Recurring task and reminder sync layer for free-tier task app users

A freelancer or small team using the free tier of Any.do, Todoist, or similar tools hits a specific, recurring wall: they need tasks to repeat on a schedule, or they need their tasks to stay in sync across their phone and laptop, but both features require premium. The workaround is manual — copy-pasting tasks, or just accepting that their phone shows different tasks than their desktop. Users explicitly say this: 'you must use the premium version' to sync, and 'basic account users must copy-paste to add recurring tasks.'

This gap exists because syncing and recurrence are exactly the features incumbents use as the primary wedge to convert free users to paid. They'll never fix this for free users — it's their core conversion lever. That means the people who genuinely can't afford or justify $5-10/month for a task manager are permanently stuck doing manual work.

The structural insight is that most of these tools have public APIs or calendar integrations that a third-party service can use to approximate sync and recurrence without requiring the user to upgrade. A lightweight automation layer — think a personal IFTTT specifically for task management — could poll a user's free-tier account via API, create recurring task copies automatically on schedule, and push them across connected calendars or devices.

This is a business because the workaround cost is real and weekly. Someone copying tasks manually every Monday morning will pay $3-5/month to make that stop — especially if the alternative is paying $10+/month to the incumbent for features they otherwise don't need. The user base is large, acquisition is cheap (they're already complaining publicly in app store reviews and Reddit), and the switching cost of the automation layer itself creates retention.

What to build

Build a lightweight automation service that connects to free-tier task manager accounts via their public APIs, creates recurring task copies on a user-defined schedule, and syncs task state across connected Google Calendar or Outlook accounts — no premium upgrade to the underlying tool required.

Where to start

Start specifically with Any.do's free tier, where the recurring task limitation is one of the single most-cited complaints in App Store reviews, and offer a browser extension plus Google Calendar integration that handles weekly and monthly recurrence without touching Any.do's premium API endpoints.

The hard part

API access on free tiers is often rate-limited or restricted by the task tool vendors precisely because they don't want third parties enabling features they're monetizing — so you may find that the tools most complained about are also the ones that lock down API access on free accounts, forcing a pivot to calendar-based workarounds.

How it makes money

Flat $4/month subscription per user, positioning explicitly as cheaper than upgrading the underlying task app; annual plan at $35 to reduce churn.