Abdev – iOS & Android App Development

iOS & Android Development

Projects & Consultancy

15+

Years in mobile

50+

Apps shipped

100+

Largest dev team worked in

Major brand clients

A snapshot of high-profile projects we've contributed to — from small focused pods to teams of 100+.

Sky News & Sky Sports

iOSSwift100+ Dev Team

High-traffic streaming and live sports apps delivering real-time content to millions of UK viewers daily.

Client: Sky TV

First Direct Banking App

iOSSwiftSwiftUI

Award-winning banking app. Built within an agile pod of 7, focused on security, accessibility, and seamless UX.

Client: HSBC

MoneySuperMarket Go

iOSSwift50+ Dev Team

Consumer price-comparison app helping millions save on insurance, energy, and financial products.

Client: MoneySuperMarket

RentalCars

iOSSwift8+ Dev Team

Global car hire booking app — integrating complex search, real-time availability, and payment flows into a clean mobile journey.

Client: RentalCars.com

Music Magpie

iOSSwift5+ Dev Team

Re-commerce app with barcode scanning to instantly sell CDs, games & tech — fast, clean, and intuitive.

Client: Music Magpie

AstraZeneca App

iOSSwiftHealthcare

Internal enterprise app supporting clinical and commercial operations, built within a focused pod with strict compliance standards.

Client: Exco In Touch for AstraZeneca

We've also worked with Sony, BBC, and more across a wide range of sectors and team sizes.

Company names and logos shown above identify apps and programmes we have contributed to, in some cases through agencies or as part of wider delivery teams. All marks are the property of their respective owners. Their use here does not imply endorsement, partnership, or a current client relationship.

Services

Two Ways To Work With Us

Hand the whole build over, or add senior mobile capability to a team you already have. Both on iOS and Android.

📦

Your app, built and shipped

You have a design brief and a deadline. We take it from there — full-stack development, iOS and Android, through testing and App Store and Google Play submission to release. No need to hand us a team, a process or a project manager: you get a finished app and the source code that made it.

Design brief in, released app out

🤝

Extra capacity for your team

You already have a product team and need experienced hands on the mobile side. We work the way you work — your stack, your process, your board — covering architecture, code review, CI/CD and release management. Comfortable in regulated and compliance-heavy environments.

Short and long engagements · day rate on application

Free, no-obligation estimate

Send over what you have and you'll get an honest estimate of the days involved, and what that costs, within two working days. If it isn't a good fit, we'll say so and tell you what would be.

Useful to include, if you have it:

A design brief, wireframes or rough sketches — even napkin level
Roughly how many screens you think it needs
Whether it needs a login, payments, or a backend
iOS, Android, or both
The date it has to exist by, and the budget you're working to

Don't have all that? Send a paragraph describing the idea. That's genuinely enough to start.

Get your free estimate →

How pricing works: we estimate the days the work will take, agree that estimate with you up front, and bill at a day rate against it. You see the reasoning, not just a number — and if something lands faster than estimated, you pay for the days it actually took.

Every project runs the same four stages, so you always know what happens next.

1️⃣

Scope call

A conversation about what the app has to do and when it has to exist. Free, no obligation, usually 30 minutes.

2️⃣

Written estimate

Within two working days: the days the work will take, what drives that number, the timeline, and what is and isn't included.

3️⃣

Build & review

You get a working build on your own phone partway through — not a slide deck — so feedback lands while it's still cheap.

4️⃣

Launch & handover

We submit to both stores, handle review, and hand over the code and accounts with a bug-fix window after release.

Why Abdev

What Sets Us Apart

Fifteen years of shipping real apps to real deadlines — and quality you can measure.

🏆

Proven Delivery

50+ apps shipped for household names. We know what quality looks like — we've been delivering it for 15 years.

⚡

Full Stack, Brief To Store

Design brief in, released app out — iOS and Android, backend integration, testing, and both store submissions handled end to end. One person accountable for the whole chain.

🤝

However You Need Us

Take the whole build off your hands, or slot into a team of 100 and adapt to your process. Both are business as usual here.

🎯

Tailored Solutions

We invest time understanding your users and constraints before writing a line of code. The result? Software that actually fits.

Our in-house games studio. 9 games & apps published on the App Store and Google Play — every one free to download.

Games & Apps

Play Our Games — Free

Watch real gameplay, swipe the screenshots, and grab any game free on the App Store or Google Play. From AI-powered RPG adventures to fast-paced runners and brain-teasing puzzles — all built in-house by Secret Box.

FREENEW

Astro-X

Space Survival

Arcade

Thread your ship through an endless trail of asteroids — a fast, free arcade dodger where the music controls the danger. Drag one finger to weave through 100 hand-tuned waves of neon chaos. Now free on the App Store and Google Play.

