Comparison

KANTAN Chord vs SoundNote 〜奏メモ〜

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

Head to head
About

KANTAN Chord

Features
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• Overview KANTAN Chord is a browser extension that converts various chord sites' song chords to its "degrees", also known as Nashville Numbers. (Former name: InstaChordizer) • Compatible sites - ULTIMATE GUITAR TABS(https://www.ultimate-guitar.com/) - U-フレット(https://www.ufret.jp/) - 楽器.me(https://gakufu.gakki.me/) - J-Total Music(https://music.j-total.net/) - Guitarians.com(https://guitarians.com/) - 91譜(https://www.91pu.com.tw/) • How to use Open the chord web page. From the browser extensions, choose KANTAN Chord icon and it opens a pop-up window. Choose from tabs "C,F,G" (original) , "I,IV,V" (roman numerals), or "1,4,5" (degrees). - "C,F,G" (original) Displays the chords in its original form. Select radio buttons change keys. - "I,IV,V" (roman numerals) Displays the chords' degrees, in standard roman numerals format. - "1,4,5" (degrees) Displays the chords' degrees, in numbers. Different symbols follow the "KANTAN Chord" system, based on the Nashville Number System. For more details, please visit this page: https://instachord.com/instruction/icn/ • Key analyzation KANTAN Chord automatically analyzes the song's key and displays it in red text with a yellow background banner. When the key changes during a song, it will be displayed with additional banners. E.g. "Key:E(-3)" or "Key:Ab(+1)" Numbers such as (-3) and (+1) represent half steps. If your instrument can transpose, try adjusting to these numbers. If the key analyzation is wrong or is difficult to play, try adjusting the analyzation sensitivity. - Ignore +-5 key changes When changing to a dominant (+5 half steps) or subdominant key (-5 half steps) , chords used will be very similar to its original key. When this option is turned on, KANTAN Chord will ignore +-5 key changes and stay in its original key. • Displayed keys You can choose keys outside of the auto-analyzed key. - Song's analyzed key The song's auto-analyzed most likely key is outlined in a box. - Difficulty rank The numbers in front of the key (Eg. ①, ②, ③...) are difficulty ranks when playing on the InstaChord, from easiest to most difficult. Please use as reference, when the analyzed key if wrong or when the original key is difficult to play. ① and ② are in bold, and ① is underlined. - Changing they key (in C,F,G tab) When in the C,F,G tab, you can pick different keys to transpose to. - Changing they key (in I,IV,V or 1,4,5 tab) In I,IV,V or 1,4,5 tab, you can change the base key. Apply when the analyzed key is wrong, or when the original key is difficult to play. If other keys are greyed-out, turn off analyzation sensitivity. • Options for C,F,G tab - Disable automatic loading KANTAN Chord will not take effect until the icon is pressed. Use this option if there are compatibility issues with the site's features or other extensions. This option is only effective in the C,F,G tab. - Hide key display KANTAN Chord displays the song's key and displays it in red text with a yellow background banner. Use this option to hide the key display. This option is only effective in the C,F,G tab. • Options for I,IV,V tab - b → # All half tones are represented with # - IIm, VIm → ii, vi Minor chords are represented with lower case roman numerals. • Options for 1,4,5 tab - 3b/7b → 8/9 (5b/2b → 8/9 for minor key) For the InstaChord, commonly used chords are allocated on the 8 and 9 buttons. Using this option will make use of these buttons. - Use minor key Allows the use of minor key • Beginner mode By selecting LV.0 / LV.1 / LV.2 shown on the first line, you can adjust the difficulty of the chords. In LV.0 / LV.1 mode, chords will be simplified. In LV.2 mode, all chords will be in their original form. This mode isl not available when minor key is selected.

About

SoundNote 〜奏メモ〜

Features
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大切な楽器との時間を、あなたらしく美しく残す。 「SoundNote」は、大人のための、シックで洗練された楽器練習記録アプリです。 幼すぎないモーヴピンクとボタニカルな線画をあしらった上品なデザインが、あなたの毎日のモチベーションを高めます。 趣味のサックス、ピアノ、ギター、バイオリンなど、あらゆる楽器に対応。 日々の練習をただの「データ」としてではなく、あなたの一歩一歩の成長という「ギフト」として美しく可視化します。 ◆ 心ときめく機能たち 【タップだけのスマート記録】 カレンダーの日付をタップするだけで、すぐに記録画面へ。練習時間、使用した楽器、練習内容(音出し・基礎練習・曲通しなど)を迷わずサッと入力できます。 【ひと目でわかるカレンダー】 その日にどれくらい練習したかがカレンダー上に上品に表示されます。スタンプが溜まっていくような感覚で、続けるのが楽しくなります。 【美しく情緒的な分析画面】 年・月・週ごとの総練習時間を、雑誌の1ページのような美しいタイポグラフィと滑らかなグラデーションのグラフで表示。項目ごとの内訳もひと目でわかります。 ◆ こんな方におすすめです ・毎日の練習をもっとオシャレに、モチベーション高く記録したい方 ・ごちゃごちゃしたツールではなく、シンプルで洗練されたUIが好きな方 ・複数の楽器や、基礎練習・曲練習のバランスを綺麗に管理したい方 ・大人可愛い世界観で、日記のようにつづりたい方 今日から「SoundNote」を開いて、あなたと楽器の特別な物語を記録してみましょう。

Screenshots

KANTAN Chord4 screens
SoundNote 〜奏メモ〜3 screens

Verdict

The call

The clearest difference is price: KANTAN Chord at Free against SoundNote 〜奏メモ〜's $0.49. KANTAN Chord also leads on device support (4 vs 2) and iOS requirement (15.0 vs 26.5). SoundNote 〜奏メモ〜's advantage is update cadence (every 4 days vs every 2 months). On ads and in-app purchases 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

KANTAN Chord is free to download; SoundNote 〜奏メモ〜 costs $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

KANTAN Chord ships an update every 2 months, SoundNote 〜奏メモ〜 every 4 days. The most recent releases landed on September 8, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 2 level
KANTAN Chord versus SoundNote 〜奏メモ〜: the parameters behind the verdict, then further details
ParameterKANTAN ChordSoundNote 〜奏メモ〜
PriceFree — better$0.49
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better26.5
Further details — not scored
Size1 MB3 MB
Age rating4+4+
DeveloperInstaChord Corp.Kouki Yoshimoto

In-app purchases

None

KANTAN Chord

No in-app purchases

None

SoundNote 〜奏メモ〜

No in-app purchases

Questions

Is KANTAN Chord free?
KANTAN Chord is free to download, with no in-app purchases.
Is SoundNote 〜奏メモ〜 free?
SoundNote 〜奏メモ〜 costs $0.49, with no in-app purchases.
Do KANTAN Chord or SoundNote 〜奏メモ〜 have ads?
Neither KANTAN Chord nor SoundNote 〜奏メモ〜 shows ads.
Which is updated more often, KANTAN Chord or SoundNote 〜奏メモ〜?
KANTAN Chord ships an update every 2 months, and SoundNote 〜奏メモ〜 every 4 days. Most recently, KANTAN Chord was updated on September 8, 2026 and SoundNote 〜奏メモ〜 on October 14, 2026.

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