Mobile App Development agencies in Exeter.
Mobile App Development is the build of iOS and Android applications, native (Swift or Kotlin) or cross-platform (React Native, Flutter, or Capacitor), covering discovery, UX and UI design, engineering, QA on real devices, App Store and Google Play submission, and post-launch maintenance. It sits next to web development but answers to a different set of platform rules. This page shows every agency on AgencyIndex offering mobile app development in Exeter.
- 2 UK agencies offering mobile app development in Exeter
- Part of the Mobile App Development service set
- Indexed in Exeter
- Reviewed 18 May 2026
For a decade and a half, Sound In Theory, a distinguished company rooted in Exeter, has been flourishing. The organisation has meticulously put together a squad of specialists who are enthusiastic about undertaking the challenging endeavours that our clientele requires. By consciously cherry-picking projects, Sound In Theory guarantees the provision of top-tier services that it holds in high regar
Prospekt Agency partners with marketing departments and agencies, transforming campaign and communication project concepts into reality. We provide an extensive suite of services, ranging from 3D motion graphics, video production, post-production, image retouching, campaign creation, 3D still imagery, graphic design to web and app development. Our commitment lies in bolstering your brand's persona
AgencyIndex tracks 2 mobile app development agencies in Exeter. The list above is filtered to that intersection and ordered with verified and featured listings first.
For the wider editor's view on mobile app development agencies in the UK, see the mobile app development service brief. For context on Exeter's marketing cluster, see the Exeter location brief. The pricing, timeline and red-flag notes below apply to mobile app development as a discipline; they do not change materially in Exeter.
MVP / lean build £15,000-70,000 · Full production app £40,000-180,000 · Enterprise or regulated £150,000-500,000+. Capacitor / hybrid cheapest at £10,000-80,000. Maintenance retainers typically 15-20% of build cost per year.
Discovery 1-3wks · Design 2-6wks · Build 4-16+wks · QA on device matrix 1-4wks · App Store / Play submission 1-3wks (review 1-7 days). Complex enterprise builds run 6-12 months. Maintenance is ongoing.
- · Refusal to name the actual delivery team or disclose if work is being subcontracted offshore
- · QA done only on simulators with no real-device matrix across iOS and Android versions
- · No App Store Optimisation, no help with screenshots, metadata, privacy labels, or review rejections
- · No SLA on bug fixes, no warranty period, no defined severity levels in the contract
- · Proprietary backend or framework with no clear source code, infrastructure, or data ownership at handover
- · Cannot speak fluently about App Tracking Transparency, Google Play Data Safety, or EU DMA distribution rules
Mobile App Development agencies in other cities.
Other services in Exeter.
What brands ask about mobile app development agencies.
The 5 questions our editors get most often, answered honestly. These apply to mobile app development as a discipline regardless of city.