Classic · 100 waves Marathon · endless Daily Challenge

Music-reactive chaos — every asteroid, comet, mine and laser pulses to the beat.
100 hand-tuned waves — a way through always exists; when you lose, it's you, never the game.
Screen-filling boss fights — motherships, minefields, gravity wells, tractor beams and more.
Climb the global leaderboards with a fresh 60-second Daily Challenge every day.
One-touch controls — easy to start, brutal to master. Play offline, anywhere.

Download on theApp Store GET IT ONGoogle Play

FREE

AI Adventure: Your Story RPG

Infinite AI Stories & Roleplay

RPG

Step into any world you can imagine. Be the hero, the villain, or someone no-one's ever seen. Every choice bends the story around you — powered by AI, no two adventures are ever the same.

Download on theApp Store GET IT ONGoogle Play

FREENEW

Sugar Cubes: Block Puzzle

Build it. Smash it. Your call.

Puzzle

The block puzzle where you rotate the pieces. Set up monster combos, clear the board, and tackle a fresh hand-crafted Daily Puzzle across 5 difficulty tiers.

Download on theApp Store GET IT ONGoogle Play

FREE★ 4.6

Sleep Like a Baby

White Noise & Bedtime Stories

Lifestyle

★★★★★ 4.6 · App Store average

Can't switch off at night? Fall asleep faster with AI bedtime stories on any topic, hand-picked white noise and sleep sounds, and a smart sleep-cycle calculator. Trusted by millions since 2017.

Download on theApp Store GET IT ONGoogle Play

FREE

Ding Dong Delivery: Pizza Run

Retro Arcade Runner

Arcade

Paperboy grew up and now delivers pizza! Dodge traffic, outrun zombies, and unlock 25+ crazy vehicles — tanks, boats, police cruisers and more. One-thumb controls, endless mayhem.

Download on theApp Store GET IT ONGoogle Play

FREE

Ziggy Road — ZigZag Traffic Racing

Ziggy Road

ZigZag Traffic Racing

Racing

Zig zag your way along the world's craziest streets. One-touch controls, endless gameplay, and three bonus modes — Night Rider, Carnage, and Zombie! All vehicles unlocked free.

Download on theApp Store GET IT ONGoogle Play

FREE

Mind Reader: Mystic Maven

Can she read your mind?

Entertainment

Think of anyone, anything, anywhere — and watch Mystic Maven guess it. She asks clever yes/no questions to uncover your thought. Classic 20-Questions, turned into mind-reading magic.

Download on theApp Store GET IT ONGoogle Play

📱

More by Secret Box

Golf Ball Finder · Golf Caddie · IF Interactive Fiction · Ziggy Kids Racing · Sugar Cubes SMASH

View all free apps →

About Abdev

One Company,
Two Passions

Abdev — short for Abson Developments Ltd — is a UK-based mobile studio with over 15 years building for iOS and Android. We do two things: we deliver professional, high-quality app development for some of the UK's biggest businesses; and we create our own original games under the Secret Box label.

Whether that's helping a Sky News journalist break a story, letting a First Direct customer check their balance, or putting a pizza-delivery runner in a 10-year-old's hands — every line of code is written with the same care.

Get in touch →

🍎
Mobile Since Day OneFrom the original iPhone SDK to Vision Pro, and shipping on Google Play alongside it — we've been here from the start.
👤
You Deal With The DeveloperDeliberately small. The person who quotes your project is the person who builds it — no account managers, no handoffs.
🏗️
Enterprise & ScaleExperienced in large agile teams, complex pipelines, and compliance-heavy environments.
🎮
Game Developers TooOur Secret Box games prove we understand what makes users come back — fun, polish, and flow.
🇬🇧
UK-BasedClear communication, compatible time zones, no surprises.

Good To Know

The Practical Detail

The answers your procurement, finance or legal team will want before we start work.

🏛️
UK Limited CompanyAbson Developments Ltd, registered in England & Wales. VAT registered.
🛡️
InsuredProfessional indemnity and public liability cover in place. Certificates supplied on request.
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GDPR & Data HandlingUK GDPR compliant, with data processing agreements and UK/EU data residency.
♿
AccessibilityBuilt to WCAG 2.2 AA principles, including the public sector requirements universities work to.
🔑
You Own The IPOn final payment, source code, assets and store listings transfer to you. No lock-in, no annual renewal.
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Clear Payment TermsStaged against delivery milestones, invoiced from a UK company. Purchase orders welcome.

Business
App Dev

Fun Mobile
Games

Projects & Consultancy