Hetk vs SyncThemCalendars

Hetk vs SyncThemCalendars: at a glance

Where Hetk wins

Price

Hetk Personal ($15/year) is less than a third of SyncThemCalendars Basic ($48/year). Hetk Professional ($50/year) is comparable to their Basic plan and supports unlimited calendars with up to 8 sync pairs.

Support for unlimited calendars

Hetk supports unlimited connected calendars on both plans. SyncThemCalendars limits connected accounts based on plan. If you need to work with many calendars, Hetk’s unlimited calendar support is more flexible.

Longer free trial

21 days vs 14 days.

Identity transform

Hetk can replace the organizer email on synced events so they look native to the target calendar. This is useful when syncing between client accounts where you don’t want one client’s email appearing in another’s calendar.

Where SyncThemCalendars wins

Limited calendar accounts

SyncThemCalendars limits the number of connected calendar accounts by plan. Hetk supports unlimited calendars, so if you have many accounts to manage, Hetk is more flexible.

Event filtering by color

SyncThemCalendars lets you filter which events sync based on calendar color. Hetk syncs all events in a selected calendar.

Established track record

SyncThemCalendars has been operating since 2019 with Capterra ratings of 4.9/5. Hetk is newer to market.

Detailed pricing breakdown

Hetk pricing

• Personal: $15/year (early adopter: $10/year), unlimited calendars, up to 3 sync pairs
• Professional: $50/year (early adopter: $35/year), unlimited calendars, up to 8 sync pairs
• Cost per additional calendar: $0 (unlimited included)

SyncThemCalendars pricing

• Basic: $48/year, up to 5 connected accounts, 5 sync relationships
• Premium: $120/year, up to 10 connected accounts, 16 sync relationships
• Professional: $216/year, unlimited connected accounts, 36 sync relationships
• Cost per sync relationship: $9.60–43.20/year depending on plan

Real-world cost scenarios:

• 3 calendars, 2 sync pairs: Hetk $15/year (Personal), SyncThemCalendars $48/year
• 6 calendars, 5 sync pairs: Hetk $50/year (Professional), SyncThemCalendars $120/year
• 10 calendars, 8 sync pairs: Hetk $50/year (Professional), SyncThemCalendars $216/year (77% cheaper with Hetk)

Hetk Professional covers up to 8 sync pairs across unlimited connected calendars. If you need more than 8 sync pairs, SyncThemCalendars’ higher-tier pair caps may suit you better.

Feature-by-feature analysis

Both platforms handle multi-provider calendar synchronization with strong real-time capabilities. The key difference lies in how they meter pricing and what features come standard.

SyncThemCalendars’ pricing model caps both connected accounts and sync pairs per tier. Hetk’s model is inverted: you support unlimited calendars but have a sync pair cap per plan. If you have many calendar accounts to manage, Hetk’s unlimited calendar support saves you cost. If you have fewer calendars but need many sync relationships, SyncThemCalendars’ higher pair caps may offer more flexibility.

SyncThemCalendars includes event filtering by color, which is valuable if you want to selectively sync calendars. Hetk syncs entire calendars but doesn’t filter by color. For most users, color-based filtering isn’t a deal-breaker, but for teams managing complex calendar ecosystems, it can be useful.

Both platforms offer privacy controls, though Hetk’s are broader (Mark as Private, Show As, Identity Transform) and included at every tier. SyncThemCalendars’ privacy features are present but less granular. If you’re syncing sensitive information across accounts, Hetk’s controls give you finer-grained protection.

Hetk’s longer free trial (21 days vs. 14 days) also gives you more time to evaluate whether it fits your workflow before committing to a paid plan.

Switching to Hetk

If you’re using SyncThemCalendars and want to evaluate Hetk:

1. Start Hetk’s 21-day free trial and connect your calendar accounts
2. Create the same sync relationships in Hetk as you have in SyncThemCalendars
3. Test for a week to ensure your privacy settings work as expected
4. Review the sync logs to confirm events are syncing in real time
5. If satisfied, disable SyncThemCalendars, your calendar events stay in place; only the sync service changes
6. No migration needed, Hetk syncs directly to your existing accounts

SyncThemCalendars syncs are non-destructive; your calendar events exist independently. Switching means simply enabling Hetk’s sync and disabling SyncThemCalendars’ without risking any data.

FAQ

Does Hetk filter events by color like SyncThemCalendars?

No, Hetk syncs entire calendars and doesn’t offer color-based filtering. However, you can work around this by creating separate calendars for different purposes (work, personal, etc.) and syncing only the ones you need.

What if I have more than 8 calendars?

Hetk supports unlimited calendars on both plans. The Professional plan supports up to 8 sync pairs, which is enough to sync many calendars together. If you need more than 8 sync pairs, contact support about enterprise options.

How much do sync pair limits matter?

If you have 5 calendars and want them all synced to each other, that’s 10 sync pairs. Hetk’s Personal plan ($15) supports 3 sync pairs; Professional ($50) supports 8. If you need many sync pairs, compare against SyncThemCalendars’ tiers, but remember Hetk lets you add calendars freely within those pair limits.

Is SyncThemCalendars’ 4.9/5 Capterra rating better than Hetk’s?

SyncThemCalendars has been in the market longer, so it has more reviews. Hetk is newer (launched 2025) but has strong real-time sync and privacy controls. Both are reliable, the difference is Hetk is significantly cheaper and newer, while SyncThemCalendars has a longer track record.

Can I run both platforms simultaneously?

Not recommended. Running two sync services on the same calendars creates duplicate events and conflicts. Choose one per sync relationship.

Does color filtering matter for personal use?

For individuals managing a personal and work calendar, probably not. You’d typically sync entire calendars anyway. Color filtering is more useful for teams managing shared calendars or people with highly fragmented calendar structures.

Related: Best calendar sync tools in 2026