Mobile app development
Native iOS and Android, or one cross-platform codebase when it makes commercial sense. Offline-first, App Store ready, built to survive its second year.
London · Software & app development since 2017
Software that
rings true.
BELL is a London studio building web platforms, mobile apps and AI-powered products for ambitious teams — from the first sketch to production scale. Senior engineers only. Weekly demos. Code and IP that belong to you.
- 0
- Years shipping
software - 0
- Products designed
& delivered - 0
- From kick-off to
working prototype - 0
- In-house senior
engineering team
01 — Services
Everything it takes to get
a product into people's hands.
One team for strategy, design, engineering and the boring-but-critical infrastructure underneath. No hand-offs, no agency middlemen.
Web platforms & SaaS
Customer portals, marketplaces, internal tools and multi-tenant SaaS — fast, accessible and genuinely pleasant to use on any device.
AI & automation
Copilots, document intelligence, RAG search and workflow automation wired into the systems you already run — with evaluation and guardrails, not hype.
Product design & UX
Discovery workshops, clickable prototypes and design systems. We validate the idea before anyone writes expensive code.
Cloud & DevOps
Infrastructure as code, CI/CD, observability and cost control. Deploy on a Friday afternoon without anyone holding their breath.
Support, security & scale
Monitored SLAs, dependency and security patching, performance work and a roadmap that keeps moving after launch day.
02 — Selected work
Products we've taken from
idea to everyday use.
A sample of the kind of work we do. Full case studies and references available on request under NDA.
Fintech · Mobile
A payments app rebuilt for scale
Replaced a fragile hybrid app with native iOS and Android clients over a shared API layer — cutting crash rates dramatically and unlocking a release cadence the team could actually keep up with.
- 4.8★Store rating
- −62%Crash rate
- 2×Release speed
Logistics · Web platform
Operations dashboard for a growing fleet
A real-time planning platform that replaced a decade of spreadsheets — live tracking, automated scheduling and reporting that finance and operations finally agree on.
- −9 hrsAdmin per week
- 99.9%Uptime
- 3 wksTo first release
Professional services · AI
A document copilot for a 200-person firm
Retrieval-augmented assistant over years of contracts and reports, with citation-backed answers, role-based access and an evaluation suite so the team can trust what it says.
- −70%Time to answer
- 100%Cited sources
- SSOEnterprise ready
03 — How we work
A clear rhythm, from first call
to live product.
You always know what's being built this week, what it costs, and what's coming next. No black boxes.
-
01
Discover
A short paid discovery: goals, users, constraints and technical unknowns. You leave with a scope, a plan and a fixed price — whether or not you build with us.
-
02
Design
Flows, then clickable prototype, then interface. We test with real users early, because changing a rectangle is cheaper than changing a database.
-
03
Build
Two-week sprints, a demo at the end of every one, and a staging environment you can open at any time. Automated tests and code review from day one.
-
04
Launch & scale
Store submission, monitoring, analytics and a support agreement. Then we keep iterating on what the data tells you.
04 — Why BELL
Built like a product team,
not a body shop.
We take a small number of projects at a time so the people you meet are the people who write your code.
Book an intro callSenior engineers only
No juniors learning on your budget. Every line is written or reviewed by someone who has shipped and maintained products at scale.
You own everything
Source code, repositories, cloud accounts, designs and IP are yours from the first commit. No lock-in, no hostage situations.
Fixed scope, honest pricing
Discovery produces a real number. If something changes, we tell you before it costs you, not after.
UK company, GDPR-ready
A registered English company with UK contracts, DPAs and data handling that stands up to procurement and legal review.
05 — Engagements
Three ways to work with us.
Every project starts with a conversation and, usually, a discovery sprint. Indicative pricing — your quote follows discovery.
Discovery sprint
from £4,500
One to two weeks to turn an idea into a costed, de-risked plan.
- Stakeholder & user interviews
- Technical feasibility review
- Clickable prototype
- Scope, roadmap & fixed build quote
Product build
from £25,000
End-to-end design and engineering for a launch-ready product.
- Dedicated design + engineering pod
- Two-week sprints with live demos
- Automated testing & CI/CD
- App Store / Play submission
- 30 days post-launch support
Embedded team
monthly retainer
Senior capacity plugged into your existing team and rituals.
- Engineers in your stand-ups & tooling
- Flexible scale up or down
- Architecture & code-quality oversight
- Monthly rolling agreement
06 — Questions
Answers, before you ask.
Something not covered here? Send it over — we reply within one working day.
How quickly can you start?
Discovery usually begins within two weeks of signing. Full build teams are typically booked three to four weeks ahead — tell us your deadline and we'll be straight with you about whether we can hit it.
What does a typical project cost?
A focused mobile or web MVP generally lands between £25,000 and £80,000 depending on integrations, compliance and platform count. Discovery gives you a fixed number before you commit to the build.
Do we own the code?
Yes — entirely. Repositories, cloud accounts, design files and intellectual property are in your name from day one, and we hand over documentation so another team could pick it up tomorrow.
Can you work with our existing codebase or team?
Often. We start with a short technical audit, then either take ownership of a workstream or embed alongside your engineers using your tools and processes.
What happens after launch?
Most clients move onto a support agreement covering monitoring, security patching, store updates and a monthly allocation for improvements. You can also take it fully in-house — we'll help you hire and onboard.
Where are you based, and does it matter?
We're registered in London and work with clients across the UK and Europe. Delivery is remote-first with in-person workshops when they earn their travel time.
07 — Get in touch
Tell us what you want
to build.
A 30-minute call, no pitch deck. You'll get an honest read on scope, cost and whether we're the right studio for it.
-
Registered office71–75 Shelton Street, Covent Garden,
London, England, WC2H 9JQ -
CompanyBELL Technology Solutions Ltd · No. 10781235
Registered in England & Wales