Comparison

Quazzl AI vs Slow Fluent

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

Head to head
About

Quazzl AI

Immerse yourself in interactive stories to learn new languages. Choose your own adventure, test your comprehension with quizzes, and improve pronunciation by listening to native speakers. Customize difficulty and explore various genres for a fun and engaging learning experience.

Highlights
  • AI-authored interactive stories
  • Choose story direction
  • Multiple-choice comprehension quizzes
  • Listen to sentence pronunciation
  • Adjustable difficulty levels
  • Multiple story genres
Features
Read full description

Learning a language has never been so much fun! Why settle for banal sentences when you can immerse yourself in exciting stories written according to your rules instead? * AI AUTHOR: Enjoy interactive stories in 56 languages! * YOUR CHOICE: Influence the story by choosing the direction of the story after each chapter! * TEST YOURSELF: Collect points with multiple-choice questions about the content of each chapter! * LISTEN: Listen to how to write a sentence so you can speak like a pro! * ADAPT: Customize your learning experience by adjusting the difficulty level! * YOUR STYLE: Genres like mystery, children's books, romance, science fiction and more! * COMPETITION: Track your progress and compete with others. Download Quazzl and start your language learning adventure today! Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Slow Fluent

Features
Read full description

Slow Fluent teaches you a new language in five focused minutes a day. Pick your language - Spanish, French, Italian, German, Portuguese, Japanese, Korean, Mandarin, Arabic, Hindi and twenty more - press play, and start answering. HOW A SESSION WORKS - Quick-fire rounds: see a picture or hear the word, then tap the right answer - Native-style audio on every word, so you learn the sound with the spelling - Wrong answers become learning moments: you see what you picked, what was correct, and the meaning - then the word comes back later in the session - Tricky words are flagged and repeat until you truly know them WHY IT STICKS - Spaced repetition brings each word back just before you would forget it - Words fade if you neglect them - Slow Fluent tells you exactly which ones to refresh - A daily streak and a five-minute goal make the habit effortless - Vocabulary is CEFR-graded, so you climb from A1 upward on real curriculum levels MORE THAN VOCABULARY Grammar, gender, connectors, collocations, false friends and common errors are woven into sessions as you progress - the details that make you sound natural, not just understood. 30 LANGUAGES AND COUNTING Spanish, French, Italian, Portuguese, Catalan, Romanian, German, Dutch, Swedish, Norwegian, Danish, Polish, Czech, Greek, Russian, Ukrainian, Turkish, Arabic, Hebrew, Hindi, Mandarin, Japanese, Korean, Vietnamese, Thai, Indonesian and more. Switch languages any time - your progress is kept per language. FREE, NO ADS Every language and every feature is free. No ads, no paywalls. An optional account (no email needed) syncs your streak and progress across devices. Five minutes. One streak. A language that finally sticks.

Screenshots

Quazzl AI4 screens
Slow Fluent4 screens

Verdict

The call

The clearest difference is price: Quazzl AI at Free against Slow Fluent's $4.99. Quazzl AI also leads on update cadence (every 2 days vs every 5 weeks) and iOS requirement (13.4 vs 15.0). Slow Fluent's advantage is in-app purchases (none vs 3). On 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

Quazzl AI is free to download; Slow Fluent costs $4.99 up front. Quazzl AI sells 3 in-app purchases, starting at $6.00 per month. Slow Fluent asks for nothing beyond the download.

UpkeepUpdate frequency

Quazzl AI ships an update every 2 days, Slow Fluent every 5 weeks. The most recent releases landed on November 4, 2026 and November 2, 2026 respectively.

Scorecard4 real differences · 6 level
Quazzl AI versus Slow Fluent: the parameters behind the verdict, then further details
ParameterQuazzl AISlow Fluent
PriceFree — better$4.99
Rating4.7 (95 ratings) — better—
Positive reviews59.5% of reviews—
Number of ratings95 — better—
Update frequencyEvery 2 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.4 — better15.0
Further details — not scored
Size40 MB2 MB
Age rating9+4+
Developerraffiniert media AGCharlie Sendrowski

Bugs and requests

Quazzl AI

Reported bugs

14 issues
  • Special offer for 3 days in a row not working
  • App not working properly
  • Cannot enter homepage
  • Accidental purchase of subscription
  • Refund request refused
Show 9 more
  • Developer claiming user wrote 5-star review initially
  • Developer ignoring emails and Instagram messages
  • Crash when clicking words to translate
  • Small stories crash after a few clicks
  • App keeps asking for name
  • App crashes from second chapter onwards when clicking paragraph translation
  • AI generated stories spit out gibberish English
  • Severe crashing
  • App is busted

Requested features

22 requests
  • Add way to contact developers
  • Fix issue with special offer for 3 days in a row
  • Make iPad-native version
  • Add ability to tap word and create flashcard
  • Improve voice to sound more native
Show 17 more
  • Add more languages in the future
  • Add male and female voice options
  • Add Cantonese pronunciation
  • Add word book to record words
  • Allow clicking on individual words for definition and pronunciation
  • Select one word for specific translation within sentence translation
  • Have voice speak out entire story without clicking sentences
  • Ability to stop and start story from any word
  • Option to delete unneeded AI stories
  • Add tools for full learning experience
  • Save unfamiliar words and review them
  • Track commonly used words for language learning levels
  • Add notification for moving to next level
  • Increase voice options and custom interface
  • Add "log in with email" option
  • Improve onboarding process
  • Fix app asking for name repeatedly

Slow Fluent

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Quazzl AI

Subscriptions2
  • Monthly Subscription$6.001 Month
  • Annual Subscription7 Days trial$60.001 Year
One-time1
  • Lebensdauer$199.99
None

Slow Fluent

No in-app purchases

Questions

Is Quazzl AI free?
Quazzl AI is free to download, with in-app purchases available.
Is Slow Fluent free?
Slow Fluent costs $4.99, with no in-app purchases.
Do Quazzl AI or Slow Fluent have ads?
Neither Quazzl AI nor Slow Fluent shows ads.
Which is updated more often, Quazzl AI or Slow Fluent?
Quazzl AI ships an update every 2 days, and Slow Fluent every 5 weeks. Most recently, Quazzl AI was updated on November 4, 2026 and Slow Fluent on November 2, 2026.

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