Comparison

PopStudy vs Project Fluency™

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

Head to head
About

PopStudy

Master any subject with this educational app utilizing a spaced repetition system. Create custom study mixes, engage in personalized sessions, and track your learning progress. Access curated content and study offline on your devices.

Highlights
  • Spaced repetition system
  • Curated expert content
  • Customizable study mixes
  • Personalized daily sessions
  • Progress tracking
  • Cross-device syncing
  • Offline studying
Features
Read full description

PopStudy — Master Spanish, French, or Chinese Most language apps teach you to dabble. PopStudy is built for learners who want to actually master a language — to read, write, listen, and speak with real fluency. Three languages. Curriculum-grade content. An AI coach that sharpens your skills. How does it work? Have you ever found yourself unwittingly singing the words to a song that's played over and over on the radio? That's spaced repetition at work. Research shows our brains transform repeated information into real knowledge, very quickly. PopStudy uses a scientifically-tuned spaced repetition engine to help you achieve fluency in record time — training you to recognize the nuanced sounds, patterns, and rhythms that are the building blocks of any language. What's inside: - A scientifically-tuned spaced repetition engine that gets vocabulary and grammar to stick — faster than streak-based apps. - An expert-curated library of lessons in Spanish, French, and Chinese, charting a path for everyday learners, plus ACTFL-aligned paths for school programs. - Custom AI lessons on any topic you choose — from job interview prep to vocabulary from your favorite TV shows — generated on demand. - A 24/7 AI coach to answer your questions and target your learning goals. - Listening, reading, speaking, and writing activities — comprehension drills built on native-speaker audio, pronunciation practice with instant feedback, spelling drills, and role-play scenarios. - Daily performance reports that show your strengths and weaknesses, so you always know how far you've come and where you need to go next. - Cross-platform sync across iPhone, iPad, and the web. Pick up where you left off. PopStudy is built for serious learners — students preparing for AP Spanish, AP French, or HSK Chinese exams; professionals working toward fluency; heritage speakers reconnecting with a family language; and anyone ready to go beyond beginner streaks. Have fun speaking your new language with confidence — you'll amaze yourself and the people around you. Download PopStudy and start mastering your language today. PopStudy Premium is an auto-renewable subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://popstudy.com/privacy_policy

About

Project Fluency™

Practice real-world conversations with AI characters that remember your mistakes and adapt to your learning style. Improve fluency in five languages with native accents and cultural context.

Highlights
  • AI characters with memory
  • Real-time grammar correction
  • Adaptive practice modes
  • Voice-first learning
  • Regional accents and slang
  • Progress analysis
Features
Read full description

People learn a language by living in it. Project Fluency lets you live in one from home. Every language comes with its own city: Spanish in Mexico City, French in Paris, Italian in Rome, Portuguese in Rio, English in Chicago. You talk out loud, at your level, with the people who live there: AI characters with jobs, accents and opinions, who remember you from one conversation to the next. You work shifts in their town, read the news, listen to songs. And after every conversation, you see exactly what to fix. THE PEOPLE IN TOWN A market seller in Mexico City who will teach you to haggle. A barber in Rome with a story for every haircut. A bartender in Paris who will happily argue philosophy. A cook in Buenos Aires who runs her kitchen like a general. Every language has its own characters in its own city, each with a job, an accent and opinions of their own. Learning English? Rehearse a visa interview, a job interview, or a meeting with your team. ASK FOR WHAT YOU NEED In the middle of a conversation, just say it: slower, please. Say that again. What does that word mean? Correct me more. Can we practice for my interview? Between conversations, send them a message. They remember you. SEE WHAT TO FIX - After each conversation, the character leaves you a short note with one thing to work on. - Hear your own mistake in your own voice, then hear it said right. - What you struggled with comes back on its own: in your next conversation, a short lesson, a story or a game. No lists to keep. PRACTICE BETWEEN CONVERSATIONS Short lessons built from your own mistakes, each with a quick quiz. Audio stories, the day's news rewritten at your level, original songs and city guides. Movies in some languages. And games set in the city: run a hotel front desk, serve at a café or play bingo night, using what you've been practicing. LIVE CLASSES WITH REAL TEACHERS Book a one-to-one video class. Your teacher reads a summary of your conversations first, so class starts where you get stuck. Live classes are in Spanish for now. KNOW YOUR LEVEL Take a spoken level check with an AI examiner whenever you're ready, from beginner to upper-intermediate. Pass, and your new level is recorded with the date. NO STREAKS, NO PRESSURE Your progress is the time you actually spent speaking. Miss a day or a month and nothing is lost. FULL IMMERSION One switch moves everything into the language you're learning: your conversations, your notes, your questions. Like waking up abroad. EVERY LANGUAGE IN EVERY PLAN Spanish, French, Italian, Portuguese and English are all included, whichever plan you choose. The app itself works in any of them too. HONEST ABOUT AI The characters are AI, with generated voices. Before your first conversation, the app explains what happens to your voice and your words, and asks for your agreement. The live teachers are real people. PLANS Project Fluency is free to start. Tourist and Local are monthly subscriptions that give you more time to talk and message, and more replays of your mistakes. Payment is charged to your Apple ID when you confirm. A subscription renews each month unless you turn it off at least 24 hours before the period ends. Manage or cancel it in your App Store account settings. Terms of Use and Privacy Policy: https://projectfluency.com/legal

