Comparison

Optimum Singing vs Sight Singing Pro

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

Head to head
About

Optimum Singing

Enhance your singing with daily vocal workouts designed to improve range, breathing, and vocal quality. Choose from various music styles for personalized lessons. Suitable for all ages, it offers a structured approach to vocal mastery.

Highlights
  • Vocal workout exercises
  • Breathing and diaphragm strengthening
  • Vocal range expansion
  • Personalized music style lessons
  • Daily practice routines
  • Articulation and warm-up exercises
Features
Read full description

• It’s a vocal workout to advance the quality of your singing, to increase your vocal range and to improve your vocal breathing. • This app allows you to choose the style of music that you prefer. Be it Pop, Modern, or just Piano accompaniment. This will provide you with a happy spirit and individually tailored lesson. • Created by a "University of Northwestern" Saint Paul, Minnesota graduate. • It’s a variety of exercises for you and your children to improve your vocal abilities. A daily workout for an awesome singing voice. Just 20 minutes a day and you will be surprised by the results. • OSinging includes: - breathing exercises - vocal warm up exercises - exercises for stronger diaphragm - lip trill - vocal range exercises - articulation exercises - arpeggios - intervals • Total 15 exercises and 45 videos. Last two might be a challenge even for expert vocalists. An array of intervals and arpeggios will help polish your vocal mastership, for the way to perfection consist of many fine elements. • First two exercises are always free!!! • OSinging is an app that will exhilarate your emotions and will be a beneficial way to spend your time. • It is an educational tool that you can use whenever you like. • Monthly Subscription: Unlimited access to all vocal exercises. Billed at $5.99 (USD) per month. • Annual Subscription: Unlimited access to all vocal exercises. Billed $34.99 (USD) per year. • Prices displayed are USD$. Actual charge may be converted to your local currency depending on your country of residence. • Use subscription on any device registered with your Apple ID. • Your Apple account will be charged when you choose a plan and pass a parental control. • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Manage Subscription: Auto-renewal may be turned off by going to your account settings after purchase. With OSinging, you will find new boundaries for your voice. Made by teachers, singers and musicians for you with love!!! Terms of use can be found here https://optimumapps.net/singing/terms-of-service.html

About

Sight Singing Pro

This app acts as a personal vocal coach to help you master reading music and singing on pitch. It provides real-time feedback on your singing accuracy and offers various training modes for ear training and sight singing.

Highlights
  • Real-time pitch analysis and feedback
  • Record and playback for comparison
  • Multiple training modes (Sight Singing, Ear Training)
  • Customizable drills with note and key selection
  • Support for various clefs and score difficulties
  • Detailed performance reports and achievement tests
Features
Read full description

Master sight singing with your personal vocal coach. Sight Singing Pro is designed to help you master the art of reading music and singing on pitch. Whether you are a music student preparing for your ABRSM graded exams, a choir member, or a passionate hobbyist, our app acts as a real-time tutor, listening to you sing and showing you exactly where you hit the right notes—and where you missed. "Revolutionary app to fully utilize iPhone's recording/playing functionality to enable solfege training. With the function to visually show how much my own singing is off, I can practice while adjusting subtle sound differences by myself." -- a 5-star review at App Store The app includes three dedicated training modes: • Sight Singing • Ear Training - Dictation • Ear Training - Singing 【 Key Features 】 • Analyze the pitch you sing for each note and receive instant feedback on its accuracy. • Record your song and play it back with the correct melody for comparison. • View detailed performance reports in the Report section. • Customize your training with the 'Drill' mode, where you can configure what kinds of notes will appear and transpose. • Choose from a variety of clefs, including treble, bass, alto, and tenor. • Select your preferred level of score difficulty, from Intro I, Intro II, Easy, Moderate, and Difficult. • Choose the type of notes, rests, time signatures, the number of bars, and the tempo. • Explore advanced musical elements like ties, dotted notes, triplets, and leaps. • Select a key from twelve major and twelve minor keys. • Display syllables in fixed-do, moveable-do, or letter name. • Practice scales. • Store and review music sheets you've tried for future reference. • Challenge yourself with Achievement Tests featuring over 2000+ highly selected musical sheets. • Master your grade's sight-singing tests with our new ABRSM courses. 【 How to Use 】 1. Press 'Tonic' to check the tonic of the music score. 2. Scroll through the score to get an overview of the entire song. 3. Press 'Start' and sing along with the score. 4. A green bar will appear when your pitch is correct and a red one when it's off. 5. Use the 'Play' button to listen to the song in the correct pitch. 【 Subscriptions 】 • Payment will be charged to your Apple ID account at the confirmation of purchase. • The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. • Your account will be charged for renewal within 24 hours prior to the end of the current period. • You can manage and cancel your subscriptions by going to your App Store account settings after purchase. • You will not be able to cancel the subscription once activated. 【 FAQ 】 Do you have any questions? Visit our FAQ page at https://sightsinging.app/faq for detailed instructions and troubleshooting tips. You also can reach us by email at support@sightsinging.app. • Terms & Conditions https://sightsinging.app/terms-and-conditions • Privacy Policy https://sightsinging.app/privacy-policy Start your sight singing journey today and unlock your musical potential with our app!

