Comparison

SUS4 Tuner vs iTuner Pro

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

Head to head
About

SUS4 Tuner

Features
Read full description

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. โ€ข Chromatic tuner โ€” accurate to the cent โ€ข Instrument presets: guitar, bass, ukulele, violin, brass, and woodwind โ€ข Adjustable A4 reference: 430 to 450 Hz โ€ข Cents readout so you know exactly how far off you are โ€ข Compact view for everyday use; Stage view for the music stand โ€ข Apple Watch companion โ€” glance, tune, play โ€ข 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/

About

iTuner Pro

Features
Read full description

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

SUS4 Tuner4 screens
iTuner Pro4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences ยท 4 level
SUS4 Tuner versus iTuner Pro: the parameters behind the verdict, then further details
ParameterSUS4 TuneriTuner Pro
PriceFreeFree
Update frequencyEvery 9 days โ€” betterMonthly
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, Mac, Apple Watch โ€” betteriPhone, iPod, Apple Watch
Requires iOS16.015.0 โ€” better
Further details โ€” not scored
Size20 MB8 MB
Age rating4+4+
DeveloperThePaulSmithๅŸนไบฎ ็Ž‹

In-app purchases

5 purchases

SUS4 Tuner

Subscriptions3
  • 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
One-time2
  • Lifetime Unlock (All Apps)$59.99
  • SUS4 Tuner Lifetime$59.99
None

iTuner Pro

No in-app purchases

Questions

Is SUS4 Tuner free?
SUS4 Tuner is free to download, with in-app purchases available.
Is iTuner Pro free?
iTuner Pro is free to download, with no in-app purchases.
Do SUS4 Tuner or iTuner Pro have ads?
Neither SUS4 Tuner nor iTuner Pro shows ads.
Which is updated more often, SUS4 Tuner or iTuner Pro?
SUS4 Tuner ships an update every 9 days, and iTuner Pro monthly. Most recently, SUS4 Tuner was updated on October 7, 2026 and iTuner Pro on September 30, 2026.

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