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onOffice alternative

onOffice vs VintAI — honest comparison

onOffice is the DACH market leader for broker software: since 2001, ~6,000 brokerages, 350+ employees, own AI Studio. VintAI is a custom-built AI CRM with a multilingual Maria AI assistant, code ownership, and 6-week money-back. Here are the real differences.

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Side-by-side comparison

Criterion onOffice VintAI
Business model SaaS (subscription) Custom build with code handover
Entry price (per user/month) €79 (enterprise pro), €99 (all-in) No per-user licence — flat rate
Setup fee Service fee €50/month up to 9 users €6,000–15,000 one-off (custom)
Running cost €79–99 × users + €50 + marketplace add-ons €250–600/month hosting + maintenance (flat)
Contract term 24 months minimum, then 12-month renewal None
Code ownership No (SaaS platform) Yes, source-code handover
Setup time / onboarding 3–6 weeks (per reviews) 3–4 weeks custom build
Languages (CRM UI) 30+ languages (DE, EN, FR, ES, IT confirmed; RU/TR not public) German, English, Russian native — Turkish on demand
First-party AI features AI Studio: text, email, image optim., virtual staging AI assistant (voice + chat), lead qualification, viewing booking
AI voice telephony Marketplace partner (e.g. "KI-Telefon-Agent") Native (ElevenLabs + Claude + Twilio in the product core)
Money-back / trial 7-day demo, then 24 months locked 6-week money-back
Contact model Service center + customer success manager Directly the developer (Michal Andrzejewski)
Portal connectors 150–180+ (industry maximum) Built per customer
DATEV interface Yes (industry exclusive) No (on request)
Multi-Listing Service Yes, internal for broker cooperation No
Owner Stefan Mantl (onOffice Holding AG, self-funded) Owner-operated (M. Andrzejewski)
Customers (as of 2026) ~6,000 brokerages, 35,000+ users in Europe 2 live (Berlin + Dubai), 4 in the pipeline

Where onOffice honestly wins

DACH market leader with a 24-year track record

On the market since 2001, ~6,000 brokerages, 350+ employees, reference cases at VON POLL, RE/MAX, Schürrer & Fleischer. If you're competing with established brands or your CEO needs to see a "safe choice with long experience", onOffice has an argument that a 2-customer studio doesn't offer.

DATEV-native accounting setup

onOffice is the only major DACH provider with a native DATEV interface for invoicing and commission accounting. If your tax advisor expects DATEV data and you want to do accounting inside the CRM, that's a material workflow advantage. Complemented by Multi-Listing Service for broker-to-broker cooperation.

AI Studio + portal depth

AI Studio is the deepest first-party AI in the DACH CRM market: AI Writer (listings), AI Assistant, AI Mail Composer in all plans; Image Optimizer and Virtual Staging in the top tiers. Plus: 150–180+ portal connectors — if you push inventory across the DACH portal landscape, that's the broadest available reach.

Where VintAI wins

Multilingual AI as the product core

Maria speaks German, English, and Russian natively — not via a 30-language translation setup, but as CRM logic and voice agent. Russian and Turkish are not in onOffice's public UI-language list. Real-customer reference: Aleksei Sukmanov / A StandArt Real Estate Berlin uses this daily for international buyers.

AI voice native, not a marketplace partner

onOffice offers AI Studio for text and images, but inbound voice telephony runs via marketplace partners ("KI-Telefon-Agent", bottimmo) — a third system between CRM and phone. VintAI integrates ElevenLabs + Twilio directly into Maria's logic — Maria knows your calendar, your listings, and each lead's language register in one system.

Code ownership + 6-week money-back

VintAI builds, then it's yours. Source code, documentation, data. No 24-month lock-in like onOffice — if after 6 weeks of live operation your team isn't seriously using the system, you get your money back. Plus: direct developer contact instead of a service-center + customer-success-manager layer.

When which?

