Ouch! No dub? No worries.
Momotako is a Chrome extension with a small Mac helper. It reads a show's subtitles a moment ahead and speaks them in natural English voices while you watch. Momo works right here on your Mac.
Needs a Mac with Apple silicon (M1 or later) and Google Chrome.
Momo shows you how
A quick tour of the extension: press Start, watch it dub, and find your way around voices, characters and the sound mix.
A line, a moment later, in English
The subtitle appears in the player. Momotako already read it, cast a voice, and speaks it while the original audio ducks underneath. If it falls behind, it catches up on the next line.
待って、終電は零時に出るの！
DubbingRin · Girl
“Wait for me — the last train leaves at midnight!”
42 lines0.8 s behind3 characters
Placeholder lines. Momotako works with the subtitles of what you're already watching; it never ships or shows any show.
Three steps, no setup each time
-
1
Open an episode with subtitles on
On a streaming site whose player shows subtitles, turn them on: English, or Japanese with Standard.
-
2
Press Start in the extension
Open Momotako from Chrome's toolbar. The first time, the voices take about 40 seconds to wake up on your Mac. After that they're ready when you are.
-
3
Hear it in English
Each line is spoken a moment after it appears, in the voice cast for that character. Press Stop whenever you like; the original audio comes right back.
Nothing is uploaded.
The voices run on your own Mac, and so does the Japanese translation. The subtitles, the audio and your character names stay on your machine.
- The English voices are generated on your Mac, on the Apple silicon chip. No server is involved.
- Japanese subtitles are translated on your Mac too. Nothing is sent anywhere to be translated.
- The dub itself needs no account. The beta download only asks for an email, so we can tell you about updates.
One steady voice, or a whole cast
Pick one voice for every line, or let Momotako cast each character from the subtitles' speaker names. Eight arms, up to eight voices at once. Lower and higher voice styles are just that: styles of the English voice, not a claim about the character.
Other voices: Hero, Kid, Steady, Tough, Elder, Villain, Girl, Bright, Strong, Young, Lady. Your pick for a character lasts until Chrome closes.
| Character | Lines | Voice |
|---|---|---|
| Rin | 18 | Girl |
| Kaito | 14 | Hero |
| The captain | 7 | Steady |
| The stranger | 3 | Villain |
Light, Standard or Expert
Both dub from the subtitles the player already shows. Standard adds a translator for Japanese subtitles, so it can dub an episode that has no English subtitles at all. Expert has the biggest bag of tricks: it dubs on many sites with a standard video player (we've tested Crunchyroll end to end), and when there are no subtitles at all, Momo listens to the Japanese instead.
| Feature | Light | Standard | Expert Coming soon |
|---|---|---|---|
| English subtitles spoken in English voices | Yes | Yes | Yes |
| Japanese subtitles translated, then spoken | No | Yes | Yes, with the more accurate translator |
| Per-character casting, up to eight voices | Yes | Yes | Yes, from 19 English voices, with a Characters panel |
| Original audio lowered under the dub | Yes | Yes | Yes |
| Everything runs on your Mac | Yes | Yes | Yes |
| Dubs on many sites with a standard video player (tested end to end on Crunchyroll) | No | No | Yes |
| No subtitles? Momo listens to the Japanese and dubs from that | No | No | Yes |
| Spanish dubs too (5 Spanish voices) | No | No | Yes |
| Emotional delivery, optional | No | No | Yes |
| Free memory (RAM) it needs while dubbing | About 3 GB | About 8 GB | About 13 GB (needs a Mac with at least 16 GB) |
| Download size | About 0.5 GB | About 4.5 GB | About 15 GB (about 35 GB free disk space to install; about 18 GB once installed) |
| Price | Free beta | Free beta | US$59 founding price for the first 250 licenses sold, then US$89. One-time, 2 Macs per license. Prices in US dollars; the full price, including any VAT or sales tax, is shown before you pay.US$59 founding, first 250 licenses · then US$89 · one-time · 2 Macs · any tax shown before you pay |
Macs share memory between the chip and the graphics, so there's no separate video memory (VRAM) to check. Any Apple silicon Mac with 8 GB runs Light; Standard wants 16 GB. Expert needs at least 16 GB and about 35 GB of free disk space to install. During the beta there is nothing to buy.
Momotako isn't affiliated with or endorsed by Crunchyroll or any other video site.
Coming soon What Momo is learning next
- Bring your own API key. Not enough memory? Connect your own AI provider and pay them directly. You'll see what it costs as you watch. This one sends lines to that provider, so it's always your choice to switch it on.
Get the free beta
Momotako is in beta for Mac users with an Apple silicon chip. Leave your email and get the download right away. We'll let you know when there's an update.
On your phone? Leave your email and we'll send you the link to open on your Mac.
Questions
Which Macs does it run on?
Any Mac with Apple silicon: M1 or later. Intel Macs can't run the voices fast enough, so they're not supported. You also need Google Chrome.
Which sites work?
Right now, Crunchyroll in Google Chrome. That's the one we've tested end to end. We're adding more, and the extension tells you on each page whether it can read the subtitles there.
Is it free?
Light and Standard are free. Expert is coming soon for a one-time US$59 (founding price for the first 250 licenses sold), then US$89. There's nothing to buy yet.
Does it upload anything?
No. The voices and the translation run on your Mac. Nothing about what you watch leaves your machine.