Most platforms overlook invoicing—until compliance issues and lost revenue become a problem. Tina Assistant wanted a seamless, built-in invoicing solution to stay ahead. Here’s how they made the right choice—and how you can, too.4o

Tina Assistant Industry: Mental Health About: Tina Assistant is a digital platform designed to support therapists and mental health professionals by automating administrative tasks, streamlining workflows, and enhancing patient care. Type: B2B Website: https://tina-assistant.com/

Key results

Error Reduction & Compliance

Time & Cost Savings

Automated Invoicing

Increased Platform Value

 

Building an invoicing solution in-house wasn’t practical—it would take years and huge resources. Tina Assistant needed an API that was compliant, scalable, and brand-friendly. The challenge? Finding the right solution that fit their business model. Here’s how they did it—and why the right invoicing API can be a game-changer for your platform.

This is how they made the right choice—and how you can, too:

Get To Know Tina Assistant

Tina Assistant’s Plan To Become the One-Stop Shop

Challenge With Choosing an Invoicing API

The Solution

The Results

Integrate Invoicing Feature In A Week

 

 

Get To Know Tina Assistant

TINA Assistant is a comprehensive digital platform designed to support therapists and mental health professionals by automating administrative tasks, streamlining workflows, and enhancing patient care. Developed by Centrum Cognitio d.o.o., a startup founded by experienced therapists, TINA offers a suite of tools tailored to the unique needs of therapy practices.

Key Features:

AI-Powered Support: Automates reports, provides treatment recommendations, and offers an intelligent knowledge library with evidence-based resources.

Efficient Note-Taking: Enables quick and accurate session notes for better record-keeping.

Seamless Scheduling: Prevents conflicts, automates bookings, and sends SMS/email reminders.

Integrated Billing & Payments: Handles invoicing and payments effortlessly, ensuring tax compliance.

Comprehensive Client Management: Centralizes client data, notes, and session history in one secure place.

Role-Based Access Control: Provides team members with tailored access for security and efficiency.

Privacy & Security First: AI models are hosted on secure servers, ensuring data remains private and protected with end-to-end encryption and AWS-backed infrastructure.

 

 

Tina Assistant’s Plan To Become the One-Stop Shop

Tina Assistant's mission is to enhance therapy efficiency and effectiveness by leveraging advanced technology while maintaining high professional and ethical standards and ensuring legal compliance. Their goal is to eliminate as much manual work as possible for therapists, allowing them to focus on their patients instead of administrative tasks.

They already provide core features such as:

Scheduling

Meeting notes

Patient information management

Role-based access control

However, running a therapy business involves much more than just patient management—there are hidden backend processes that consume time, focus, and money. One of the biggest yet overlooked burdens is invoicing.

Why Invoicing Matters for Therapists:

E-invoicing is becoming mandatory in many countries, with many businesses already transitioning to digital invoicing.

Manual invoicing is time-consuming, costly, and prone to errors—leading to compliance issues, fines, and wasted resources.

By integrating an invoicing solution, Tina Assistant would:

Automate invoicing to save time and reduce costs.

Eliminate human errors that lead to lost revenue or penalties.

Ensure compliance with mandatory countries e-invoicing regulations.

Increase customer loyalty by offering a seamless, all-in-one solution.

Attract new clients by providing an essential tool that many competitors lack.

 

 

Challenge With Choosing an Invoicing API

Building an invoicing API in-house would have taken years due to complex country-specific regulations and high developer costs. With e-invoicing becoming mandatory in many countries and rapid adoption worldwide, integrating a third-party solution was the smarter choice.

Key Selection Criteria:

Multitenancy – Allowed both Tina Assistant and its clients to use the same invoicing system, while ensuring data security and separation.

White-Labeling – Maintaining brand trust was critical. A third-party add-on might create doubts, while seamless white-labeling ensured invoicing felt like a native feature.

Security & Compliance – Handling sensitive therapist data required GDPR compliance, strict security standards, and strong integration support.

Global Compliance – The API needed to support cross-border invoicing, accommodate varied regulations, and scale for future expansion.

Reliability & Credibility – A trusted provider with proven stability, regulatory expertise, and years of experience was essential to avoid unreliable solutions.

Customization – Clients needed branded invoices with their own logos and colors. A user-friendly API with an intuitive UI added extra value.

 

 

The Solution

They chose Space Invoices’ Invoicing API because it provided all the essential features, including white-label support, specifically designed for upselling and enhancing platform services for their clients. With comprehensive documentation and responsive support, Tina Assistant integrated the API within weeks—worry-free, knowing it was fully GDPR-compliant and perfectly secure.

This allowed them to:

Test the system and ensure smooth functionality.

Accurately predict costs with Space Invoices’ transparent pricing.

Seamlessly upsell or bundle invoicing as a service, thanks to Space Invoices’ API, built specifically for platforms.

 

 

The Results

The credibility of TINA Assistant is reinforced by its development team, which includes licensed psychologists and therapists with over a decade of experience. Their firsthand understanding of the challenges in therapy practices has directly informed the platform's design and functionality. Additionally, TINA has received recognition as one of Vestbee's "100 Must-Watch European Startups of 2024," underscoring its innovative approach in the mental health sector.

 

 

Integrate Invoicing Feature In A Week

Are you a therapist’ support platform, looking to expand your services with invoicing? Whether you want to offer more value to your clients or even upsell them, you’re in the right place. With Space Invoices' Invoicing API, you can:

Use one API for current and future global tax and invoicing compliance.

Support and upsell your clients worldwide, creating a new revenue stream.

Ensure all invoices are archived and successfully reported to regulatory institutions.

Become a one-stop shop for current and future clients.

Streamline processes and eliminate manual errors, saving both time and money.

Have questions about invoicing features for your platform?

We’re ready to help.