Development
Web app, website, iOS and Android – complete platforms from a single source. We build, publish and run them ourselves, on servers in Europe.
DevelopmentTassilo and Marc
Our own platforms
Every product combines a web app, website and native apps – built and run by us, hosted in Germany. What we learn here goes into every client project.
Training & education
Complete digital solution for Module 95 & accelerated initial qualification (BGQ) — from online booking and QR check-in to the learning portal, invoicing and the KBA-compliant XML export.
Angular · Node.js · Astro · Swift · Kotlin · Redis · PostgreSQL · Stripe · Mailjet · JWT · S3
View product – BKF Manager
Mobility & leasing
Keep your leasing mileage in view — forecast with a traffic light until the end of the contract, automatic odometer readings for Tesla and subscription billing via the App Store or Stripe.
Swift · SwiftUI · SwiftData · Fastify · TypeScript · PostgreSQL · Next.js · Tailwind CSS · StoreKit 2 · Tesla Fleet API
View product – LeasePilot
Fitness & training
All-in-one fitness app — strength training, HIIT and run tracking with Apple Watch, voice coach and RunTurf gamification.
Swift · SwiftUI · WatchKit · ActivityKit · HealthKit · StoreKit 2 · Node.js · Express.js · MongoDB · CoreLocation · APNs · JWT
View product – NOXA
Tactical event operations
Multi-tenant SaaS for tactical simulation events — airsoft, paintball and MilSim with a live situation picture, our own vector maps, a scoring engine and on-site verification.
Node.js · Express.js · PostgreSQL · EJS · MapLibre GL · Swift · SwiftUI · Kotlin · Jetpack Compose · Stripe · S3
View product – TactioWorkshop
What we work with ourselves and what we're currently trying out – prototypes, open source and tools for our operations.
Internal tool
Ayonto UG's central company dashboard — domains, servers, DNS, CDN, email, customers and invoices in a single monitoring and management interface.
Customer portal
The customer portal for Ayonto projects — status, documents, contract acceptance by digital signature, questionnaire and queries in one place.
In-house development
Ayonto UG's headless CMS — Payload CMS 3 and Next.js 16 in one app: admin, website and API from a single deployment.
Open source
@-mentions for Microsoft Power Apps and Dataverse — a reusable field control that assigns every mention unambiguously to one person.
Proof of concept
iOS SIP telephony app with push wakeup via OpenSIPS mid_registrar — two PoCs decide on product development.
R&D
GPT-powered travel assistant with hotel suggestions via Google Places — React/Next.js chat interface.
Process
Clear steps, regular demos and a team that looks after your product after the launch, too.
We understand your goal, clarify scope and requirements and tell you openly how we can help.
We plan the platform, apps and interfaces together with you – with clear milestones.
Regular demos instead of a black box: you see the progress and give feedback along the way.
We take your product live, into the app stores, and run it on servers in Europe.
DevelopmentTassilo and Marc
FAQ
About development, technology and working together.
We don't build individual apps but complete products: web app, website, iOS and Android app from a single source. And we run them, too – hosting, monitoring, updates and publishing in the App Store and on Google Play.
Yes. BKF Manager, LeasePilot, NOXA and Tactio are our own platforms – we develop and run them ourselves. We only show client projects with our clients' approval.
Tassilo and Marc develop themselves – you talk directly to the people who build your software.
Frontends: React, Angular, Next.js and Astro. Backends: Node.js, Express and Fastify. Mobile: Swift/SwiftUI for iOS and Kotlin/Jetpack Compose for Android. Databases: PostgreSQL, MongoDB, MySQL and Redis. Infrastructure: Docker on servers in Europe.
That depends on the scope. An MVP of a single platform can be ready in 4–8 weeks; a complete product with a web app, iOS and Android usually takes 4–9 months. We work in sprints with regular demos.
Yes. We support existing development teams as full-stack reinforcement, for individual modules such as iOS or Android, with technical consulting or for platform extensions.
Tell us what you have in mind – Tassilo and Ricardo will get back to you personally. The initial call is free and without obligation.
ayonto · Berlin-Lichtenberg
