What Readlang does

Readlang is a private, bootstrapped language learning platform operated by Readlang SL, registered in Spain, and run as a single-founder business under the contact identity "Steve" ([email protected]). The company has been operating since 2011 and serves individual language learners globally, with cumulative usage of more than 550,000 users who have translated over 53.6 million words across more than 521,750 texts in 100+ languages. There are no disclosed funding rounds, no parent company, no subsidiaries, and no institutional investors.

The core product is a web-based reading application in which users click on words or phrases while reading to receive instant translations; translated words are automatically saved as flashcards for spaced-repetition practice. The product surface includes the main web app, a Web Reader browser extension (Chrome, Firefox, Safari, iOS, and Android), a Web Importer bookmarklet, and a Progressive Web App for mobile. AI-powered context-aware translations and explanations are delivered via OpenAI, and high-quality text-to-speech voices are generated through Microsoft Azure neural voice services. Supporting infrastructure runs on Linode (Akamai) with Stripe for billing, Google for sign-in and translation, AWS for transactional email, and Quaderno for EU tax compliance.

Readlang operates on a freemium subscription model with three tiers: Free (unlimited single-word translations with daily limits), Premium at $6/month or $48/year (unlimited phrase and context translations, high-quality Auto-Pronounce voices), and Premium Plus at $15/month or $120/year (more powerful AI plus high-quality Read Aloud voices for whole texts). Distribution is entirely self-serve and product-led across the website, browser extension stores, and mobile PWAs, with acquisition driven by content marketing (blog, YouTube), a Discourse community forum, organic search, and influencer word-of-mouth (notably Tim Ferriss's 5-Bullet Friday). Customer concentration is diffuse across individual learners, and there are no enterprise contracts or named institutional logos.

Name

Readlang

Legal name

Readlang SL

Website

https://readlang.com

Company type

Private

Founded year

2011

Operating status

Operating

Short description

Readlang is a bootstrapped, Spain-registered language learning platform serving individual learners globally with click-to-translate reading, automatic flashcard practice, and AI context explanations across 100+ languages, monetized via freemium subscriptions from $6 to $15 per month.

Ownership category

akta.pro rank

Headquarters

HQ city

Unknown

HQ country

Spain

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Software

Cost components

Technology or R&D, Operations, Personnel, Marketing or Sales

Revenue model

1. Subscription - Premium: Monthly or annual subscription removing daily limits on translations and adding context-aware translations and high-quality voices. Priced at $6/month or $48/year.
2. Subscription - Premium Plus: Top-tier subscription including all Premium features plus more powerful AI for context-aware features and high-quality voices for reading whole texts aloud. Priced at $15/month or $120/year.
3. Freemium Access: Free tier providing limited translations (10 phrase translations per day, 10 context explanations per day) with unlimited single word translations. Serves as user acquisition funnel for paid upgrades.

Pricing tiers

Go-to-market motion1 record

Distribution channels6 records

Marketing channels6 records

Core offering

Readlang is a web-based language learning platform that lets users learn vocabulary by reading authentic foreign-language text. Users can click any word for instant translation with AI-powered context explanations, and unknown words are automatically captured as flashcards reviewed via spaced repetition. The platform supports 100+ languages, integrates neural text-to-speech pronunciation, and is accessible via a web app, cross-browser Web Reader extensions, and a Web Importer bookmarklet.

Product overview

Readlang is a language learning platform built around reading-based learning. The core product is a web application where users read texts in their target language and click words to translate them instantly, with translated words automatically saved as flashcards for practice. The product portfolio includes: the main Readlang Language Learning App, the Web Reader Extension (Chrome browser plugin) for translating any webpage, the Web Importer Bookmarklet for importing articles, and a mobile-optimized web app accessible via home screen installation on iOS and Android. Premium tiers (Premium at $6/mo and Premium Plus at $15/mo) unlock unlimited translations, context-aware AI explanations, and high-quality text-to-speech voices. The ecosystem also includes a community Forum and a Blog for updates and tutorials.

Differentiator

Problem solved

Functional benefit

Products and services

• Readlang Language Learning App Web-based language learning application that lets individual learners read authentic foreign-language text, click any word for instant translation with AI-powered context explanations, and automatically capture unknown words into flashcards reviewed via spaced repetition across 100+ languages.
• Web Reader Browser Extension

Quantifiable outcome

• Users can progress from near-zero foreign language reading ability to intermediate or higher reading comprehension through consistent use

Named customers4 records

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

AI capability4 records

Feature6 records

Partnerships

Nine partnerships are on record, tiered core and supporting.

• StripecoreOthersPayment processing and subscription billing provider. Stripe handles all payment collection, subscription renewals, and stores card details. Readlang does not store full card numbers.
• GooglecoreTechnology or IntegrationProvides Google Sign-in authentication and Google Translate API for translating user lookup queries.
• OpenAIcoreTechnology or IntegrationAI features provider powering smart dictionary definitions and transcription of recorded audio for the language learning features.
• Microsoft AzurecoreTechnology or IntegrationProvides text-to-speech neural voice service for reading content aloud and auto-pronounce features. High quality voices are generated on Readlang's servers using Azure neural voice technology.
• Linode (Akamai)coreTechnology or IntegrationCloud hosting and storage provider. Readlang's servers, database, and user-stored content (including texts and audio recordings) reside on Linode infrastructure.
• Amazon Web ServicessupportingTechnology or IntegrationAWS is used for sending transactional emails (account and billing notifications) and optional practice reminder emails.
• QuadernosupportingOthersInvoicing and tax compliance service for handling EU VAT and generating invoices for subscriptions.
• RollbarsupportingTechnology or IntegrationError monitoring service to help diagnose and fix technical problems in the Readlang application.
• TrustpilotsupportingGTM or Marketing PartnerWhen users upgrade to a paid plan, their email is shared with Trustpilot so they can be invited to review the service. Part of Readlang's reputation management strategy.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Market position

Weaknesses5 records

Competitive moat5 records

Customer concentration

• Xx.com/Readlang
• YouTubeyoutube.com/watch?v=ntVQ2L5s6FI&list=PLIGa-eWCssj9K_PpNGLnIs8vcENanVx3_
• Facebookfacebook.com/readlang

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Readlang