Choose onOffice if…

  • You have 10+ brokers and need per-user SaaS with DATEV accounting
  • Your business runs deep in the ImmoScout24/Immowelt portal ecosystem
  • Your team is German/European-speaking only (DE, EN, FR, ES, IT is enough)
  • You want to use Multi-Listing Service for broker cooperation
  • You prefer an established platform with a 24-year track record
  • You accept 24-month lock-in and 3–6 weeks of onboarding

Choose VintAI if…

  • You work multilingually with DE/EN/RU or DE/TR clients
  • You want AI voice telephony as a product core, not a marketplace add-on
  • Code ownership & data control matter to you instead of 24-month SaaS
  • You're solo to ~5 brokers and the €50/month service fee is disproportionate
  • You want direct developer contact instead of a service-center layer
  • You value an honest 6-week money-back guarantee

FAQ on the comparison

Isn't VintAI more expensive than onOffice?
On setup, yes — onOffice starts at €79–99 per user/month + €50 service fee monthly; VintAI at €6,000–15,000 one-off + €250–600/month. But: at three broker seats over the 24-month minimum term you'd pay onOffice roughly €8,500 (3 × €79 × 24 + 24 × €50 + setup fee + marketplace add-ons + ImmoScout24 connector). VintAI is often cheaper at that point — and you own the system at the end. At 10+ seats the comparison flips — onOffice gets cheaper per head because the €50 service fee drops.
Which brokerage should choose onOffice over VintAI?
If you have 10+ brokers, need DATEV-native accounting setup, and want an established provider with a 24-year DACH market track record. Also if you're deep in the ImmoScout24/Immowelt portal ecosystem and exploit the 150+ portal connectors, or if industry standardization and Multi-Listing Service for broker cooperation matter more to you than AI voice telephony as a product core.
Which brokerage should choose VintAI over onOffice?
If you work multilingually with Russian- or Turkish-speaking clients (onOffice lists 30+ languages but Russian and Turkish are not publicly confirmed UI languages), if you want AI voice telephony as a native product core instead of a marketplace partner (KI-Telefon-Agent, bottimmo), if code ownership matters to you instead of 24-month SaaS lock-in, or if you're solo to ~5 brokers and the €50/month service fee is disproportionately heavy.
Doesn't onOffice have its own AI?
Yes — onOffice AI Studio exists since 2024 and is the deepest first-party AI in the DACH broker-software market. AI Writer (listing generation), AI Assistant (knowledge-base chatbot), AI Mail Composer are included in all plans. AI Agent for property management, Image Optimizer (€0.30 per generated variant), and Virtual Staging are only in enterprise all-in (€99/user/month). But: AI voice agents for inbound calls are not an onOffice product — those run via marketplace partners like KI-Telefon-Agent or bottimmo. With VintAI, voice telephony is the product core (ElevenLabs + Twilio integrated directly into CRM logic), not a third-party plugin.
How long does onOffice onboarding actually take?
3–6 weeks per public reviews (trusted.de, OMR Reviews, Capterra DE). onOffice is an all-in-one platform with deep functionality — contact mgmt, listings, portals, marketing, DATEV accounting, Multi-Listing Service. Reviewers cite complexity as the main weakness. VintAI builds a tailored system for you in 3–4 weeks; similar duration, but you get exactly the logic you need instead of a platform you still have to learn.
What happens if I want to leave VintAI later?
You keep the source code, documentation, and all your data. You can hand it to any other developer or migrate to another CRM provider. With onOffice, leaving means you can cancel after the 24-month minimum (3 months' notice, otherwise auto-renews for 12 months) — data is exportable via OpenImmo, but the platform stays property of onOffice.
Can I migrate data from onOffice to VintAI?
Yes. onOffice supports OpenImmo export and has a public REST API (the whole marketplace is built on it). We import contacts, listings, pipeline status, and historical conversations once during setup. The DATEV accounting interface is not directly transferable — if you need it, that would be an explicit build item (or a sign that onOffice fits better).

Let's honestly check whether VintAI fits you

30 minutes on the phone or Zoom. If onOffice fits your setup better — larger team, DATEV accounting, German-market focus — we'll tell you that honestly too.

Book a first call

As of 2026. All prices and features are based on public sources (onoffice.com, en.onoffice.com, onOffice AI Studio, trusted.de, OMR Reviews) and independent reviews. We update this page quarterly. Spotted a mistake? Email hello@vintai.de — we'll correct it.