Mr. Chord Doodle vs K
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Mr. Chord Doodle
Create, save, and display custom guitar chord diagrams with an intuitive drawing interface. Includes a high-precision tuner and a versatile metronome for all your practice needs.
- Chord and scale diagram drawing
- Custom chord saving
- Automatic chord detection
- High-performance guitar tuner
- Versatile metronome with sound sets
- Left-handed mode support
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"Mr. Chord Doodle" is an all-in-one app designed for guitarists, allowing you to freely draw, display, and save chord diagrams with an intuitive "doodling" feel. In addition to creating chord diagrams, the app features a high-precision tuner and a versatile metronome. It solves common problems for guitarists, whether you want to check fingerings, log original chord progressions, or practice with a tuner and metronome without switching apps. [Main Features] β Chord & Scale Drawing (Diagram Creation) Freely place positions on the guitar fretboard. Supports standard view, 180-degree reversed view, and a left-handed mode. Created chords and scales can be saved with custom names. Includes an automatic chord detection feature that identifies chord names based on your finger positions. β High-Performance Guitar Tuner Supports Standard tuning, Half-Step Down tuning (with note detection), and Chromatic tuning. Easily tune your guitar before or during practice without leaving the app. β Simple Metronome Features tempo-keeping with a choice of 6 sound sets. Save your favorite tempos and settings with custom names for easy recall during song practice. Whether you are a beginner learning chords, or an advanced player taking notes on chord progressions and scales, this app supports all levels of guitar practice. Perfect for your daily guitar session!
K
This application provides hands-free audio feedback for tuning musical instruments. It audibly announces the string and its tuning status, making it accessible for visually impaired users and convenient for all. Advanced features and additional tunings are available through a one-time purchase.
- Hands-free audio tuning
- Spoken results for string and pitch
- VoiceOver integration
- Automatic string detection
- Capo support
- Visual meter for sighted users
- Multiple alternative tunings (Pro)
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K-Tuner is a guitar tuner that lets you tune with your capo on. Choose the capo fret on the tuner screen, and each stringβs target pitch moves up to match. Pluck a string, and the meter shows whether it is in tune, too low, or too high. No need to remove the capo between songs. Capo support and standard tuning are free. It also works without looking at the screen. Pluck a string, and K-Tuner automatically detects which string you played. Turn on "Speak aloud" in Settings to hear the result, or use VoiceOver. K-Tuner was designed from the ground up to support VoiceOver. HOW IT WORKS β’ Open the app and it starts listening right away. β’ Pluck one string. K-Tuner picks the string automatically. You can also tap a string button to lock it. β’ When the note settles, it speaks the result. It stays quiet while you are turning the peg, so it never talks over you. β’ If the note fades too soon, it gives you a rough reading such as "probably too high" instead of staying silent. β’ If another string is ringing and hiding the one you plucked, it tells you which string to mute. β’ Tap "Speak current reading" at any time to hear the string and how many cents it is off. MADE FOR VOICEOVER β’ Every control has a clear label and hint. β’ Start or stop with a two-finger double-tap (magic tap), so you never have to find a button while holding your guitar. β’ The meter and the constantly changing numbers are hidden from VoiceOver so the focus never jumps around. β’ Results are announced in the language of the app, and the announcements do not interrupt each other in the wrong order. NOT USING VOICEOVER? Turn on "Speak aloud" in Settings and K-Tuner speaks the results itself, at the rate you choose. Sighted players get a large circular meter with a needle that turns green when the string is in tune. FREE VERSION β’ Standard tuning (E A D G B E) β’ Capo β’ Automatic string picking β’ Spoken results and VoiceOver support β’ The visual meter K-TUNER PRO (one-time purchase) β’ 18 more tunings: half step down, whole step down, Drop D, Drop C, Drop B, Open D, Open E, Open G, Open A, Open C, DADGAD, Nashville, all fourths, all fifths, major thirds, guitalele, and ukulele (high G and low G) β’ Reference pitch from 430 to 445 Hz Pro is a single purchase, not a subscription. Buy it once and use it on all your iPhones and iPads with the same Apple ID. PRIVACY K-Tuner uses the microphone only to measure pitch. Nothing is recorded or saved, and no audio ever leaves your device. There are no accounts and no ads. If something goes wrong, you can choose to email the developer an activity log; it contains no audio. TIPS β’ Place your iPhone near the body of the guitar with the microphone facing it. Your lap or a music stand works fine. β’ Pluck with normal strength. A very hard pluck takes longer to settle. β’ Keep the microphone out of air-conditioner drafts. Questions or feedback? Use "Send Bug Report" or "Support" in Settings, or visit the support page.
Screenshots
Verdict
The clearest difference is in-app purchases: Mr. Chord Doodle at none against K's 4. K's advantage is ads (none vs shown). On price, review sentiment, update cadence and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. K sells 4 one-off in-app purchases. Mr. Chord Doodle asks for nothing beyond the download.
Mr. Chord Doodle ships an update every 3 days, K every 5 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.
| Parameter | Mr. Chord Doodle | K |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Update frequency | Every 3 days β better | Every 5 days |
| Ads | Yes | No β better |
| In-app purchases | No β better | Yes |
| Monetization | Ad-supported β better | Free with in-app purchases |
| Devices | iPhone, iPad, Mac β better | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 β better |
| Further details β not scored | ||
| Size | 47 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | KAZUAKI NATSUBAYASHI | Asoft.iOS |
Customer experience
Mr. Chord Doodle
K
In-app purchases
Mr. Chord Doodle
No in-app purchases
K
- A coffee$1.99
- A set of strings$5.99
- KTuner Pro$6.99
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- A big thank-you$19.99









