RootlessViPER4Android v2.8.2

A big release: the classic ViPER experience, three new reverb rooms, library management, and a fix for idle battery drain.

✨ New

ViPER4Android-only mode — a switch at the top of Settings that narrows the app to the effects V4A shipped, with its naming, its processing order (taken from the original) and its limiter. Everything else is switched off so it uses no resources, and the search, layout editor and groups step aside for the single fixed list V4A had. Turn it off and your own setup comes back untouched.

ViPER4Android classic theme — the classic look with purple accents on neutral grey, flat full-width rows, and the master limiter doubling as the power switch. Available on its own in Appearance, so you can have the look without giving up any features.

Three new reverb rooms — alongside the original ViPER model: a smooth studio Plate (Dattorro figure-eight tank), a large warm Concert hall (8-line feedback delay network with per-band decay), and a natural Room with early reflections. Controls follow V4A naming, and sliders that don't apply to the selected room hide themselves. Thanks to @Menorah for the request and the research.

ViPER classic limiter — a faithful re-creation of the original V4A limiter, with the lookahead, smoothed attack and transient bite that let it run louder before it clamped down. Available as a limiter mode for everyone, and used automatically in V4A-only mode.

Convolver & DDC library management — search your libraries, sort them your way, hide what you don't use, and organise them into groups. The add menu can also download more impulse responses and DDC profiles from public repositories, skipping anything you already have, and you can add your own repository by pasting a link.

Speaker optimization, retuned — the old curve spent most of its effect removing bass a phone speaker can't reproduce. It now works where a small speaker is actually heard, with noticeably more presence and air.

🐛 Fixed

• Idle battery drain — processing kept running through silence whenever an app sat paused holding its audio session. It now stands down after 20 seconds of quiet and resumes instantly on the first sound.
• Parametric EQ — Remove now works on the band you have selected (it was the other way around), and adjusting Q right after dragging a handle no longer snaps the band back.
• Effect card icons — some icons, including Reverberation, could render blank.
• Various fixes to layout groups, the delay panel and the output limiter's unused controls.

📥 Install

Most phones and tablets want arm64-v8a. Use universal if you are unsure. Installs alongside the original RootlessJamesDSP, so you can keep both.

🔐 SHA-256

59e8958872a246854c4af6ee4dd6b7d51cb5855bce789c072c8b260cf1a9d578  arm64-v8a
5309e860e88589815ff4deed56ba035b16f1ce7761c35c2c132faacfbb0d1c90  armeabi-v7a
d82775ed6341e48d72efcd2364b263960427acdaaee2353d2a2dcaa4f4c0c81b  universal
468da5d419632977467cebb6c016b69741385f2acc2c12bf72b3b2b2fef67b9e  x86
4036e0f4c8ba34c02c9c05a954fc90174a3abc15498bfd723dfb75ffc3a80194  x86_64