Compared August 2026 · every price and feature below was checked against SyncThemCalendars’s own site on 28 August 2026. These change — check the SyncThemCalendars site before deciding.
Straightforward hosted sync with field masking, priced by how many syncs you run.
SyncThemCalendars is the closest thing to a like-for-like hosted version of what Calendar Mirror does: copy calendars, hide the details behind a “Busy” block. It supports Google, Outlook and Apple iCloud, and it prices by the number of syncs you run rather than by feature tier.
The real choice is hosted or not. If you need the sync to run with no Apple device involved — or you are not on Apple at all — theirs runs on a server and Calendar Mirror cannot. If every device you own is Apple, Calendar Mirror does the same job for $2.99 once, with nothing transmitted.
| Calendar Mirror | SyncThemCalendars | |
|---|---|---|
| Price | $2.99 once · free from source | $3.99 / $7.99 / $17.99 per month for 5 / 16 / 36 syncs; $47.88 / $95.88 / $215.88 yearly |
| Account required | None | Yes |
| Where your calendar goes | Nowhere. It never leaves the device. | To their servers |
| Platforms | iPhone, iPad, Mac | Web |
| Calendar sources | Anything the device can see — iCloud, Google, Exchange, CalDAV, subscribed ICS feeds | Google, Outlook and Apple iCloud |
| Number of mirrors | Unlimited | 5, 16 or 36 depending on tier |
| Hiding details | Per-mirror: full copy, title and location only, or a plain “Busy” block | Field masking — hide title, description, location and more behind a “Busy” block |
| Sync frequency | Detects changes within seconds on macOS (standalone build); otherwise on a schedule | Not published |
| Per-event override | Yes — a tag in an event's notes | Not published |
| Duration filters | Yes | Not published |
SyncThemCalendars covers Google, Outlook and iCloud. What it cannot do is reach a calendar that only exists on your device — a subscribed ICS feed, or an Exchange account configured in macOS rather than shared out.
Calendar Mirror can hand those over. Mirror the feed into a real iCloud or Google calendar first, and SyncThemCalendars can work with it like any other. This is the useful pattern for read-only team feeds and assigned-shift calendars, which are exactly the ones no hosted tool can authenticate to.
Bridging adds a hop: Calendar Mirror writes the copy on your device, and the other service then reads that copy on its own schedule. It needs the destination account set up on your Mac or iPhone, and the copy is one-way, like every Calendar Mirror mirror.
None of these are coming later. If you need one of them, buy something else:
One purchase covers iPhone, iPad and Mac. Calendar Mirror is not affiliated with SyncThemCalendars in any way, and this page is written by Calendar Mirror’s author.