Spectalo Get the beta
Spectalo app icon ✦ Now with Apple Intelligence

Watch films.
Understand every word.

A beautiful video player with on-device AI subtitles and translation. Turn the movies you already love into language lessons — and nothing ever leaves your device.

Get the beta See how it works ↓

Free TestFlight beta · iPhone, iPad & Mac · On-device AI — no account, no cloud.

Spectalo library on Mac with Continue Watching and artwork

On-device AI subtitles

Subtitles for anything.
Even when there are none.

Spectalo transcribes the audio of any video right on your device — no subtitle file required. Powered by Whisper, running locally. No internet, nothing uploaded.

  • Generates subtitles from speech, for any video
  • Reads embedded tracks & Blu-ray PGS (image subtitles, via on-device OCR)
  • Multi-format sidecars: SRT, VTT, ASS/SSA, SMI
Dual subtitles generated and translated live while playing on Mac

Translation that gets the movie

✦ Apple Intelligence

Not a literal translation.
A translation that fits the scene.

Translate as you watch — right on your device. Apple Intelligence is built in and recommended: free, with nothing to download. Prefer something else? Run Gemma locally, use Apple Translation, or bring your own key for Gemini, Claude, and GPT.

  • Apple Intelligence on device — free, nothing to download
  • Reads the film's genre & plot for natural, in-context phrasing
  • Also on-device Gemma, Apple Translation & bring-your-own-key models
AI subtitle and translation engine settings — on-device and bring-your-own-key models

Language learning, built in

Turn any film
into a language lesson.

Watch with dual subtitles — original and translation together. Tap any word for an instant dictionary. Save words with their scene, and review them later — or export to Anki.

  • Dual subtitles (original + translation)
  • Tap-to-define dictionary, on device
  • Vocabulary with the exact scene & line saved
  • Scene review & one-tap Anki export
Tap a word to see an instant dictionary definition and add it to your vocabulary

Learn on the go

Build a vocabulary from
the scenes you watch.

Vocabulary list on iPhone
Scene review flashcard on iPhone
Word saved with its scene on iPhone

Plays everything, everywhere

Your library,
wherever it lives.

Local files, your NAS over SMB, Google Drive, iCloud Drive — Spectalo plays them all. Built on mpv, so MKV, HEVC, 10-bit and the codecs other players choke on just work.

  • Local · NAS / SMB · Google Drive · iCloud Drive
  • MKV, HEVC, 10-bit, multi-track — powered by mpv
  • Stream your Mac's library to iPhone & iPad over your network
Add a source — Google Drive, iCloud Drive, NAS over SMB, or a Mac media server

Made for studying

Write on the frame.
Right when it matters.

On iPad, annotate any frame with Apple Pencil — your notes are tied to the timecode. Perfect for lectures and language study. Export everything as a PDF when you're done.

  • Apple Pencil annotations, pinned to the timecode
  • Snapshot a frame with your notes on it
  • Export your notes as a PDF
Handwritten Apple Pencil notes over a paused frame on iPad

Private by design

The AI runs on your device. Your subtitles, translations, and library are never sent to a server.

Resume across devices

Start on your Mac, finish on your iPhone. Playback position and favorites sync over iCloud.

One app. Every screen.

Native on iPhone, iPad, and Mac.

iPhone iPad Mac

Get the beta

Spectalo is in open beta on TestFlight. Free while in beta.

TestFlight — iPhone & iPad TestFlight — Mac

Requires the TestFlight app. iOS 18+ · macOS 15+.