Your files stay on your Mac.
Converting Monkey's Audio (APE) to Apple M4A decodes the lossless waveform and re-encodes it as AAC inside an M4A container — the native format for Apple Music, iPhone, and iTunes. You set the quality, Convertessa does the work, and every file stays on your Mac. Drop a single track or an entire folder; the batch engine handles both.
Drag one or more .ape files — or a whole folder — onto Convertessa. The batch engine queues them all at once.
Choose Apple M4A from the output list. Adjust the AAC quality slider to taste — higher quality means a larger file, lower means a smaller one.
Click Convert. Convertessa decodes each APE file locally and writes an M4A alongside the original. No upload, no internet required.
Images, audio, video, documents, archives and eBooks — all converted natively, right on your Mac.
Pick a format you have — see everything Convertessa can turn it into.
Convert hundreds of files at once with per-type group defaults and individual overrides.
First-class support for HEIC, AVIF and WebP — encode and decode, both ways. Read JPEG XL and a dozen more modern formats too.
Drop files anywhere on the window. Native, instant, and exactly what you’d expect on a Mac.
Dial in compression, resolution and bitrate. Keep originals pristine or shrink for sharing.
Never overwrite a file by accident. Convertessa appends safe suffixes automatically.
Every job is logged locally. Re-run a previous conversion or revisit recent outputs in a click.
Bundle your converted files straight into a single ZIP, TAR or 7z — packaged and ready to share the moment a job finishes.
Right-click any file in Finder and choose Convert. A Quick Action handles it on the spot — no need to open the app first.
Shrink Convertessa to a tidy mini window that tucks into a corner — just a drop zone and a format picker for quick, one-off conversions.
No cloud. No account. No upload. Every conversion happens entirely on-device, using the power already in your Mac. What you convert is nobody’s business but yours.
Script conversions, wire them into your build, or batch a folder from the terminal. The same engine, no GUI required.
Read the full CLI documentation →Shrink Convertessa down to a small, focused window — drop, convert, done, with your recent conversions one click away.
macOS 14+ · Apple Silicon & Intel
New formats, new features, and fixes — every release, on the record.
Yes. Monkey's Audio is lossless; Apple M4A uses AAC, a lossy codec. Some detail is discarded during encoding. Set quality to the highest level you need to minimise audible difference — Convertessa gives you full control over that setting.
Yes. Drop a folder onto Convertessa or pass a directory in the CLI (convertessa ./library --to m4a) and every .ape file inside is queued and converted in one run.
No. Convertessa runs entirely offline on your Mac. Your APE files are decoded and re-encoded locally; nothing is transmitted to a server.