Company lists · Data refreshed September 2026

Top 25 App localization companies based in Spain

Name: App localization companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 115 companies tracked

RevenueBase identified 115 app localization companies headquartered in Spain as of September 2026 and tracks 1,393 professional contacts across them, including 144 with verified work emails. Madrid is the largest hub.

This list covers app localization companies headquartered in Spain, 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 19, 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 19, 2026 86% judged on-target in blind review

115Companies

1,393Contacts tracked

144Verified emails

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The 25 largest app localization companies based in Spain

Ranked by team size

Top 25 of 115 app localization companies based in Spain, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to app localization 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	Localsoft, S.L	Partial evidence	Málaga, SpainHQ checked Sep 19, 2026	51-200	128 contacts →
	Partial evidence “Localsoft is a world-class, one-stop localization service provider with more than 30 years of experience in localizations.” Source: RevenueBase Database · checked Sep 19, 2026
2	Idisc Information Technologies	Indirect evidence	Olesa De Montserrat, SpainHQ checked Sep 19, 2026	51-200	96 contacts →
	Indirect evidence “iDISC is your premier partner for global communication solutions.” Source: RevenueBase Database · checked Sep 19, 2026
3	ATLS	Partial evidence	Barcelona, SpainHQ checked Sep 19, 2026	51-200	89 contacts →
	Partial evidence “ATLS is the strategic partner that drives business expansion into international markets, combining advanced technology, content localization, and multilingual digital marketing.” Source: RevenueBase Database · checked Sep 19, 2026
4	Cpsl Language Services	Indirect evidence	Hospitalet De Llobregat, SpainHQ checked Sep 19, 2026	51-200	64 contacts →
	Indirect evidence “CPSL helps companies all over the world to communicate with existing and potential customers in their own language.” Source: RevenueBase Database · checked Sep 19, 2026
5	Perfect Sound	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	60 contacts →
	Partial evidence “We are Perfect Sound, the last independent localization vendor in Spain.” Source: RevenueBase Database · checked Sep 19, 2026
6	DLM International	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	59 contacts →
	Indirect evidence “With over 20 years of experience, we have localized more than products into different languages for leading publishers and developers in the video game industry.” Source: RevenueBase Database · checked Sep 19, 2026
7	Bigtranslation	Indirect evidence	Moncada, SpainHQ checked Sep 19, 2026	11-50	32 contacts →
	Indirect evidence “BigTranslation is a translation agency tailored to the needs of the digital sector, and e-commerce in particular.” Source: RevenueBase Database · checked Sep 19, 2026
8	Beluga Linguistics	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	27 contacts →
	Partial evidence “Beluga is a company founded in 2006 that specializes in providing internationalization and localization solutions to fast-growing technology and Fortune 500 companies, with a…” Source: RevenueBase Database · checked Sep 19, 2026
9	Ampere Translations	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Ampere Translations is a language service provider that helps businesses improve their global impact through carefully localized communications and storytelling, adapting their…” Source: RevenueBase Database · checked Sep 19, 2026
10	Betranslated	Indirect evidence	Valencia, SpainHQ checked Sep 19, 2026	1-10	19 contacts →
	Indirect evidence “At BeTranslated, we remain committed to delivering language services that strengthen global collaboration and help organizations communicate with clarity and confidence.” Source: RevenueBase Database · checked Sep 19, 2026
11	Zinacle	Partial evidence	Badajoz, SpainHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Whether you are entering the global market for the first time or already manage a complex localization process, Zinacle has the resources to help you succeed in local markets…” Source: RevenueBase Database · checked Sep 19, 2026
12	Transocean Translation Group	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	1-10	15 contacts →
	Indirect evidence “Traspasar barreras lingüísticas y culturales para comunicar es nuestra especialidad.” Source: RevenueBase Database · checked Sep 19, 2026
13	Zesauro Traducciones	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	1-10	13 contacts →
	Indirect evidence “Zesauro Traducciones is a young dynamic company launched in March 2002.” Source: RevenueBase Database · checked Sep 19, 2026
14	Tradnologies	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “TRADNOLOGIES is a Language Services Provider based in Barcelona and integrates a core in-house team of Project Managers, Translators, Localisers, Testers and QA professionals with…” Source: RevenueBase Database · checked Sep 19, 2026
15	Lexic Language Solutions	Indirect evidence	Castelldefels, SpainHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “At LEXIC Language Solutions we provide comprehensive language services to international and national businesses and organisations.” Source: RevenueBase Database · checked Sep 19, 2026
16	Undertow	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	1-10	9 contacts →
	Indirect evidence “Accelerate the international growth of your B2B SaaS with Undertow Focus on what you do best-delivering exceptional software.” Source: RevenueBase Database · checked Sep 19, 2026
17	Tarkin Studios	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	1-10	8 contacts →
	Partial evidence “Tarkin Studios is a mobile app publisher and developer that brings great games and apps to market successfully.” Source: RevenueBase Database · checked Sep 19, 2026
18	MSS	Partial evidence	Barcelona, SpainHQ checked Sep 19, 2026	201-500	6 contacts →
	Partial evidence “MSS provides professional translation and localization, video and e-Learning services to companies all over the world to help them to compete and grow in global markets.” Source: RevenueBase Database · checked Sep 19, 2026
19	Decody	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “Welcome to Decody!” Source: RevenueBase Database · checked Sep 19, 2026
20	Assertio Language Services	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “ASSERTIO provides professional language services to help companies to sell their products and services in other languages and markets.” Source: RevenueBase Database · checked Sep 19, 2026
21	Mediateo	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “MEDIATEO is the fastest growing translation and multi-lingual content production agency directed at internet, mobile and software companies.” Source: RevenueBase Database · checked Sep 19, 2026
22	Swift Lingua	Indirect evidence	Carrizo, SpainHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “TRANSLATION Tailored and swift!” Source: RevenueBase Database · checked Sep 19, 2026
23	Kobalt Languages	Partial evidence	Granollers, SpainHQ checked Sep 19, 2026	11-50	3 contacts →
	Partial evidence “We provide professional translation, localization, interpretation and linguistic validation services in more than 100 languages thanks to our network of vetted professionals.” Source: RevenueBase Database · checked Sep 19, 2026
24	Next Level Localization	Partial evidence	Murcia, SpainHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Next Level Localization was founded by Felipe Mercader in order to provide game localization services!” Source: RevenueBase Database · checked Sep 19, 2026
25	Traditori	Partial evidence	Barcelona, SpainHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “We’re a team of professionals specializing in content translation and localization.” Source: RevenueBase Database · checked Sep 19, 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 localization 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 localization companies.
Partial evidence: Its own public description names part of app localization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name app localization 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 115 app localization companies based in Spain

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App localization companies based in Spain at a glance

As of Sep 19, 2026

10.3%Verified-email coverage

12.1Average contacts per company

1-10Median size (employees)

23.5%Largest-city concentration · Madrid

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 115 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 localization 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 Spain whose own description of what they do matches “app localization 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 localization 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 localization companies, and records with no verified work email. Companies headquartered outside Spain 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, 144 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 19, 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 localization companies by metro

App localization companies in Madrid27
App localization companies in Barcelona26

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 localization 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 localization companies are there based in Spain?

RevenueBase identified 115 app localization companies headquartered in Spain 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?

Localsoft, S.L, headquartered in Malaga, tops this list with the largest team on record.

Which city has the most app localization companies?

Madrid leads with 27 headquartered companies, followed by Barcelona (26) and Granada (4).

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 144 verified decision-maker contacts tracked across these 115 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 19, 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.