Comparison

Interval Training vs solfa

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

Head to head
About

Interval Training

Features
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Interval Training is an ear-training app for everyone learning music. [Main features] - Quiz format: compare two tones and name the interval - Wide range of intervals, from perfect unison to perfect octave - Visualize your skill through accuracy and answer speed - Steady ear improvement with daily training Perfect for instrumentalists, singers, music students, DTM creators, and everyone involved in music. Sharpen your ear like a game during spare moments on your commute.

About

solfa

Features
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絶対音感があっても、相対音感は鍛えられます。 作曲、耳コピ、アドリブ、音楽理論の理解に本当に役立つのは、絶対音感ではなく相対音感です。 Solfaは、初心者から絶対音感を持つ人まで、それぞれのレベルに合わせて相対音感を効率よく鍛えられるトレーニングアプリです。 ■ 絶対音感の人でも鍛えられる 多くの相対音感トレーニングアプリは、ルートがC固定で出題されます。そのため、絶対音感を持つ人は音名だけで答えられ、相対音感の練習にならないことがあります。 Solfaは出題ごとにルートをランダムに変更できるため、音の「名前」ではなく「音と音の関係」を聴き取る力を鍛えられます。 ■ 自分に合った練習ができる 伴奏は、コード進行・トニックコード・ルート単音から選択可能。 回答方法も、移動ド・度数など複数の表記に対応しています。 目的やレベルに合わせて、自分に最適なトレーニング環境を作れます。 ■ 9段階で無理なくレベルアップ 完全5度(ド・ソ)から始め、トライアド、7thコード、ダイアトニック7音へ。 慣れてきたら短7度や増4度を追加し、最後は12音すべてを使った実践的なトレーニングへ進みます。 段階的に学べるので、無理なく着実に相対音感を身につけられます。

Screenshots

Interval Training4 screens
solfa4 screens

Verdict

The call

The clearest difference is ads: solfa at none against Interval Training's shown. Interval Training's advantage is update cadence (every 11 days vs every 2 months). On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Interval Training ships an update every 11 days, solfa every 2 months. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 4 level
Interval Training versus solfa: the parameters behind the verdict, then further details
ParameterInterval Trainingsolfa
PriceFreeFree
Update frequencyEvery 11 days — betterEvery 2 months
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.4 — better
Further details — not scored
Size5 MB40 MB
Age rating4+4+
DeveloperMIZOU, CO., LTD.B8T LABS

In-app purchases

None

Interval Training

No in-app purchases

None

solfa

No in-app purchases

Questions

Is Interval Training free?
Interval Training is free to download, with no in-app purchases.
Is solfa free?
solfa is free to download, with no in-app purchases.
Do Interval Training or solfa have ads?
Interval Training shows ads; solfa does not.
Which is updated more often, Interval Training or solfa?
Interval Training ships an update every 11 days, and solfa every 2 months. Most recently, Interval Training was updated on October 25, 2026 and solfa on October 6, 2026.

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