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The Venture Codex

Heartfelt

Zimmerstraße 50, Berlin, 10888, Germany

Overview

HEARTFELT is Europe’s earliest-stage VC. They support and partner with the most pre-seed startups.

Total investments
43
Lead investments
3
Investments · 12mo
19
Active investors
3
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Investment portfolio

  • TaiSan

    Participated · Seed · Jul 2026

    TaiSan operates out of a Cambridge battery lab and develops next-generation sodium batteries it says are more efficient than existing sodium-ion and lithium-ion rivals. The company targets applications including electric bikes, scooters, vehicles and power tools. Founded and led by Sanzhar Taizhan, a former Kazakhstani chess champion, TaiSan has kept several breakthroughs in stealth while progressing its electrochemistry. Financially, the startup has raised €1.7M in pre-seed funding and has just closed a £4.65M seed round that includes a £700,000 Innovate UK grant. TaiSan plans to use the new capital to enhance battery performance and begin pilot testing with manufacturers. The company intends to bring its sodium-battery benefits to a mainstream audience.

  • Zelara

    Participated · Seed · Jun 2026

    Zelara develops an AI-native learning system for lifecycle marketing that continuously learns from individual customer interactions to determine the optimal message, channel, and timing. The platform operates on top of existing CRM and customer engagement systems so brands can retain strategic control while Zelara handles ongoing decision-making, execution, and learning. Founders Nikolas Schriefer and Björn Heckel built the company to move beyond campaign- and segment-based approaches toward per-customer optimisation. Zelara reported a demonstrated result with a leading European neobank, increasing customer reactivation by 66% without changing existing CRM infrastructure. The company plans to use its recent €3 million pre-seed raise to expand product capabilities across more touchpoints, grow the team, and pursue partnerships to drive commercial adoption. The article does not disclose revenue or broader user metrics.

  • ManaMind

    Participated · Seed · Apr 2026

    ManaMind develops autonomous AI agents that continuously play through games to detect bugs, generate actionable reports, and automate repetitive QA tasks. The company has built proprietary visual models tailored for virtual environments and positions gaming as its launch market. ManaMind has formed design partnerships with Included Games and Crazy Labs, indicating early commercial traction. The founders are Emil Kostadinov and Sabtain Ahmad and the company is based in London. ManaMind plans to expand its technical team and accelerate model development with proceeds from its $1.5M pre-seed round. Over time the company intends to broaden its autonomous testing layer beyond games into other software and robotics applications.

  • DOJO AI

    Participated · Seed · Apr 2026

    DOJO AI offers an agentic marketing platform centered on a proprietary "DOJO Graph" knowledge layer that builds a dynamic digital twin of a customer’s marketing operations and competitive environment. The system continuously ingests campaign, SEO and market data to enable specialized AI agents to execute decisions, manage workflows, generate content and optimize outcomes across the marketing stack. Since launching in 2024, the company reports 20% month-over-month growth and serves over 100 customers across the U.S. and U.K., including CoinDesk, Morningstar, Broadvoice, PensionBee and Refine Labs. Customers have reported measurable results such as a 40% reduction in customer acquisition costs, faster campaign launches and improved marketing efficiency. Pricing starts at $499 per month with no contracts required. DOJO AI plans to expand its multi-agent capabilities to handle more complex use cases and further enhance its continuous learning infrastructure to compound performance improvements.

  • VisioLab

    Participated · Series A · Apr 2026

    VisioLab offers an AI that recognizes food and beverages via camera—without barcodes or specialized hardware—and runs as an app on a standard Apple iPad paired with a compact Bluetooth payment terminal. The system identifies products within seconds, displays prices, and enables payment, with the company saying the full setup can be operational in under five minutes. VisioLab reports it processes around one million transactions per month and operates 43 systems in the Orlando Magic arena, covering nearly the entire stadium per the company. Its U.S. sports customers include NFL teams Atlanta Falcons and Carolina Panthers and MLS club Inter Miami, and it partners with global caterers Compass Group and Aramark. In Germany, roughly one in three university campuses uses the technology through student services, and the system is deployed in staff restaurants at DAX-listed corporations and companies in banking, insurance, and automotive sectors. The company plans to expand internationally and increase headcount to support growth in sports, corporate, and campus segments.

Team