Screenshots

Optimum Singing4 screens
Sight Singing Pro4 screens

Verdict

The call

The clearest difference is monetization model: Optimum Singing at freemium against Sight Singing Pro's subscription. Optimum Singing also leads on rating (5.0 vs 4.8) and review sentiment (100% vs 88%). Sight Singing Pro's advantage is ratings volume (189 vs 6). On price, update cadence, ads and in-app purchases 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. Optimum Singing sells 2 in-app purchases, starting at $5.99 per month and Sight Singing Pro sells 3 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Optimum Singing holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Sight Singing Pro has 189 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 100% of Optimum Singing's written reviews are positive against 88% of Sight Singing Pro's.

UpkeepUpdate frequency

Optimum Singing ships an update every 4 days, Sight Singing Pro every 5 days. The most recent releases landed on October 1, 2026 and October 27, 2026 respectively.

Scorecard5 real differences · 5 level
Optimum Singing versus Sight Singing Pro: the parameters behind the verdict, then further details
ParameterOptimum SingingSight Singing Pro
PriceFreeFree
Rating5.0 (6 ratings) — better4.8 (189 ratings)
Positive reviews100.0% of reviews — better87.5% of reviews
Number of ratings6189 — better
Update frequencyEvery 4 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better17.6
Further details — not scored
Size89 MB139 MB
Age rating4+4+
DeveloperIgor BerezovschiDeeryard LLC

Customer experience

Optimum Singing

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Sight Singing Pro

All ratings188 ratings
Positive95.7%
Neutral1.1%
Negative3.2%
Written reviews32 reviews
Positive87.5%
Neutral3.1%
Negative9.4%

Bugs and requests

Optimum Singing

Not enough reviews yet to summarise bugs or requests.

Sight Singing Pro

Reported bugs

5 issues
  • Microphone doesn't always hear correctly
  • Pitch analysis broken, reports wrong octave
  • Inconsistent note accuracy on specific notes
  • App forcing repurchase after updates
  • App unavailable in certain countries

Requested features

3 requests
  • On-screen piano keyboard for practice
  • Easier octave adjustment or auto-detection
  • More complex scores in free version

In-app purchases

2 purchases

Optimum Singing

Subscriptions2
  • Monthly paid subscription$5.991 Month
  • Annual paid subscription$34.991 Year
3 purchases

Sight Singing Pro

Subscriptions2
  • Premium Access - Monthly$8.991 Month
  • Premium Access - Yearly$89.991 Year
One-time1
  • One-time Payment$259.99

Questions

Is Optimum Singing free?
Optimum Singing is free to download, with in-app purchases available.
Is Sight Singing Pro free?
Sight Singing Pro is free to download, with in-app purchases available.
Which has better reviews, Optimum Singing or Sight Singing Pro?
Optimum Singing is rated higher. Optimum Singing averages 5.0 out of 5 from 6 ratings, while Sight Singing Pro averages 4.8 from 189 ratings.
Do Optimum Singing or Sight Singing Pro have ads?
Neither Optimum Singing nor Sight Singing Pro shows ads.
Which is updated more often, Optimum Singing or Sight Singing Pro?
Optimum Singing ships an update every 4 days, and Sight Singing Pro every 5 days. Most recently, Optimum Singing was updated on October 1, 2026 and Sight Singing Pro on October 27, 2026.

Other comparisons