HalloPetra Alternative for AI Phone Calls & Appointment Booking

Meet Zeeg, The AI Voice Agent That Does More for Less

Zeeg is Europe's leading AI phone assistant and appointment scheduling software in one solution—and a more flexible and complete alternative to HalloPetra. It answers calls, calls back proactively, qualifies and books appointments directly in the conversation. For every industry, GDPR-compliant.
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4.9/5 ⭐⭐⭐⭐⭐

Over 20.000 individuals and companies trust Zeeg

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Why Zeeg

Book by Phone or Online

Customers can book through Zeeg over the phone, 24/7, or directly online, on a scheduling page that's also open around the clock and synced straight to your calendar.
Woman confirming a booking on a tablet next to a calendar preview
Healthcare assistant on a call next to a calendar booking preview

Inbound and Outbound Calls, Not Just Answering

Zeeg's AI phone assistant doesn't just pick up. It also calls out: maintenance reminders, quote follow-ups, or job confirmations. All without lifting the phone.

Cheaper at Every Tier

Zeeg's AI minutes go as low as €0.08/min, dropping the more you use, and making Zeeg a cheaper alternative to HalloPetra at every comparable tier.
Availability heatmap and toggle switches in the Zeeg booking dashboard
Anruf wird an ein bestimmtes Teammitglied unter mehreren weitergeleitet

Call Routing and Round-Robin Scheduling

Route callers to the right team member automatically based on your custom rules, or spread them fairly across your whole team.

Built to Fit Exactly How You Work

Set your own routing rules, choose your assistant's voice, and write custom greetings for inbound and outbound calls. Add a knowledge base so your assistant answers with your own business information, all from one dashboard.
Zoom, Google Calendar, Meet, WhatsApp, Teams, Apple, and Skype icons

GDPR-Compliant, Hosted in Germany

Your call data and records never leave the EU. Zeeg is fully GDPR-compliant, with all servers hosted in Germany, so every record stays under German and EU data protection law.
Features

The Most Advanced AI Voice Agent

Here's some of the main features that you can get today.

24/7 AI Phone Receptionist

Your AI voice agent answers every call, has a natural conversation, and takes the next action automatically.

Outbound Calls

Launch bulk calling campaigns to re-engage leads, win back customers, or resolve issues at scale. Full outbound call automation.

Phone Booking

Zeeg answers and makes calls, has a natural conversation, offers availability slots, and books the appointment straight into your calendar of choice.

Smart Routing

Set your own qualifying questions and send each caller straight to the right person or team. Fully customizable routing rules.

Live Call Transfer

Set your own conditions for when a call gets handed off, and Zeeg transfers it live to the right teammate.

Calendar Integration

Connect Google, Outlook, Office 365, Exchange, Apple Calendar, or Proton, and keep every booking in sync.

Voicemail Handling

Choose how your assistant treats voicemail: ignore it, hang up, or leave a custom message.

Workflows

Automate reminders, follow-ups, and confirmations by email and SMS, so fewer appointments get forgotten.

Knowledge Base

Attach your own documents so your assistant answers with real information, not a generic script.
A detailed comparison

Zeeg vs HalloPetra

Zeeg vs HalloPetra Comparison
FeatureZeegHalloPetra
Functions
AI Phone Answering
Native Appointment Booking
Outbound / Proactive Calling Zeeg Only Better suited to inbound-only use cases
Fair Team Distribution (Round-Robin) Zeeg Only Routes to a specific recognized employee, not evenly across the team
Calendar Integrations Zeeg: Broader Google, Outlook, Office 365, Exchange, Apple Calendar, Proton Google and Outlook only
Voice & Prompt Customization Zeeg: More Flexible Choose voice, write custom greetings, edit full prompt One fixed voice, limited customization
Online Scheduling Pages Limited / call-triggered
Pricing
Cheapest Available Rate €0.08/min ~€0.71/min
Cost per Minute, Entry Tiers Cheaper
  • €0.196/min — €49/mo, 250 min
  • €0.132/min — €99/mo, 750 min
  • €0.128/min — €199/mo, 1,550 min
More expensive
  • €0.99/min — €99/mo, 100 min
  • ~€0.80/min — €199/mo, 250 min
Cost per Minute, Scale Tiers Cheaper
  • €0.120/min — €299/mo, 2,500 min
  • €0.113/min — €499/mo, 4,400 min
  • €0.111/min — €999/mo, 9,000 min
  • €0.08/min — Custom, 10,000+ min
More expensive
  • ~€0.71/min — €499/mo, 700 min
  • No higher published tier
Compliance & Hosting
GDPR Compliance
EU Data Hosting Germany Germany
HalloPetra vs Zeeg

Quick take

HalloPetra is a focused AI phone assistant built specifically for trades businesses, with deep vocabulary for HVAC, electrical, and refrigeration work, and native appointment booking with SMS confirmation. But the gaps show up fast once you look closer: no outbound calling, calendar support limited to Google and Outlook, one fixed voice with little room to adjust, and per-minute pricing that runs 3 to 5 times higher than Zeeg's, even comparing HalloPetra's best rate against Zeeg's worst.

