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Task managers you buy once.

Buy Things 3. It is the one most people keep using, and it costs less than the apps that charge every month for the same job. Due is the pick if your problem is ignoring reminders rather than writing them down — it repeats until you act. Paperless is for reusable checklists, gTasks Pro only makes sense if your tasks live in Google Tasks, and 2Do Legacy is here as a warning rather than a recommendation.

The filter. Every app here is a single purchase. None of them can start charging you monthly for what you already bought. See every app under this rule ›
Top pick

Things 3

Cultured Code GmbH & Co. KG
View on the App Store ›
$9.99 once4.8★ (28,033)Updated Oct 22, 2026
Verdict
Things 3 stands out on this page for polish, not just pricing: reviewers consistently praise its intuitive design and say it beats other task managers they've tried, including for ADHD-driven workflows. A few report occasional reminder glitches or crashes, but the dominant signal is a well-built, thought-out app.
Best for
Someone who has bounced between cluttered to-do apps and wants a single clean, intuitive task manager without recurring fees eating into their workflow.
The catch
There's no data export, so if Things doesn't work out for you, you're locked into its format with no easy way to move your tasks elsewhere.
One-time purchaseNo subscriptioniCloud syncPlans your day

Due - Reminders & Timers

Due Apps LLP
View on the App Store ›
$7.99 once4.7★ (2,821)Updated Oct 25, 2026
Verdict
Due's whole pitch is persistent, repeating reminders that nag until you deal with them, and that's what most reviewers actually praise it for. Sync between iPhone, iPad and Watch is the recurring weak spot, with several reviewers reporting reminders or completions not syncing across devices.
Best for
Someone who forgets one-off reminders unless they're repeatedly nagged until acknowledged, using it mainly on a single device rather than across iPhone, iPad and Watch at once.
The catch
Sync between devices is unreliable — completing or adding a reminder on one device doesn't always show up on another until you reopen the app.
One-time purchasePersistent remindersiCloud sync

Paperless: Lists + Checklists

James Rhoades
View on the App Store ›
$2.99 once4.4★ (492)Updated Jan 15, 2023
Verdict
A straightforward list-making app that people stick with for years, praised mostly for simplicity rather than features. Its sync relies on Dropbox, which some reviewers find limiting or unreliable rather than a modern iCloud-style handoff.
Best for
Someone who wants dead-simple checklists (groceries, packing, reminders) on their iPhone and doesn't mind setting up Dropbox if they want the lists on another device.
The catch
Syncing across devices depends on a Dropbox account, and a couple of reviewers report lost lists after syncing that way.
One-time purchaseReusable checklistsiCloud sync

gTasks Pro for Google Tasks

JulyApps Ltd
View on the App Store ›
$19.99 once4.6★ (1,245)Updated Oct 25, 2023
Verdict
The one worth buying only for what it connects to: it is a proper iPhone front end for Google Tasks, which Google itself has never really built.
Best for
Someone whose tasks already live in Google Tasks and have to stay there.
The catch
Syncing is almost evenly split in the reviews — thirty-two say it works, twenty-seven say it does not — and five more say support did not reply when it broke.
One-time purchaseGoogle TasksiPhone and iPad

2Do Legacy Edition

Beehive Innovations Services
Buy from Beehive Innovations Services (not on the Mac App Store) ›
$9.99 once4.7★ (3,723)Updated Sep 8, 2026unverified
Verdict
Well liked and well built, with an unusual amount of control over how tasks are organised. It is also not the version the developer wants you to buy.
Best for
Someone who already owns it and wants to know whether to keep using it. Not a new purchase.
The catch
The listing opens by telling you this is the legacy version and pointing at a newer one. Four of the last two hundred reviews say it has been left to rot.
One-time purchaseSupersedediCloud and Dropbox

Side by side.

AppPriceSyncs withRemindersMade forUpdated
Things 3$9.99 once iCloudStandardPlanning a weekOct 22, 2026
Due - Reminders & Timers$7.99 once iCloudRepeat until doneThings you ignoreOct 25, 2026
Paperless: Lists + Checklists$2.99 once iCloudStandardReusable checklistsJan 15, 2023
gTasks Pro for Google Tasks$19.99 once Google TasksStandardGoogle Tasks usersOct 25, 2023
2Do Legacy Edition$9.99 once unverifiediCloud, DropboxStandardExisting owners onlySep 8, 2026

Who should skip this entirely.

Apple Reminders is free, already installed, syncs across everything and now handles lists, dates, locations and repeats. If you have not hit a wall with it, none of these will feel like an upgrade. Buy one when you know what Reminders will not do for you — persistent nagging, reusable checklists, or a link to tasks that live somewhere else.

Questions.

Why is there no Todoist or TickTick here?Both are free to install and charge yearly for the features most people want, so neither passes the rule this list is built on.
Do any of these work on a Mac as well?Several have Mac versions, but they are separate App Store listings bought separately. The prices here cover iPhone and iPad only.

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