Company lists · Data refreshed September 2026

Top 25 Cross-platform app design companies based in London, United Kingdom

Name: Cross-platform app design companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 9, 2026 554 companies tracked

RevenueBase identified 554 cross-platform app design companies headquartered in London, United Kingdom as of September 2026 and tracks 5,151 professional contacts across them, including 336 with verified work emails and 441 with mobile numbers. London is the largest hub.

This list covers cross-platform app design companies headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 9, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 9, 2026 86% judged on-target in blind review

554Companies

5,151Contacts tracked

336Verified emails

441Mobile numbers

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The 25 largest cross-platform app design companies based in London, United Kingdom

Ranked by team size

Top 25 of 554 cross-platform app design companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 9, 2026. RevenueBase Smart Search rates how each company's information relates to cross-platform app design companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	KRIFY	Partial evidence	London, United KingdomHQ checked Sep 9, 2026	51-200	221 contacts →
	Partial evidence “Krify is a results-driven technology company specializing in crafting user-centric mobile apps, web applications, and software solutions.” Source: RevenueBase Database · checked Sep 9, 2026
2	Magora	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	51-200	213 contacts →
	Indirect evidence “Magora is an international software development company with 12 years of extensive experience in bespoke development outsourcing market.” Source: RevenueBase Database · checked Sep 9, 2026
3	Synycs Group	Partial evidence	London, United KingdomHQ checked Sep 9, 2026	201-500	132 contacts →
	Partial evidence “Incorporated in 2014 and headquartered in the UK, Synycs Group is a CMMI Level 4 industry-leading & most reliable software and mobile app development company known for delivering…” Source: RevenueBase Database · checked Sep 9, 2026
4	Turn UP Technologies	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	51-200	74 contacts →
	Indirect evidence “Turn Up Technologies is a digital growth IT firm headquartered in London, UK with offices across the Texas, UAE, Canada, and Pakistan.” Source: RevenueBase Database · checked Sep 9, 2026
5	Blockmob Labs	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	51-200	46 contacts →
	Indirect evidence “Blockmob Labs is a full-stack product engineering studio building production-grade software across Web3, AI, fintech, SaaS, mobile, and cloud infrastructure.” Source: RevenueBase Database · checked Sep 9, 2026
6	Limeup	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	42 contacts →
	Indirect evidence “Limeup is an application & software development company.” Source: RevenueBase Database · checked Sep 9, 2026
7	Avamae Software Solutions LTD	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	35 contacts →
	Indirect evidence “AVAMAE is a London-based product development agency, building bespoke mobile, software and web applications since 2011.” Source: RevenueBase Database · checked Sep 9, 2026
8	Kernelics	Partial evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	35 contacts →
	Partial evidence “Kernelics is a passionate team of web and mobile software developers, product managers, designers, and QA engineers.” Source: RevenueBase Database · checked Sep 9, 2026
9	Pocket APP	Partial evidence	London, United KingdomHQ checked Sep 9, 2026	51-200	31 contacts →
	Partial evidence “We are an independent mobile UI & UX app development company.” Source: RevenueBase Database · checked Sep 9, 2026
10	Zentix	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	30 contacts →
	Indirect evidence “ZentixSoft is a UK-based software development company helping businesses grow faster with AI, automation, and custom software.” Source: RevenueBase Database · checked Sep 9, 2026
11	Topdevs Corp	Partial evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	29 contacts →
	Partial evidence “Mobile & Web Digital Solutions for Startups & Businesses Count on TopDevs full-cycle mobile app and web development outsourcing services or hire the IT experts you need to augment…” Source: RevenueBase Database · checked Sep 9, 2026
12	Keytotech	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	22 contacts →
	Indirect evidence “At KeyToTech, we turn ideas into scalable software products.” Source: RevenueBase Database · checked Sep 9, 2026
13	NGOAR	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	51-200	21 contacts →
	Indirect evidence “Ngoar is a pioneering software solutions and technology company.” Source: RevenueBase Database · checked Sep 9, 2026
14	Techcurl Media Solutions	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	21 contacts →
	Indirect evidence “Techcurl is a leading agile development company specialising in Web and mobile development helping businesses deliver projects on time and budget.” Source: RevenueBase Database · checked Sep 9, 2026
15	Archnix	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	21 contacts →
	Indirect evidence “Archnix is a leading software & digital solution provider catering to a wide range of business needs in the global market.” Source: RevenueBase Database · checked Sep 9, 2026
16	Lloyds Knight International	Partial evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	21 contacts →
