Sonin
Reigate, Surrey app development agency founded in 2009 (trading as Big Orange Software Ltd). Award-winning iOS, Android and web specialist with clients including Caterpillar, The British Museum, Cambridge Audio, and Sheilas' Wheels.
How much does Sonin charge?
Sonin lists $150–$199/hr with a $75K+ minimum. Confirm a live quote before you budget — these figures come from public materials reviewed 2026-09-18.
- Hourly rate
- $150–199
- Min project
- $75K+
- Team size
- 50-100
- Remote
- Yes
Compared with 107 listed agencies
Midpoint $175/hr vs directory median $125/hr — the upper third (79th percentile, September 2026).
See how hourly rates become project totals in the cost guide.
Who is Sonin a good fit for?
IoT and SaaS integration for hardware-linked products. 15+ years in Surrey; Edinburgh office. Caterpillar through British Museum client range.
Best for
UK mid-market and enterprise organisations needing mobile products tightly integrated with IoT hardware, enterprise back-ends, or complex SaaS ecosystems. Industries including construction, property, healthcare, and manufacturing.
Tradeoffs
Reigate HQ means London clients face a commute for in-person workshops. The $150-$199/hr rate band is among the higher end for regional UK agencies and may be hard to justify for projects with modest complexity. Smaller team size (50-249) could strain capacity during simultaneous large-scale engagements.
About Sonin
Sonin was founded in 2009 in Reigate, Surrey and operates as Big Orange Software Ltd. With over 15 years of app development, the agency has carved a niche in IoT-enabled mobile products, SaaS platforms, and systems integration for ambitious UK and international brands. Notable client work spans healthcare (OpenAir Med), property (LandTech — handling 1 in 10 UK house sales), construction (Caterpillar), consumer goods (Schwartz, Sheilas' Wheels), and cultural institutions (The British Museum). Sonin maintains additional offices in Edinburgh and Paris and positions itself as a product partner rather than a build shop, offering product strategy, UX/UI design, app development, systems integration, and ongoing product support.
Platforms, stack, and industries
Platforms
Tech stack
Industries
Also listed in
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Questions about Sonin
- Does Sonin work remotely?
- Sonin is headquartered in Reigate, United Kingdom. Remote delivery is listed as available on this profile. Timezone overlap and communication cadence usually matter more than the office city.
- Who owns the code after hiring Sonin?
- Clients retain full IP and source code. Work-for-hire engagement model standard.
- How current is this Sonin profile?
- Facts on this page were last reviewed 2026-09-18 from public materials. Rates and minimums can change — confirm a live quote on sonin.agency before you budget.
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