Chord Transpose vs Keep Black
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chord Transpose
Easily transpose songs to a more comfortable key, displaying both scale and numeric values. Features capo placement suggestions to simplify playing difficult chords. Optimized for iPhone 6 and higher.
- Transpose songs to different keys
- Display scale and numeric values
- Capo placement suggestions
- Simplify difficult chords
- Optimized for newer iPhones
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Ever been on stage or in your room writing songs or just to play the best hit. You find yourself singing along but the key does not fit your vocal ? You don't know how to play these tedious chords that does not even sound great. Transposer strive to make it as easy as possible to transpose from one key to another displaying both keys scale and their numeric value. With Capo On you can choose the hardest key ever and the key you are most comfortable with and Transposer will display the fret number on which your capo should be. Happy Music! *Please note that this app is optimised for iPhone 6 and higher.
Keep Black
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Turns your TV display output to complete black so you can keep playing music or podcasts while your display shows nothing. FEATURES - Black screen to save your eyes and the environment from unnecessary visual clutter when you are listening to music or podcasts. - Prevents the screen saver from kicking in while the screen is turned to black. This is similar to a screen saver, but also prevents the default screen savers from kicking in. - Continue to listen to audio in the background with Apple Music, Spotify or Tidal. Works with any other that supports music or audio playback. - A blinking visual indicator that can be turned on as needed with a timer feature. - Move the application to the top shelf for an elegant black background for your Apple TV home screen. - Minimalistic user interface and settings HOW TO - You can also show a green blinking indication to identify that the application is still active. It can set to a time duration as well. Settings related to this feature can be changed by changing the settings at Settings > Apps > Keep Black. - To exit the app, simply press the menu or the home button on your Siri remote. - This app also prevents the Apple TV from sleeping while active, so please make sure you are turning it off when you are done watching. - Notification overlays will continue to show while in the application. To disable them, please goto Settings > Apps > TV, find the notifications section and disable notifications. WORKS GREAT - On OLED, LCD and QLED displays made by Samsung, LG, Sony, Philips, Vizio, Panasonic and also displays that support true blacks with HDR. - On Projectors made by Xiaomi, Epson and BenQ and others. - Other displays such as external monitors being used as the output device on Apple TV with HDMI.
Screenshots
Verdict
The clearest difference is price: Chord Transpose at Free against Keep Black's $1.99. Chord Transpose also leads on iOS requirement (12.1 vs 14.0). Keep Black's advantage is in-app purchases (none vs 1). On ads and device support 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
Chord Transpose is free to download; Keep Black costs $1.99 up front. Chord Transpose sells 1 one-off in-app purchase. Keep Black asks for nothing beyond the download.
| Parameter | Chord Transpose | Keep Black |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 3.2 (5 ratings) — better | — |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 6 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod — better | Apple TV |
| Requires iOS | 12.1 — better | 14.0 |
| Further details — not scored | ||
| Size | 20 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | SMICO Consulting (Pty) Ltd. | Bhagya Silva |
In-app purchases
Chord Transpose
- Remove all Ads$2.99
Keep Black
No in-app purchases






