# Alternative to Dr. Flex (Dr. Flex)

Source: https://terminio.ai/en/vergleich/dr-flex-alternative

Dr. Flex or terminio.ai? Prices, features and limits compared honestly, with a switching guide and answers to the most common questions.

As of September 2026 · Sources: Dr. Flex's website and pricing page

## Verdict

- Dr. Flex fits if … you take few online bookings a month and want a German practice tool with WhatsApp and a voice AI already built in.
- terminio.ai fits if … people book online a lot and you want one price: no cost per booking, no cost per message, no surcharge per calendar.
- The biggest difference Per booking versus one plan. €39 plus €3.99 per online booking versus €0 to €19.99 a month.

## Prices

- terminio.ai: €0 – €19.99 a month · Pro Voice with phone assistant €129.99 · cancel monthly
- Dr. Flex: from €39 a month plus €3.99 per online booking · or a €99 flat rate for one calendar · €25 per extra calendar

## Honestly

Dr. Flex:
- With very few online bookings a month, the €39 Starter comes out cheaper than any subscription.
- WhatsApp and the VoiceAI voice assistant are built into the product, made for practices.
- German provider with a booking page of your own; patients book without a patient account.

terminio.ai:
- One price, however often people book. No €3.99 per booking, no 12 cents per message.
- Reminders by WhatsApp from your own number, unlimited in Pro and with no cost per message.
- €0 to start, unlimited practitioners in every plan, phone assistant included in Pro Voice.

## Switching

1. Set up your services Tap your industry, adjust the prefilled services, set durations and prices. Ten minutes, and the booking page is live.
2. Bring your patients Import your contacts and confirm existing appointments once by WhatsApp. From then on reminders go out from your number, with no price per message.
3. Swap the link Booking link on your Google profile, website and voicemail. Cancel Dr. Flex; until then both calendars run in parallel.

## Common questions

**What does Dr. Flex really cost?** The Starter costs €39 a month plus €3.99 per online booking. At 100 bookings a month that is €438 a month, about €5,256 a year. There is also a flat rate of €99 a month for one calendar, so €1,188 a year. There is no free plan. terminio.ai starts at €0 and Pro costs €19.99 a month, whatever the number of bookings.

**What does WhatsApp cost with Dr. Flex?** Dr. Flex sends messages by WhatsApp and charges 12 cents per message. With terminio.ai reminders go out from your own number with no cost per message: 5 a month on the free plan, unlimited on Pro.

**And the phone assistant?** Dr. Flex offers VoiceAI from €39 a month plus €0.89 per interaction, so on top of the subscription and again by usage. With terminio.ai the AI assistant with a German number is included in the Pro Voice plan at €129.99 a month, with no price per call. It gives no medical advice and hands anything urgent to the practice.

**What does a second practitioner cost?** With Dr. Flex every extra calendar costs €25 a month. With terminio.ai unlimited practitioners are included in every plan, the free one included.

**Do my patients need an account?** With neither. Dr. Flex lets patients book without a patient account, and so does terminio.ai: open the link, pick a service and a time, enter name and mobile number, done.

**Can I use Dr. Flex and terminio.ai in parallel?** Yes. Both calendars run independently; in terminio.ai you block the times Dr. Flex hands out until the contract ends. That way you can see in peace what you really pay per booking.


---

terminio.ai is online appointment booking for small businesses with WhatsApp reminders and an AI phone assistant, from €0 a month, hosted in the EU. Provider: terminio.ai UG (haftungsbeschränkt), Großschönau, Saxony, Germany.