SubVi vs @Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SubVi
Enhance English language skills through interactive video learning. Features include subtitle translations, dictation exercises, speech recognition for pronunciation practice, and vocabulary building. Access content from your favorite YouTube channels with subtitles.
- Side-by-side subtitle translations
- Dictation exercises for listening comprehension
- Speech recognition for pronunciation practice
- Vocabulary building and exercises
- Video summaries for Ted and Ted-Ed
- Access YouTube videos with subtitles
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SubVi (Subtitle Video) project helps users learn English effectively with Dictation, Speech recognition, and Quizzes. Videos are sourced from subscribed YouTube channels. ## Features. - **Subtitle**: Watch YouTube videos with their subtitles and side-by-side translations. - **Quiz**: Test your understanding with short quizzes after watching a video (Only support Ted and Ted-Ed). - **Video Summary**: Read a summary of the video if you prefer not to watch it (Only support Ted and Ted-Ed). - **Dictation**: Listen to an English video clip and write down exactly what's being said. It's a highly effective way to improve English listening comprehension, as dictations force you to carefully consider every word and sound you hear. - **Speaking**: Practice speaking and pronunciation using speech recognition technology that converts your speech into text. After listening to an English video clip, repeat after the speaker, and the app will convert your speech into text for comparison. Your speech will be scored based on the Dice coefficient formula. - **Translation**: View side-by-side translations alongside subtitles while doing dictations and speaking exercises. The app supports translations in over 60 languages. - **Vocabularies and Exercises**: Take notes of new words (vocabulary, phrases, etc.) while doing dictations and speaking exercises, and practice with vocabulary exercises. - **Watch Videos from Your Favorite YouTube Channels**: Unlike other apps, this app allows you to watch videos from your favorite YouTube channels as long as the video has subtitles. - **Search Any Videos on YouTube**: Easily search for any videos on YouTube within the app. ## Terms of Service and Privacy Policy. By using this app, you agree to be bound by the following Terms of Service and Privacy Policy: - [Forever102 Terms of Service and Privacy Policy](https://forever102.com/terms-of-service-and-privacy-policy.html). - [YouTube Terms of Service](https://www.youtube.com/t/terms). - [Google Privacy Policy](https://policies.google.com/privacy?hl=en-US). ## Contact. - [Website](https://forever102.com). - [Email](admin@forever102.com). We appreciate all suggestions and comments from our users. Please feel free to give us any feedback, and if you enjoy our apps, consider leaving a review. > **NOTE**: All channels and videos are provided by the public third-party media service YouTube.
@Calculator
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The calculator with graphic visualization uses the latest Apple technology! Visualize not only fractions but also mathematical operations on them. The neumorphic design brings it to the 3D dimension and the haptics makes you feel every gentle press of a key ... The unique and rich color palette will allow you to personalize your iPhone and iPad and make it perfect for your office, home... and even your watch or bag. In addition, you can choose the shape of the buttons: from the classic square to the circle.
Screenshots
Verdict
The clearest difference is price: SubVi at Free against @Calculator's $4.99. SubVi also leads on iOS requirement (13.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
SubVi is free to download; @Calculator costs $4.99 up front. SubVi sells 2 in-app purchases, starting at $0.99 per month and @Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | SubVi | @Calculator |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 2.5 (4 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Fortnightly | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 39 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Tuan Duong | Mikolaj Adamowicz |
In-app purchases
SubVi
- Monthly subscription.$0.991 Month
- Yearly subscription.$10.491 Year
@Calculator
- Premium Colors$1.99









