Top 17 Mobile App Localization Tools

In today's interconnected world, mobile app localization isn't just a nicety; it's increasingly a competitive necessity. When done right, it demonstrably helps applications improve their visibility and reach.  study by Distomo highlights the tangible upside: localizing apps, they found, resulted in a noteworthy 128% more downloads per country, alongside a 26% average increase in revenue for each country added via localization.

Given these statistics, it's perhaps unsurprising that mobile app developers and project managers are aware of the need for robust localization solutions. And, fortuitously enough, the tools available for this particular task have seen significant advancements, especially with the ascendancy of generative AI.

What follows is a curated list of what I consider the top mobile app localization tools, those essential for integrating localization into your development process and, ultimately, expanding your app's footprint into new regions and markets.

‍

‍

Bureau Works functions as a centralized localization hub, utilizing AI-augmented translation and real-time Quality Control (QC) to optimize workflows. This app localization tool emphasizes powerful collaboration and no-code integrations, making it easier to manage mobile app translation while ensuring the user experience is maintained across different devices and languages. It helps streamline the complex process of adapting app content and functionality to suit target markets.

• ‍Founded: 2017‍
• Users: Duolingo, Uber, Scaled Agile, Harley Davidson, Zendesk, and more.‍
• Integrations: Contentful, Drupal, Eloqua, Figma, GitHub, Marketo, and more.‍
• Pricing: Free plan available. Paid plans start at $38/month. 14-day free trial available

‍

‍

Centus is an all-around localization platform designed for ease of use, robust integrations, and extensive automation and customization. This app localization tool provides a comprehensive suite of features to streamline the entire localization workflow for mobile apps, helping reduce translation costs, cut time to market, and ensure high quality. It allows for organized content management by applying custom tags to items, which can then be synchronized to create resource files specifically for mobile applications.

• ‍Founded: 2022‍
• Users: Almaki Group, and more.‍
• Integrations: Figma, Jira, Salesforce, WordPress, Github, GitLab, Sketch, Bitbucket, and more.‍
• Pricing: Paid plans start at $145/mo, billed monthly or annually. Custom quotes available for large enterprises.
  

‍

ChatGPT, powered by OpenAI's large language models (LLMs) like GPT-4, offers highly customizable and human-like text generation capabilities directly applicable to localization. This tool helps with mobile app localization by rapidly generating draft translations, understanding cultural and contextual nuances for app store listings, and refining in-app content. Its interactive nature assists in tasks like keyword research for app store optimization and crafting culturally sensitive responses to user reviews.

• ‍Founded: 2022 (public release)‍
• Integrations: Primarily via OpenAI API for custom workflows; integrated into various platforms (e.g., Phrase, Microsoft Copilot).‍
• Pricing: Free tier, ChatGPT Plus ($20/month), ChatGPT Teams ($25-$30/user/month), ChatGPT Enterprise (custom pricing).

‍

Crowdin functions as a versatile, cloud-based localization management platform, significantly enhanced with Agentic AI for sophisticated translation assistance. This app localization tool supports continuous localization workflows, enabling real-time translation and delivery. Its capabilities include numerous app integrations for LQA reporting, seamless connections with platforms like Webflow and Shopify, improved import features, accelerated pre-translation, and precise cost estimates, showcasing its focus on automation and efficiency.

• ‍Founded: 2008‍
• Users: Microsoft, Reddit, Discord, GitLab, Spotify, Microsoft, eBay, Yelp, and more.‍
• Integrations: GitHub, GitLab, Bitbucket, Jira, Slack, VS Code, Android Studio, Figma, Adobe XD, Google Drive, Dropbox, Zendesk, and more.‍
• Pricing: Free plan available. Paid plans start at $50 per month, billed annually.

‍

‍

Lokalise remains a robust platform for managing app, game, or website translations, whether solo or collaboratively. It now heavily leverages AI for generating high-quality translations, offering advanced features like content-triggered workflows, enhanced GitHub Action integrations for reviewer assignments and custom PR metadata, and post-processing hooks. It continues to be developer-centric, providing inline translation suggestions, project chat, export webhooks, and an API, alongside over-the-air updates for seamless iOS and Android deployments.

• ‍Founded: 2016‍
• Users: Revolut, Starbucks, InVision, Adidas, Delivery Hero, Shopify, BMW, and more.‍
• Integrations: GitHub, Asana, Bitbucket, GitLab, Figma, Adobe XD, Sketch, Jira, Slack, Trello, Google Cloud, AWS, Contentful, and more.‍
• Pricing: Paid plans start at $120 per month, billed annually. Free 14 day trial. Custom quotes available for large businesses.

