KeyScroll vs Vibrato Trainer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeyScroll
This app helps musicians intuitively explore and memorize musical modes. Users can adjust notes to visualize key signatures, with clear indicators for major and minor tonics. It also displays modes and their corresponding triads.
- Visualize key signatures
- Major and minor tonic indicators
- List of modes
- Triads with tonal differences
- Intuitive note adjustment
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Master Musical Modes & Keys with Ease! Explore and memorize musical modes intuitively. Scroll up and down to adjust notes, and watch as they automatically align to form key signatures. Key Features: – Instantly visualize key signatures – Major tonic (orange) & minor tonic (blue) for quick reference – List of modes on the left & triads with tonal differences on the right Perfect for musicians, students, and anyone looking to deepen their understanding of music theory! Download now and start exploring musical modes like never before!
Vibrato Trainer
This metronome app is designed to help musicians understand and practice vibrato. It automatically maps vibrato subdivisions to musical pulses across different tempo zones, allowing users to hear and feel the correct rhythm in real time.
- Tempo-synced vibrato metronome
- Automatic vibrato subdivision mapping
- Tap tempo functionality
- Multiple time signatures
- Separate volume controls
- Piano keyboard for pitch reference
- Four waveform options
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Vibrato Trainer is the only metronome built around a new understanding of how vibrato actually works. Based on original research by Michael Van Bebber, Vibrato Trainer reveals that vibrato is not a fixed speed — it is a rhythmic subdivision of the musical pulse. As tempo changes, the correct vibrato subdivision changes predictably across six distinct tempo zones. This app maps that relationship for you automatically. Set your tempo, and Vibrato Trainer shows you exactly which subdivision your vibrato should follow — and lets you hear and feel it in real time. Features: - Tempo-synced vibrato metronome from 50–400 BPM - Automatic vibrato subdivision mapping across 6 tempo zones - Tap tempo - Time signatures: 4/4 · 12/8, 3/4 · 9/8, and 2/4 · 6/8 - Separate volume controls for beat click, vibrato click, and pitch tone - Piano keyboard for pitch reference (C3–C6) - Four waveforms: sawtooth, square, triangle, sine - Visual dot animation synced to vibrato rhythm For singers, string players, wind players, brass players, and jazz musicians.
Screenshots
Verdict
The clearest difference is device support: Vibrato Trainer at 3 against KeyScroll's 1. On price, rating, ratings volume and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for KeyScroll against 5.0 for Vibrato Trainer. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
| Parameter | KeyScroll | Vibrato Trainer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | — | Every 10 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Eldar Sadykov | Michael Van Bebber |
Customer experience
KeyScroll
Vibrato Trainer
In-app purchases
KeyScroll
No in-app purchases
Vibrato Trainer
No in-app purchases
Questions
Is KeyScroll free?
Is Vibrato Trainer free?
Which has better reviews, KeyScroll or Vibrato Trainer?
Do KeyScroll or Vibrato Trainer have ads?
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