Mobile app design and development built for retention
We design, build and launch iOS, Android and cross-platform apps that get users to value fast, feel native from day one and give you a roadmap after App Store approval.
Free strategy consultFixed-price project quoteReply within one business day
Shipping an app is easy. Shipping an app that survives week one is the hard part: onboarding that gets users to value fast, performance that feels native, and a reason to come back tomorrow.
Devibi handles the full journey — product strategy, UX and UI design, development, launch and the post-launch iteration loop where retention is actually won. One team, one roadmap, no hand-offs between a 'design shop' and a 'dev shop'.
( Everything included, nothing vague )
What our app design & development services include
Product strategy & scoping
We pressure-test the idea, cut the MVP to what proves value, and sequence the roadmap so you ship in months, not years.
UX & UI design
Flows prototyped in motion before a line of code — so you feel the app, not imagine it from static screens.
iOS & Android development
Swift and Kotlin when native performance matters; React Native or Flutter when one codebase serves both platforms better.
Backend & API engineering
Auth, data, notifications and integrations built on infrastructure that scales past your launch spike.
App Store launch
Store listings, screenshots, review compliance and a launch checklist that gets you approved the first time.
Post-launch analytics & iteration
Funnels and retention cohorts wired in from day one, with a monthly iteration cadence to act on them.
( What it means for you )
- MVP in the stores in 12–16 weeks
- One team from strategy through launch
- Onboarding designed around time-to-first-value
- Analytics you can act on, not vanity dashboards
( Before you ask )
Frequently asked questions
Should I build a native app or cross-platform?
Cross-platform (React Native or Flutter) is right for roughly 80% of apps — one codebase, two stores, lower cost. Go native (Swift/Kotlin) when you need heavy animation, AR, advanced camera work or every millisecond of performance. We'll recommend based on your feature list, not our preference.
How long does it take to build a mobile app?
A focused MVP typically takes 12–16 weeks: 3–4 weeks of strategy and design, 8–10 weeks of development, then 1–2 weeks for store review and launch. Complex products with custom backends run longer — we'll give you a week-by-week plan before you commit.
How much does app development cost?
Most Devibi MVPs land between $30,000 and $120,000 depending on platform choice, backend complexity and design depth. We quote fixed prices per milestone, so the number you approve is the number you pay.
Do you maintain apps after launch?
Yes. Most clients stay on a monthly retainer covering OS updates, crash monitoring, feature iterations and store compliance. Launch day is the midpoint of an app's journey, not the end of ours.
( Pairs well with )
Stronger together.
AI Integration & Automation
AI automation, chatbots and copilots connected to your data, CRM and support workflows.
02Website Design & Development
Custom website design and development for fast, SEO-ready sites that turn visitors into booked calls.
03Conversion Rate Optimization
Conversion rate optimization audits, testing and landing page fixes that turn more traffic into leads.
Apps — let's talk.
Bring the idea, napkin sketch or app that needs rescuing. We'll map the smallest launch version, the timeline and the risks before you spend heavily.