Zeeg closes every one of those gaps. Your AI voice agent handles inbound and outbound calls, calls can get routed to one employee or distributed fairly across your team, you have more calendar tools supported natively, and you can fully customize your assistant's voice, greeting, and prompts yourself in minutes. And you can do all that for less money.

Zeeg verdict:
The right choice for teams that want to automate inbound and outbound calls for less money, with a more complete tool and broader calendar support.

HalloPetra verdict: A reasonable choice for trades businesses that want a product built specifically around their vocabulary and workflows, don't need outbound calling or calendar flexibility beyond Google/Outlook, and are comfortable paying more.
Integrations

Connect with your favorite apps

Zeeg integrates with your business tools for the most advanced scheduling workflows.
Google Calendar logo

Google Calendar

Microsoft Outlook logo

Outlook Calendar

Microsoft Office logo

Office 365 Calendar

Microsoft Exchange logo

Microsoft Exchange

Apple logo

iCloud Calendar

Google Meet logo

Google Meet

Zoom logo

Zoom

Microsoft Team logo

Microsoft Teams

Skype logo

Skype

PayPal logo

PayPal

Stripe logo

Stripe

HubSpot logo

HubSpot

Pipedrive

Salesforce

Google Analytics logo

Google Analytics

Meta logo

Meta Pixel

Webhook icon

Webhooks

Okta logo

Okta

SSO icon

SSO / SCIM

Webex logo

Webex

Whereby logo

Whereby

Zapier logo

Zapier

Success stories from our users

See how teams save 10+ hours weekly
by combining scheduling, forms, and digital presence with Zeeg

Frequently asked questions

What's the difference between Zeeg and HalloPetra?
Zeeg does more with every call. You get outbound calling in addition to inbound, appointments distributed fairly across your whole team with round-robin, six calendar integrations instead of two, and per-minute pricing that beats HalloPetra at every tier, all without being locked into one industry.
Is HalloPetra only for trades businesses?
Yes. HalloPetra's vocabulary, workflows, and pricing are all built specifically around trades work. If you also need outbound calling, fair call distribution across a bigger team, or calendar support beyond Google and Outlook, Zeeg covers all of that natively, in any industry.
Is there a good HalloPetra alternative for businesses outside trades?
Yes. Zeeg works identically across every industry, not just trades, with the same native booking, outbound calling, and round-robin distribution HalloPetra doesn't offer.
Can Zeeg distribute calls fairly across a team?
Yes. Zeeg supports round-robin scheduling, distributing appointments evenly across your team based on rules you set. HalloPetra recognizes and routes to specific known employees, but doesn't offer fair, balanced distribution across the whole team.
Can I customize my AI assistant's voice, greeting, and prompts?
Yes. Zeeg lets you choose your assistant's voice, write separate greetings for inbound and outbound calls, and edit the full prompt yourself, with templates to start from. HalloPetra offers one fixed female voice with much less room to adjust.
Does Zeeg automatically retry calls that go unanswered?
Yes. If an outbound call goes unanswered or hits voicemail, Zeeg can automatically retry at the right time, timezone-aware, so no follow-up gets missed. You also choose exactly how voicemail is handled: skip it, hang up, or leave a custom message.
Is HalloPetra or Zeeg cheaper?
Zeeg is cheaper at every comparable tier. Even Zeeg's highest per-minute rate (€0.196/min at low volume) beats HalloPetra's lowest available rate (about €0.71/min at their highest tier), and Zeeg's rate keeps dropping as you scale, down to €0.08/min.
Which calendars does each tool connect to?
Zeeg connects to Google Calendar, Outlook, Office 365, Exchange, Apple Calendar, and Proton. HalloPetra connects to Google and Outlook only.

Meet Zeeg,
The AI Voice Agent That Does More for Less

Get your free 14-day trial today, no card details needed.