SUS4 Tuner vs iTuner Pro
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
SUS4 Tuner
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In tune in seconds. Every instrument, every note. SUS4 Tuner is a chromatic tuner built for anyone who plays โ guitar, bass, ukulele, violin, brass, woodwind, or anything in between. Open the app, play a note, and the needle settles on pitch before your hand is off the string. The A4 reference is adjustable from 430 to 450 Hz so you can match any ensemble, pit orchestra, or recording session. Compact view keeps things simple; Stage view enlarges the display so you can read it from a music stand across the room. The Apple Watch companion means you can tune without touching your phone at all. โข Chromatic tuner โ accurate to the cent โข Instrument presets: guitar, bass, ukulele, violin, brass, and woodwind โข Adjustable A4 reference: 430 to 450 Hz โข Cents readout so you know exactly how far off you are โข Compact view for everyday use; Stage view for the music stand โข Apple Watch companion โ glance, tune, play โข Subscribe monthly, or unlock the full SUS4 suite forever: alternative tunings and brass/woodwind presets The tuner runs entirely on your device. No audio is ever sent to a server. No account needed. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
iTuner Pro
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iTuner Pro is a clean, accurate tuning toolkit for musicians who want fast feedback and a focused practice experience. Use your iPhone or Apple Watch microphone to detect pitch in real time, view the current note, frequency, and tuning deviation, and quickly bring your instrument into tune. On iPhone, use the built-in metronome to keep time and the tuning fork to play a precise reference tone. Key Features - Real-time pitch detection through the microphone - Clear note, frequency, and cents deviation display - Automatic or manual target note selection - Tuning presets for guitar, bass, ukulele, violin, viola, cello, mandolin, and banjo - Metronome with 30-250 BPM, tempo presets, multiple time signatures, sound, and haptic feedback - Tuning fork with selectable notes, adjustable A4 reference pitch, and configurable tone duration - Adjustable A4 reference pitch from 430 Hz to 450 Hz - Six appearance themes, including light and dark options - Apple Watch support for tuning right from your wrist - Simple, distraction-free interface for practice, rehearsal, and performance Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: iTuner Pro at none against SUS4 Tuner's 5. SUS4 Tuner's advantage is update cadence (every 9 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. SUS4 Tuner sells 5 in-app purchases, starting at $0.99 per month. iTuner Pro asks for nothing beyond the download.
SUS4 Tuner ships an update every 9 days, iTuner Pro monthly. The most recent releases landed on October 7, 2026 and September 30, 2026 respectively.
| Parameter | SUS4 Tuner | iTuner Pro |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 days โ better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, Mac, Apple Watch โ better | iPhone, iPod, Apple Watch |
| Requires iOS | 16.0 | 15.0 โ better |
| Further details โ not scored | ||
| Size | 20 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | ThePaulSmith | ๅนไบฎ ็ |
In-app purchases
SUS4 Tuner
- SUS4 Tuner Pro Monthly7 Days trial$0.991 Month
- SUS4 Suite (all 24 apps)7 Days trial$4.991 Month
- SUS4 All-Access7 Days trial$4.991 Month
- Lifetime Unlock (All Apps)$59.99
- SUS4 Tuner Lifetime$59.99
iTuner Pro
No in-app purchases
Questions
Is SUS4 Tuner free?
Is iTuner Pro free?
Do SUS4 Tuner or iTuner Pro have ads?
Which is updated more often, SUS4 Tuner or iTuner Pro?
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