Comparison

Babel Browser vs fullmoon

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Babel Browser

Experience seamless bilingual reading and video subtitle translation with this browser's integrated AI-powered tool. It offers one-click translations for web pages, PDFs, and input boxes, making foreign language content accessible and understandable.

Highlights
  • One-click bilingual web page translation
  • AI-powered bilingual video subtitles
  • Real-time PDF and document translation
  • Multilingual input box translation
  • Mouse hover paragraph translation
  • Optimized for mainstream websites
  • Support for 10+ translation services
Features
Read full description

The Babel Browser comes built-in with "Immersive Translate" eliminating the need for additional extensions to enjoy the convenience of one-click bilingual reading, bilingual video subtitles, PDF translations, and more. "Immersive Translate" is a free, useful, highly acclaimed, AI-driven bilingual web page translation extension designed to effectively bridge the information gap. Key Features: Immersive Reading of Foreign Websites: By intelligently identifying and translating the main content area of web pages into a bilingual comparison, Immersive Translate offers a novel reading experience in foreign languages, hence the name "Immersive Translate." Immersive Video Browsing: Powered by AI, it supports bilingual subtitle translation for dozens of mainstream video sites including YouTube, Netflix, Coursera, and more. Powerful Input Box Translation: Transforms any webpage's input box into a multilingual translator, instantly unlocking a bilingual real-time conversation experience with tools like Google Search. Efficient Document Translation: One-click export of bilingual eBooks, along with real-time bilingual translation support for PDFs, subtitles, TXT files, and more. Innovative Mouse Hover Translation: Simply hover the mouse over any paragraph on any webpage, and the translation will immediately appear below the paragraph. Paragraphs are considered the smallest unit in the design philosophy of Immersive Translate, preserving their context so we can truly understand and learn foreign languages. Deep Customization and Optimization for Mainstream Websites: Optimized for Google, Twitter, Reddit, YouTube, Bloomberg, The Wall Street Journal, and other mainstream sites, ensuring smoother and more efficient searching, socializing, and information gathering. Full Platform Support: Besides all major desktop browsers, mobile devices also offer the same immersive translation experience, making bilingual browsing of social media like Twitter and Reddit easy. Support for 10+ Translation Services: Within Immersive Translate, you can choose from over 10 translation services such as Deepl, Microsoft Translate, Google Translate, Tencent Translate, and more, with the list continuously expanding. "Immersive Translate" is free to use, hoping everyone can effortlessly, pleasantly, and elegantly access the wealth of foreign language information on the internet without language barriers.

About

fullmoon

This app provides a private and offline way to interact with local large language models. It runs models directly on your device, optimized for Apple silicon, and is available across multiple Apple platforms. Personalize your experience and integrate with other apps via Shortcuts.

Highlights
  • Private LLM chat
  • Fully offline operation
  • On-device model execution
  • Cross-platform Apple support
  • Customizable themes and fonts
  • Shortcut integration
Read full description

the simplest way to use private LLMs: works fully offline and private when you don’t have internet. runs models on-device optimized for Apple silicon. works on every platform: iOS, iPadOS, macOS, visionOS personalize: adjust the theme, fonts, and system prompt in the app. Shortcut: chat with fullmoon or get an output from a local model to use with other actions. free, open source, private.

Screenshots

Babel Browser4 screens
fullmoon4 screens

Verdict

The call

The clearest difference is review sentiment: fullmoon at 78% against Babel Browser's 41%. fullmoon also leads on rating (4.4 vs 3.9) and in-app purchases (none vs 2). Babel Browser's advantage is iOS requirement (15.0 vs 17.6). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Babel Browser sells 2 in-app purchases, starting at $9.99 per month. fullmoon asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

fullmoon holds the better App Store score, 4.4 against 3.9. That said, the two scores are not equally well evidenced: fullmoon has 100 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 41% of Babel Browser's written reviews are positive against 78% of fullmoon's.

UpkeepUpdate frequency

Babel Browser ships an update every 4 weeks, fullmoon every 10 days. Both last shipped on October 7, 2026.

Scorecard7 real differences · 3 level
Babel Browser versus fullmoon: the parameters behind the verdict, then further details
ParameterBabel Browserfullmoon
PriceFreeFree
Rating3.9 (9 ratings)4.4 (100 ratings) — better
Positive reviews40.7% of reviews77.8% of reviews — better
Number of ratings9100 — better
Update frequencyEvery 4 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Vision Pro — better
Requires iOS15.0 — better17.6
Further details — not scored
Size233 MB30 MB
Age rating17+17+
DeveloperFunstory.ai limitedMainframe Computer, Inc.

Customer experience

Babel Browser

All ratings9 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews59 reviews
Positive40.7%
Neutral13.6%
Negative45.8%

fullmoon

All ratings100 ratings
Positive86.0%
Neutral3.0%
Negative11.0%
Written reviews81 reviews
Positive77.8%
Neutral4.9%
Negative17.3%

Bugs and requests

Babel Browser

Not enough reviews yet to summarise bugs or requests.

fullmoon

Reported bugs

2 issues
  • Incompatibility with iPhone SE2 and iPad Pro Gen3 despite supporting Metal 3
  • Deepseek models not working on some devices

Requested features

6 requests
  • Add support for saving/copying full chat conversations
  • Expand functionality through Shortcuts integration
  • Provide more advanced language models
  • Allow users to remove/delete downloaded models
  • Add support for attaching files and images
Show 1 more
  • Implement voice mode and customizable AI models

In-app purchases

2 purchases

Babel Browser

Subscriptions2
  • Monthly Pro3 Days trial$9.991 Month
  • Annual Pro3 Days trial$79.991 Year
None

fullmoon

No in-app purchases

Questions

Is Babel Browser free?
Babel Browser is free to download, with in-app purchases available.
Is fullmoon free?
fullmoon is free to download, with no in-app purchases.
Which has better reviews, Babel Browser or fullmoon?
fullmoon is rated higher. Babel Browser averages 3.9 out of 5 from 9 ratings, while fullmoon averages 4.4 from 100 ratings.
Do Babel Browser or fullmoon have ads?
Neither Babel Browser nor fullmoon shows ads.
Which is updated more often, Babel Browser or fullmoon?
Babel Browser ships an update every 4 weeks, and fullmoon every 10 days. Most recently, Babel Browser was updated on October 7, 2026 and fullmoon on October 7, 2026.

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