Subtitles vs Subfast

【Subtitles】字幕提词（Subtitle Prompter）is a professional teleprompter app designed for content creators, presenters, and broadcasters who need reliable script display during recordings or live sessions. **AI Script Analysis** The app analyzes your script structure to optimize reading flow, identifying natural pauses and helping you maintain a steady pace throughout your presentation. **Local Storage** All scripts are stored securely on your device, ensuring quick access and offline availability without relying on cloud services. Your content remains private and accessible anytime. **High-Performance Scrolling Playback** A smooth, customizable scrolling system allows you to adjust speed and display settings to match your recording needs, supporting various screen configurations and viewing distances. **Flexible Display Controls** Configure font size, colors, and background options to create optimal reading conditions for any environment, from bright studios to dimmed settings. **Multi-Device Support** The app works seamlessly across different devices, enabling you to start editing on one device and continue presenting on another with consistent performance. 字幕提词（Subtitle Prompter）provides the essential tools for professional script presentation, helping you deliver confident and polished performances every time. Premium Account Pricing and Terms $ 4.99/week* $ 39.99/year* *Prices shown are in U.S. dollars; actual charges may be converted to your local currency. Payment will be charged to your iTunes account at confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the renewal cost will be provided. Subscriptions can be managed by the user. Turning off auto-renewal may be done by going to your account settings after purchase. Cancellation of the current subscription is not allowed during the active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://fenwoon.xyz/zimutici/privacy.html

Subfast adds captions and zoom effects to any video on your iPhone — entirely on-device, without uploading a single byte. Pick a video from Photos or Files. Add caption cues at precise timestamps, type your text, and export as SRT, VTT, or burn them directly into a new MP4. Add zoom moments anywhere on the timeline — a smooth 3-second zoom-in/out animation plays when the video reaches that point. Everything stays on your phone. No cloud, no upload. Sign in with Apple to start your free trial. WHAT YOU CAN DO • Caption any video — MP4, MOV, anything iOS can read • Add caption cues manually — type text, set precise start and end timestamps • Add zoom moments — a 3-second zoom animation triggers at any point you choose • Highlight every word as it's spoken, karaoke-style • Edit transcript text and timing in a clean inline editor • Export as SRT, VTT, plain text, or burn captions directly into a new MP4 PRIVATE BY DESIGN Other subtitle apps upload your video to their servers. We don't. We can't. Apple's on-device frameworks handle every step locally — the same chip that runs your camera and Face ID is doing the work. That means: • Subfast works on a plane, in a tunnel, anywhere • Sensitive footage stays sensitive • Sign in with Apple to start your free trial ZOOM EFFECTS THAT POP Tap anywhere on the timeline to drop a zoom moment. When your video reaches that timestamp, Subfast plays a smooth 3-second zoom-in/out animation — the same punchy effect that makes short-form content stop the scroll. Add as many zoom moments as you want throughout your clip, then export to MP4 with everything baked in. BUILT FOR CONTENT CREATORS Burn captions into your vertical clip in seconds — no re-export, no extra app. Pair captions with zoom moments to punch up high-energy scenes. Export industry-standard SRT and VTT for editing in Final Cut, DaVinci, or CapCut. BUILT FOR SOCIAL VIDEO Going viral on TikTok, Instagram Reels, or YouTube Shorts starts with captions. Subfast burns captions into your vertical clip in seconds — no re-export, no extra app. Add zoom moments to punch up the high-energy parts and keep viewers watching. Podcast creators and video bloggers can subtitle their clips, export a clean SRT or VTT file, and drop it into any editing timeline — without leaving their workflow. BUILT FOR ACCESSIBILITY Closed captions for personal video collections that don't have any. Dynamic Type-friendly UI. VoiceOver throughout. PRICING Subfast is free to try for 7 days — no payment method required to start. Subscriptions auto-renew until cancelled. You can cancel anytime in iOS Settings → Apple ID → Subscriptions. Your free trial does not auto-convert to a paid subscription unless you actively subscribe. Payment will be charged to your Apple ID account at the confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period at the chosen plan's price. Subscriptions can be managed by the user, and auto-renewal may be turned off, by going to the user's Account Settings after purchase. Privacy Policy: https://subfastapp.vercel.app/en/privacy Terms of Service: https://subfastapp.vercel.app/en/terms