From the home screen, tap the big Record button. The app starts capturing audio immediately, using the codec, bitrate and sample rate set in Settings. Tap Stop to finish — your file appears in the file list.

If a foreground notification appears, that is normal: Android requires it to keep the recording alive when the screen turns off.

A quick guide:

• MP3 — universal, good size/quality trade-off, works everywhere.
• M4A (AAC) — like MP3 but smaller at the same quality. Good default.
• OGG Vorbis / OPUS — open formats, smaller than MP3. OPUS is excellent for voice at low bitrate.
• FLAC — lossless. Bigger files, but no quality loss. Use for music or archival.
• WAV (PCM) — uncompressed. Largest files, perfect quality. Use for editing/processing.
• WMA — for compatibility with Windows-only workflows.
• Speex — older voice codec, low bitrate, narrow-band.

Change the format any time in Settings → Recording → Format.

By default, RecForge II writes to the Music public folder. Files there are visible over USB and survive an uninstall.

You can change the destination in Settings → Storage. If you pick a private RecForge folder, files are app-private and deleted on uninstall — back up regularly.

No — Android only allows one app at a time to access the microphone. Close other recording or call apps first.

Open Schedule (from the side menu), tap +, choose a date and time, the duration and the codec. Optionally set a repeat pattern (e.g. every weekday at 9 a.m.).

Tip: schedules survive a reboot. The first time you schedule, Android may ask for the Boot completed permission so the app can re-arm its alarms.

Open the file from the file list. The waveform editor opens. Long-press to set the begin and end of a selection, then choose Cut, Crop, Merge or Concat from the action menu.

You can also place markers at points of interest (long press on the waveform, then move them) — markers stay with the file.

Yes. From the file list, long-press a file (or use the file picker for files outside the RecForge folder), then choose Convert and pick the target codec, sample rate and bitrate. RecForge II decodes the source and writes a new file in the format you chose.

This works with audio files (.mp3, .ogg, .wav, .wma, .flac, .opus, .m4a, .aac, .amr, .3gp, .ac3, .eac3, .mp2, .m2a, .mka) and with video files (.mp4, .mkv, .avi, .mov, .webm, .flv, .ogv, .wmv, .3g2, .m4v, .f4v) — the audio track is extracted and re-encoded.

While playing a file, open the Advanced playback panel. You'll see three sliders:

• Tempo — speed without changing the pitch (handy for transcription, music practice).
• Pitch — pitch without changing the speed (transposition).
• Rate — speed and pitch together (classic fast-forward).

If you want to keep the modification, tap Export with modifications to write a new file with the time-stretching applied.

Long-press a file in the file list, choose Edit tags. You can edit title, artist, album, year, genre, comment and cover art. RecForge II writes the tags using the right format for the codec (ID3v2 for MP3, Vorbis comments for OGG/OPUS, iTunes-style for M4A, etc.).

The free version is ad-supported. To remove ads, you have two options:

• buy the Premium bundle from inside the app, or
• install the separate RecForge II Pro listing on the Play Store.

You can also revoke ad consent (still ad-supported but with non-personalized ads) in Settings → Privacy → Reopen consent form.

A few common causes:

• The phone was off at scheduled time.
• Battery optimization killed the app. Add RecForge II to the battery whitelist (Android Settings → Apps → RecForge II → Battery → Don't optimize).
• The microphone was busy (another app, an active call).
• Storage was full.
• After a reboot, the app needs to re-arm its alarms. The Boot completed permission must be granted.

If you record into the Music public folder (default), recordings are visible over USB and you can simply copy them to your computer. They also survive an uninstall.

If you record into a private folder, use the Share action to send them to Drive, Dropbox or your email — or copy them via USB while RecForge II is installed (an MTP transfer can see app-private folders on most devices).