Custom Mobile App Development for iOS, Android & B2B Platforms
We design and build iOS and Android apps connected to your existing systems — from concept to App Store and Google Play launch, delivered by one team
70+
successful projects
9 years
in custom software development
Full ownership
code & store accounts
Customer apps ✦ Employee apps ✦ Driver apps ✦ B2B portals ✦ Marketplace apps ✦ AI-enabled mobile products ✦
Customer apps ✦ Employee apps ✦ Driver apps ✦ B2B portals ✦ Marketplace apps ✦ AI-enabled mobile products ✦
What do you get?
What types of mobile apps we build
Customer apps
Ordering, booking, payments, loyalty programs, and customer communication
Employee and field apps
Apps for drivers, warehouse teams, inspectors, and sales reps
B2B partner platforms
Systems for distributors, dealers, franchise networks, and corporate clients
Marketplace and eCommerce apps
Catalogs, carts, delivery workflows, and order tracking
AI assistants, document recognition, and workflow automation
AI-enabled mobile products
Trusted by
How we build mobile apps
Discovery and scope
01
UX/UI and architecture
02
Development
03
QA and release
Business goals, workflows, integrations, and user roles
User flows, interfaces, and system architecture
iOS, Android, backend, APIs, and integrations
Testing on real devices and App Store / Google Play launch
04
Support and scaling
Monitoring, improvements, and future releases
05
What they say about us
All problems were resolved in a timely and professional manner.
Sailet successfully created a functional website and guided the client through every stage of the project, as well as providing training to ensure the project's success. The team scheduled meetings to provide progress updates and reports, demonstrating a transparent and smooth workflow. They were accessible and responsive.
Sailet successfully created a functional website and guided the client through every stage of the project, as well as providing training to ensure the project's success. The team scheduled meetings to provide progress updates and reports, demonstrating a transparent and smooth workflow. They were accessible and responsive.
I appreciated their readiness to solve all our problems, regardless of complexity
The client praised the website for meeting their needs in terms of functionality and efficiency. Flexible and client-oriented, Sailet communicated effectively and quickly resolved all issues and concerns. They leveraged their expertise to provide optimal solutions to problems of any complexity.
The client praised the website for meeting their needs in terms of functionality and efficiency. Flexible and client-oriented, Sailet communicated effectively and quickly resolved all issues and concerns. They leveraged their expertise to provide optimal solutions to problems of any complexity.
Their team completed all the work in a short time and made all revisions as quickly as possible
Thanks to Sailet, the company was able to improve its digital presence and make its crypto project more visible. The team was very creative and flexible, and internal stakeholders were particularly impressed with their innovative approach to the design process.
Thanks to Sailet, the company was able to improve its digital presence and make its crypto project more visible. The team was very creative and flexible, and internal stakeholders were particularly impressed with their innovative approach to the design process.
The client gained 70,000 new contacts — a 50% increase year-over-year. Conversion rate reached 30%. The team communicated consistently and delivered on all commitment
Technologies we use
Frequently Asked Questions
Five stages: define scope → design → develop → test → release. You review and approve at each stage
A simple MVP takes around 8–12 weeks. Complex apps with integrations take longer. After discovery we provide a roadmap with timeline
We start with a discovery call to understand your workflows and goals. Have documentation? We'll review it
We connect to your CRM, ERP, or custom API. Update data in your backend — it reflects in the app instantly
3 months of monitoring and bug fixes — included. Further support is available under a separate agreement
Full ownership. No vendor lock-in.
Source code, store accounts, documentation, and infrastructure access — all yours, as defined in the contract
Source code, store accounts, documentation, and infrastructure access — all yours, as defined in the contract
We design and build mobile apps for clients across Europe, including the Netherlands, Germany, Belgium, and the wider EU — as well as the UK and North America. All communication happens in English, over video calls and shared project tools, no on-site presence required. Apps are published under your own App Store and Google Play developer accounts, so you keep full control regardless of where your business is registered.
Custom Mobile App Development Services for Businesses in Europe
Sailet is a custom mobile app development company that builds iOS and Android apps for customer engagement, field operations, B2B partner networks, and marketplace platforms for businesses across Europe, including the Netherlands. Instead of building a generic app from a template, we design mobile products around your existing workflows and connect them directly to your CRM, ERP, or internal systems, so data stays accurate in both directions.
Our mobile app development process starts with a discovery call, where we map your business goals, user roles, and required integrations. From there, our team designs the UX/UI and system architecture, builds native or cross-platform apps for iOS and Android, connects them to your backend, APIs, and payment providers — including Stripe and Mollie — and tests everything on real devices before submitting to the App Store and Google Play. Every project includes three months of post-launch monitoring and bug fixes at no extra cost.
We build customer apps for ordering, booking, and loyalty programs; employee and field apps for drivers, warehouse teams, and sales reps; B2B partner platforms for distributors and franchise networks; and marketplace apps with catalogs, cart, and delivery tracking. AI-enabled features — document recognition, workflow automation, and smart assistants — can be built into any of these app types.
Every app we deliver comes with full source code, App Store and Google Play account access, technical documentation, and infrastructure access — there is no subscription, no vendor lock-in, and no dependency on our team to keep the app running. Scope, features, and budget are fixed in the contract before development starts, so what you agree to is what you get.
If your business needs a mobile app that connects to your existing systems instead of running in isolation, book a discovery call with our team.
Sailet is a custom mobile app development company that builds iOS and Android apps for customer engagement, field operations, B2B partner networks, and marketplace platforms for businesses across Europe, including the Netherlands. Instead of building a generic app from a template, we design mobile products around your existing workflows and connect them directly to your CRM, ERP, or internal systems, so data stays accurate in both directions.
Our mobile app development process starts with a discovery call, where we map your business goals, user roles, and required integrations. From there, our team designs the UX/UI and system architecture, builds native or cross-platform apps for iOS and Android, connects them to your backend, APIs, and payment providers — including Stripe and Mollie — and tests everything on real devices before submitting to the App Store and Google Play. Every project includes three months of post-launch monitoring and bug fixes at no extra cost.
We build customer apps for ordering, booking, and loyalty programs; employee and field apps for drivers, warehouse teams, and sales reps; B2B partner platforms for distributors and franchise networks; and marketplace apps with catalogs, cart, and delivery tracking. AI-enabled features — document recognition, workflow automation, and smart assistants — can be built into any of these app types.
Every app we deliver comes with full source code, App Store and Google Play account access, technical documentation, and infrastructure access — there is no subscription, no vendor lock-in, and no dependency on our team to keep the app running. Scope, features, and budget are fixed in the contract before development starts, so what you agree to is what you get.
If your business needs a mobile app that connects to your existing systems instead of running in isolation, book a discovery call with our team.
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