neither Task Zero nor OneTh1ng shows ads.

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