Comparison

12 vs Pro Guitar Tuner

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

Head to head
About

12

This application provides a straightforward tool for tuning 12-string guitars to the standard eEaAdDgGBBEE tuning. It guides users by playing the correct notes for each string, allowing them to adjust their tuning pegs accordingly. The app also offers functionality for tuning standard 6-string guitars.

Highlights
  • 12-string guitar tuning
  • Standard eEaAdDgGBBEE tuning
  • Plays reference notes for each string
  • Supports 6-string guitar tuning
  • Easy-to-use interface
Features
Read full description

Simple 12-string guitar tuner to tune up your 12-string guitar. This is for the standard eEaAdDgGBBEE 12 String Guitar tuning. Tuning your guitar can be a difficult task for you if you are just beginning guitar. The good news is, the more you do it, the easier it becomes. A nicely tuned guitar can make your music sound a lot better and help you greatly while you're are just getting the hang of finger placement for notes. A 12 string guitar is split up into 6 pairs of 2 strings. The thicker string of the pair is tuned to the same note and octave as a regular 6 string guitar. The thinner string, on the pair of strings 3-6, is tuned one octave higher than it's pair. On the first and second pairs, the notes are the same octave and each string in the pair should sound exactly the same to it's other string in the pair. This is eEaAdDgGBBEE tuning. The lowercase letters means that it is one octave higher then it's counterpart. Touch the note for the string you want to tune and then turn the tuning pegs on your guitar and match it up with the note that is being played. Tip: Make several passes tuning each of the strings. For example you might have noticed that if you have tuned all the strings once, and then back to the first one you tuned, it might be off a little bit. This is because you are increasing or decreasing the tension on each of the strings as you tune it and the instrument's body might bend ever so slightly due to this difference in tension. This causes the other strings to slightly change in pitch. So make sure you keep on checking and tuning the strings until all are in tune, so make several passes. Also you can use this simple tuner for your standard 6-String Guitar, it is the same tuning, only the strings on the 6-String Guitar are EADGBBEE, which is right part of this 12-String Guitar Tuner. So use just right part of this tuner to tune up your 6-String Guitar. Any questions using the App? Write support@tuneinstrument.com and we we'll get back to you promptly. If you need to tune other music instruments simply have a look into our other applications: Violin Tuner Simple, Cello Tuner Simple, Banjo Tuner Simple, Mandolin Tuner Simple, Double Bass Tuner Simple, Viola Tuner Simple, Guitar Tuner Simple, Ukulele Tuner Simple, Bass Tuner Simple. Follow us on Twitter: @TuneInstrument Like us on Facebook: facebook.com/Tuneinstrument Follow us on Google+: Tuneinstrument Subscribe to YouTube channel: www.youtube.com/TuneInstrument Sign up for newsletter and or visit us: www.tuneinstrument.com

About

Pro Guitar Tuner

This app provides precise, real-time tuning for a wide variety of stringed instruments. It offers numerous custom tunings, an intuitive interface with visual feedback, and high-quality audio samples for ear training. Users can save favorite tunings for quick access.

Highlights
  • Real-time chromatic tuning
  • Supports over 200 custom tunings
  • Vast library of stringed instruments
  • Intuitive interface with visual feedback
  • High-quality instrument samples
  • Save favorite tunings
Features
Read full description

The guitar tuner app used by professional guitar makers, guitar repair shops and musicians around the world. The app listen and analyze the sound in real time from the built-in mic, headset, guitar clip on or from any other external microphone. It is so accurate that it will be your best friend for guitar intonation! Because Pro Guitar Tuner is chromatic you can tune most types of stringed instruments. High-quality samples of real instruments are also accessible (i.e. tune by ear if preferred!). A massive library of different tunings for guitar, bass, balalaika, violin, ukulele and more makes it easy to find more qualities and characteristics from your instrument. The interface: To make it more intuitive, we give you information about the current pitch in many different ways: *Cents for the current pitch *A red/green light indicating the closest pitch *A note wheel corresponding to the chromatic scale *A fretboard with the current tuning setting displayed Standard guitar is set as default but the guitar tuner can be used to tune many different instruments, such as: *Guitars - Standard, 4-string, 5-string, 7-string, 8-string , 9-string, 10-string, 11-string, 12-string, and 13-string guitar *Bass guitars - Standard, 5-string bass and 6-string bass *Ukuleles - std (Soprano), Pocket, Concert, Tenor, Baritone, Bass, and Contrabass *Banjo - 4-string, 5-string, 6-string *Mandolin family - Mandolin (Soprano), Piccolo, Mandola (alto), Octave Mandolin (tenor), Mandocello (Baritone), Mandobass, Irish Bouzouki, Cittern, and Greek Bouzouki *Violin family - Violin, Viola, Cello (violoncello), Double bass and 5-string Double bass *Balalaika family - Prima, Piccolo, Secunda, Alto, Tenor, Bass and Contrabass After you have selected an instrument you choose a specific tuning. The app provides you with over 200 custom tunings. The tuning options are divided into groups to make them easier to find. For guitar, the categories are: *General tunings *Raised tunings *Lowered tunings *Dropped tunings *Double dropped tunings *Major open tunings *Minor open tunings (cross-note) *Modal tunings *Miscellaneous tunings If you have certain tunings that you often use, you can save them as favorites. This gives you easy access to them under favorite tunings. In the app, you can choose to subscribe to Pro Guitar Tuner Premium. It´s a monthly subscription that gives you the following features: *No Ads *All Tunings *All Instruments *Extra Settings Privacy Policy: https://www.proguitar.com/about/policies/privacy Terms of Service: https://www.proguitar.com/about/policies/terms

