Comparison

Complete Vocal Technique vs Understood In Spanish

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

Head to head
About

Complete Vocal Technique

Unlock your vocal potential with a comprehensive singing technique guide. Learn to reach higher, lower, longer, and faster notes healthily with practical tools, visuals, and sound examples. This app offers in-depth explanations of vocal anatomy and science for singers of all levels.

Highlights
  • Vocal technique explanations
  • Pedagogical illustrations and graphs
  • Extensive sound examples
  • Singing exercises
  • In-depth anatomy and physiology
  • Vocal mode control
  • Vocal effect training
Features
Currently charting
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The app contains the book in the following languages: English, Italian, and Chinese. Singing is not difficult - Everybody can learn how to sing! Unlock the sounds you want in your own voice with simple tools, visuals, sound examples and training tips. The Complete Vocal Technique app helps you reach higher, lower, longer, and faster notes in all volumes, pitches, and sound colours, with any vocal effect in a healthy manner. Complete Vocal Technique (CVT) is the world’s biggest singing technique and it has helped professional singers from all over the world for more than 25 years. CVT covers the latest and most innovative research in anatomy, physiology and voice science to secure that any singer can perform any desired sound in a healthy manner. With the Complete Vocal Technique app you get your own personal copy of the entire CVT system available at your fingertips. The app combines easily understandable explanations of vocal technique with pedagogical illustrations, graphs, and research to give quick, practical, and applicable solutions to any issue of the voice. All technical, theoretical and pedagogical explanations are supported by an extensive library of sound examples and singing exercises consisting of real life audio examples sung by professional singers. With the Complete Vocal Technique app you have access to all of this in the palm of your hand - in one app - that you can use wherever and whenever you need it.  The CVT app represents ground breaking approaches within vocal pedagogy, and helps professional as well as amateur singers reach new potential and solve problems in their voices. The app covers techniques for all styles of music, how to control the four vocal modes, speech techniques, mastering the various vocal effects - training all sounds in a healthy way. The app lets you unlock the sounds YOU want in your own voice with simple tools, visuals, and training tips, as well as offering in-depth descriptions of anatomy, physiology, and science. Complete Vocal Technique has been used in recording studios, on tours, and in concerts all over the world, and has quickly become an invaluable resource for countless of singers in their work with their voices. Complete Vocal Technique is developed by Cathrine Sadolin and she is continuously researching with ENT doctors, acoustical engineers, and other voice professionals from all over the world.

About

Understood In Spanish

Master Spanish grammar and vocabulary with comprehensive lessons from beginner to advanced levels. Practice speaking, typing, and listening with interactive exercises and receive explanations in your native language. The entire course is free, with optional ads and in-app purchases for an enhanced experience.

