10 Best Free Ukulele Tuner Apps for iPhone
Updated October 2, 2026 · written by AppHunt
A ukulele has only four strings, but they slip out of tune often — new nylon strings keep stretching for days — so a tuner on the phone gets a lot of use. The differences are in the details: whether the app spots the string by itself, whether it covers low G or baritone, and how many ads come with it. Here are ten, in our own words.
Acord
AppHunt partner · promo codeAcord tunes a ukulele in standard G-C-E-A for free, with no ads and no account: pluck a string and Acord points out the note and the direction to turn the peg, turning each string green once it's in tune. Premium adds low G and guitalele, a strobe display and any reference pitch, plus the metronome's extra tools — free for a year with our promo code.
Good for: Standard ukulele tuning for free, with no ads
Glory Mae Dagapioso$19.99→Free/ 1 YearNew subscribers. Renews at the standard price unless canceled. Offer terms
••••••••1500 codes left
Kala Ukulele
Built by Musopia for the Kala brand, this app pairs a free tuner with lessons and a big songbook. Choose soprano, concert, tenor or baritone, switch between high-G and low-G, then follow the meter or match a reference tone. Starter lessons and the chord library cost nothing.
Good for: Beginners who want a tuner plus guided lessons
Keep in mind: The complete songbook and full lesson path are subscription-only; US plans range from $4.99 a month to $79.99 a year.
View in the App Store
LikeTones Ukulele Tuner
Completely free with no ads or in-app purchases, which is rare in this category. Auto mode figures out which string you plucked and shows a needle and frequency readout; tap a note button to hear the target pitch instead. Baritone and many alternate tunings are included, plus a basic metronome.
Good for: Anyone who wants a tuner with zero ads or upsells
View in the App Store
Daikyouju Ukulele Tuner
A long-running tuner that reads your string's exact frequency and lights green once it lands on pitch. Five presets cover soprano, concert, tenor and baritone sizes. The tuner itself is free with ads; the chord library, metronome, tuning fork and settings are $1.99 add-ons.
Good for: Quick standard tuning with a precise Hz readout
Keep in mind: Ad-supported. Ad removal, chords, metronome, tuning fork and settings (A4 calibration) cost $1.99 each; a $9.99 Pro edition is sold as a separate app.
View in the App Store
Tunio Ukulele Tuner
Tunio's ukulele-only tuner offers an auto mode that spots the string you pluck and a manual mode for strings that are far off. Presets run from soprano to baritone, plus slack key and open tunings. Free use is ad-supported and limited: extra tunings and most chords require Premium.
Good for: Players who want many tunings and a chord trainer
Keep in mind: Ads in the free tier; Premium is a $4.99 weekly plan (per US reviews) or a $24.99 one-time unlock. Some 2025–2026 US reviews say they could not tune without subscribing.
View in the App Store
TrueStudio Ukulele Tuner
A tidy free tuner with an auto switch, three meter styles, and a needle view that names whatever note it hears. You can save custom tunings and even switch to guitar presets. A metronome with tap tempo and subdivisions, plus chord charts for common keys, rounds it out.
Good for: A free all-rounder: tuner, metronome and chord charts
Keep in mind: No in-app purchases; the developer's privacy policy says ads are served through Google AdMob.
View in the App Store
Simple Tuner for Ukulele
A one-screen tuner that needs no setup: pluck a string and it picks out which one, then shows hertz, cents and a needle. Each string button turns green, yellow or red depending on how close you are. It's free, and the listing shows no purchases or ad tracking.
Good for: Beginners who want one screen and no menus
View in the App Store
Ukulele String Tuner
A free indie tuner styled like a ukulele sound hole. With Auto on, it listens and says whether a string is in tune, flat or sharp; switch it off and tap the strings to hear reference notes. Low G, baritone, Canadian and open G tunings are in the list.
