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67
BU Score
Solid

LanguageTool - Textkorrektur

4.8 ✍️ Editor
✍️ bumetric analysis

LanguageTool - Textkorrektur is an iOS app from LanguageTooler GmbH in the Productivity category, currently rated 4.8★ across 537 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Our BU Score puts it at 67: Solid (established niche player). For a Productivity app, that means established niche player.

Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

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Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
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💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 6 of 6 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Paid app ($0.00)METRIC
+$2,800
Excellent rating (4.8★)METRIC
+$2,200
highly recommendREVIEW
+$1,400
annoying adsREVIEW
−$1,100
Established app (5y old)METRIC
+$800
Early-stage install base (537 ratings)METRIC
+$400
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Aug 24
Sep 24
Mar 25
Oct 25
Feb 26

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 15 MB🔞 4+📱 iOS 14.5+🔖 v1.2.3🔄 updated 4y ago🌐 EN, FR, DE, ES📂 Productivity💰 Paid🚀 Launched 2021 (5y old)

📝 About this app

LanguageTool is your intelligent writing assistant for all common browsers, word processors, Windows, macOS and iOS.

Using state-of-the-art technology, LanguageTool finds more errors than comparable spell checkers and additionally enriches your texts with helpful grammar and style suggestions for more than 20 languages.

The importance of written communication is increasing, especially in times when working from home is more in demand. Ensure that your writing is proficient and professional at all times by using LanguageTool to prevent embarrassing spelling mistakes and to avoid colloquial phrases.

Studies have shown that impeccable grammar and sophisticated language use have a positive impact on your professional career. Don't ruin opportunities by making annoying typos.

- Grammar and style check: Get suggestions that enrich your text grammatically and stylistically
- Commas: LanguageTool reliably finds missing commas and helps to avoid misunderstandings
- Multilingual: Check texts in a variety of languages, including English, German, Spanish, Portuguese, and Dutch
- Language variants: LanguageTool distinguishes between common language variants, such as American English and British English, and provides customized suggestions
- Synonyms: Get synonym suggestions for commonly used words to add variety to your word choice
- Picky mode: Get even more suggestions to help you reliably check your texts for inappropriate phrases or colloquialisms
- Salutations and names: Detect misspelled names and salutations in emails before you send them out
- Number formats: Recognition and correction of common number formats such as IBAN or ISBN

## Mobile App

Use the LanguageTool mobile app to check your writing on the go. Whether you're writing a brief message to your friends, engaging on social media, or replying to an important business email. LanguageTool is your personal writing assistant, helping you to write clearer, better texts in more than 20 languages.

- Distraction-free writing environment for concentrated writing
- Save texts and notes for later
- Start checking texts directly from your home screen
- Open texts from many apps directly in LanguageTool Editor and share them as you please

## Keyboard

- Check your writing in any of your favorite apps by using the system-wide LanguageTool-Keyboard
- Get useful spelling, grammar and style suggestions
- Correct potential mistakes with just a touch
- For basic checking, no account is required

## iMessage Stickers

Be picky in all your conversations and use the fun LanguageTool Sticker pack for iMessage to emphasize perfect grammar and style.

## Privacy

Your privacy is important to us: by default, texts are sent to https://languagetool.org for correction via an encrypted connection. No account is required to use the Safari extension. We do not store your IP address. See https://languagetool.org/privacy for our privacy policy and https://languagetool.org/legal/terms for our terms of use.

Please send bug reports or questions to https://forum.languagetool.org/.

## Supported languages:

English (Australia, Canada, United Kingdom, New Zealand, South Africa, USA), French, German (Austria, Germany, Switzerland), Asturian, Belarusian, Breton, Catalan (also Valencian), Chinese, Danish, Dutch, Esperanto, Galician, Greek, Italian, Japanese, Khmer, Persian, Polish, Portuguese (Brazil, Portugal, Angola, Mozambique), Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Tagalog, Tamil, Ukrainian, Arabic

🆕 What's New · v1.2.3

Fixes a bug that caused the keyboard to crash when switching the language

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
LanguageTool - Textkorrektur
Developer
LanguageTooler GmbH
Bundle ID
org.languagetool.safari
App Store URL
Open in App Store
Category
Productivity
Content rating
4+
Languages
EN, FR, DE, ES

Company

Website
languagetool.org
Tagline
More than a Grammar Checker Free Grammar Checker
Description
Instantly check grammar, punctuation, and spelling errors with LanguageTool's AI-powered grammar checker. Enhance your writing in over 30 languages with ease.
Founded
2003
HQ / Address
Not found
Employees
Not found
Logo
OG image

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$1.9K/mo
Top-grossing rank
Outside top 100 in US Productivity
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
https://x.com/languagetool
LinkedIn
https://www.linkedin.com/company/languagetool
GitHub
https://github.com/languagetool-org/languagetool
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
facebook · github · instagram · linkedin · tiktok · twitter
Email
Not found
Phone
Not found
Contact page
Not found
About page
https://languagetool.org/about
📈Ratings growth537 ratings+53600% lifetimeShow 3-year history estimate ▾Mar 2021Mar 2024May 2026
Tracked (33 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.

Similar apps in Productivity

Full revenue analysis
Read the article-style breakdown for LanguageTool - Textkorrektur: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
Read deep-dive →