MIDI Sniffer vs Tone Scope Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MIDI Sniffer
Capture and share MIDI messages from external instruments. View logs in text or hex with precise timestamps. Export as MIDI files or share via text/email. Supports Bluetooth LE connections and message filtering.
- Capture MIDI messages (text/hex)
- Microsecond precision timestamps
- Share logs via text/email
- Export logs as MIDI files
- Bluetooth LE MIDI connections
- Message filtering
- Color-coded messages
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This app allows you to capture incoming MIDI (Musical Instrument Digital Interface) messages, for example from external MIDI keyboards or accordions with a MIDI system. It is also possible to share the entire log as text or MIDI file, for example with app developers asking for a MIDI dump. Connect a MIDI interface to your Apple device, then connect your MIDI instrument to the interface. Features: - Capture MIDI messages in clear text and hexadecimal digits - Shows timestamps in microseconds precision - Share the log via text message or email - Export log as MIDI file - Establish MIDI Bluetooth LE connections - Different colors are used for better distinction - Apply filters to focus on events of interest
Tone Scope Lab
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Tone Scope Lab is a real-time tuner and spectrum analysis tool designed for musicians who want to see pitch, not just read a number. At the center of Tone Scope Lab is its infinite circular pitch ruler, which provides a continuous visual view of pitch movement while you play. Real-time spectrum visualization lets you see the frequency components of your instrument’s sound, providing another visual perspective alongside the pitch ruler. The Transpose Ruler provides a quick visual reference for transposing instruments, helping you relate written and sounding pitches at a glance. Choose from three generations of analysis and display systems: • Gen-1 — a simple and direct tuning view • Gen-2 — enhanced analysis and visualization • Gen-3 — the latest generation, combining multiple stages of analysis for more focused pitch detection Tone Scope Lab also supports instrument presets. The built-in General preset provides flexible, all-purpose tuning, while additional instrument presets can be downloaded for more focused analysis ranges. Features: • Real-time pitch detection • Infinite circular pitch ruler • Real-time spectrum visualization • Transpose Ruler for transposing instruments • Frequency display • Three generations of analysis and display • Instrument presets • Downloadable additional presets • Adjustable spectrum display modes • Designed for instrument practice, tuning, and sound observation Tone Scope Lab is designed to make pitch behavior visible — from a simple tuning reference to a deeper view of how your instrument’s sound behaves.
Screenshots
Verdict
The clearest difference is ads: MIDI Sniffer at none against Tone Scope Lab's shown. Tone Scope Lab's advantage is update cadence (every 5 days vs every 36 months). On price, in-app purchases, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MIDI Sniffer ships an update every 36 months, Tone Scope Lab every 5 days. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.
| Parameter | MIDI Sniffer | Tone Scope Lab |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 36 months | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Sven Thoennissen | Yosuke Ouchi |
In-app purchases
MIDI Sniffer
No in-app purchases
Tone Scope Lab
No in-app purchases









