Comparison

Tuner+ vs CarlTune

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

Head to head
About

Tuner+

This app provides perfectly tuned reference notes for various musical instruments, allowing users to tune by ear. It offers both real audio and sine wave sounds and supports VoiceOver accessibility. It does not analyze instrument notes but serves as a quick reference for tuning in any key.

Highlights
  • Plays reference notes for tuning
  • Supports guitar, bass, piano, and more
  • Real audio and sine wave sounds
  • VoiceOver accessibility
  • Tune in any key
Features
Read full description

Tuner+ Tune your Guitar, Bass, Banjo, Mandolin, Cello, Violin, Piano, Viola, or Ukulele in seconds. This app plays perfectly tuned notes for you to match your pitch to. The sounds are both real audio and sine wave form. We're also proud to announce that Tuner+ is now supports full VoiceOver Accessibility. This app does NOT analyze the notes of your instrument to tell you if you are sharp or flat. It is just a quick way to get reference notes for ear tuning in any key. Enjoy! Nick Moby Pixel

About

CarlTune

This app analyzes sounds from your microphone to display pitch, frequency, and octave. It offers intuitive graphical interfaces and supports a wide range of instruments and custom tunings for precise tuning.

Highlights
  • Chromatic tuning
  • Pitch and frequency display
  • Cent value adjustment
  • Multiple instrument tunings
  • Custom tuning options
  • Pitch pipe with keyboard interface
Features
Read full description

This is a chromatic tuner that captures the sound coming into the microphone, analyzes it, and displays the pitch. It shows the frequency and octave of the analyzed pitch, and the difference (cent value) from the standard pitch at the same time, allowing you to know the current pitch more specifically and quickly. In addition, graphical interfaces such as analog clocks provide more intuitive and multi-dimensional information. ▶Main features: ● Colors : You can select almost any color. ● Notation : Supports US, Europe, Korea, Thailand, Japan, and India. ● Rotation : Supports landscape mode and portrait mode screen. ● Hit range : You can fine-tune by adjusting ±Cent value from the standard pitch. ● Tunings: Provides various instruments and custom tuning interfaces. 6 String Guitar (Standard, Standard D, Drop D, Double Drop D, EAEGBE, Open D, Open E, Open Dmaj7, Open Emaj7, Open D7, Open E7, Open D6, Open E6, Open D minor, Open E minor, Open G, Open A, Open Gmaj7, Open C, Open A minor, Dad Gad, Papa Papa), 4-string bass guitar, 6-string bass guitar, ukulele, violin, viola, cello, double bass, mandolin, mandola, Guitarelle In addition, the default chromatic interface can be used for almost all instruments such as flute, kalimba, daegeum, gayageum, and vocal practice. ● Pitch pipe : Produces a mathematically accurately calculated frequency tone. Also, the piano keyboard interface and standard frequency values ​​can help you understand sounds and music. ● Visibility : You can adjust the graphic interface aspect ratio to fit the aspect ratio of the device screen. ● Transposition, concert pitch : You can change the most well-known tuning standard A4=440Hz. It also provides a transposition function for transposing instruments such as the clarinet, trumpet and saxophone. ● All features are free, including ads. ● You can remove ads by making in-app payment (paid purchase).

Screenshots

Tuner+4 screens
CarlTune4 screens

Verdict

The call

The clearest difference is update cadence: CarlTune at every 8 days against Tuner+'s every 6 months. Tuner+'s advantage is rating (4.7 vs 4.3) and ratings volume (1.1K vs 62). On price, ads, in-app purchases and monetization model 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

Both are free to download. Tuner+ sells 1 one-off in-app purchase and CarlTune sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Tuner+ holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Tuner+ has 1.1K ratings behind it against 62, so its average is the more settled of the two. Written reviews point the same way: 82% of Tuner+'s written reviews are positive against 68% of CarlTune's.

UpkeepUpdate frequency

Tuner+ ships an update every 6 months, CarlTune every 8 days. Both last shipped on November 1, 2026.

Scorecard4 real differences · 6 level
Tuner+ versus CarlTune: the parameters behind the verdict, then further details
ParameterTuner+CarlTune
PriceFreeFree
Rating4.7 (1.1K ratings) — better4.3 (62 ratings)
Positive reviews82.2% of reviews — better67.6% of reviews
Number of ratings1.1K — better62
Update frequencyEvery 6 monthsEvery 8 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size9 MB8 MB
Age rating4+4+
DeveloperNick CulbertsonJUNG IL PARK

Customer experience

Tuner+

All ratings1,084 ratings
Positive92.5%
Neutral3.5%
Negative4.0%
Written reviews152 reviews
Positive82.2%
Neutral6.6%
Negative11.2%

CarlTune

All ratings62 ratings
Positive82.3%
Neutral6.5%
Negative11.3%
Written reviews37 reviews
Positive67.6%
Neutral8.1%
Negative24.3%

Bugs and requests

Tuner+

Reported bugs

2 issues
  • App crashes on certain devices
  • Distortion on some string notes

Requested features

4 requests
  • Add support for alternate tunings
  • Provide visual tuning indicators
  • Include a metronome feature
  • Expand instrument selection

CarlTune

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Tuner+

One-time1
  • Remove Ads - Tuner+$0.99
1 purchases

CarlTune

One-time1
  • Remove ads$3.99

Questions

Is Tuner+ free?
Tuner+ is free to download, with in-app purchases available.
Is CarlTune free?
CarlTune is free to download, with in-app purchases available.
Which has better reviews, Tuner+ or CarlTune?
Tuner+ is rated higher. Tuner+ averages 4.7 out of 5 from 1.1K ratings, while CarlTune averages 4.3 from 62 ratings.
Do Tuner+ or CarlTune have ads?
Both Tuner+ and CarlTune show ads.
Which is updated more often, Tuner+ or CarlTune?
Tuner+ ships an update every 6 months, and CarlTune every 8 days. Most recently, Tuner+ was updated on November 1, 2026 and CarlTune on November 1, 2026.

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