Comparison

GetPrincipia vs Fluly

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

Head to head
About

GetPrincipia

Features
Read full description

Unlocking mathematical concepts with visuals, practice, progress tracking, study guides, and linking disciplines and topics across the field. Terms of Use: https://getprincipia.com/terms Privacy Policy: https://getprincipia.com/privacy

About

Fluly

Features
Read full description

STOP STUDYING. START EXPERIENCING. Are you tired of endless grammar drills and boring textbooks? It's time to learn a new language the natural way - the same way you learned your first one. Learn for free through immersion. Welcome to Fluly, the ultimate immersion tool that turns your favorite content into language lessons. Whether you want to polish up your French, understand anime in Japanese, or connect with your roots - with over 304+ languages, Fluly makes it effortless. This app isn't only for language learning nerds. Use it simply to consume media in other languages, or even your own native language. The goal is to enjoy the process. Language learning is like planting a seed. You don't force a tree to grow โ€” you give it the right conditions and let nature do the rest. Fluly works the same way. Immerse yourself in real movies, books, and games. Practice speaking with real people. Review vocabulary with smart flashcards. Every lesson is a drop of water. Every conversation, a ray of sun. Our mascot Plum isn't just cute โ€” he represents what your learning becomes. Nutritious. Rooted. Fruitful. Plant your first lesson today. WHY FLULY? Most apps force you to use their content. We let you use YOURS. Import the movies, videos, and books you actually enjoy, and let our tools handle the rest. KEY FEATURES: Import Any Content Bring your own movies (with subtitles), YouTube videos, eBooks, and articles into the app. Learn from content that actually interests you. Instant Definitions Never interrupt your flow state. Tap any word in a video or book for an immediate translation and definition. Story Mode with Cloze Fill Sharpen your listening and comprehension skills through interactive story-based exercises. Smart Flashcard System Forget basic memorization. Our integrated Spaced Repetition System (SRS) works like Anki but is built directly into your content player. We track what you know and remind you of words exactly when you're about to forget them. Championing African Languages We proudly support over 80 African languages, bridging the gap that most major language apps ignore. SUPPORTED MODES: Video Player with interactive subtitles eBook Reader with instant lookup Cloze fill comprehension exercises Flashcard Review Previously known as LinguaFlow โ€” same app, same progress, fresh new name. Your account and lessons are fully intact. Download Fluly today and reach fluency faster by doing what you love. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

GetPrincipia4 screens
Fluly4 screens

Verdict

The call

The clearest difference is update cadence: Fluly at every 2 weeks against GetPrincipia's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. GetPrincipia sells 2 in-app purchases, starting at $6.99 per month and Fluly sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

GetPrincipia ships an update every 2 months, Fluly every 2 weeks. The most recent releases landed on October 31, 2026 and November 13, 2026 respectively.

Scorecard1 real difference ยท 5 level
GetPrincipia versus Fluly: the parameters behind the verdict, then further details
ParameterGetPrincipiaFluly
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 weeks โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 โ€” better
Further details โ€” not scored
Size38 MB210 MB
Age rating4+4+
DeveloperAxiom 38 LLCEmmanuel Mambwe

In-app purchases

2 purchases

GetPrincipia

Subscriptions2
  • Monthly7 Days trial$6.991 Month
  • Annual7 Days trial$44.991 Year
3 purchases

Fluly

Subscriptions2
  • Monthly Premium$9.991 Month
  • 6 Months Premium$19.996 Months
One-time1
  • Lifetime Deal$99.99

Questions

Is GetPrincipia free?
GetPrincipia is free to download, with in-app purchases available.
Is Fluly free?
Fluly is free to download, with in-app purchases available.
Do GetPrincipia or Fluly have ads?
Neither GetPrincipia nor Fluly shows ads.
Which is updated more often, GetPrincipia or Fluly?
GetPrincipia ships an update every 2 months, and Fluly every 2 weeks. Most recently, GetPrincipia was updated on October 31, 2026 and Fluly on November 13, 2026.

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