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Solfa - learn read music tutor

by Alain Kong

  • Education
  • Paid
  • Zombie
  • Small & simple · 100
View on the App Store
Rating
4.5
177 ratings · Russia storefront
Last update
Apr 8, 2021
Version 3.6
Size
9 MB
Category
Education
Tracked since
Oct 10, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

Original · Russian

сольфеджио. Научитесь взгляд читать музыку в Скрипичный ключ и басовый ключ. Примечания выше и ниже Нотный стан. Пролет 6 октав. Применимо к любому инструменту. Примечания генерируются случайным образом, а не ограничиваться повторением набора. Переключение между ключами для еще более увлекательным. Ответ ключевым для начинающих. Обучение легче, ограничивая октавы раздел, чтобы узнать. Мажорные и минорные гаммы (диез и бемоль). Русские музыкальные ноты До Ре Ми Фа Соль Ля Си. Оценка испытаний и статистика работы. Фортепианный звук может быть отключен. Отлично подходит для телефонов. Идеально подходит для таблеток.

Альтернативные обозначения:
C D E F G A B
C D E F G A H
Do Ré Mi Fa Sol La Si
Do Re Mi Fa Sol La Si
ハ ニ ホ ヘ ト イ ロ
Ni Pa Vu Ga Di Ke Zo
Sa Re Ga Ma Pa Dha Ni

Альтернативный звук:
гитара
органной
труба
виброфон
скрипка
гобой
кларнет
Литавры
флейта
птица
телефон

What’s new

Release notes for the latest version, as written by the developer.

v3.6
Original · Russian

незначительное улучшение

Rank history

Daily position in the Norway charts. #1 is at the top.

Best rank
#9
Current rank
#23
Days charting
2 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

100/100

Small & simple

  • Developer size100% · 25

    Developer: 1 app on the charts

  • Audience size100% · 20

    Ratings: 177

  • App size100% · 10

    Size: 9 MB

  • Price model100% · 15

    Price model: paid

  • Demand proof100% · 30

    Best rank #4, 20 countries

An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2

How the score works

Version history

  • 3.6LatestReleased Apr 8, 2021