Company lists · Data refreshed September 2026

Top 25 App development outsourcing companies based in San Francisco, United States

Name: App development outsourcing companies based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 366 companies tracked

RevenueBase identified 366 app development outsourcing companies headquartered in San Francisco, United States as of September 2026 and tracks 10,521 professional contacts across them, including 3,257 with verified work emails. Across the United States, New York is the largest hub for this category (845 companies); San Francisco has 366.

This list covers app development outsourcing companies headquartered in San Francisco, United States, 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 28, 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 28, 2026 86% judged on-target in blind review

366Companies

10,521Contacts tracked

3,257Verified emails

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The 25 largest app development outsourcing companies based in San Francisco, United States

Ranked by team size

Top 25 of 366 app development outsourcing companies based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to app development outsourcing 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	Bairesdev	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,186 contacts →
	Indirect evidence “BairesDev is your expert partner that works alongside clients to build high-quality software solutions with speed and precision.” Source: RevenueBase Database · checked Sep 28, 2026
2	Robosoft Technologies	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,097 contacts →
	Indirect evidence “Engineering the Experience that matter.” Source: RevenueBase Database · checked Sep 28, 2026
3	symphony.is	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	501-1,000	672 contacts →
	Partial evidence “Symphony is a global design and development software company headquartered in San Francisco with 650+ technologists located across engineering offices in Southeast Europe and…” Source: RevenueBase Database · checked Sep 28, 2026
4	LOKA	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	201-500	336 contacts →
	Indirect evidence “Loka is a Silicon Valley software consultancy with global impact, bringing innovations to market faster since 2004.” Source: RevenueBase Database · checked Sep 28, 2026
5	Arctouch	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	201-500	291 contacts →
	Partial evidence “ArcTouch helps companies of all sizes design and develop lovable apps and websites to forge meaningful connections with their customers.” Source: RevenueBase Database · checked Sep 28, 2026
6	Fluxon	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	201-500	200 contacts →
	Partial evidence “Fluxon is a San Francisco-based software development team trusted by Google, Anthropic, Stripe, and top startups with the technology work that matters most.” Source: RevenueBase Database · checked Sep 28, 2026
7	Siliconmint	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	179 contacts →
	Indirect evidence “SiliconMint provides dedicated software teams that architect, build and support mission-critical systems.” Source: RevenueBase Database · checked Sep 28, 2026
8	Cheesecake Labs	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	131 contacts →
	Indirect evidence “Cheesecake Labs is an AI, Data, Blockchain, and Software Engineering company that partners with US companies to build and modernize digital products.” Source: RevenueBase Database · checked Sep 28, 2026
9	Inverita	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	125 contacts →
	Indirect evidence “inVerita is a top-rated AI-enabled custom software and digital transformation partner specializing in healthcare, data engineering, cloud modernization, and regulated compliance…” Source: RevenueBase Database · checked Sep 28, 2026
10	MINDK	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	124 contacts →
	Partial evidence “MindK is a software development and IT consulting company that helps businesses build software products, automate business processes, modernize technology and infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026
11	Ensolvers	Strong evidence	San Francisco, United StatesHQ checked Sep 28, 2026	51-200	121 contacts →
	Strong evidence “Ensolvers specializes in software development, architecture, product development, outsourcing, testing, and building dedicated teams for end-to-end software solutions.” Source: RevenueBase Database · checked Sep 28, 2026
12	Coditude	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	108 contacts →
	Indirect evidence “Coditude stands out as a rapidly growing force in the digital realm, offering straightforward, impactful tech capabilities.” Source: RevenueBase Database · checked Sep 28, 2026
13	Mechlin Technologies	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	103 contacts →
	Partial evidence “Mechlin Technologies is a San Francisco, California (USA) based software development and technology consulting company, powered by a trusted offshore engineering team, helping…” Source: RevenueBase Database · checked Sep 28, 2026
14	RAW Engineering	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	97 contacts →
	Indirect evidence “Raw Engineering’s Innovative digital solutions and services are trusted by the world’s best Fortune 500 Enterprises, Sports & Entertainment companies and Startups to provide…” Source: RevenueBase Database · checked Sep 28, 2026
15	Solveit	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	95 contacts →
	Partial evidence “Building more than just apps.” Source: RevenueBase Database · checked Sep 28, 2026
16	Jetruby Agency	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	201-500	82 contacts →
	Partial evidence “JetRuby is an AI-native, ISO-certified software development agency.” Source: RevenueBase Database · checked Sep 28, 2026
17	Treinetic	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	79 contacts →
	Indirect evidence “Treinetic™ is a leading software product engineering and technology consulting company, recognized for its innovative and award-winning solutions.” Source: RevenueBase Database · checked Sep 28, 2026
18	Orangesoft	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	75 contacts →
	Partial evidence “Orangesoft is a full-cycle software development company that helps healthcare and fintech companies turn bold ideas into secure, scalable digital products.” Source: RevenueBase Database · checked Sep 28, 2026
19	Yellow Systems	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	73 contacts →
	Indirect evidence “Yellow Systems is a technology-first company creating AI/ML-powered and custom software solutions for diverse business needs.” Source: RevenueBase Database · checked Sep 28, 2026
20	Sudolabs	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	71 contacts →
	Indirect evidence “We are a go-to digital product-building studio dedicated to helping US startups and enterprises shape and build their product ideas and set up a long-term growth trajectory.” Source: RevenueBase Database · checked Sep 28, 2026
21	Smart IT	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	68 contacts →
	Partial evidence “Smart IT is a custom software development and web development company headquartered in San Francisco.” Source: RevenueBase Database · checked Sep 28, 2026
22	Willware Technologies	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	66 contacts →
	Partial evidence “Willware Technologies, an ISO 9001 and ISO 27001 certified company headquartered in Koramangala, Bangalore, with a presence in California, USA, is a dynamic software development…” Source: RevenueBase Database · checked Sep 28, 2026
23	Somnio Software	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	65 contacts →
	Partial evidence “We’re a Digital Product Agency you can grow with, globally recognized as a Top Flutter development company.” Source: RevenueBase Database · checked Sep 28, 2026
24	Span Digital	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	60 contacts →
	Indirect evidence “SPAN is a technical strategy and software engineering firm.” Source: RevenueBase Database · checked Sep 28, 2026
25	Interactive Labs, INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	51-200	58 contacts →
	Partial evidence “Interactive Labs provides quality iOS, Android and Services design and development services.” Source: RevenueBase Database · checked Sep 28, 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: app development outsourcing 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 app development outsourcing companies.
Partial evidence: Its own public description names part of app development outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name app development outsourcing 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 366 app development outsourcing companies based in San Francisco, United States

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App development outsourcing companies based in San Francisco, United States at a glance

As of Sep 28, 2026

31.0%Verified-email coverage

28.7Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

158

11-50

131

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 366 companies.

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 app development outsourcing 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 San Francisco, United States whose own description of what they do matches “app development outsourcing 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 app development outsourcing 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 app development outsourcing companies, and records with no verified work email. Companies headquartered outside San Francisco 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, 3,257 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 28, 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.

App development outsourcing companies by metro in the United States

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 app development outsourcing 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 app development outsourcing companies are there based in San Francisco, United States?

RevenueBase identified 366 app development outsourcing companies headquartered in San Francisco, United States 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?

Bairesdev, headquartered in San Francisco, tops this list with the largest team on record.

Which city in the United States has the most app development outsourcing companies?

New York leads the United States with 845 headquartered companies, followed by Austin (467) and San Francisco (366).

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 3,257 verified decision-maker contacts tracked across these 366 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 28, 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.