Comparison

AltoClef vs Viola Tuner

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

Head to head
About

AltoClef

A game designed to help viola players improve their sight-reading speed. It offers a focused learning experience for musicians looking to master alto clef notation.

Highlights
  • Sight-reading practice
  • Alto clef focus
  • Viola player learning
  • Basic gameplay
  • Future updates planned
Features
Read full description

AltoClef is a game for viola players who are learning to sightread AltoClef faster! The game is basic for now, but it will get better in the future releases.

About

Viola Tuner

This application offers a precise and user-friendly way to tune your viola. It features professional sound recordings and advanced algorithms for accurate pitch recognition, with multiple tuning modes available. The app works offline and provides advanced settings for musicians.

Highlights
  • Professional viola sound recordings
  • Offline tuning capabilities
  • Auto tune, manual, and chromatic modes
  • Adjustable concert pitch (Hz)
  • Deviation display in cents
  • Custom tuning and presets
Features
Read full description

Viola Tuner – XTuner PRO is an easy-to-use free mobile application with which you will be able to tune your viola quickly. The sounds for our application were recorded by professional musicians. Sounds that cannot be generated by a musician have been created synthetically. App works offline. What is the most important: it is a free tuner. The algorithm in the viola tuner offline app has been prepared for the most effective recognition of instrument sounds. To get the auto tune result, play the sound several times. Viola Tuner – XTuner PRO app for instruments has three modes: auto tune, manual and pro - chromatic tuner mode. App works offline. - Auto Tune – automatic tuning – examined the frequency of the signal is interpreted to the next clear sound of the specific frequencies of pure sound. - Manual – sound tuning - select a specific sound that will be tuned. Features in the tuning app: - recordings of real sounds of viola - the ability to set the frequency of sound "a" (concert pitch) in Hz (herz), - the ability to determine the deviation from the base frequency in cents, - instrument head view, - ability to set frequency filter - custom tuning - presets for your music instrument - chromatic tuner mode – you can practise diapason using it - auto tune and manual mode - professional frequency settings – choose the concert pitch in Hz and transposition - viola tuner offline - it is a free pro tuner; you don’t have to pay. If you would like to have version of the free tuner with no ads, you can buy premium forever or subscription. If you will have any problems with Viola Tuner – XTuner PRO app, please feel free to contact us: mobile@netigen.eu. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://netigen.eu/privacy/ More information: https://xtunerpro.com/viola

Screenshots

AltoClef3 screens
Viola Tuner4 screens

Verdict

The call

The clearest difference is review sentiment: AltoClef at 100% against Viola Tuner's 25%. AltoClef also leads on rating (5.0 vs 2.7) and in-app purchases (none vs 2). On price, ratings volume, 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

Both are free to download. Viola Tuner sells 2 in-app purchases, starting at $2.99 per 7 days. AltoClef asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

AltoClef holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 5 and 11 respectively. Written reviews point the same way: 100% of AltoClef's written reviews are positive against 25% of Viola Tuner's.

UpkeepUpdate frequency

AltoClef ships an update daily, Viola Tuner every 3 weeks. The most recent releases landed on September 24, 2026 and October 21, 2026 respectively.

Scorecard6 real differences · 4 level
AltoClef versus Viola Tuner: the parameters behind the verdict, then further details
ParameterAltoClefViola Tuner
PriceFreeFree
Rating5.0 (5 ratings) — better2.7 (11 ratings)
Positive reviews100.0% of reviews — better25.0% of reviews
Number of ratings511 — better
Update frequencyDaily — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.012.0 — better
Further details — not scored
Size1 MB54 MB
Age rating4+4+
DeveloperKhaleel Jamal AnnajjarNETIGEN Kluzowicz sp. j.

Customer experience

AltoClef

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Viola Tuner

All ratings9 ratings
Positive44.4%
Neutral11.1%
Negative44.4%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

In-app purchases

None

AltoClef

No in-app purchases

2 purchases

Viola Tuner

Subscriptions1
  • 1 week subscription + trial3 Days trial$2.997 Days
One-time1
  • Forever one-time payment$19.99

Questions

Is AltoClef free?
AltoClef is free to download, with no in-app purchases.
Is Viola Tuner free?
Viola Tuner is free to download, with in-app purchases available.
Which has better reviews, AltoClef or Viola Tuner?
AltoClef is rated higher. AltoClef averages 5.0 out of 5 from 5 ratings, while Viola Tuner averages 2.7 from 11 ratings.
Do AltoClef or Viola Tuner have ads?
Viola Tuner shows ads; AltoClef does not.
Which is updated more often, AltoClef or Viola Tuner?
AltoClef ships an update daily, and Viola Tuner every 3 weeks. Most recently, AltoClef was updated on September 24, 2026 and Viola Tuner on October 21, 2026.

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