Bubo and Assistent.ai are both EU-built phone assistants that answer restaurant calls and turn them into reservations, but they are built at different widths. Assistent.ai is narrowly and deliberately focused on restaurant table reservations. Bubo covers reservations too, but as one of six verticals, with WhatsApp and payment collection built around the call.
Everything below about Assistent.ai comes from Assistent.ai's own website, checked in August 2026. Assistent.ai was not asked to review this comparison, and vendor pages change — check theirs directly before deciding.
What Assistent.ai actually does
Assistent.ai is a Frankfurt-based company describing itself as "der Telefonassistent für smarte Restaurants" — the phone assistant for smart restaurants. According to its own site it answers incoming calls, captures everything a reservation needs — party size, date, time, and requests like outdoor seating, a dog, or a champagne reception — checks the restaurant's real table capacity, bookable time windows and closed days, and passes a confirmed reservation straight into the restaurant's existing reservation system. It names integrations with several German-market platforms, including RESERViSiON, reservino and Gastro.Digital.
If a restaurant has no reservation software at all, Assistent.ai still works: it captures the request and staff approve or decline it in one click rather than the assistant booking it blind. It also answers the usual questions — opening hours, order questions, accepted payment methods — and sends confirmations by SMS. Anything it cannot resolve after a couple of attempts, or where the caller asks for the owner directly, it hands over.
Where Bubo and Assistent.ai genuinely differ
How wide each one goes. Assistent.ai is restaurant-only by design, and its named integrations reflect that focus on the German restaurant-software market specifically. Bubo covers restaurants as one of six verticals — restaurants and hospitality, health and personal care, trades and automotive, property and professional services, retail and e-commerce, rentals — with configuration for each rather than one deep integration list.
Which channel follows the call. Assistent.ai's own site describes SMS as the channel after the call. Bubo sends confirmations, no-show reminders and payment links over WhatsApp, which across much of the EU is where guests actually read messages. Which of those is better depends entirely on where your guests are.
Payment and deposits. The Assistent.ai pages reviewed here describe answering questions about which payment methods a restaurant accepts, but not collecting a deposit or sending a payment link during or after the call. Bubo can send a payment link over WhatsApp or take a deposit as part of the booking sequence.
Working without a reservation system. This is a genuinely well-designed detail on their side and worth saying plainly: a restaurant with no booking software still gets something usable, because the request is captured and approved in one click rather than refused for lack of a system to verify it against. Bubo has a related mechanic — a phone order waits for the business's approval rather than auto-confirming — but that is about orders, not a fallback for restaurants with no diary at all.
How each one is priced. Assistent.ai bills purely on usage, tied to call and SMS volume, with no monthly minimum and a one-time €99 setup fee for new customers. Ours is a monthly plan with minutes included and €0.29 a minute beyond them, from €59 a month plus a one-time €149 setup — the pricing page has the current figures.
Pricing
The two are shaped differently rather than priced differently, and that is the useful thing to understand. Assistent.ai's model costs nothing in a quiet month and rises with every call; ours is a fixed monthly amount with an allowance, and only goes above it when the allowance runs out.
Which is cheaper depends entirely on your call pattern rather than on either headline. A restaurant taking a handful of calls a week will very likely pay less on pure usage. A restaurant with steady volume gets a predictable bill and a lower effective rate from an allowance. Work out your own monthly calls first, then read both. The real cost of a missed call is the other half of that sum.
Which one actually fits your restaurant
Assistent.ai is a strong fit for a German-market restaurant already on one of its named reservation platforms, or a restaurant with no reservation software at all that wants a simple, low-commitment way to capture and approve requests without a monthly minimum. Bubo is the better fit for a restaurant that wants WhatsApp confirmations and reminders rather than SMS, wants payment or deposit collection inside the flow, or is part of a business that runs beyond restaurant reservations — a hospitality group with retail or property operations, where one system across verticals is simpler than several specialists.
As with any vendor comparison, testing both against your own calls beats reading either company's pages. How to choose an AI phone answering service sets out what to test for, and a demo is built around your own restaurant.
Frequently asked questions
Is Assistent.ai GDPR compliant?
Assistent.ai is a Frankfurt-based company operating under German and EU data protection law by default. The pages reviewed for this comparison did not include a dedicated GDPR statement with the level of detail some providers publish, so check their own privacy documentation directly for the specifics that matter to your restaurant.
Does Assistent.ai support WhatsApp?
On the pages reviewed here, Assistent.ai's stated channel after the call is SMS rather than WhatsApp. Confirm directly with them if WhatsApp specifically matters for how you talk to guests.
Does Assistent.ai take payments over the phone?
The pages reviewed describe answering questions about accepted payment methods, but not collecting a deposit or payment during or after the call. Confirm directly with Assistent.ai if this matters to you.
Can I switch from Assistent.ai to Bubo?
In most cases yes — Assistent.ai states it works through call forwarding that can be switched on or off at any time, which suggests moving means redirecting that forwarding rather than anything more involved.
Which one is cheaper?
It depends on your call pattern, not on either company's headline. Usage-based billing with no minimum can be genuinely cheap for a restaurant with few calls; a monthly allowance is more predictable and usually cheaper per call once volume is steady. Get a current quote from both against your own monthly calls.
Is this comparison biased, since it's published by phone-assistant.ai?
Reasonably assume some bias in any vendor-published comparison — which is why this piece says plainly that Assistent.ai's fallback for restaurants without booking software, and its usage-based pricing with no minimum, are genuinely well-designed for the restaurant it is built for, rather than claiming Bubo is simply better across the board.