v1.2.0

Changes

New Feature: Favorites

• New favorites window with a floating button
• Add favorite words: star entries from the dictionary popover or sidebar card
• Favorite words are highlighted in the transcript, live section, and HUD
• Favorite words rank first in lookups and match through conjugated forms

Improvements & Fixes

• Significantly improved tokenizer readings, better segmentation & no more long word segment
• Improved word boundary recovery for collapsed runs, numeral readings, and multi-segment joins
• Fix taps landing on the wrong segment
• Fix halfwidth kana in alignment and romaji
• Fix dictionary badges overflowing into a wrapped layout

Requirements

• Mac with Apple Silicon
• macOS 15.5 or newer
• System audio permission when prompted
• Internet connection for the first-launch model download (and for cloud translation providers, if enabled)

Install

1. Open Mimidasu-1.2.0.dmg and drag Mimidasu to Applications.
2. Launch Mimidasu and follow the onboarding to download the ASR model.

Feedback

Found a bug or anything odd? Please open an issue with:

• What you were doing when it happened
• The model in use (Lite / Full)
• macOS version and Mac model

v1.1.0

Changes

• Automatically switch to Apple Intelligence for better translation on macOS 26.4+ if available
• Add 18 more language translation support
• Add jump-to-ends button on hud history
• Add translation-only overlay panel
• Add copy button to dictionary not-found card
• Add link pointer style on toast actions
• Now only sentences containing Japanese characters gets appended to the list
• Fix some tokenizer readings

Requirements

• Mac with Apple Silicon
• macOS 15.5 or newer
• System audio permission when prompted
• Internet connection for the first-launch model download (and for cloud translation providers, if enabled)

Install

1. Open Mimidasu-1.1.0.dmg and drag Mimidasu to Applications.
2. Launch Mimidasu and follow the onboarding to download the ASR model.

Feedback

Found a bug or anything odd? Please open an issue with:

• What you were doing when it happened
• The model in use (Lite / Full)
• macOS version and Mac model

v1.0.0

Features

• Real-time transcription — captures your Mac's system audio with a Core Audio process tap and transcribes Japanese speech as it's spoken (partials in the HUD, finalized sentences in the transcript).
• On-device translation — Japanese → English via Apple's Translation framework by default; optional cloud providers (Google Translate, DeepL, OpenRouter) with retry/fallback, a cloud disclosure prompt, and Keychain-stored API keys.
• Floating subtitle HUD — always-on-top, semi-transparent, click-through overlay that steps through translated entries without covering your video.
• Reading aids — toggle inline romaji or furigana over the transcript.
• Tap-to-lookup dictionary — click any word for definitions, pitch accent, and JLPT level from a bundled dictionary database, with homograph paging and name-entry badges.
• Session export — save transcripts as TXT, SRT, VTT, or JSON.

Requirements

• Mac with Apple Silicon
• macOS 15.5 or newer
• System audio permission when prompted
• Internet connection for the first-launch model download (and for cloud translation providers, if enabled)

Install

1. Open Mimidasu-1.0.0.dmg and drag Mimidasu to Applications.
2. Launch Mimidasu and follow the onboarding to download the ASR model.

Feedback

Found a bug or anything odd? Please open an issue with:

• What you were doing when it happened
• The model in use (Lite / Full)
• macOS version and Mac model