‍

‍

OneSky delivers end-to-end localization solutions, notably through its sophisticated multi-agent AI system. This app localization tool leverages multiple AI models and specialized agents to achieve highly accurate and context-aware translations for mobile apps and games. It helps streamline the localization process by pre-processing content, conducting automated quality assessment, and integrating with development pipelines to ensure continuous localization at scale, aiming for significant automation and cost savings.

• ‍Founded: 2010‍
• Users: Airbnb, Google, Facebook, Microsoft, Tumblr, HubSpot, and more.‍
• Integrations: GitHub, Jira, Slack, Zendesk, and custom API integrations.‍
• Pricing: Service-based, project quotes available. Translations start at $0.005 per word.
  

‍

Pairaphrase delivers a secure, cloud-based, AI-powered translation solution designed to reduce localization costs and turnaround times. This app localization tool integrates with mobile apps and other systems via API to provide real-time, high-quality translations. It helps improve accuracy and consistency by reusing previously approved content through its advanced translation memory and refines translations through adaptive AI, making it suitable for sensitive or proprietary content requiring fast, secure multilingual communication.

• ‍Founded: 2014‍
• Users: APACC, Delphi, Johnson Controls, Chubb, Polestar, MCI, and more.‍
• Integrations: Microsoft Office, Google Workspace, and more.‍
• Pricing: Subscription plans start at $285/mo and short-term packages start at $199.
  

‍

Phrase offers a comprehensive, AI-augmented localization platform across its suite of products. This app localization tool improves translation efficiency by optimizing translation memory usage and automating quality checks. It provides solutions for consistent content across iOS and Android apps and automates content transfer from various design and development environments. The platform also enables real-time deployment of localized content to mobile apps without requiring new app store releases.

• ‍Founded: 2012 (as PhraseApp, now part of Phrase)‍
• Users: Bosch, Rocket Internet, Jimdo, Uber, Siemens, Huawei, Volkswagen, and more.‍
• Integrations: GitHub, GitLab, Bitbucket, Figma, Sketch, Adobe XD, Jira, Slack, HubSpot, WordPress, Salesforce, and a vast API.‍
• Pricing: Plans start at $27 per user per month, billed annually
  

‍

POEditor is a user-friendly platform for managing localization files, featuring enhanced AI translation and streamlined workflow automation. This app localization tool helps with mobile app localization by allowing developers to manage strings for both iOS and Android within the same project, organizing content with tags, and leveraging translation memory to ensure consistency. It provides direct integrations with development platforms and machine translation services for quick and accurate updates.

• ‍Founded: 2010‍
• Users: IKEA, Adidas, Ubisoft, Lufthansa, and more‍
• Integrations: Claude, Gemini, OpenAI, WordPress, Azure DevOps, Bitbucket, GitHub, GitLab, Figma, DeepL, Gengo, Google Translate, TextMaster, Amazon S3, Azure Blob Storage, Google Cloud Storage, and more.‍
• Pricing: Free plan available with limited features. Paid plans start at $12.74 per month, billed annually.
  

‍

Shuttle, an open-source tool developed by Square, functions as a continuous integration system for managing translations within development workflows. It streamlines mobile app localization by automatically extracting and reintegrating translatable strings from codebases. It supports developer-initiated and API-driven processes, enabling parallel work and providing a clear overview of translation progress, making it a valuable choice for teams seeking an integrated, custom-tailored solution within their CI/CD pipelines.

• ‍Founded: 2013 (developed by Square)‍
• Users: Developers and engineering teams, particularly those using Square's ecosystem or similar CI/CD pipelines.‍
• Integrations: GitHub, command-line tools, and custom API integrations.‍
• Pricing: Free (open-source).
  

‍

Smartcat uniquely combines localization technology with a vast freelance marketplace. This tool streamlines mobile app localization by offering effortless integrations with app repositories for Android, iOS, and Java, enabling automated AI translation. It reduces costs by leveraging machine translation and translation memory, and provides access to a large network of human reviewers for quality assurance, all within a collaborative workspace that eliminates manual administrative tasks.

