• Low-code & no-code product studio

Let's build it the fast way first.

We are a low-code and no-code studio, and we would rather get something real in front of your users in six weeks than perfect on a slide in six months. Once you know what people actually use, we write custom code for the parts that earn it. Design, build, and launch all happen with the same small team.

Book a call
See how we work
Thirty minutes, no deck, no invoice. You will leave with a scope, a rough range, and an honest read on whether low-code suits what you are building.

Teams we work with

Live in weeks
Most business software is forms, records, dashboards, and approvals. Low-code platforms handle that in a fraction of the time, so your budget goes toward the parts that make you different.
One team, start to finish
Research, UI/UX, build, QA, and release sit with the same people. You will not spend your week translating between a design shop and a dev shop.
Yours from day one
Accounts, repositories, data, and documentation are in your name from the start. If you ever want to take it in-house or elsewhere, nothing is holding you back.

What we do

Four services. Most projects use two or three together, and we will tell you which ones you can skip.

01

Low-code & no-code

Our main way of working. MVPs, internal tools, and automations built on platforms your own team can change afterwards. The point is not cheap software, it is software you are never locked out of.
MVPs in 4–8 weeks
Internal tools
Workflow automation
Spreadsheet migration
Team training

02

UI/UX design

We start with the job your product has to do, then draw the shortest path to it. Interfaces get in front of real users before anyone builds anything, because that is the cheapest moment to change your mind.
Product discovery
User flows
Wireframes
High-fidelity UI
Design systems
Clickable prototypes

03

Web applications

Dashboards, customer portals, marketplaces, and the internal tools your team currently runs out of spreadsheets. Built to carry real permissions and real data volume, on a platform or in code.
SaaS dashboards
Client portals
Admin panels
API integrations
Role-based access
Payments
04

Mobile applications

iOS and Android from a single build, including the unglamorous parts: offline states, push notifications, deep links, and getting through app store review without a surprise.
Cross-platform builds
Offline-first
Push notifications
Store submission
Release pipelines

What we build on

Six platforms we know well enough to know their limits. We pick one with you during the blueprint, not before.

Bubble

Full web applications with real logic, accounts, permissions, and payments. Our default for a first version.

FlutterFlow

iOS and Android from one visual build, with a real Flutter codebase underneath if you outgrow it.

Webflow

Marketing sites and content-heavy pages your marketing team can edit without asking us first.

Framer

Fast, animated sites and prototypes polished enough to test with users or show an investor.

Airtable

The operational database behind the product, in a shape your ops team is happy to work in daily.

Supabase

Postgres, authentication, and storage for when the data has to scale and stay portable.
And when none of them fit

We write it in code. The platform is a means, not a position we defend. If your project needs React and a real backend, that is what we will recommend, even though it takes longer.

The honest version

Low-code is faster. It is also a tradeoff.

We would rather you hear this from us now than discover it in month four. Here is where our approach works beautifully and where it stops working, so you can judge for yourself. We make the call together during the blueprint, before any money changes hands on a build.

Low-code suits you when

  • You want something working in four to eight weeks rather than six months.
  • The product is mostly forms, records, dashboards, approvals, and notifications.
  • You are still learning whether people want it, so being wrong should stay cheap.
  • You would like your own team editing logic without filing a ticket with us.

Custom code suits you when

  • Real-time, offline, or high-volume processing sits at the centre of the product.
  • Compliance, audit, or data residency rules dictate where everything has to run.
  • The interface has to feel unmistakably yours, down to the motion.
  • You are raising money on technical differentiation, and investors will look closely.
Usually it is both

A low-code admin behind a custom customer app. An Airtable operations layer over a Supabase database. We map which parts go where in the blueprint, and we plan your route off the platform before you are ever on it.

How a project runs

Four phases. You can stop after any of them and keep everything produced so far.

01

Scope call

30 minutes · free
Tell us what you are building, who it is for, and what is already decided. You leave with a rough range and a timeline, in writing, whether or not you work with us.
02

Blueprint

1–2 weeks · fixed fee
Flows, screens, data model, and platform choice, decided together. It ends with a fixed scope and a fixed price for the build, and it is yours to take anywhere.
03

Build

2–10 weeks · weekly demos
You see working software every week, not a status report. When you change your mind, we price it against the blueprint and you decide calmly.
04

Handover

1 week · then optional
Documentation, credentials, and a recorded training session for your team. After that, a monthly support retainer if you want one, or we step away cleanly.

Selected work

A few recent projects, the platform each was built on, and what changed for the client.

Sector · Platform

Project name goes here

One sentence on what the client needed. One sentence on what you built. One measurable outcome.
Result: add the number here
Sector · Platform

Project name goes here

One sentence on what the client needed. One sentence on what you built. One measurable outcome.
Result: add the number here
Sector · Platform

Project name goes here

One sentence on what the client needed. One sentence on what you built. One measurable outcome.
Result: add the number here

About us

A small team, on purpose.

Rantum Solutions is a compact group of designers and builders. You will talk to the people doing the work, every week, for the whole project. There is no account manager between you and the person moving the button.

We work with founders getting a first version out, operating teams replacing spreadsheets, internal teams who need a tool their IT roadmap will not reach for two years, and agencies who need quiet extra capacity under their own name.

Name

Role

Name

Role

Name

Role

Name

Role

Ways to work together

Every engagement is quoted after the scope call, once we both understand the shape of it. No hourly billing.

Sprint

Two weeks, one outcome. A design sprint, a prototype for a pitch, or a single feature shipped. A gentle first step if a longer commitment feels premature.
Fixed fee · 2 weeks

Project

Most common
Blueprint through handover. Fixed scope, fixed price, weekly demos. You own everything at the end and can maintain it in-house or keep us on.
Fixed price per phase · 4–12 weeks

Retainer

A standing block of design and development capacity each month, for teams shipping continuously or agencies working under their own name. Cancel with 30 days notice.
Monthly · rolling

Writing

Notes on platform limits, migration paths, and what we learn from shipping quickly.

Category · Date

Post title goes here

One line of standfirst so the reader knows whether this is for them.
Category · Date

Post title goes here

One line of standfirst so the reader knows whether this is for them.
Category · Date

Post title goes here

One line of standfirst so the reader knows whether this is for them.

Questions we get on the first call

Who owns the code and the accounts?

You do, from the first day. Repositories, platform subscriptions, cloud accounts, and domains are created in your name, and we work inside them as collaborators.

What if we outgrow the platform?

We plan for it in the blueprint. Your data lives in a portable database such as Supabase rather than locked inside the builder, so a later rewrite replaces the interface layer instead of starting over.

How do you price?

Fixed price per phase. The blueprint is quoted after the scope call, and the build is quoted from the blueprint. Nothing is billed by the hour, so a slow week is ours to absorb.

Can you work alongside our team?

Happily. We regularly take design-only or build-only scopes and slot into an existing backlog, standup, and review process. We also work white-label for agencies.

Do you sign NDAs?

Before the scope call if you would prefer. Send yours over, or ask for ours.