Profile
Klim Falkenberg
Founder, PopApp
Klim Falkenberg is a founder and software engineer based in Barcelona, Spain. He founded PopApp, an AI‑powered app builder launched in January 2026 that creates production‑ready mobile apps. He previously co‑founded Trusty as CTO in 2025 and earlier co‑founded and led Maging Studio, delivering full‑stack products and large‑scale education‑tech projects, including VK digital lessons and the Edu Lab platform. He also built a React Native app for Unilever that controls a device over Bluetooth.
Current role is Founder at PopApp.
Earlier roles include Co-founder & CTO at Trusty and Co-founder / Lead at Maging Studio.
Career
Career history and operating roles assembled from public biographies and company records.
- Jan 2026 - PresentFounderCurrentFounderPopApp
- Feb 2025 - Dec 2025Co-founder & CTOFounderTTrustyFeb 2025 - Dec 2025Co-founder & CTOFounderTTrusty
- Jan 2017 - Feb 2025Co-founder / LeadFounderMMaging StudioJan 2017 - Feb 2025Co-founder / LeadFounderMMaging Studio
Sources
Underlying source material used to support the profile and portfolio entries.
Klim Falkenberg — Founder @ PopApp | AI App Builder
klim.me
“PopApp · Founder 01.2026 — Present · Barcelona”
linkedin.com
“Co-founder & CTO | Headline: Building Trusty | Peer-verified AI agent to solve fake reviews | Experience: Trusty Barcelona, Spain 2025-02-01 Built an AI-powered recommendation service based on trusted networks. Developed a React Native app with Apple OAuth, onboarding, push notifications, and a built-in messenger. Implemented contact import from LinkedIn, Instagram, and address book. Created LLM-based filtering and ranking using OpenAI/Perplexity APIs and embeddings, processing 100k+ contacts in under a minute. Built the backend on Supabase with Postgres, RLS, Edge Functions, and vector search. Co-founder & CTO at Maging Studio Remote / Barcelona, Spain 2024-05-01 2025-02-01 Built product features including referral systems, leagues, tournaments, duels, paid events, and wallet integrations”
German agritech startup Klim raises $22M to expand its ...
vestbee.com
“Nov 14, 2024 — Europe's largest bank, BNP Paribas, led the Series A round. Other investors include Earthshot Ventures, Rabobank, AgFunder, Norinchukin Bank,”