Comparison

Keys Trainer vs Audiquo Tuning Fork

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

Head to head
About

Keys Trainer

Master key signatures and scales with this music learning app. Practice identifying keys, understanding note sharps/flats, and instantly recognizing scale layouts on a keyboard. Features include customizable practice, passive viewing, and a challenging game mode.

Highlights
  • Key signature recognition
  • Scale layout identification
  • Customizable learning range
  • Intelligent training based on performance
  • Practice, View, Game, and Search modes
  • Earn coins, medals, and trophies
Features
Read full description

Do you want to be capable of recognizing the key signatures at first sight? That is, when you see a key signature, you know what key it is and what notes should be sharp or flat immediately. Do you want to have the ability of instantly identifying the scale layout on a piano/keyboard for a given key? If your answer is yes, check out this app. It can help you acquire these skills which can definitely benefit your music learning and piano playing. Main Features: • Practice Mode You learn at your own pace simply by answering the question, and if you are wrong, the correct answer will be shown for the duration of your choice. • View Mode You don’t need to do anything but watching, the questions and answers will be shown automatically after the delay of your choice. Good for lazy people like me. • Game Mode In this exciting countdown mode, you can challenge yourself and earn as many coins, medals, and trophies as you can. • Search Mode This mode allows you to look up the keys by name, key signature or keyboard. • Learning Range Customization You can customize your learning range sot that you can focus on improving your weaknesses. • Intelligent Training Each question is generated intelligently based on the statistical information of your performance so that it can turn your weaknesses into strengths.

About

Audiquo Tuning Fork

Features
Read full description

Audiquo Tuning Fork, for iPhone and Apple Watch, plays the 24 musical pitches in Octaves 4 and 5. The pitches are from C4 to B4 in Octave 4 and from C5 to B5 in Octave 5. Pitches play and slowly fade away, just like a tuning fork. Pitches are arranged on the familiar and intuitive Equal-Tempered Chromatic Circle and are based on A4 at 440 Hz -- "Concert Pitch". To play a pitch in Octave 4, tap it on the Chromatic Circle. To play a pitch in Octave 5, long-press it on the Chromatic Circle. When a pitch is played, it moves to the center of the display and becomes the currently-selected pitch. Once selected, you can use the Play button to replay it. To stop playing, tap where the note came from on the Chromatic Circle. Tap there again to deselect the pitch and return it to its position on the Chromatic Circle. On iPhone, when a pitch is played, it is added to the Recent Pitches panel for quick replay. All current Apple Watch models – along with Apple Watch Ultra 2 and Apple Watch Series 10 – can play pitches on their built-in speakers. Older models must be connected to an external (e.g. Bluetooth) audio device. On Apple Watch, tap the center of the display (avoiding the play button, if present) to switch quickly between sharp and flat accidentals. On supported Apple Watches, the Double Tap gesture replays the currently-selected pitch. Also on Apple Watch, you can add complications to your watch face for quick access, and you can add a Smart Stack widget to replay the currently-selected pitch or to open the app. Audiquo Tuning Fork offers four attractive color themes and four music notations: Scientific, Fixed-Do, German and Helmholtz. On iPhone, theme and notation settings are accessible directly from the app screen. Other settings are accessible via the Settings app. On Apple Watch, long-press the center of the display to access the settings. Whether you're performing, practicing, rehearsing or listening to music, Audiquo Tuning Fork can provide just the pitch you need, right there on your iPhone and Apple Watch, one tap away, instantly ready.

Screenshots

Keys Trainer4 screens
Audiquo Tuning Fork4 screens

Verdict

The call

The clearest difference is update cadence: Audiquo Tuning Fork at every 2 months against Keys Trainer's every 9 months. Audiquo Tuning Fork also leads on price ($1.99 vs $2.99). Keys Trainer's advantage is iOS requirement (12.0 vs 18.0). On 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

Keys Trainer costs $2.99 and Audiquo Tuning Fork $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Keys Trainer ships an update every 9 months, Audiquo Tuning Fork every 2 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Keys Trainer versus Audiquo Tuning Fork: the parameters behind the verdict, then further details
ParameterKeys TrainerAudiquo Tuning Fork
Price$2.99$1.99 — better
Rating5.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 9 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS12.0 — better18.0
Further details — not scored
Size30 MB3 MB
Age rating4+4+
DeveloperPlearn LLCMichael Brady

In-app purchases

None

Keys Trainer

No in-app purchases

None

Audiquo Tuning Fork

No in-app purchases

Questions

Is Keys Trainer free?
Keys Trainer costs $2.99, with no in-app purchases.
Is Audiquo Tuning Fork free?
Audiquo Tuning Fork costs $1.99, with no in-app purchases.
Do Keys Trainer or Audiquo Tuning Fork have ads?
Neither Keys Trainer nor Audiquo Tuning Fork shows ads.
Which is updated more often, Keys Trainer or Audiquo Tuning Fork?
Keys Trainer ships an update every 9 months, and Audiquo Tuning Fork every 2 months. Most recently, Keys Trainer was updated on November 3, 2026 and Audiquo Tuning Fork on October 30, 2026.

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