Apps that work today.
The apps that have been built and are used in the real world. Each one was designed around the job it serves.
Custom apps for businesses
The apps on this page were designed and developed by kos-tech as custom solutions: PWA and Android apps for field crews, warehouses, appointments, apartment buildings, municipalities and local communities, as well as Windows apps.
Each app is written around the job it serves, with real code, offline operation and push notifications where needed. Browse the projects below or send me your idea.
ArborCare
Field app for arborists: job assignments, photos, notes and invoicing.
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Insurance Policy Tracker
Full control: reminders, payment history and all your coverage on a single screen.
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Municipal App
Digital problem reporting for the Municipality, with an admin dashboard.
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Apothema: Inventory Management
100% local operation, with no server, subscription or ads. Barcode scanning with the phone camera, even without internet.
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Our Market
Free app for offering services, sales and donations in Eretria and the surrounding villages.
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Booking app
A simple appointment and booking app for small businesses: hairdressers, offices, clinics.
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Trofologio
A nutrition planning tool for trainers, dietitians and anyone who wants to track their diet systematically.
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Koinochrista +
Apartment building management for owners and managers: common expenses, rents and debts in one place, with no paper and notebooks.
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Aluminium Shutter Calculator
A dimension calculation app, available for Windows and Android.
Learn moreFrequently asked questions
What is a custom app for a business?
An app built around your own work: field crew management, inventory, appointments, policies or reporting to a municipality. It is real code, not ready-made templates.
What is a PWA?
A PWA (Progressive Web App) opens from the browser, installs on the phone like a regular app and can work without internet and send notifications.
Do the apps work without internet?
Where needed, yes. For example Apothema runs 100% locally on the device, with no server.
Do you build apps for Android and Windows?
Yes. Besides PWAs we build Android apps and Windows apps, such as the aluminium shutter calculator.
How do I request an app?
Send your idea to info@kos-tech.eu and I will get back to you.
Got an idea?
Tell me about it.
For an app or a website, drop me a couple of lines and I will reply.