Tasks & Subtasks 2026: Limits, Costs, Best Practices

A task is a single unit of work you intend to finish; a subtask is a smaller, dependent step nested under it. In 2026, the catch isn't the concept. It's the hidden free-tier caps and the price spread you pay to unlock deep nesting.

Key takeaways

• A subtask is a discrete sub-step nested inside a parent task. Google Tasks supports them but caps all tasks at 100,000 total.
• Free tiers hide real constraints. TickTick allows only 19 subtasks per task on its free plan.
• Buying Things 3 for Mac plus iPhone costs $59.98, almost exactly one year of Todoist Pro ($60). One-time fee versus recurring subscription.
• OmniFocus's $99.99/year subscription costs roughly 2.8x TickTick Premium's $35.99/year.
• Best practice: break tasks into 3-7 sequenced, verb-led subtasks, each with a single owner and due date.

What Are Tasks and Subtasks?

A task is a single unit of work you intend to complete. A subtask is a smaller, dependent step nested underneath it that breaks that work into actionable pieces. Subtasks inherit context from the parent but can carry their own due dates, assignees, or checkboxes, letting you track partial progress instead of one all-or-nothing checkbox.

• Parent task = the outcome; subtask = the concrete next action.
• Subtasks can carry independent due dates and completion status.
• Nesting depth varies. Some apps allow multiple sublevels, others cap at one. Google Tasks supports subtasks but enforces a 100,000-task ceiling across all lists.

What Is the Difference Between a Task and a Subtask in Project Management?

A task represents a complete deliverable or goal. A subtask is one sequential piece required to finish that task. The difference is scope, not importance. Tasks get tracked at the project level with deadlines and priorities, while subtasks exist only to make the parent achievable and usually stay invisible outside it.

• Tasks map to outcomes; subtasks map to the actions needed to reach them.
• Subtasks usually can't exist without a parent task.
• Reporting and goal tracking across week, month, year, and multi-year horizons happens at the task or project level, not the subtask level.

Why Should You Break Tasks Into Subtasks?

Breaking tasks into subtasks turns a vague, intimidating goal into a visible sequence of small, completable steps. Each checked-off subtask shows progress, which helps you keep moving. That's especially valuable for freelancers and founders juggling multiple concurrent projects.

• Smaller steps lower the effort needed to start work.
• Visible partial completion helps you keep momentum.
• Sequenced subtasks help you estimate realistic timelines for multi-part deliverables.

How Do Subtasks Help With Project Organization and Productivity?

Subtasks organize scattered project work into a traceable hierarchy, so nothing gets lost between planning and execution. They let individuals and small teams see at a glance what's blocking a task, track partial progress toward weekly or monthly goals, and reallocate effort without rewriting the entire project plan.

• Enables partial-progress tracking instead of binary done/not-done.
• Surfaces bottlenecks. A stalled subtask flags exactly where a task is stuck.
• Pairs well with goal horizons (week, month, year) for milestone tracking.

What Are the Best Practices for Creating and Managing Subtasks?

Effective subtasks are verb-led, sized to under 30 minutes, and limited to 3-7 per parent task. More than that usually signals the parent task needs splitting. Use natural language scheduling to assign dates fast, keep one subtask active at a time, and review stalled subtasks weekly to prevent silent backlog buildup.

• Start each subtask with an action verb: Draft, Call, Review.
• Cap subtasks per task at around 7 to avoid false complexity.
• Use natural language input like "tomorrow" or "next Friday" to schedule quickly.
• Prune stale subtasks weekly rather than letting them accumulate.

Does Google Tasks Allow Subtasks — and What Are the Real Limits?

Google Tasks supports subtasks but caps the total number of tasks, including subtasks, across all your lists at 100,000. Few users hit that ceiling. There's no separately published per-task subtask limit, so the practical constraint for most people is the overall total rather than nesting depth.

• The 100,000-task ceiling applies across all lists combined.
• No native recurring-subtask automation like "every Monday" scheduling.
• Well suited to simple checklists.

How Do You Add Subtasks to Your Tasks? (With an Example)

Adding a subtask usually means indenting a new line under a parent task or clicking an "Add subtask" option in the task detail view. For example, "Launch new website" breaks into "Write homepage copy," "Choose a hosting provider," "Set up the domain," and "Test on mobile," each trackable and completable on its own.

• Common pattern: open task, add subtask, indent or nest.
• Keyboard-first apps let you add subtasks without touching the mouse.
• The example shows sequencing in action: research, build, test, publish.

What Do Free Plans Actually Limit? A Subtask Constraints Comparison

Free tiers hide real subtask constraints. TickTick's free plan caps subtasks at 19 per task and 99 tasks per list, while Todoist's Beginner plan limits you to 5 personal projects. Google Tasks is the most generous with a 100,000-task ceiling but offers no structured nesting depth, so "free" rarely means unrestricted.

