Getting started
How to get started with Deep In, and answers to common questions
Deep In has no placement test and no set programme, so getting started is about choosing good material and building a habit. Here’s the path, then straight answers to common questions.
The steps and answers below follow the app’s own listings and site, checked on 2026-09-24. Subscription prices are shown in the app and aren’t quoted here.
Step 1: download and open
Get Deep In from the App Store (iOS 15.1 or later) or Google Play and open it. New subscribers can start with a free trial.
Step 2: pick a video you’d watch anyway
Browse the catalogue by topic, or add a YouTube video from the home screen. The app lets you know when its transcript is ready.
Step 3: watch with subtitles, pause often
Use the two-language subtitles, and stop whenever a phrase slips past you. Tap it and let Solomia explain the meaning, the context, and how it sounds.
Step 4: save what you want to keep
Save words and phrases as you go; each one stays attached to the sentence it came from.
Step 5: review and speak
Work through your saved phrases as flashcards or with Solomia, then talk about the video by voice to put the new language to use.
| Step | What you do |
|---|---|
| 1. Download | App Store (iOS 15.1+) or Google Play; new subscribers can start a free trial |
| 2. Pick a video | Browse by topic or add a YouTube video from the home screen |
| 3. Watch | Two-language subtitles; pause and tap a phrase for Solomia |
| 4. Save | Keep words and phrases with the sentence they came from |
| 5. Review and speak | Flashcards or Solomia, then talk about the video by voice |
Frequently asked questions
How much does Deep In cost?
It’s free to download; full use is by monthly, six-monthly, or yearly subscription, with a free trial for new subscribers. Prices are shown in the app before purchase.
How do I cancel?
The subscription is managed in your App Store or Google Play account settings, and has to be cancelled at least 24 hours before the period ends to avoid renewal.
Which language does it teach?
It’s built around English; the latest update also accepts YouTube videos in other languages.
Is it related to Deepin Linux?
No. The developer states Deep In (deepin.world) is a separate product with no affiliation to the Deepin operating system.
Why is it rated 17+?
It works with real YouTube content, which isn’t filtered for younger audiences.
Does it guarantee fluency?
No. It’s a learning aid; progress depends on how much and how regularly you watch, review, and speak.