Hetk Reviews and Details

Questions & Answers

1. What makes Hetk unique?

   The iCloud support. Most calendar sync tools cover Google and Outlook and stop there, which leaves Apple users stuck either copying events by hand or using something half-broken. Hetk does Google, Outlook, and iCloud, with the Apple side going over CalDAV.

   The control over what actually shows up on the destination calendar. When an event mirrors across, you can keep the original title, description, and location, or replace everything with an opaque "Busy" block (no title, no attendees, no location). It's per sync, per direction. Your work calendar can show up on your personal one as featureless "Busy" blocks while the personal one stays fully detailed, going the other way. Most other tools copy the event verbatim and call it done.

   Sync runs via webhooks, so a change in one calendar is reflected in the other within a few seconds. No polling interval to wait out, no reschedules sitting in limbo for ten minutes.

   One non-technical thing worth flagging: Hetk is a calendar sync product, full stop. Reclaim and Motion want to take over your week. Calendly wants to be your booking page. Hetk doesn't try to do any of that. The sync is the entire product, and it'll stay that way.

2. Who are some of the biggest customers of Hetk?

   Hetk doesn't really have "biggest customers." It's priced and built for one person at a time. $15 a year, sign up, connect your calendars, done. No enterprise plan, no contract, no account manager. A freelancer pays the same as anyone else and gets the same thing. If you're shopping for a tool to roll out across a 5,000-person org, this isn't that.

3. How would you describe the primary audience of Hetk?

   Individuals juggling more than one calendar who are tired of either copying events by hand or having one calendar quietly lie about their availability.

   The most obvious group is freelancers and consultants with a calendar per client. Each client should be able to see when you're already booked, but absolutely should not see the names of the other clients booking you.

   Then there's everyone with both a work account and a personal one. Dentist appointment goes on the personal calendar, shows up on the work calendar as a plain "Busy" block, and your colleagues stop double-booking your Tuesday afternoons without learning anything about your dental health.

   Couples and families who want to schedule around each other's availability without having to read each other's calendars.

   Mixed-platform households where one of you is on Google and the other is on iCloud, and the two calendars otherwise act like the other one doesn't exist.

4. Why should a person choose Hetk over its competitors?

   "Calendar sync" gets used to describe at least three categories of tools on this site, so the honest answer depends on which one you're actually shopping for.

   For the direct competitors (OneCal, CalendarBridge, SyncThemCalendars), Hetk is cheaper ($2/month for individuals vs. $5+), treats iCloud as a first-class platform rather than an afterthought, and gives you real control over what crosses over to the destination calendar. Most of those tools copy the event as-is. Hetk lets you strip the title, location, and attendees on the way over, so the destination only sees that the time is taken.

   For Reclaim, Clockwise, or Motion, the answer is different: those aren't really sync tools. They're schedulers that try to redesign your week for you. Hetk doesn't do that. If you already have a system that works and you need your calendars to stop lying about your availability, Hetk is the right shape of product, and those aren't.

   For Calendly or SavvyCal, the answer is shorter still: those are booking pages, not sync—different problem.

   Across all of them, Hetk is built by a small independent company in Estonia. We don't sell ads. We don't train models on your event data. We're not setting you up to be upsold into a CRM later. The sync is the whole business, the pricing reflects that, and there's no second product hiding behind it.

5. What's the story behind Hetk?

   My calendar sync broke when New Outlook dropped plugin support. The SaaS alternatives were built for procurement departments, not people. I wasn't alone. Hetk: set up once, never think about it again.

6. Which are the primary technologies used for building Hetk?

   Backend: .NET 10, Clean Architecture with CQRS, FastEndpoints for HTTP, MassTransit for async webhook processing, EF Core on Azure SQL, Hangfire for background sync jobs.

   Frontend: Angular 20 with standalone components and signals. OAuth 2.0 with PKCE for Google and Microsoft sign-in; Apple iCloud goes over CalDAV with an app-specific password.

   Infra: Azure (App Service, SQL, Key Vault, Application Insights) behind Cloudflare for DNS, Pages, and email routing. All of it is OpenTofu — no ClickOps.

   Payments through Stripe.

Is Hetk good?