A free CalendarBridge alternative
Updated
CalendarBridge connects your Google and Microsoft accounts and syncs events between them. It writes busy-blocks back into each calendar and adds scheduling pages and an AI assistant on top. It's a capable tool, but it's priced and built for that full sync-and-schedule workflow: around $4–5/mo for two accounts, up to $32–40/mo at the top tier.
If what you actually want is simpler, to see all my calendars in one place, you don't need a two-way sync engine reaching into your accounts. iCal Merge reads each calendar's feed and publishes one combined, read-only link you can subscribe to anywhere. It works with any calendar that exposes an iCal/ICS URL and never writes to your accounts. A useful plan is free; Pro is $5/mo or $50/yr.
iCal Merge vs CalendarBridge at a glance
| iCal Merge | CalendarBridge | |
|---|---|---|
| What it does | Merges feeds into one read-only link | Two-way sync between connected accounts |
| Entry price | Free (1 calendar, 3 sources) | $4–5/mo (2 accounts) |
| Paid plan | $5/mo · $50/yr for 10 calendars, 25 sources | $8–40/mo by tier |
| Works with | Any iCal/ICS feed: Google, iCloud, Outlook, Notion, sports apps… | Google & Microsoft accounts (OAuth) |
| Access to your calendars | Read-only, never writes | Read & write (syncs busy-blocks in) |
| Setup | Paste a feed URL | Connect each account via OAuth |
| Prevents double-booking at the source | No; shows clashes in one combined view | Yes; writes busy-blocks back |
| Scheduling pages | No | Yes |
| AI assistant / HIPAA BAA | No | On higher tiers |
Competitor details reflect each vendor's published plans at the time of writing (verified August 2026); check their pricing pages for the latest.
Where iCal Merge wins
- Price. One flat Pro plan at $5/mo (or $50/yr) covers 10 calendars and 25 sources. That's less than CalendarBridge's entry tier, and a fraction of its $32–40/mo top tier. Most people never need to pay at all.
- Works with any calendar. Anything with an iCal/ICS link: iCloud, Outlook, Notion, your kid's sports app, a league fixture list, a school feed. CalendarBridge is built around OAuth-connected Google and Microsoft accounts.
- Read-only by design. We never get write access to your calendars. We read each secret feed and publish a separate combined link. Nothing iCal Merge does can alter, delete, or move an event in your real calendar.
- Nothing to install or connect. Paste a feed URL and you're done. No account linking, no browser extension, no busy-block clutter written into your calendars.
Where CalendarBridge does more
We'd rather be straight with you than oversell. CalendarBridge does real things iCal Merge deliberately doesn't:
- Two-way sync. CalendarBridge writes busy-blocks back into each connected calendar, so a meeting on your work calendar shows up as "busy" on your personal one and prevents scheduling conflicts at the source. iCal Merge produces one combined feed you subscribe to. It shows everything in a single view but doesn't write back into your other calendars.
- Scheduling pages. CalendarBridge includes Calendly-style booking pages. iCal Merge doesn't do scheduling.
- AI assistant & HIPAA BAA. Their higher tiers add an AI executive assistant and a HIPAA Business Associate Agreement for regulated use. iCal Merge offers neither.
The honest test: if your goal is to prevent double-bookings by syncing availability between accounts, CalendarBridge is built for that. If your goal is to see every calendar in one place, iCal Merge does exactly that for far less.
What the merged feed looks like
Every source keeps its own label, so the combined feed still shows at a glance where each event came from. A clash between two calendars is easy to spot in one view.
Other CalendarBridge alternatives
iCal Merge isn't the only option, and the right one depends on which job you need done. Tools that merge calendars into one feed and tools that sync events between accounts get lumped together constantly, but they solve different problems:
- Calendar Combine: merges iCal feeds into one subscription link, the same job as iCal Merge. Free for 1 calendar and 3 sources; Pro is $12/yr for 10 calendars, 20 sources each and 15-minute refresh. Best for anyone who wants the cheapest paid plan and is fine with a 15-minute refresh.
- MergeCal: also merges feeds into one calendar, but every tier is paid and the entry tier only refreshes every 12 hours. No free tier: a trial, then $2/mo for 2 calendars (3 feeds each), $10/mo for 5, or $20/mo for unlimited. Best for vacation-rental hosts and tour operators, which is who it markets to.
- OneCal, SyncGene and similar: run two-way sync, writing events or busy-blocks between connected accounts, which is the same job as CalendarBridge. Best for anyone whose real need is blocking availability across accounts, not viewing it in one place.
You can also skip tools entirely: most calendar apps let you subscribe to several iCal URLs directly, and Google Calendar has Other calendars → From URL. That's free and fine for two or three calendars. It stops working when you need one link to hand to someone else, or a wall display that only accepts a single feed. That gap is what merge tools exist to fill.
Which one should you pick?
- Pick iCal Merge if you want one combined, auto-updating feed to view or share, you have calendars beyond Google/Microsoft, you'd rather not give a tool write access to your accounts, or you just don't want to pay $30+/mo.
- Pick CalendarBridge if you specifically need two-way availability sync between connected accounts, built-in scheduling pages, or HIPAA coverage.
Frequently asked questions
Is iCal Merge a free CalendarBridge alternative?
iCal Merge has a genuinely free plan that merges one calendar with up to three sources into a single read-only feed. Pro is $5/mo or $50/yr for 10 calendars and 25 sources. CalendarBridge’s paid individual plans start around $4–5/mo and go up to $32–40/mo, so iCal Merge is substantially cheaper for the “see everything in one place” use case.
What are the alternatives to CalendarBridge?
It depends which job you need. To see several calendars in one place, merge-to-feed tools like iCal Merge and Calendar Combine combine any iCal/ICS feeds into a single subscription link, and MergeCal does the same aimed at rental hosts. To block availability across accounts, OneCal and SyncGene do CalendarBridge’s two-way sync. For two or three calendars you can just subscribe to each feed directly in your calendar app. That only breaks down when you need one shareable link or a display that accepts a single feed.
Does iCal Merge sync events between my calendars like CalendarBridge?
No. CalendarBridge does two-way sync: it writes busy-blocks back into each connected account to prevent conflicts. iCal Merge instead reads each calendar’s feed and publishes one combined, read-only link. You see every event in one place, but iCal Merge never writes to your real calendars. If true two-way availability sync is what you need, CalendarBridge is built for that.
Do I have to connect my Google or Microsoft account?
No. iCal Merge works from each calendar’s iCal/ICS feed URL. You paste the link rather than granting account access. That also means it works with calendars CalendarBridge doesn’t connect to, like iCloud, Notion, sports apps, and league fixture feeds.
Can iCal Merge stop me double-booking?
It puts every calendar in one view, so an overlap is easy to see at a glance. It does not write availability back into your accounts the way CalendarBridge’s sync does. If preventing conflicts automatically at the source is the priority, that’s CalendarBridge’s strength.
Which should I choose?
Choose iCal Merge if you want one combined, auto-updating feed to view or share, you use calendars beyond Google and Microsoft, or you’d rather not give a tool write access to your accounts. Choose CalendarBridge if you specifically need two-way sync, built-in scheduling pages, or HIPAA coverage.
Related: Merge Google Calendar & Outlook · What is an iCal feed?