• ‍Founded: 2016‍
• Users: expondo, SmithNephew, Stanley Black & Decker, Intradiem, Babbel, Wunderman Thompson, and more.‍
• Integrations: Jira, Slack, Google Drive, Dropbox, Salesforce, WordPress, Shopify, Drupal, and more.‍
• Pricing: Plans start at $99/month. 15-day free trial available
  

‍

Smartling is a leading translation management platform designed to streamline app localization at the speed of business. This app localization tool directly addresses mobile app content challenges by providing translators with visual context, allowing them to preview translations within the app's user interface to ensure proper fit and design. It supports seamless integration with code repositories, automating content transfer for translation and enabling rapid deployment of localized updates while providing analytics for quality and cost optimization.

• ‍Founded: 2009‍
• Users: Canva, IHG, Hootsuite, Talkdesk, Therabody, Coinbase, Lyft, and more.‍
• Integrations: Adobe Creative Cloud, Adobe Experience Manager, Bitbucket, Braze, Contentful, Drupal, Figma, GitHub, GitLab, Google Drive, HubSpot, Jira, Shopify, Sitecore, Slack, WordPress, Zendesk, and more.‍
• Pricing: Custom pricing based on product tiers (Core and Enterprise)

‍

Text United offers an AI-powered translation platform that complements professional human translation services. This app localization tool supports mobile app localization by streamlining the entire process, allowing for the management of user interface and in-app content. It integrates with development environments to automate content transfer and ensures consistency through translation memory and terminology management, making localization a seamless part of the development cycle.

• ‍Founded: 2010‍
• Users: Accredible, Rosenbauer, iStaging, Ten Group, and more.‍
• Integrations: GitHub, Bitbucket, SharePoint, Figma, Outlook, Zendesk, WordPress, Webflow, Drupal, Weebly, and more.‍
• Pricing: Paid plans start at €599/month. Custom packages available upon request.

‍

Transifex specializes in automating the localization process for digital products, emphasizing continuous delivery. This app localization tool provides advanced automated localization capabilities, automatically evaluates translation quality, and adapts content to match brand voice across large volumes. It supports mobile app localization by enabling parallel work between developers and translators, streamlining content management, and facilitating quick, real-time updates of localized strings in applications.

• ‍Founded: 2009‍
• Users: Atlassian, Eventbrite, Insightly, Prezi, Quora, Trello, Waze, Eventbrite, and more.‍
• Integrations: GitHub, Bitbucket, Jenkins, GitLab, Jira, Slack, Zendesk, Figma, Contentful, Salesforce, HubSpot, WordPress, and more.‍
• Pricing: Plans start at $120 per month with two months free, billed annually. Custom solutions for enterprises available.
  

Weglot offers an intuitive, no-code solution primarily for website translation, but its underlying technology and ease of use are also relevant for simpler mobile app localization needs. This tool instantly detects content, provides AI-powered machine translations, and allows for extensive human editing and quality control. It helps achieve global reach by offering quick deployment of translated content, managing language-specific URLs, and handling metadata, streamlining the process for developers and small businesses.

• ‍Founded: 2016‍
• Users: Small to medium-sized businesses, e-commerce stores, web developers, content managers.‍
• Integrations: WordPress, Shopify, Webflow, Squarespace, Wix, JavaScript, BigCommerce, WooCommerce, and various other CMS platforms.‍
• Pricing: Free plan available with limited features. Paid plans start at €15/mo or €12.5/mo if paid annually. 14 day free trial available
  

Wordbee provides an AI-driven localization management platform tailored for Language Service Providers (LSPs), game localization, and life sciences. This app localization tool helps with mobile app localization by offering robust project management, efficient reuse of translated content, and precise terminology control. Its AI capabilities enhance efficiency and accuracy for various specialized content types, allowing for flexible workflows and consistent quality across projects.

• ‍Founded: 2008‍
• Users: LSPs, global enterprises, gaming studios, life science companies.‍
• Integrations: GitHub, Jira, Slack, WordPress, Adobe Experience Manager, Drupal, and more.‍
• Pricing: Paid plans start at €600/month. Custom quotes tailored to client needs also available.
  

XTM International offers a comprehensive, cloud-based localization platform engineered for enterprise-level demands. This app localization tool helps with mobile app localization by providing visual context for translators, allowing them to see how text will appear in the app's UI to prevent layout issues. It integrates directly with developer environments to automate the transfer of new content for translation and supports continuous workflows to ensure rapid and high-quality localized app releases.

• ‍Founded: 2002‍
• Users: Johnson Controls, Tilde, Textinovas, Global Arena, Ricoh, Farfetch, Volvo, and more.‍
• Integrations: Jira, Slack, Salesforce, SAP, various CMS platforms, API available, and more.‍
• Pricing: Enterprise-grade, custom quotes required.