Good for: Alternate tunings without paying for an upgrade
Keep in mind: No in-app purchases, but its privacy label lists a device ID collected for third-party advertising.
View in the App Store
EM-1 Ukulele Tuner
A compact tuner from the makers of MyEarTraining. Pluck any string and it identifies it automatically, displaying cents and hertz, or tap a note to hear its pitch. Standard, low G, D, Canadian and baritone tunings come free, each with chord diagrams you can play back.
Good for: Players who switch between low G, D and baritone
Keep in mind: Ad-supported, with a $3.99 Premium Upgrade on offer; last updated in January 2025.
View in the App Store
Ukulele All
A free, ad-supported bundle of tuner, chord book and metronome. The tuner finds the string on its own or lets you pick it, and a noise gauge shows how loud the room is. D tuning is among the presets, and the chord charts show which finger goes where.
Good for: Practicing chords and rhythm without switching apps
Keep in mind: Free with ads (the listing is marked as containing advertising); no in-app purchases are listed.
View in the App Store
Questions and answers
Is there a free ukulele tuner app?
Yes. All ten apps here are free to download. LikeTones and Simple Tuner have nothing to buy, Kala's tuner is free inside an app that sells lessons, and several others are free with ads. Acord tunes standard G-C-E-A for free with no ads, and its Premium is free for a year with the AppHunt promo code.
What are the ukulele tuning notes?
Standard tuning is G-C-E-A, from the string nearest your chin to the one nearest the floor: G4, C4, E4 and A4, with the A at 440 Hz. The G is a high, re-entrant G tuned above the C, which gives the ukulele its bright sound.
What is low G tuning?
Low G drops the G string an octave, to G3 at 196 Hz, for a deeper, more guitar-like range; it usually takes a thicker string. Kala, EM-1 and Ukulele String Tuner offer a low-G option, and in Acord it comes with Premium.
How do I tune a baritone ukulele?
A baritone uses D-G-B-E (D3, G3, B3, E4), the same notes as the four thinnest strings of a guitar. Kala, LikeTones, Daikyouju, Tunio, EM-1 and Ukulele String Tuner include baritone presets.
How do I tune a ukulele with my iPhone?
Open a tuner app, allow microphone access and pluck one string at a time in a quiet room. The app shows the note and whether it is flat or sharp; turn the peg until the indicator settles in the middle, then check all four strings once more. Expect to retune often while the strings are new.
How do I tune a ukulele without a tuner?
Get one string right against a piano, a pitch pipe or an online reference — usually the A. Then press the E string at the 5th fret and match it to the open A, the C string at the 4th fret to match the open E, and the G string at the 2nd fret to match the open A (an octave lower on a low-G ukulele).
Is the Kala ukulele app free?
The tuner is: it handles soprano, concert, tenor and baritone ukuleles, low G included, without paying, and the first lessons and the chord library are free as well. The full songbook and lesson path need a subscription, and reviewers say the app asks you to create an account.
Which ukulele tuner has no ads?
Acord, LikeTones, Simple Tuner and Kala show no ads. Daikyouju, Tunio, TrueStudio, EM-1 and Ukulele All carry ads; Ukulele String Tuner sells nothing, but its privacy label declares data used for advertising.
Can I use a guitar tuner app for a ukulele?
Yes. Big general tuners such as Fender Tune, GuitarTuna and Simply Tune have a ukulele mode, and any chromatic tuner works once you know the four target notes. We compared those apps in a separate list. 10 best free guitar tuner apps
How do I use the Acord promo code?
Tap Get on the Acord card. If you are not signed in to AppHunt you will be asked to log in, and the code appears right after. Redeem opens the App Store's own redemption screen with the code filled in.
How is the list ordered?
First place is Acord, an app made by the AppHunt team, with a promo code. Places 2–10 are ukulele-first apps ordered by the number of ratings in the US App Store, one app per developer; general tuners with a ukulele mode are in our guitar tuner list instead.