Highlights
  • A1-C2 Spanish course
  • Grammar explanations in 33 languages
  • Speaking and typing practice
  • Spaced repetition review
  • Offline course access
  • Progress tracking on device
Features
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Understood In Spanish is a complete Spanish course, A1 to C2, with real grammar explanations, speaking practice and typed answers. Every lesson is free, and every explanation is in your own language. EVERY LESSON IS FREE • 280 lessons across 70 units, from complete beginner (A1) to C2 • No hearts, no energy bars, no lessons locked behind a payment • The free version shows ads: a banner on the Learn and Review screens, and now and then a full-screen ad after you finish a lesson, review, quiz, drill, story, conversation, dialogue or game. Never during one. LEARN THROUGH YOUR OWN LANGUAGE Explanations, hints and translations are in the language you choose: 33 languages, including English, Chinese, Hindi, Arabic, Portuguese, Russian, Japanese, Korean, French and German. The Spanish you learn is the same in every language. REAL GRAMMAR, EXPLAINED • A plain-language explanation opens every lesson: why the words behave that way, not just what to tap • Ser vs estar, the subjunctive, por vs para: the hard things get the space they need • A searchable grammar library you can come back to any time • Read aloud: hear an explanation in your language, on phones that have a voice for it SPEAK IT, TYPE IT, HEAR IT • Speaking exercises use your phone's speech recognition and show you what they heard. They are always optional. • Typed answers, not only multiple choice, with a keyboard bar for accents • Every Spanish word and sentence is spoken by your phone's built-in voice PRACTICE THAT STICKS • Smart Review brings each word back just before you would forget it (spaced repetition based on SM-2) • Fix Your Misses turns the exercises you got wrong into a short session • Daily Workout: up to twelve items, once a day, from your due words and recent mistakes • 12 dialogues: two people talk, each in their own voice; tap any word for its meaning, then answer questions • Three games: Pares, Palabras and A Day in Mexico City, a 3D story where you reply in Spanish • 24 graded stories: tap any word for its meaning and audio • 18 conversations that correct you and explain why • Conjugation Gym: 64 verbs, seven tenses, drills and Fill the chart • Over 1,200 words and phrases • Flashcards for every unit, plus cards and quizzes you build yourself • A 164-phrase phrasebook for travel, food, work and small talk WORKS OFFLINE The whole course ships inside the app. No account, no sign-up. Lessons, stories and review work without a connection. Audio needs a Spanish voice on your phone, and speaking practice works offline only where your phone can recognize Spanish on the device. YOUR PROGRESS STAYS ON YOUR PHONE Streaks, XP, a 14-day chart and an achievement wall. There is no account and no server of ours: your progress is stored on your phone, and we never receive it. Export a backup file and import it on another phone or tablet; importing merges and never deletes. PRIVACY The app goes online only for ads in the free version (Google AdMob), for purchases through Apple and, on some phones, for speech recognition. The app never records or keeps your voice; depending on your phone, Apple may process the audio to recognize it. HOW THE COURSE IS MADE The course was written by AI and checked with automated tests and AI review, not by a human linguist. Translations other than English are machine-generated. PRO (OPTIONAL SUBSCRIPTION) Pro removes the ads. Nothing else is locked behind it: every lesson is free for everyone. • Pro Monthly: $0.99 a month • Pro Yearly: $5.99 a year Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically at the same price unless you cancel at least 24 hours before the end of the current period. Manage or cancel anytime in Settings › your name › Subscriptions. Prices shown are US pricing; your local price appears in the app. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Complete Vocal Technique4 screens
Understood In Spanish4 screens

Verdict

The call

The clearest difference is price: Understood In Spanish at Free against Complete Vocal Technique's $64.99. Understood In Spanish also leads on update cadence (weekly vs every 5 months) and rating (5.0 vs 4.8). Complete Vocal Technique's advantage is in-app purchases (none vs 2) and ads (none vs shown). On 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

Understood In Spanish is free to download; Complete Vocal Technique costs $64.99 up front. Understood In Spanish sells 2 in-app purchases, starting at $0.99 per month. Complete Vocal Technique asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Understood In Spanish holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Complete Vocal Technique has 8 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Complete Vocal Technique ships an update every 5 months, Understood In Spanish weekly. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

Scorecard9 real differences · 2 level
Complete Vocal Technique versus Understood In Spanish: the parameters behind the verdict, then further details
ParameterComplete Vocal TechniqueUnderstood In Spanish
Price$64.99Free — better
Rating4.8 (8 ratings)5.0 (1 ratings) — better
Positive reviews83.3% of reviews—
Number of ratings8 — better1
Update frequencyEvery 5 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#198 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size514 MB125 MB
Age rating12+4+
DeveloperComplete Vocal InstituteOlivia Renee Studio, LLC

Customer experience

Complete Vocal Technique

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews18 reviews
Positive83.3%
Neutral16.7%
Negative0.0%

Understood In Spanish

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Complete Vocal Technique

No in-app purchases

2 purchases

Understood In Spanish

Subscriptions2
  • Pro Monthly$0.991 Month
  • Pro Yearly$5.991 Year

Questions

Is Complete Vocal Technique free?
Complete Vocal Technique costs $64.99, with no in-app purchases.
Is Understood In Spanish free?
Understood In Spanish is free to download, with in-app purchases available.
Which has better reviews, Complete Vocal Technique or Understood In Spanish?
Understood In Spanish is rated higher. Complete Vocal Technique averages 4.8 out of 5 from 8 ratings, while Understood In Spanish averages 5.0 from 1 ratings.
Do Complete Vocal Technique or Understood In Spanish have ads?
Understood In Spanish shows ads; Complete Vocal Technique does not.
Which is updated more often, Complete Vocal Technique or Understood In Spanish?
Complete Vocal Technique ships an update every 5 months, and Understood In Spanish weekly. Most recently, Complete Vocal Technique was updated on November 2, 2026 and Understood In Spanish on November 8, 2026.

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