Iisii Solutions Gmbh

What Iisii Solutions Gmbh does

Iisii Solutions GmbH is a German software company founded in 2019 and headquartered in Iffeldorf, near Munich, operating as a privately held GmbH with two managing directors, Horst Schön and Dr. Anja Schlenz. The company develops O-TIS, a real-time online appointment booking platform that integrates bidirectionally with EVIDENT's TIS practice management software used by German dental practices. O-TIS writes appointments directly into the TIS calendar without manual staff intervention, distinguishes between new and returning patients, recognizes family and referring-physician relationships, and supports treatment-context-aware slot assignment, capabilities that distinguish it from standard read-only online booking calendars.

The core product is O-TIS 2.0, launched in November 2023 with a modernized user interface, patient pre-screening, automatic document delivery, and self-service rescheduling. The platform is sold in a Professional tier (all modules) with additional add-on modules for multilingual booking, digital business cards, capacity optimization, document exchange, and a referring-physician portal. Complementary offerings include the O-TIS mobile app (free for O-TIS subscribers), O-TIS SMS billed per message with no monthly base fee, Whereby-powered video consultations, and the DokFee suite covering an AI-powered answering machine (Voice), online anamnesis forms, a practice dashboard, and patient chat with document exchange.

Revenue is generated primarily through monthly subscriptions for O-TIS 2.0 Professional and module add-ons, supplemented by usage-based pay-per-SMS billing, with pricing generally quote-based. The company operates a sales-led go-to-market using its corporate website, downloadable product PDFs, video content, and personalized consultation appointments (including trials in a model practice), and benefits from EVIDENT acting as a reseller and recommended provider. The customer base is restricted to dental practices in Germany, and no external investment, headcount, or revenue figures are disclosed.

Name

Iisii Solutions Gmbh

Legal name

iisii solutions GmbH

Website

https://iisii.de

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

Iisii Solutions GmbH is a German software company that develops O-TIS, a real-time online appointment booking platform exclusively integrated with EVIDENT's TIS practice management software, serving German dental practices with subscription, modular add-ons, and complementary communication tools.

Ownership category

akta.pro rank

Product category

Dental Practice Management Software

akta.pro primary industry

Patient Intake, Digital Registration & eForms (HLACAEAF)

Keywords

• Online appointment booking
• Dental practice software
• Patient scheduling system
• Practice management integration
• SMS patient reminders

Headquarters

HQ city

Iffeldorf

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Operations, Marketing or Sales

Revenue model

1. O-TIS 2.0 Subscription: Monthly subscription for the O-TIS online appointment booking platform. Customers can choose between Professional (all modules) or select individual premium modules including multilingual support, digital business cards, capacity optimization, document exchange, and referring physician features.
2. SMS Messaging Service: Pay-per-SMS messaging service for patient communications. No monthly base fee; practices pay only for SMS messages sent. No contract term required; subscription can be changed at any time.
3. O-TIS App Subscription: O-TIS App is free for existing O-TIS subscribers. For practices using only TIS without O-TIS, the app costs €10 per month per TIS installation plus a one-time €150 installation fee.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

Iisii Solutions GmbH develops and sells O-TIS 2.0, a real-time online appointment booking system that integrates directly with the EVIDENT TIS practice management software used by dental practices. The platform allows dental patients to search and book available appointment slots online 24/7, with bookings automatically reflected in the practice's EVIDENT TIS calendar, and bundles patient communication features such as SMS/email reminders, video consultation, patient chat, and online intake forms.

Product overview

Iisii Solutions Gmbh's product portfolio centers on O-TIS 2.0, a cloud-based real-time online appointment booking platform for dental practices, fully integrated with the EVIDENT TIS (Termin- und Informationsverwaltungssystem) practice management system. The core O-TIS 2.0 platform is offered in Professional and Premium tiers and provides 24/7 patient booking, automated reminders (email/SMS), and intelligent appointment slot recommendation. Add-on modules include: Mehrsprachigkeit (multi-language booking), Digitale Visitenkarte (digital business card), Auslastungsoptimierung (scheduling optimization), Dokumentenaustausch & Online-Formulare (document exchange), and Zuweiser (referrer booking portal). Supplementary services include O-TIS SMS (per-SMS billing, no monthly fee), Videosprechstunde (Whereby-powered video consultations), Patientenchat (secure messaging), and the DokFee suite comprising Dashboard (practice management), Voice (AI answering machine with call transcription), and Anamnese & Online Formulare (digital patient intake). The O-TIS App provides mobile access to TIS appointments for practice staff via the O-TIS Connect on-premise connector.