• TickTick free: 19 subtasks per task and 99 tasks per list.
• Todoist Beginner: capped at 5 personal projects, expanding to 300 on Pro.
• Google Tasks: 100,000 total tasks across all lists, no stated per-task subtask cap.
• These limits are rarely advertised prominently. Read the fine print before building a system on a free tier.

What Does It Cost to Unlock Full Subtask Management in 2026?

Pricing for full subtask and nested-list features spans a wide range in 2026. Todoist Pro runs $60/year, TickTick Premium is $35.99/year, Superlist Basic is $6/month, and OmniFocus asks $99.99/year or up to $149.99 for a one-time Pro license. The same core feature can differ by more than 4x depending on the app.

• Todoist Pro: $5/mo billed annually ($60/year), unlocks 300 projects.
• TickTick Premium: $35.99/year for higher subtask and list limits.
• Superlist Basic: $6/month, free tier capped at 5 private + 5 shared lists.
• OmniFocus: $99.99/year subscription or $74.99-$149.99 one-time license.

Data point: OmniFocus's $99.99/year subscription costs roughly 2.8x TickTick Premium's $35.99/year.

Subscription vs. One-Time Purchase: Which Actually Costs Less?

Things 3 breaks from the subscription norm, charging a one-time $49.99 for Mac and $9.99 for iPhone. That combined $59.98 sits almost exactly at one year of Todoist Pro ($60), but never bills again. Keep an app for three or more years and one-time models like Things 3 or OmniFocus's license can end up cheaper.

• Things 3 combined cost: $59.98 one-time for Mac + iPhone.
• That nearly equals one year of Todoist Pro ($60), but Things 3 never bills again.
• OmniFocus's $74.99 Standard License beats its own $99.99/year subscription after year one.
• Subscriptions win for continuous updates and real-time sync; one-time purchases win for long-term cost control.

Compare 6 Task Managers for Subtask Handling at a Glance

Across six popular apps, subtask depth, free-tier limits, and pricing vary sharply, from Google Tasks' generous but unstructured free ceiling to OmniFocus's expensive but powerful nesting. The table below lines up free-tier constraints and paid pricing so you can match the app to how deeply you actually need to nest and schedule subtasks.

Comparison Table: Subtask Limits and Pricing

App	Free-tier limit	Paid price	Notable subtask feature
Todoist	5 personal projects	$60/year (Pro)	300 projects, natural language dates
TickTick	19 subtasks/task, 99 tasks/list	$35.99/year	Habit tracking + calendar view
Things 3	No free tier	$59.98 one-time (Mac+iPhone)	Checklist items, no subscription
Amazing Marvin	14-day trial	$8/mo annual	Time Estimates per subtask
Superlist	5 private + 5 shared lists	$6/mo (Basic)	Voice AI task capture
OmniFocus	No free tier	$99.99/yr or $74.99-$149.99 one-time	Deep nesting hierarchies

Todoist: Best for Scaling Project Count as You Grow

Screenshot: Todoist website, July 2026.

Todoist suits users who start small but expect to expand. Its free Beginner plan caps you at 5 personal projects, while Pro jumps to 300 for $5/month billed annually ($60/year). Subtasks nest cleanly within projects, but heavy project growth forces an upgrade sooner than with flatter tools.

• Free tier: 5 personal projects only.
• Pro: 300 projects at $60/year billed annually.
• Strength: mature ecosystem, cross-platform apps, natural language due dates.
• Limitation: the free-tier project ceiling arrives fast for prolific list-makers.

TickTick: Best Budget Option With a Tight Free-Tier Subtask Cap

Screenshot: TickTick website, July 2026.

TickTick is a strong budget pick at $35.99/year for Premium, but its free tier's 19-subtasks-per-task and 99-tasks-per-list limits can quietly bottleneck detailed projects. Once you hit those caps, Premium unlocks materially more room at a lower price than most rivals charge.

• Free tier: 19 subtasks/task, 99 tasks/list.
• Premium: $35.99/year, among the cheapest premium unlocks here.
• Strength: built-in habit tracking and calendar view alongside tasks.
• Limitation: the free-tier subtask cap is stricter than most competitors.

Things 3: Best for a One-Time Payment, No Subscription

Screenshot: Things 3 website, July 2026.

Things 3 appeals to users who refuse recurring fees, charging $49.99 for Mac and $9.99 for iPhone as one-time purchases. Nested subtasks, called "checklist items," are fast to work with, but the app is Apple-only, locking out Windows and Android users.

• One-time cost: $49.99 (Mac) + $9.99 (iPhone) = $59.98.
• Nearly matches one year of Todoist Pro ($60), but never bills again.
• Strength: polished, fast, no subscription.
• Limitation: Apple-only, with no Windows, Android, or web version.

Amazing Marvin: Best for Time-Estimated Subtasks

Screenshot: Amazing Marvin website, July 2026.

