Comparison

Rosetta Stone Sapphire vs JustinGuitar Note Trainer

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

Head to head
About

Rosetta Stone Sapphire

Learn a new language through bite-sized, immersive lessons and real-world practice scenarios. Perfect your pronunciation with advanced speech recognition technology and explore over 25 languages. Customize your learning with flashcards and games.

Highlights
  • Bite-sized immersive lessons
  • Advanced speech recognition
  • Real-world practice scenarios
  • Access to 25+ languages
  • Customizable flashcards and games
  • Cross-platform access (mobile & web)
Read full description

With a large collection of cutting-edge language learning tools all in one place, you can discover endless ways to learn and practice! IMMERSIVE LESSONS Our bite-sized lessons (as short as 5 minutes!) build essential skills through our research-proven Dynamic Immersion method. Learn to read, write, listen, and speak in your new language with the fastest, most effective technique! PERFECT YOUR PRONUNCIATION TruAccent, our top-rated speech recognition technology, compares your voice to data from millions of native speakers and gives you immediate feedback on your pronunciation. You’ll feel confident knowing you’re mastering pronunciation from day one! BUILD SKILLS FOR REAL LIFE Rosetta Stone’s lessons prepare you to navigate the authentic interactions you care about: meeting someone new, asking for help, dining out, and more. Activities featuring audio from native speakers help you get comfortable speaking your language! EXPLORE 25 DIFFERENT LANGUAGES Your subscription includes access to every lesson and activity in all 25 of our languages! Spanish (Spain) • German • French • Italian • Dutch • Arabic • Korean • Swedish • Spanish (Latin America) • Japanese • Hebrew • Chinese • Greek • Farsi • Turkish • Russian • Vietnamese • Hindi • Portuguese (Brazil) • Tagalog (Filipino) • Irish • Latin • English (American) • English (British) • Polish Learn Spanish for work, tackle Japanese before your big trip next summer, or take on Turkish as a new hobby. You have the freedom to explore without limits! ⏺ Continue your journey on Rosetta Stone for web! ⏺ Your subscription gets you access to the Rosetta Stone mobile app PLUS our web platform, where there’s even more to explore on your desktop or mobile browser! REAL-WORLD PRACTICE SCENARIOS Rosetta Stone’s Chat Missions immerse you in free-flowing conversations covering dozens of real-life scenarios, like ordering at a restaurant or choosing what to read at the bookstore. Chat Missions give you a safe environment to build your confidence. Plus, get language tips and encouraging reminders as you practice! PERSONALIZE YOUR LEARNING Explore flashcard sets on 500+ unique topics like coffee shop essentials, must-know makeup terms, or vocab starter kits customized for gamers! Or, use Sapphire Studio to create your own custom matching games, transform tricky-to-read text to your learning level, and more! Rosetta Stone has been the language experts for 30+ years. We’ve helped more than 50 million people learn new languages! Our method is powered by research into the most effective strategies for language learning, and it works! Just 13 hours of study with Rosetta Stone is equivalent to a full semester of college Spanish. Download Rosetta Stone today and try 7 days of expert-powered language learning for free. You’ll start speaking from your very first lesson! SUBSCRIPTION DETAILS Rosetta Stone offers a 1 month and annual membership. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Payment will be charged to your Apple account. Auto-renewal may be turned off at any time by going to your settings in the App Store after purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

JustinGuitar Note Trainer

Master the guitar fretboard quickly with daily exercises designed to build a deep understanding of note locations. This app helps you stop guessing and start knowing every note on your guitar, improving your playing.

Highlights
  • Learn fretboard notes fast
  • Daily 5-minute exercises
  • Build mental map of guitar neck
  • Stop guessing, start knowing notes
  • Smart repetition for weak spots
  • Practice anywhere on your phone
Features
Currently charting
Read full description

Most guitar players never properly learn the notes on the fretboard. We memorize shapes and guess—and it works for a while. But when we try to improve, we hit a wall. JustinGuitar Note Trainer helps us learn the fretboard fast, in just 5 minutes a day. No diagrams. No memorizing charts. Just simple exercises that build a real understanding of the guitar neck. We learn to find any note on the guitar fretboard, build a clear mental map across all strings, and stop guessing and actually know the notes. Short daily exercises perfect for busy schedules, smart repetition to reinforce weak spots, and practice anywhere with your phone. If we want to learn guitar notes properly, this is one of the most valuable skills we can build. Built by JustinGuitar.

Screenshots

Rosetta Stone Sapphire4 screens
JustinGuitar Note Trainer4 screens

Verdict

The call

The clearest difference is review sentiment: JustinGuitar Note Trainer at 80% against Rosetta Stone Sapphire's 28%. JustinGuitar Note Trainer also leads on in-app purchases (none vs 1) and chart position (#52 vs unranked). Rosetta Stone Sapphire's advantage is price (Free vs $4.99) and ratings volume (2.1K vs 5). On update cadence, ads, device support and iOS requirement 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

Rosetta Stone Sapphire is free to download; JustinGuitar Note Trainer costs $4.99 up front. Rosetta Stone Sapphire sells 1 in-app purchase, starting at $19.99 per month. JustinGuitar Note Trainer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Rosetta Stone Sapphire holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Rosetta Stone Sapphire has 2.1K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 28% of Rosetta Stone Sapphire's written reviews are positive against 80% of JustinGuitar Note Trainer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Rosetta Stone Sapphire ships an update every 2 weeks, JustinGuitar Note Trainer fortnightly. Both last shipped on October 25, 2026.

Scorecard7 real differences · 4 level
Rosetta Stone Sapphire versus JustinGuitar Note Trainer: the parameters behind the verdict, then further details
ParameterRosetta Stone SapphireJustinGuitar Note Trainer
PriceFree — better$4.99
Rating4.6 (2.1K ratings) — better4.4 (5 ratings)
Positive reviews28.3% of reviews80.0% of reviews — better
Number of ratings2.1K — better5
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank—#52 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size196 MB40 MB
Age rating4+4+
DeveloperRosetta Stone, Ltd.Justin Guitar

Customer experience

Rosetta Stone Sapphire

All ratings1,925 ratings
Positive91.0%
Neutral2.6%
Negative6.4%
Written reviews152 reviews
Positive28.3%
Neutral11.2%
Negative60.5%

JustinGuitar Note Trainer

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

In-app purchases

1 purchases

Rosetta Stone Sapphire

Subscriptions1
  • Rosetta Stone Sapphire7 Days trial$19.991 Month
None

JustinGuitar Note Trainer

No in-app purchases

Questions

Is Rosetta Stone Sapphire free?
Rosetta Stone Sapphire is free to download, with in-app purchases available.
Is JustinGuitar Note Trainer free?
JustinGuitar Note Trainer costs $4.99, with no in-app purchases.
Which has better reviews, Rosetta Stone Sapphire or JustinGuitar Note Trainer?
Rosetta Stone Sapphire is rated higher. Rosetta Stone Sapphire averages 4.6 out of 5 from 2.1K ratings, while JustinGuitar Note Trainer averages 4.4 from 5 ratings.
Do Rosetta Stone Sapphire or JustinGuitar Note Trainer have ads?
Neither Rosetta Stone Sapphire nor JustinGuitar Note Trainer shows ads.
Which is updated more often, Rosetta Stone Sapphire or JustinGuitar Note Trainer?
Rosetta Stone Sapphire ships an update every 2 weeks, and JustinGuitar Note Trainer fortnightly. Most recently, Rosetta Stone Sapphire was updated on October 25, 2026 and JustinGuitar Note Trainer on October 25, 2026.

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