Differentiator

Problem solved

Functional benefit

Brands

• O-TIS: Official real-time online appointment scheduling system for EVIDENT TIS, enabling 24/7 patient appointment booking integrated directly with practice calendars.
• O-TIS SMS
• O-TIS App
• DokFee

Products and services

• O-TIS 2.0 Real-time online appointment booking platform that integrates with EVIDENT TIS practice management software, allowing dental patients to search and book available slots 24/7 with bookings automatically appearing in the practice's calendar. Includes branded practice websites, multilingual pages, and modular add-on features.
• O-TIS SMS Automated SMS reminder service for appointment confirmations and notifications to dental patients, integrated with the O-TIS booking platform.
• O-TIS App Patient-facing mobile application available on iOS and Android that enables patients to search and book appointments, manage appointments, and interact with their dental practice through the O-TIS platform.
• Videosprechstunde (Video Consultation) Video consultation module that allows dental practices to conduct remote consultations with patients, built to gematik specifications for compliant teleconsultation.
• Patientenchat und Dokumentenaustausch Secure chat module that allows dental practices to communicate with patients and exchange documents electronically.
• DokFee Suite (Dashboard, Voice, Anamnese) Suite of digital tools for dental practices comprising DokFee Dashboard, DokFee Voice (voice assistant), and DokFee Anamnese (online patient intake/anamnesis forms).

Quantifiable outcome

• 99.98% SLA availability (98% annual average guaranteed)
• +2 more outcomes

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability4 records

Feature5 records

Partnerships

Two partnerships are on record, tiered core and minor.

• EVIDENTcoreStrategic or Co-development PartnerExclusive long-term partnership for O-TIS online appointment booking system. EVIDENT develops and provides the TIS practice management software which O-TIS integrates with. O-TIS is the officially authorized real-time appointment booking system recommended by EVIDENT for TIS users. Joint product development ensures continued alignment with TIS updates and features.
• Adler ProMedia GmbHminorImplementation/ SI/ Consulting PartnerAdvertising agency contracted for website development and administration. Has access to technical website data under a data processing agreement.

Scale indicators1 record

Recent moves6 records

Expansion highlights6 records

Direct peers

• Doctolib: Dominant online appointment booking platform for medical and dental practices in Germany and France. Direct competitor to O-TIS in providing 24/7 patient booking, automated reminders, and patient-facing scheduling — though Doctolib is multi-PMS and far larger scale.
• Doctoralia (Docplanner): Healthcare booking platform under the Docplanner umbrella, serving German doctors and dentists with online appointment booking and patient reviews. Comparable to O-TIS in core booking functionality, with broader marketing ecosystem integration.
• samedi GmbH: Berlin-based provider of online appointment booking and practice management tools for German medical practices. Overlaps directly with O-TIS on patient-facing scheduling and integrates with multiple practice management systems.
• jameda (Docplanner Group): German healthcare appointment booking and doctor search platform owned by Docplanner. Competes directly with O-TIS in enabling online appointment scheduling for German medical and dental practices, with broader marketing/patient-acquisition tooling.
• Dampsoft (DAK GmbH): German dental practice management software vendor offering DS-WIN/Z1 with built-in appointment booking. Directly comparable as a competing dental software provider, and could become a competitor if it develops a third-party booking layer like O-TIS.

Broad incumbents

• Weave Communications: Public US-based patient communication and engagement platform heavily focused on dental and specialty practices. Overlaps with iisii on patient messaging, online scheduling, and phone system integrations, though at significantly larger scale.
• Solutionreach: US-based patient engagement platform purpose-built for dental and optometry practices, offering appointment reminders, online scheduling, recall, and two-way patient communication. Comparable feature set to O-TIS + DokFee SMS/Chat, but at much larger scale and different geography.
• CompuGroup Medical (CGM): One of Europe's largest healthcare IT vendors with a significant dental software portfolio (including CGM Dentalsysteme). Operates broadly across practice management, billing, and patient engagement — overlapping with iisii but as part of a much wider healthcare software portfolio.

Regional players

• Doctena: European online medical appointment booking platform operating primarily in DACH, Benelux, and other EU markets. Comparable offering to O-TIS in patient-facing booking and SMS reminders but focused on multi-country rollouts rather than single PMS integration depth.

Emerging players

• medflex: German healthcare communication platform offering video consultations, messaging, and digital intake for medical practices. Emerging comparable to iisii's DokFee suite (Chat, Anamnese, Videosprechstunde), targeting the same German healthcare digitalization wave.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/iisii-solutions-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Iisii Solutions Gmbh