Amazing Marvin stands out for its Time Estimates feature, letting users assign durations to subtasks so a day's workload becomes quantifiable before it starts. At $8/month billed annually after a 14-day trial, it aims at users who want highly customizable task breakdowns.

• Pricing: $8/month annual with a 14-day free trial.
• The Time Estimates feature visualizes workload by summing subtask durations.
• Strength: deep customization for detailed, habit-based workflows.
• Limitation: heavy configurability carries a steeper learning curve than simpler apps.

Superlist: Best for Collaborative Lists With Voice Capture

Screenshot: Superlist website, July 2026.

Superlist targets people who share subtasks with others, offering 5 free private and 5 shared lists before its Basic plan at $6/month. Its standout is Voice AI, which lets users speak tasks and subtasks straight into the app, handy for founders capturing to-dos on the move.

• Free tier: 5 private + 5 shared lists, up to 5 collaborators.
• Basic plan: $6/month for expanded limits.
• Voice AI lets users dictate tasks and subtasks hands-free.
• Limitation: the collaboration focus adds interface elements solo users may not need.

OmniFocus: Best for Power Users Needing Deep Nesting

Screenshot: OmniFocus website, July 2026.

OmniFocus offers the deepest subtask hierarchies of the group, aimed at power users managing complex, multi-layered projects. It's priced at $74.99-$149.99 as a one-time license or $99.99/year as a subscription. That subscription costs roughly 2.8x TickTick Premium's $35.99/year, reflecting a more advanced feature set.

• One-time licenses: $74.99 Standard, $149.99 Pro.
• Subscription: $99.99/year across Apple devices and the web.
• That $99.99/year is roughly 2.8x TickTick Premium's $35.99/year.
• Limitation: a steep learning curve and premium pricing versus lighter competitors.

Can AI Help Break Down Tasks Into Subtasks?

AI features in some task apps can draft a sequenced list of subtasks from a single vague goal, giving you a starting point when the first step is the hardest part. Treat the output as a draft rather than a finished plan, then review and edit it so each subtask stays realistic and specific.

• An AI-suggested sequence gives you a first draft to react to instead of a blank page.
• Voice-to-subtask capture, like Superlist's Voice AI, lowers the effort of logging a task.
• Pairing AI-suggested subtasks with streak-based habit tracking can reinforce recurring routines.
• Best used as a draft. Reviewing and editing AI suggestions keeps them realistic.

How Does Dooit Handle Tasks and Subtasks Differently?

Dooit treats subtasks as keyboard-native objects. Every add, complete, or reschedule action is built to resolve in under 50ms, and natural language input like "next Friday" or "every Monday" assigns dates without a mouse. Disclosure: Dooit is our product. Its single $9/month plan (7-day free trial) covers Kanban and list views, streak-based habit tracking, and goal horizons from week to multi-year.

• Actions built to complete in under 50ms, even when nesting or reordering subtasks.
• Switch between Kanban and list views with a single keystroke.
• Natural language scheduling for tasks and subtasks: "tomorrow," "next Friday," "every Monday."
• 20+ keyboard shortcuts plus full undo/redo for fast subtask editing.
• One $9/month plan, no tiers, 7-day free trial.
• Limitation: fewer third-party integrations than larger, longer-established suites.

Frequently asked questions

What are tasks and subtasks in a task management app?

A task is a discrete piece of work you plan to complete, and a subtask is a smaller step nested underneath it that helps you finish that task. Subtasks let you track partial progress on complex work instead of relying on a single completion checkbox for the whole task.

Does Google Tasks allow subtasks?

Yes, Google Tasks supports subtasks under a parent task, but it enforces a combined limit of 100,000 tasks across all your lists. There's no separately published cap on subtasks per task, so the overall total is the main constraint most users encounter.

How do you add subtasks to your tasks?

In most apps, you add a subtask by opening the parent task and selecting "Add subtask," or by indenting a new line beneath it. Keyboard-first apps let you do this without a mouse, for example pressing a shortcut to nest a new item directly under the task you're viewing.

What is an example of a subtask?

If the task is "Launch new website," example subtasks would be "Write homepage copy," "Choose a hosting provider," "Set up the domain," and "Test the site on mobile." Each is a small, completable action that collectively finishes the larger parent task.

Why should you break tasks into subtasks instead of leaving one big task?

Breaking a task into subtasks lowers the mental barrier to starting, since each step feels achievable rather than overwhelming. It also creates visible partial progress, which helps you keep momentum on large or vague projects.

What should you avoid when creating subtasks?

Avoid creating more than 7-8 subtasks under one task. That usually means the parent task itself needs splitting. Also avoid vague subtasks without a verb or owner; "Website stuff" isn't actionable, while "Write homepage copy" is clear and completable.

Want subtasks that add and reschedule as fast as you can think them? Start free with Dooit and plan your day in a keyboard-first, sub-50ms interface.