Screenshots

124 screens
Pro Guitar Tuner4 screens

Verdict

The call

The clearest difference is price: Pro Guitar Tuner at Free against 12's $0.99. Pro Guitar Tuner also leads on rating (4.7 vs 3.5) and review sentiment (65% vs 27%). 12's advantage is in-app purchases (none vs 5) and ads (none vs shown). On device support 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

Pro Guitar Tuner is free to download; 12 costs $0.99 up front. Pro Guitar Tuner sells 5 in-app purchases, starting at $2.99 per month. 12 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Pro Guitar Tuner holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: Pro Guitar Tuner has 10K ratings behind it against 44, so its average is the more settled of the two. Written reviews point the same way: 27% of 12's written reviews are positive against 65% of Pro Guitar Tuner's.

UpkeepUpdate frequency

12 ships an update every 3 months, Pro Guitar Tuner monthly. The most recent releases landed on November 6, 2026 and November 10, 2026 respectively.

Scorecard9 real differences · 1 level
12 versus Pro Guitar Tuner: the parameters behind the verdict, then further details
Parameter12Pro Guitar Tuner
Price$0.99Free — better
Rating3.5 (44 ratings)4.7 (10K ratings) — better
Positive reviews27.1% of reviews64.9% of reviews — better
Number of ratings4410K — better
Update frequencyEvery 3 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS5.1.1 — better15.0
Further details — not scored
Size27 MB47 MB
Age rating4+4+
DeveloperPavel NikitenkoPro Guitar Sweden AB

Customer experience

12

All ratings44 ratings
Positive59.1%
Neutral4.5%
Negative36.4%
Written reviews70 reviews
Positive27.1%
Neutral1.4%
Negative71.4%

Pro Guitar Tuner

All ratings10,321 ratings
Positive92.0%
Neutral3.0%
Negative5.1%
Written reviews481 reviews
Positive64.9%
Neutral2.7%
Negative32.4%

User reviews

12

From 44 App Store ratings

What we love

  • 👍 Simple and easy to follow
  • 👍 Quick and easy tuning
  • 👍 User-friendly mode
  • 👍 On target with tuning
  • 👍 Great for 12-string guitars

Room to improve

  • 🐛 Crushing constantly
  • 🐛 Does not work on iPad Pro
  • 🐛 Useless product
  • 🐛 No microphone
  • 🐛 Not a tuner, just plays tone

Pro Guitar Tuner

From 10K App Store ratings

What we love

  • 🌟 Excellent tuning accuracy
  • 👍 Easy to use and intuitive
  • 🎨 Beautiful and clean design
  • 🔍 Versatile with many tuning options

Room to improve

  • 💰 Paid features behind paywall
  • 🙄 Excessive ads in free version
  • 🐛 Occasional bugs and glitches
  • 🔇 Microphone issues on some devices

Bugs and requests

12

Reported bugs

10 issues
  • Crushing constantly
  • Does not work on iPad Pro
  • No microphone functionality
  • App crashes on opening
  • App quits when opened
Show 5 more
  • Note getting stuck
  • Update broke the app
  • Loads picture then crashes
  • No sound
  • Top E string octave lower than it should be

Requested features

4 requests
  • Use the microphone for tuning
  • Add visual confirmation (e.g., green indicator)
  • Allow tuning down strings
  • Change MHz up and down

Pro Guitar Tuner

Reported bugs

3 issues
  • App crashes when changing tuning modes
  • Tuner not responding to some strings
  • Microphone not working on certain devices

Requested features

4 requests
  • Custom tuning options
  • Support for more instrument types
  • Landscape mode support
  • Ability to save tuning profiles

In-app purchases

None

12

No in-app purchases

5 purchases

Pro Guitar Tuner

Subscriptions4
  • Pro Guitar Tuner Premium$2.991 Month
  • Premium Membership$24.991 Month
  • Pro Guitar Tuner Premium3 Days trial$24.991 Year
Show 1 more
  • ProGuitar Academy7 Days trial$79.991 Year
One-time1
  • Premium Tuner$59.99

Questions

Is 12 free?
12 costs $0.99, with no in-app purchases.
Is Pro Guitar Tuner free?
Pro Guitar Tuner is free to download, with in-app purchases available.
Which has better reviews, 12 or Pro Guitar Tuner?
Pro Guitar Tuner is rated higher. 12 averages 3.5 out of 5 from 44 ratings, while Pro Guitar Tuner averages 4.7 from 10K ratings.
Do 12 or Pro Guitar Tuner have ads?
Pro Guitar Tuner shows ads; 12 does not.
Which is updated more often, 12 or Pro Guitar Tuner?
12 ships an update every 3 months, and Pro Guitar Tuner monthly. Most recently, 12 was updated on November 6, 2026 and Pro Guitar Tuner on November 10, 2026.

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