Custom Software Development

From MVP to platforms built to carry AI.

Twistag designs, builds and runs web and mobile products, internal tools and platforms, with one senior team from the first MVP release to the platform it grows into.

Book a callSee what it delivers
A concrete building under construction, floors still open
Why build it this way

Most custom software starts as an MVP and has to become a platform. It should be built for both from the first sprint.

  • 01An MVP that cannot grow. Rebuilt from scratch at the first sign of success.
  • 02Every release a risk. No tests, no budgets, no confidence.
  • 03AI bolted on after launch. Data and architecture never planned for it.
What gets built

A product that launches small and keeps improving.

The MVP proves the idea with real users. The same codebase, design system and tests carry it to a full platform.

  1. 01MVP scopeThe smallest release that proves the idea with real users.
  2. 02Design systemOne system shared between Figma and the codebase.
  3. 03Architecture built to growModular services, clean data and room for AI.
  4. 04AI featuresModels, retrieval and agents where they do a real job.
  5. 05Quality on every changeAutomated tests, WCAG 2.2 AA and performance budgets.
  6. 06Run and improveReleases, monitoring and a roadmap after launch.
ExampleOne codebase

From MVP to platform, without a rebuild

  1. 12 weeksMVP
    • Core flow
    • Payments
    • Admin
  2. + 6 monthsProduct
    • Mobile app
    • Search
    • Integrations
  3. + 12 monthsPlatform
    • Partner API
    • AI recommendations
    • Multi-market
Same architecture, design system and testsAI added where it does a job
How it runs

From discovery to launch in three to six months.

An MVP reaches real users first. The product grows release by release from there.

Scope
12 weeks
DiscoveryScope and plan confirmed
Design systemShared with the code
Build in sprintsReleases every two weeks
Testing and QAAutomated, on every change
LaunchReal users, measured
A product ownerSets priorities every sprint.
Access to connected systemsAPIs, data and environments.
Real users for early releasesTo prove each step.
After launch

Keep shipping, add agents or take it in-house.

AI Enablement for EngineeringKeep shipping faster

Human and agent pods inside the company’s own team.

Next step Agentic Platforms & Operation CentresAdd an agent layer

The product becomes the place where the company’s agents run.

Next step
Full handoverRun it in-house

Code, design files and the design system belong to the company from day one.

Related work

Products in customers’ hands.

All case studies
Keepwhat · Logistics12 weeksto launchBuilding an on-demand storage marketplace in 12 weeksRead the case kencko · Retail & consumerMVP → profitfoodtech DTC brandScaling a foodtech DTC brand from MVP to profitabilityRead the case
Questions

About custom software.

How fast can an MVP launch?

Often within three months of discovery. Keepwhat’s on-demand storage marketplace launched in twelve weeks.

Which technologies does Twistag use?

React, Next.js and Vue on the web; React Native, Flutter, Swift and Kotlin on mobile; Node.js, Python and Java on the back end, on the cloud the company already runs.

Can the MVP grow into a full platform?

That is the point of the approach: the same architecture, design system and tests carry it from the first release onwards.

Is it a fixed price?

Either. A fixed-scope build has a fixed price and launch date; a product squad works in quarterly scopes.

What does it cost?

Cost follows scope: the platforms involved, the integrations, the design and research needed and how long the team stays. A proposal follows within a week of the first call.

Who owns what is built?

The client owns everything: source code, design files, infrastructure as code, prompts and documentation, handed over in full.
More in Product Engineering

Other Product Engineering services.

Product Engineering overview
AI Enablement for EngineeringHuman and agent pods that ship fasterExplore AI-Native Product StrategyFrom problem to a validated productExplore Agentic Platforms & Operation CentresThe product around a company’s agentsExplore
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Custom Software Development

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