Trumba makes you book an implementation call, clear sample events by hand, and stage-then-deploy before your first calendar goes live. AddCal makes you a calendar link in 5 seconds: unlimited, on every plan, including free.
No credit card • No sales call • Free forever
Trusted by teams at IBM, Cisco, Stanford, MIT, Deloitte & SAP. The same enterprises Trumba sells to, without the spuds.
Bottom line: Trumba is a project. AddCal is a product. If you want audience reach without the implementation, AddCal is the faster path.
Three differences do most of the work when people switch.
Trumba ships a 7-step implementation guide, a startup wizard with sample events you clear by hand, and a stage-then-deploy cycle. AddCal: sign up, first event in 5 seconds. No wizard, no staging environment.
Trumba's paid registration, custom objects, resource scheduling and data Connector all say "contact Support to enable." Every AddCal feature is live the moment you sign up, with no sales call between you and your first link.
Trumba caps analytics to a rolling 3 months, caps event forwarding, and gates pricing behind sales. AddCal is unlimited adds and clicks on every plan including free, with full analytics history and published pricing (from $12/mo).
We hear the same friction over and over from people leaving Trumba.
A 7-step implementation guide, a startup wizard with sample events you must clear by hand (no undo), and a staging-then-deploy cycle stand between you and your first published calendar.
Paid registration, custom objects, resource scheduling and the data Connector all need Trumba Support to switch on for you. There is always a gate, and often a quote, between you and the feature.
Analytics is a rolling 3-month window, event forwarding is capped at 10-50 friends, and there is no published price, so you request a quote and wait. Growing programs hit those walls fast.
Sign up and create your first event in seconds, with no implementation guide, no staging, and no support ticket to enable features.
Every feature is enabled the moment you sign up. Nobody has to turn anything on for you, and there is no quote to chase.
Unlimited adds and clicks on every plan including free, with published pricing from $12/mo, no rolling analytics cap, and no forwarding limits.
Real-time sync, webhooks, Smart Links, Zoom and 8000+ Zapier apps, instead of Google sync that lags hours and a poll-only CSV API.
No credit card • No sales call • Free forever
| Feature | ||
|---|---|---|
| Setup time AddCal Advantage | ~5 seconds, self-serve | 7-step guide + staging |
| Pricing AddCal Advantage | Published from $12/mo | Sales-gated quote |
| Free tier AddCal Advantage | Unlimited adds & clicks | None (sales motion) |
| Feature gating AddCal Advantage | Everything on at signup | Many features "contact Support to enable" |
| Self-service billing |
This is the core difference. Trumba is a publishing platform you implement; AddCal is a product you sign up for. Everything is on from your first minute, and the price is on the page.
| Feature | ||
|---|---|---|
| Add-to-calendar links (Google/Apple/Outlook/M365/Yahoo) | ||
| Subscription calendars (auto-sync) | ||
| Calendar views (month/week/list) | ||
| RSVP / registration | ||
| Embeddable widgets AddCal Advantage | One snippet | Spuds (manual JavaScript) |
| Multi-format feeds (iCal/RSS/JSON/CSV) | Subscription feed | iCal/RSS/JSON/CSV |
| Real-time sync AddCal Advantage | Real-time + webhooks | Google sync lags hours |
Both platforms cover the everyday calendar work. AddCal does it with one universal link and one embed snippet; Trumba does it with published calendars and "spuds": manual JavaScript snippets that need a developer.
| Feature | ||
|---|---|---|
| Smart Links (dynamic event creation) AddCal Advantage | ||
| Zapier (8,000+ apps) AddCal Advantage | ||
| Zoom integration | ||
| Webhooks AddCal Advantage | ||
| ICS calendar import |
AddCal is built for modern automation. Smart Links create events straight from a URL (idempotent, so a webhook firing twice never duplicates), and webhooks fire in real time. Trumba has no Zapier, no webhooks and no equivalent to Smart Links.
| Feature | ||
|---|---|---|
| Analytics history AddCal Advantage | Full history, no cap | Rolling 3-month cap |
| API AddCal Advantage | REST, granular tokens, on free tier | Poll-only CSV, BASIC auth |
AddCal keeps your full analytics history and offers a REST API with granular tokens on every plan, including free. Trumba caps analytics to a rolling 3 months, and its registration "API" is poll-only CSV with BASIC auth.
| Feature | ||
|---|---|---|
| Paid registration / ticketing | ||
| Room / resource scheduling | ||
| Custom objects / directories | ||
| 6–7 tier permissions |
We keep these honest. Trumba is a heavier, enterprise publishing platform and genuinely does more here. AddCal leaves this out on purpose. It is a different product for a different job. If you need paid ticketing or room scheduling, Trumba is the heavier tool.
Import your events in minutes, then re-share one permanent AddCal link. From there it never breaks again, even if you rename things, unlike Trumba where a web-name change breaks every embed.
Grab the .ics feed Trumba auto-generates for each published calendar.
Go to Import → ICS, then paste the feed URL or upload the file.
Your events land in a new calendar with a share link that never breaks.
Good to know: ICS import is a one-time import, not a live recurring sync from Trumba. If you need your AddCal calendar to keep pulling from an external source on a schedule, use AddCal's external calendar sync feature instead.






















One universal link that works in Google, Apple, Outlook and more.
A feed people subscribe to once that keeps itself up to date.
Drop a live calendar on any site with one snippet, no spuds.
Create events straight from a URL for automation and integrations.
See how AddCal compares to AddEvent.
See how AddCal compares to CalGet.
Common questions about switching from Trumba to AddCal
You can have a working, shareable, unlimited calendar before Trumba's onboarding email lands in your inbox.
Comparison based on publicly available Trumba documentation as of June 2026. Trumba is a trademark of its respective owner. Details may change.