Flutter Mobile App Development
Ubikon builds iOS and Android apps from a single Flutter codebase — one engineering team, one release cadence, native performance on both pl…
$8k–$45k · 4–12 weeks
Ubikon builds thirteen things, at production grade — mobile apps (Flutter and React Native), four flavors of AI work including voice, SaaS and enterprise platforms, MVPs, web applications, backends, and the lifecycle work of modernizing and maintaining products already in production. No 40-item service menu; we build what we've shipped hundreds of times, on stacks we run in production ourselves.
What we build
Ubikon builds iOS and Android apps from a single Flutter codebase — one engineering team, one release cadence, native performance on both pl…
$8k–$45k · 4–12 weeks
Ubikon builds AI features that ship inside real products — Claude-powered assistants, retrieval-augmented generation over your own data, and…
$10k–$60k · 4–14 weeks
Ubikon builds production AI agent systems — multi-step workflows where Claude plans, calls tools, and checks its own work, using MCP for a s…
$18k–$70k · 6–16 weeks
Ubikon builds multi-tenant SaaS platforms architected for the second hundred customers, not just the first — billing, roles and permissions,…
$15k–$80k · 6–16 weeks
Ubikon takes an idea to a fixed, line-item quote in 48 hours and a shipped MVP in 4–10 weeks, priced from delivery data on 300+ prior builds…
$8k–$40k · 4–10 weeks
Ubikon builds dashboards, portals and marketing sites on Next.js that hit Core Web Vitals green and stay maintainable after launch — typed, …
$6k–$35k · 3–10 weeks
Ubikon builds fast, documented, tested APIs on FastAPI, PostgreSQL and MongoDB that mobile and web teams can build against on day one — type…
$8k–$40k · 4–10 weeks
Ubikon adds AI — assistants, retrieval, automation — into a product you already ship, without a rewrite. A typical integration runs $8k–$35k…
$8k–$35k · 3–8 weeks
Ubikon builds React Native apps in the specific cases where the framework genuinely wins — an existing React/TypeScript team that will maint…
$8k–$45k · 4–12 weeks
Ubikon builds products that listen and speak — voice agents, speech capture, live translation — and prices the work within its AI developmen…
$10k–$60k · 4–14 weeks
Ubikon modernizes existing products that have become slow, fragile or stuck on a dead stack — a codebase audit first, then incremental slice…
$8k–$80k · 3–16 weeks
Ubikon runs post-launch maintenance as a monthly product squad: $6k–$18k/month, ongoing month-to-month with no minimum term and 30 days noti…
$6k–$18k / month · Ongoing, month-to-month
Ubikon builds internal platforms and multi-tenant systems — role-based access, audit logging and integration with your existing ERP and lega…
$15k–$80k · 6–16 weeks
At a glance
Ranges come from line-item delivery data across 300+ completed builds. Your fixed quote lands within 48 hours of a scoping call.
| Service | Typical range | Timeline | Best for |
|---|---|---|---|
| Flutter Mobile App Development | $8k–$45k | 4–12 weeks | Mobile |
| AI Development Services — LLM Apps & RAG | $10k–$60k | 4–14 weeks | AI |
| AI Agent Development | $18k–$70k | 6–16 weeks | AI |
| SaaS Development | $15k–$80k | 6–16 weeks | SaaS |
| MVP Development | $8k–$40k | 4–10 weeks | MVP |
| Web Development — Next.js | $6k–$35k | 3–10 weeks | Web |
| Backend & API Development | $8k–$40k | 4–10 weeks | Backend |
| AI Integration for Existing Products | $8k–$35k | 3–8 weeks | AI |
| React Native App Development | $8k–$45k | 4–12 weeks | Mobile |
| Voice AI Development — Speech Interfaces & Voice Agents | $10k–$60k | 4–14 weeks | AI |
| App Modernization & Codebase Takeover | $8k–$80k | 3–16 weeks | LIFECYCLE |
| Software Maintenance & Support | $6k–$18k / month | Ongoing, month-to-month | Lifecycle |
| Enterprise Software Development | $15k–$80k | 6–16 weeks | Platform |
Straight answers
Most projects land between $8,000 and $80,000 depending on the service line: an MVP runs $8k–$40k, a mobile app $8k–$45k, a SaaS platform $15k–$80k, and AI agent work $18k–$70k. Every quote is fixed and line-item, priced from delivery data across 300+ completed builds rather than an hourly estimate, and it arrives within 48 hours of a scoping call.
If you are validating an idea, start with MVP development. If you know what you are building and it is a phone-first product, that is mobile app development. Multi-tenant products with billing and roles are SaaS. If you already have a product and want AI inside it, that is AI integration rather than AI development. Projects routinely span two lines — that is normal, and we will say so on the call rather than upselling a third.
Because these are the things Ubikon has shipped repeatedly on stacks it runs in production itself — Flutter, Next.js, FastAPI, PostgreSQL and the Claude API. A 40-item service menu means most items have been built once or never. Narrow scope is what makes fixed quotes from real delivery data possible in the first place.
Flutter for mobile (one codebase, both platforms), Next.js for web and SaaS front ends, FastAPI for backends, PostgreSQL or MongoDB for data, and the Claude API for AI work. These are chosen for hiring depth and long-term maintainability, not novelty — you should be able to hand the codebase to any competent team. The tech stack selector tool will give you a recommendation with the honest tradeoffs for your specific case.
Between 3 and 16 weeks depending on the service line: web applications from 3 weeks, MVPs 4–10 weeks, mobile apps 4–12, SaaS platforms and AI agents 6–16. You get a working build to open every week with a video walkthrough and a written changelog, so the timeline is visible as it happens rather than at the end.
Not sure which one fits?
30 minutes, no deck. If your project spans two of these, that's normal — we'll say so on the call.