Trusted by more than 60 clients
From onboarding to everyday use, we refine every journey, shortcut, tap, response and usability detail to minimise friction and give people a reason to return.
More than 50% retention on day seven.
day-seven retention across our latest application launches.
Internal SOLIS data
We secure data, anticipate risks and scale the infrastructure to actual demand, then provide maintenance to keep the application available, responsive and ready to evolve.
80%
of serious outages could have been prevented with better configurations.
Source : Uptime Institute
Our process
Every project begins with an interactive prototype and a detailed proposal. Once we have incorporated your feedback and received your approval, we build the solution with transparent milestone and time tracking, then handle testing, launch or delivery. Explore our case studies.
After you contact us through one of our forms, we define your project before you make any commitment.
Once the agreement is signed, we work with you from prototype to development.
We quality-check and deliver your project, after which you receive your SOLIS client card.
What you receive
Before writing the first line of code, we examine the project with you: users, priorities, technology, budget and phases. We then design the right V1, prepare the architecture for what comes next, develop the application and support you through publication. Explore these choices in more detail in the How we add value section just below.
From10’000 CHF
Together, we clarify the need, users and objectives, then create an initial clickable prototype to define the user journeys and essential features.
We define the essential features (MVP), then organise V2, V3 and future development around feedback, ambition and budget.
User journey design, native or cross-platform technology, backend, APIs, database, administration when needed, security and performance: every decision prepares the application to grow without starting over.
We develop the iOS and Android application, incorporate your feedback and advise you throughout the project, with clear tracking of progress and hours.
We test and optimise the application, prepare the accounts, product pages and forms, submit it to the App Store and Google Play, then work with you on the feedback and requested changes.
We configure the production launch, hand over access and technical materials, and can then provide maintenance, support and the following phases.
For a public release, we can organise the waiting list, beta, newsletters and launch calendar to bring the first users together—just as we did for Kinn.
How we add value
We do more than develop your application: we clarify your objectives, define the essential features (MVP) and organise the phases, budget and schedule to maximise its chances of success.
Together, we choose between native development—Swift for iOS and Kotlin for Android—and a shared codebase. Native development prioritises platform-specific performance; cross-platform development streamlines development and maintenance. The right choice depends on the intended experience, features, budget and future roadmap.
a 20% reduction
in crashes per user with Kotlin on Android.
Source : Android Developers
Together, we design the architecture, databases, APIs, authentication, security and performance. This coherent foundation limits dependencies, protects data and makes future development easier.
We turn your idea into a useful first version centred on priority features and journeys. Scoping clarifies the UX, costs and stages so the product can be validated iteratively.
6.4%
of features account for 80% of clicks in the average digital product.
Source : Pendo Product Benchmarks
Case study
Kinn began with an ambitious social-sport concept, but no certainty about the right technology or the first version to launch. We turned both questions into concrete decisions.
We advised Kinn to develop two native applications: Swift for iOS and Kotlin for Android.
Rather than launch the entire original vision at once, we advised Kinn to move forward in phases.
Client feedback
SMEs, independent professionals and teams trust us with their projects for our attentive approach, exacting standards and ability to turn ideas into useful tools.
Frequently asked questions
Essential features (MVP), iOS, Android, native or cross-platform development, security and delivery: the essential points to consider before developing your application.
SOLIS brings design, development and SEO expertise together in one team to create fully custom solutions—never template-based. From our base in Martigny, we draw on more than 10 years of experience and over 100 completed websites and applications. You receive an initial interactive prototype with your proposal, then track each stage and the hours spent on your project through your client area.
We begin by defining your objectives, content and user journeys, then prepare an initial interactive prototype together with a detailed proposal. Once the agreement is signed and the deposit paid, the prototype enters an iterative phase: we refine it with you until you are completely satisfied. Development starts only after your full approval, so the intended outcome is clear before any code is written. Testing, launch or delivery follows, with a client area where you can view milestones, progress and the hours spent on the project.
The prototype supplied with the proposal is an initial clickable version of your future solution. It gives you a tangible view of the design, structure, user journeys and key content, while helping us estimate the scope, hours and budget accurately. It is free and carries no obligation. If you accept the proposal, it becomes our working foundation: after the deposit, we refine it as much as needed until you give full approval, and only then do we begin development.
Prices start at CHF 5,000 for a website, CHF 7,500 for an e-commerce site and CHF 10,000 for a mobile application or business software. The final amount depends on the features, content, automations and integrations that genuinely add value. Because the proposal is prepared alongside an initial interactive prototype, we can estimate the scope and hours based on something tangible rather than an abstract idea.
A 50% deposit confirms the project and starts the feedback and prototype-finalisation phase. We refine it until you are entirely satisfied; development begins only after you approve the design and user journeys. The final invoice is then adjusted to reflect the work actually completed: unused hours are deducted, and any additional hours are discussed and approved with you before they are incurred.
You can email info@solisdev.ch, call +41 77 280 74 89 or contact the team on WhatsApp. SOLIS is based at Rue du Simplon 86 in Martigny and works with clients throughout French-speaking Switzerland.
We can develop a native iOS application in Swift, a native Android application in Kotlin, or a cross-platform application built on a shared codebase. Native development provides the most direct access to each platform’s APIs, components and latest capabilities, including hardware integrations, performance, animations, widgets and visual effects such as Liquid Glass on iOS. It also makes it possible to adopt new Apple or Google features quickly. Cross-platform development shares more code, which can shorten development time and simplify maintenance. It is an excellent fit for many projects, although some advanced features may still require iOS- or Android-specific code. We choose the approach after scoping, based on the desired experience, features, budget and expected evolution of the product.
Yes. Projects can be designed for iOS and Android. The interface retains your identity while respecting the conventions of each platform. We choose the architecture and technologies after scoping and prototyping, based on the features, expected performance, budget and long-term maintenance needs.
Yes. The prototype makes the whole idea visible, helps identify a genuinely useful first version and allows essential features to be prioritised before investing in code. Following your feedback, we refine it until the scope of the essential features (MVP) is completely clear. The foundations are then designed to accommodate new screens, journeys or integrations without rebuilding the application from scratch.
UX, architecture, security and performance are considered from the outset. Because every screen and journey is fully approved in the prototype before development, the expected result is known and testing can focus on the quality of the product itself. The application is then tested and optimised before release or delivery; publishing accounts, maintenance and future development are specified in the proposal.
