Planteria
Mobile App · Consumer
Instantly identify plants and get personalized care guidance from a single photo.
Visit projectUI/UX DESIGN
UI/UX design agency for mobile and web products
Devello is a UI/UX design agency and product studio based in Istanbul. We design mobile apps and web platforms, from UX strategy and wireframes to a finished visual design and a design system, and the same team builds what it designs. UI/UX design is included in our mobile and web development plans.
What our UI/UX design work covers
UX strategy and structure
UX strategy and information architecture that turn business goals into clear user flows.
Wireframes and prototypes
Wireframing and interactive prototyping, so you can click through the product before any code is written.
Visual design and design system
A visual design aligned with your brand, backed by a design system that keeps every screen consistent.
Usability testing
Usability testing and iteration, so design decisions are checked against how people actually use the product.
How UI/UX design is priced
Design is part of our mobile and web plans: basic UI/UX design on Mobile Lite and a custom UI/UX design from the Basic plans upward. Projects that fall outside a plan get a custom scope and price.
See all pricingHow a project runs
- 01
Discover
We dig into your goals, users and market to decide what to build and why.
- 02
Design
We turn those goals into flows, prototypes and a visual design aligned with your brand.
- 03
Build
We write clean, tested code in short cycles, with weekly updates and full transparency.
- 04
Launch
We ship to the stores or the web, then track real usage and keep improving.
Products we've built
SafeStory
Mobile App · Education
A safe, playful learning experience designed for young children.
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bai+
Web Platform · B2B
A dealer portal that gives partners real-time visibility into their business.
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Frequently asked questions
What does UI/UX design include?
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Devello's design phase covers UX strategy and information architecture, wireframing and interactive prototyping, visual design aligned with your brand, a design system for consistency, and usability testing.
How much does UI/UX design cost?
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Design is included in Devello's mobile and web plans: Mobile Lite includes basic UI/UX design, and the Basic plans and above include a custom UI/UX design. If your project does not fit a plan, we create a custom scope and price.
Can the same team build what it designs?
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Yes. Product strategy, design, engineering and growth work together as one team at Devello, so the design is built by the people who made it.
Do you design for both mobile and web?
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Yes. We design iOS and Android apps as well as responsive web applications and dashboards.
What has Devello designed?
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Examples include the consumer apps Planteria and SafeStory, the bai+ dealer portal and the Covira dashboard.
We treat every service like it's our own product.
We don't just deliver services — we build scalable, well-crafted solutions designed to grow with your business. Every project gets the same care and dedication we put into our own products.