Screenshots

PopStudy4 screens
Project Fluency™4 screens

Verdict

The call

The clearest difference is ads: PopStudy at none against Project Fluency™'s shown. PopStudy also leads on update cadence (fortnightly vs every 3 months) and monetization model (ad-supported vs free with in-app purchases). Project Fluency™'s advantage is iOS requirement (15.1 vs 18.0). On price, rating, review sentiment and ratings volume 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. PopStudy sells 9 in-app purchases, starting at $7.49 per month and Project Fluency™ sells 4 in-app purchases, starting at $17.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for PopStudy against 5.0 for Project Fluency™. Both are backed by a comparable volume of ratings — 9 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

PopStudy ships an update fortnightly, Project Fluency™ every 3 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

Scorecard4 real differences · 6 level
PopStudy versus Project Fluency™: the parameters behind the verdict, then further details
ParameterPopStudyProject Fluency™
PriceFreeFree
Rating4.9 (9 ratings)5.0 (5 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings9 — better5
Update frequencyFortnightly — betterEvery 3 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.015.1 — better
Further details — not scored
Size152 MB77 MB
Age rating4+12+
DeveloperLongtail StudiosProject Fluency, Inc.

Customer experience

PopStudy

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Project Fluency™

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

9 purchases

PopStudy

Subscriptions6
  • Student Monthly7 Days trial$7.491 Month
  • Personal Monthly7 Days trial$14.991 Month
  • Family Monthly7 Days trial$19.991 Month
Show 3 more
  • Student Yearly7 Days trial$47.901 Year
  • Personal Yearly7 Days trial$95.901 Year
  • Family Yearly7 Days trial$167.991 Year
One-time3
  • 1-Month Subscription$7.99
  • 3-Month Subscription$19.99
  • 1-Year Subscription$59.99
4 purchases

Project Fluency™

Subscriptions2
  • Tourist$17.991 Month
  • Local$34.991 Month
One-time2
  • Coffee Chat$3.99
  • One Way Ticket$179.99

Questions

Is PopStudy free?
PopStudy is free to download, with in-app purchases available.
Is Project Fluency™ free?
Project Fluency™ is free to download, with in-app purchases available.
Which has better reviews, PopStudy or Project Fluency™?
Project Fluency™ is rated higher. PopStudy averages 4.9 out of 5 from 9 ratings, while Project Fluency™ averages 5.0 from 5 ratings.
Do PopStudy or Project Fluency™ have ads?
Project Fluency™ shows ads; PopStudy does not.
Which is updated more often, PopStudy or Project Fluency™?
PopStudy ships an update fortnightly, and Project Fluency™ every 3 months. Most recently, PopStudy was updated on November 1, 2026 and Project Fluency™ on October 26, 2026.

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