SubFloat vs ePdfUB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SubFloat
Enhance language learning by displaying up to three subtitle tracks simultaneously on streaming services. Understand nuances, expand vocabulary in context, and customize the viewing experience.
- Dual subtitles on Netflix and YouTube
- Floating subtitle overlay
- Always-on script navigator
- Optimized for language learning
- Customizable subtitle appearance
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SubFloat: Multilingual Subtitles for Language Learning SubFloat is a powerful tool designed for language learners who want to master a new language while enjoying their favorite content. It brings bilingual subtitles to popular streaming services, making it easier than ever to bridge the gap between watching and learning. Whether you're studying Japanese, Korean, Chinese, or any other language, SubFloat allows you to display upto 3 subtitle tracks simultaneously—your target language and your native language—helping you understand every nuance and expand your vocabulary in context. Key Features: - Dual Subtitles: View two languages at once on Netflix, Disney+, Prime Video, and YouTube. - Floating Interface: A clean, non-intrusive subtitle overlay that moves with you. - Always-On Script Navigator: Browse and search subtitles from the floating script window. - Subtitle Sharing: Export up to 3 language subtitles into a single text file to study. - Optimized for Learning: Perfect for improving listening comprehension and vocabulary. - Fully Customizable: Adjust subtitle size, color, and position to fit your screen. Turn every movie night into a language lesson. Experience the future of bilingual viewing with SubFloat.
ePdfUB
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Say goodbye to rigid, zoom-and-scroll PDFs. All processing happens 100% locally on your device—ensuring absolute privacy and offline capability. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: SubFloat at Free against ePdfUB's $3.99. SubFloat also leads on in-app purchases (none vs 2) and update cadence (fortnightly vs every 2 months). ePdfUB's advantage is ads (none vs shown). On 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
SubFloat is free to download; ePdfUB costs $3.99 up front. ePdfUB sells 2 in-app purchases, starting at $0.99 per year. SubFloat asks for nothing beyond the download.
SubFloat ships an update fortnightly, ePdfUB every 2 months. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.
| Parameter | SubFloat | ePdfUB |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 88.9% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 26.2 |
| Further details — not scored | ||
| Size | 10 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | editoy Inc. | Chia Hsien Wei |
In-app purchases
SubFloat
No in-app purchases
ePdfUB
- Yearly$0.991 Year
- lifetime$2.99









