1.5

• Problems in orange: under Lock now, Pause playback first and a failed lock's line, such as Last lock failed 22:23 · …, show in orange, as the app's other problems do; a lock that worked stays grey.
• Battery in view: the headphones' battery, when they report it, next to their kind, such as Headset · 80%, in orange from 15% down. The Bluetooth address, which told nobody anything, is gone from that line.
• What RedMagic resamples: under the format, a line tells what its mixer, fixed at 48 kHz, resamples: music at 44.1 kHz once, and LDAC at another rate than the mixer's adds a resample, in orange, as Sample rate avoids it. Shown only where the mixer was measured at 48 kHz.
• Version in App settings: the version and copyright line is the last line of App settings, rather than at the foot of the screen.
• Upright on a phone: the screen no longer turns on a phone; on a tablet, from 600dp wide, it turns as before.
• A bigger target: App settings opens with a tap anywhere on its card, and closes with a tap on its title.
• Touch feedback that fits: Quality's and Appearance's choices light up within their rounded corners, as the buttons do.
• More room between settings: Quality sits a little further below the Sample rate slider, as far as settings stand apart elsewhere.
• Sturdier: a lock detects the encoder again after each restart, so a hardware path, after switching hardware offload in Developer options, can't be taken for software and skip the pause check. A lock's detour via AAC or SBC asks a rate the headphones offer for it, where a pair with AAC at 48 kHz only would wait 5 seconds and end on AAC. On RedMagic, and on a phone whose encoder LDAC Lock can't tell without DUMP, a lock asks again whether music plays right before its first change, as music that started a moment after the tap would silence a hardware encoder; it then says Pause playback first, as at the tap, and changes nothing. The tile no longer shows a lock as holding after Bluetooth was off: once it's on again, it checks whether the lock still holds. The Play/Pause button in Current codec no longer jumps back to Pause after a pause, as on the Astra, where the sound output keeps counting as playing for a while: with DUMP it goes by the state the music app reports to Android, also a while after the pause and back in the app.

1.4

• Calmer corners: the cards, the Current codec panel, Quality's choices and Lock now share one corner, less round than before.
• Even spacing: the Sample rate slider sits close under its name, its bars icon on the name's line, and as far from Quality as the other sections are apart. App settings' ⌄ lines up with the card's content, and its title shows its whole highlight when tapped.

1.3

• New colours: white and light-grey surfaces with one clear blue in light mode, near-black greys in dark; the icon on dark grey, with a touch of that blue. The Hi-Res badge is green, as a lock's line, and Bluetooth off and No headphones connected show in orange.
• Follows the codec: the screen, and the tile while Quick Settings is open, notice the codec changing by itself, such as HIGH falling back to MID, rather than at the next look. One check per change, never on a timer: on Samsung a check reads the Bluetooth stack's state, which keeps it busy for a moment.
• No skips while music plays: reading Samsung's encoder made the audio skip, at its worst when the app came back to the front. While music plays, the screen and the tile now show the encoder as last read, the screen with the time it was read, such as Locked · HIGH quality · checked 08:06, and read it again once playback stops. Without a read for the codec Android reports, the screen says Not verified · checked when playback stops. The Play/Pause button needs no read for a playing app.
• Play and pause in the panel: while a music app plays or waits, a round Play/Pause button shows in Current codec, the key a headset's button sends: pause before a lock where one needs that, play on after. It follows playback in any app, read once per change.
• Sturdier verdicts: the lock, the screen and the tile now judge a lock the same way. Without DUMP a match of rate and bit depth reads Not verified · needs DUMP to read the encoder rather than Locked. On RedMagic a lock also waits for the quality after a change of rate or bit depth, and every lock checks that the same headphones are still playing before each change and before it reports. A lock that fails, as with the headphones gone, no longer turns one that still holds into Not locked. A phone without A2DP offload is no longer taken for a hardware encoder.
• Steadier tile and screen: the tile also notices headphones disconnecting or another pair taking over while Quick Settings is open, checks one at a time, with one more when something changed during a check, reads the encoder once music stops, and never clears a lock that finished after its check began. The screen no longer brings back an old status after the headphones disconnect, and a read that a lock overtook no longer replaces the lock's own.
• App settings: the Settings card is now called App settings; opening it scrolls all of it into view, its lower edge included.

1.2

• Quality in the Lock section: HIGH, LDAC's top quality, or MID for a steadier connection where HIGH keeps dropping out, as in a busy office. Each choice shows its bitrate at the chosen Sample rate: 909 or 606 kbps at 44.1 and 88.2 kHz, 990 or 660 kbps at 48 and 96 kHz. The status, the summary and the tile follow it.
• Sturdier locks: only the headphones Android plays to, never a guess between two pairs; headphones without LDAC are left alone; on RedMagic a change of quality alone is waited for; on Samsung an unreadable encoder shows Not verified instead of Locked, and the tile also notices the encoder falling back to adaptive. A failed lock no longer turns an earlier one into "failed" after a reconnect, and an uncertain encoder detection is read again rather than kept.
• Settings fold away: a tap on the title opens or closes them; closed at first, then as you left them.
• Buttons and choices at one height.
• Headphones throughout, as audiophiles say: Pair headphones, No headphones connected.

1.1

• Android 14 and 15 as well, besides 16 and 17. Untested on those versions so far: the method was worked out on 16 and 17, and an older Bluetooth stack may behave or report differently.
• Sample rate in the Lock section: 44.1, 48, 88.2 or 96 kHz, for the app and the tile alike. Until it's moved, the phone's own: 44.1 kHz on Samsung, 48 kHz on RedMagic. Locks at 88.2 kHz checked on both.
• New icon: a gradient in the logo's blues, with a light-blue padlock between the headphones.

1.0

The first release: LDAC at its highest quality with one tap, on Samsung and RedMagic phones. The APK is attached to the release.

• One tap, from a Quick Settings tile or the app, on the headphones Android is playing to.
• Samsung: a detour via AAC makes the phone reopen the stream, and LDAC ends at 44.1 kHz, 24-bit, top quality (909 kbps), checked against the encoder itself.
• RedMagic: one LDAC change to 48 kHz, 24-bit, top quality (990 kbps), only while playback is paused, as a change during playback silences the audio chip.
• Detects the phone's encoder, software or hardware, and the mixer's rate, once per firmware build. This needs the DUMP permission, granted over adb; without it, LDAC Lock changes nothing during playback.
• A screen with the headphones, the current codec and whether it is locked, that follows the headphones and Bluetooth as they change. Light or dark as the phone is, or as set under Appearance.
• A tile that shows the result: as its second line on Samsung, and as its name on RedMagic, whose round tiles hide that line. Greyed out while Bluetooth is off.
• Small and quiet: 73 KB, no libraries, no internet permission, nothing running in the background, and a start in about 140 ms.