Skip to content

Black Keys

by LE SANG

  • Utilities
  • Paid
  • Zombie
View on the App Store
Rating
0.0
0 ratings · Afghanistan storefront
Last update
Apr 21, 2020
Version 3.4
Size
37 MB
Category
Utilities
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.

Black Keys, multilingual keyboards, for unsupported languages and typing IPA (International Phonetic Alphabet).
Black mode is simple but awesome and good for your eyes.

Check your language in this list and download:
*IPA: IPA full and English IPA (new design and full of letters)
*Arabic group: Dari, Pashto,Sorani Kurdish, Uyghur
*Need to install font group: Amharic, Burmese, Coptic,N'ko,Tifinagh
*Others: Khmer, Inuktitut, Georgian, Armenian, Sinhala, Lao, Kazakh, Nepali, Bangla, Gurmukhi, Malayalam, Gujarati, Kannada, Oriya, Telugu.

*NOTE:
-Some keyboard have longPress to popup some hidden letters: Amharic, Dari, Pashto, Sorani Kurdish. Please take your time to practice much from beginning to understand how to use or check our video tutorials from app
-Burmese and Sinhala use smart combination to help you type faster, please check tutorial video from app.
-Deprecated languages: Persian, Syriac (move to swipekeys app)
If your keyboard miss some letters, or need to improve or you need to add your languages,please contact us on Facebook:
https://www.facebook.com/BlackKeyboards

What’s new

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

v3.4
Original · root

-Added Sinhala missing font
*Please choose install missing font then choose "Sinhala missing font" at the end of list
-Added Sinhala missing letters in Alt mode.

Rank history

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

Best rank
#4
Current rank
#7
Days charting
7 of 7

On the charts today

Small & simple score

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

65/100

Not flagged as small & simple

  • Developer size0% · 25

    Developer: 10 apps on the charts

  • Audience size– · 20

    No data, weight redistributed

  • App size100% · 10

    Size: 37 MB

  • Price model100% · 15

    Price model: paid

  • Demand proof90% · 30

    Best rank #4, 6 countries

An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2

How the score works

Version history

  • 3.4LatestReleased Apr 21, 2020