How Rendly understands your customers in under a second.
Your customers type natural language on WhatsApp. Rendly extracts the intent, the date, the time and the constraints — and only calls the AI when it's necessary, to stay fast and economical.
Four steps, under two seconds
Rendly handles the majority of messages without ever calling AI. Artificial intelligence only comes into play for unusual phrases.
Ultra-fast regex
150+ patterns: "next Monday", "tomorrow", "from…", "only on…"
Smart AI
Activated only if the regex doesn't recognise the phrase. Not before.
Constraint extraction
Structured output, ready to query the calendar:
Action on the calendar
The bot queries your calendar, filters the slots and replies:
- Propose slots
- Send a mini-form
- Confirm the appointment
- Reschedule or cancel
Got it! Here are the first free slots on Monday / Friday from 26 May:
The customer replies with the number to book.
Three things others don't dare to say
AI everywhere is expensive, slow, and sends your data to American giants. Rendly does the opposite — and that changes everything.
Lightning fast
Most messages are understood instantly, without any AI call. No "the bot is thinking…" that annoys your customers.
No surprise on the bill
100% AI solutions cost a fortune in tokens with every message. With us, the AI is only called when it's useful. Your subscription price is fixed, full stop.
Your data stays here
Compliant with FADP + GDPR. Your conversations are not used to train models. No data resale.
Your data never leaves Switzerland
We designed Rendly for SMEs, to Swiss standards. Here's what that means in practice.
Hosting in Switzerland
Servers in Switzerland. Your appointments, your customers, your conversations — everything stays here. No transfer outside the EU / CH.
No training on your conversations
When the AI is called (complex cases only), it's in "do not retain" mode with the provider. Your messages serve only to reply to your customer.
FADP + GDPR native
Compliant with the Swiss Federal Act on Data Protection (revised 2023) and the GDPR. Right to be forgotten, portability, access — everything is included.
No resale, no advertising
You pay a subscription, full stop. No advertising partner, no data broker, no "freemium" paid for by your customers.
Secure connection
Messages travel via WhatsApp (encrypted) then Twilio (official Meta BSP partner) to our servers in Switzerland, all over HTTPS.
Export + deletion in 1 click
Leaving? Download all your appointments as CSV / ICS from the settings and request deletion. Within 7 days, no trace remains.
Why WhatsApp rather than a web form?
| Rendly · WhatsApp | Online form | Phone | |
|---|---|---|---|
| The customer uses an app they already have | ✓ | — | ✓ |
| Available 24/7 | ✓ | ✓ | — |
| The customer speaks in natural language | ✓ | — | ✓ |
| No account to create | ✓ | — | ✓ |
| Automatic reminder the day before (~98% read rate) | ✓ | — | — |
| Doesn't disturb you during a treatment | ✓ | ✓ | — |
| Understands your trade's vocabulary | ✓ | — | ✓ |
| Zero gaps in the calendar | ✓ | — | — |
Rendly learns your trade
A mechanic talks about "repairs". A physiotherapist about a "session". A hairdresser about "colour". Rendly adapts to each professional's vocabulary — and grows richer with every conversation.
The mechanic's catalogue
- Oil change · 45 min120 CHF
- Brakes · 1h30280 CHF
- Diagnostics · 30 min50 CHF
- Tyres · 45 min90 CHF
- Repair · 1hon quote
You fill in this catalogue once — at onboarding or later from the settings.
• Thu 22/05 · 14:30
• Fri 23/05 · 11:0010:42 ✓✓
And next time…
Rendly remembers that "my car is making a noise" = diagnostic at this mechanic. Next time, the bot replies in < 1 ms, without calling the AI. The more you use it, the faster and more precise it becomes on your trade.
Sector packs pre-filled at onboarding — customisable afterwards.
Your calendar fills up without gaps
Rendly doesn't propose slots at random. It analyses your calendar in real time and prioritises the slots adjacent to your existing appointments — so your day stays compact.
Fragmented day
Compact day
How does it work?
For each new customer, Rendly assigns a score to every slot: +3 points if it's next to an existing appointment, +1 if it's in the same half-day. The slots with the best score are proposed first. The result: your appointments group together naturally, with no effort on your part.
Configurable in your settings: Smart mode (default) or Strict mode (adjacent slots only).
A few phrases Rendly understands
No menu, no form. Your customers write the way they speak.
Still have questions? Check the FAQ →
See Rendly understand your customers, live
Test the bot on your own trade in 2 minutes. No sign-up, no commitment.