Comparison

Superfluent vs Sentence Lab

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

Head to head
About

Superfluent

This app helps you improve conversational fluency in various languages through simulated real-world scenarios. It provides instant feedback on pronunciation and vocabulary, tracks your progress, and offers cultural and grammatical insights. Practice speaking without the pressure of real-life interactions.

Highlights
  • Real-world conversation practice
  • Hundreds of interactive scenarios
  • Real-time pronunciation feedback
  • Vocabulary and grammar suggestions
  • Progress tracking with Fluency Score
  • Tutor for questions and cultural context
Read full description

Explore real cities, and practice hundreds of real-world conversations: Superfluent is the most immersive way to learn a language. You’ll master new skills, get instant feedback, and experience speaking a language where it’s actually lived. Stop studying. Start exploring. Real conversations, real places: * Language immersion from the comfort of your couch. Practice the moments you’ll actually face in real life - as if you were really there. Hundreds of scenarios: * Follow curated routes to build new skills, or explore the map to practice speaking all around a country. 24/7 Language Tutor: * Get instant, thoughtful feedback, and help as you explore. Improve your pronunciation, phrasing, and confidence in real time to level-up your language skills faster than ever before. Make visible progress: * Track your progress on the map as you complete curated learning routes and visit the most interesting places in France, Germany, Spain, etc. Build confidence quickly * Get comfortable in real scenarios without the stress - the closest thing to being there in real life. Download the app for free today and practice speaking any of the following languages: Spanish (Mexico and Spain), English (England and the USA), French, German, Italian, Portuguese (Brazil and Portugal), and more languages will be coming soon. You can upgrade to Superfluent Pro or stick with the free version of the app instead. It's up to you. Either way, we're here to help you reach your fluency goals. ---------------- Superfluent Pro Subscription: By subscribing to Superfluent Pro, you'll have unlimited access to all Superfluent content. We have monthly and annual plans for the Superfluent Pro subscription. We also offer a Family Plan subscription if you want to share Superfluent Pro with up to 5 other people. Your Apple account will be charged for payment when you confirm the start of your subscription. The subscription will automatically renew unless canceled at least 24 hours before the end of the current billing cycle. You can cancel the renewal at any time by going to the settings in your Apple account. Terms of Service: https://superfluent.com/terms Privacy Policy: https://superfluent.com/privacy

About

Sentence Lab

Features
Read full description

Sentence Lab helps you build real Spanish fluency by practicing complete sentences, not just flashcards. HOW IT WORKS • See an English sentence • Type the Spanish translation • Get instant feedback • Learn from your mistakes with helpful explanations SMART LEARNING Sentence Lab uses spaced repetition to optimize your learning. Sentences you struggle with appear more often, while mastered content is spaced out for efficient long-term retention. FEATURES • 1,500+ carefully crafted sentences from A1 to C1 level • Spaced repetition that adapts to your progress • Grammar reference guides • Travel vocabulary reference and flashcards • Detailed statistics to track your improvement • Daily streak to keep you motivated • Accent keyboard for easy Spanish character input • Easy mode with word bank for beginners • Custom content creation for premium users • Scenario conversations for premium users • Offline practice support PRACTICE MODES • New Sentences - Learn fresh content • Review - Practice sentences due for review • Mixed - A balanced variety • Weak Areas - Focus on challenging sentences • My Content - Create your own custom content to practice Build real Spanish fluency, one sentence at a time.

Screenshots

Superfluent4 screens
Sentence Lab4 screens

Verdict

The call

The clearest difference is update cadence: Superfluent at every 5 days against Sentence Lab's every 6 weeks. Superfluent also leads on chart position (#117 vs unranked). On price, ads, in-app purchases 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. Superfluent sells 12 in-app purchases, starting at $10.99 per month and Sentence Lab sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Superfluent ships an update every 5 days, Sentence Lab every 6 weeks. The most recent releases landed on September 29, 2026 and September 23, 2026 respectively.

Scorecard2 real differences · 9 level
Superfluent versus Sentence Lab: the parameters behind the verdict, then further details
ParameterSuperfluentSentence Lab
PriceFreeFree
Rating4.9 (3.2K ratings) — better—
Positive reviews93.1% of reviews—
Number of ratings3.2K — better—
Update frequencyEvery 5 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
Best chart rank#117 — better—
DevicesiPhoneiPhone, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size103 MB43 MB
Age rating4+4+
DeveloperSuperfluent, Inc.JEFFREY ROBERT SANCHEZ

Bugs and requests

Superfluent

Reported bugs

1 issue
  • Volume issue when trying to pronounce individual words

Requested features

2 requests
  • Ability to turn off text display and focus on listening
  • Option to review past conversation scenarios

Sentence Lab

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Superfluent

Subscriptions12
  • Monthly$10.991 Month
  • Monthly$12.991 Month
  • Monthly$14.991 Month
Show 9 more
  • Annual$74.991 Year
  • Annual7 Days trial$74.991 Year
  • Annual7 Days trial$89.991 Year
  • Annual3 Days trial$99.991 Year
  • Annual$99.991 Year
  • Annual7 Days trial$99.991 Year
  • Family Plan$109.991 Year
  • Family Plan$134.991 Year
  • Family Plan$149.991 Year
2 purchases

Sentence Lab

Subscriptions2
  • Sentence Lab Monthly Subscription$5.991 Month
  • Sentence Lab Yearly Subscription$49.991 Year

Questions

Is Superfluent free?
Superfluent is free to download, with in-app purchases available.
Is Sentence Lab free?
Sentence Lab is free to download, with in-app purchases available.
Do Superfluent or Sentence Lab have ads?
Neither Superfluent nor Sentence Lab shows ads.
Which is updated more often, Superfluent or Sentence Lab?
Superfluent ships an update every 5 days, and Sentence Lab every 6 weeks. Most recently, Superfluent was updated on September 29, 2026 and Sentence Lab on September 23, 2026.

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