	Partial evidence “Lloyds Knight International brings together the best dedicated iOS, Android, and web app developers, so you can outsource your project and get a top-quality product.” Source: RevenueBase Database · checked Sep 9, 2026
17	Devsstream Limited	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	20 contacts →
	Indirect evidence “DevsStream provides software development solutions and services all over the world.” Source: RevenueBase Database · checked Sep 9, 2026
18	Smile Machine	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	19 contacts →
	Indirect evidence “We're digital innovators with a passion for everything mobile.” Source: RevenueBase Database · checked Sep 9, 2026
19	Softexpoit	Partial evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	18 contacts →
	Partial evidence “Softexpoit's team of experts combines technical expertise and creativity to develop custom software, mobile app, and web app solutions that meet your specific business/official…” Source: RevenueBase Database · checked Sep 9, 2026
20	APP Genie	Partial evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	17 contacts →
	Partial evidence “App Genie (appg.co) is a mobile app development agency founded in 2022, with its product team based in Istanbul, Türkiye.” Source: RevenueBase Database · checked Sep 9, 2026
21	Mettle Studio	Partial evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	16 contacts →
	Partial evidence “At Mettle, we specialise in digital product design and development that bridges the gap between design and engineering.” Source: RevenueBase Database · checked Sep 9, 2026
22	SAYPR	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	16 contacts →
	Indirect evidence “Saypr was founded in 2011 in New York and later incorporated in London, seeking to fulfill the increasing need of sophisticated digital solutions for companies, start-ups…” Source: RevenueBase Database · checked Sep 9, 2026
23	Apical IT Solutions LTD	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	15 contacts →
	Indirect evidence “Apical IT Solutions is a software technology company headquartered in London, United Kingdom (UK) with presence in India.” Source: RevenueBase Database · checked Sep 9, 2026
24	Prontx	Indirect evidence	London, United KingdomHQ checked Sep 9, 2026	11-50	15 contacts →
	Indirect evidence “ProntX isn't just software development, it's partnership in innovation.” Source: RevenueBase Database · checked Sep 9, 2026
25	Tallen	Strong evidence	London, United KingdomHQ checked Sep 9, 2026	51-200	15 contacts →
	Strong evidence “We are a full-service digital enterprise highly specialized in Web Development, Mobile App Development, UI/UX design, content writing, digital marketing and web/app maintenance…” Source: RevenueBase Database · checked Sep 9, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cross-platform app design companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cross-platform app design companies.
Partial evidence: Its own public description names part of cross-platform app design companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cross-platform app design companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 554 cross-platform app design companies based in London, United Kingdom

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Cross-platform app design companies based in London, United Kingdom at a glance

As of Sep 9, 2026

6.5%Verified-email coverage

8.6%Mobile-number coverage

9.3Average contacts per company

1-10Median size (employees)

97.7%Largest-city concentration · London

Sep 9, 2026Page data refreshed

Companies by employee count

1-10

337

11-50

186

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 11.0d

3070–30

2431–60

061–90

090–180

5180+

Company record updated

Median 75.0d

00–30

1,64631–60

2,66161–90

61890–180

226180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cross-platform app design companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “cross-platform app design companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cross-platform app design companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among cross-platform app design companies, and records with no verified work email. Companies headquartered outside London are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 336 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 9, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Cross-platform app design companies by metro in the United Kingdom

Cross-platform app design companies in London541
Cross-platform app design companies in Manchester57
Cross-platform app design companies in Birmingham32

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cross-platform app design companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cross-platform app design companies are there based in London, United Kingdom?

RevenueBase identified 554 cross-platform app design companies headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

KRIFY, headquartered in London, tops this list with the largest team on record.

Which city has the most cross-platform app design companies?

London leads with 541 headquartered companies, followed by Manchester (57) and Birmingham (32).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 336 verified decision-maker contacts tracked across these 554 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 9, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.