Build SRT vs Subfier
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Build SRT
This utility converts spoken audio from videos into standard SRT subtitle files. It supports importing videos from your device and offers efficient sound extraction for subtitle generation. The generated SRT files are universally compatible and easily shareable.
- Speech-to-text transcription
- Import videos from Photos and Files
- Extract audio for SRT generation
- Universal SRT file format
- Share SRT files easily
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Build SRT leverages Apple’s built-in speech recognition framework to convert spoken audio into text. You can use the system’s native speech-to-text functionality to experience its transcription accuracy firsthand. To complement the limitations of the built-in recognizer, the app also supports manual import of natural language text, offering greater flexibility in subtitle creation. The app generates subtitle files in standard SRT format, but it does not produce new video files with embedded subtitles. The "Build SRT" App can efficiently extract the voice in the video and convert these sounds into subtitle SRT files. The generated subtitle SRT file is a universal subtitle file format, so that you can use the subtitle SRT file widely. Features: • It is very convenient to import videos from the system "Photos" and "Files" • Import videos at the same time and view subtitles according to the video at a glance • Efficiently and quickly extract the sound in the video and convert it into an SRT file • SRT files can be quickly shared on other devices.Support sharing, copying, spacing and forwarding on Apple system to facilitate exporting SRT files for modification and use. • SRT files are a universal subtitle file format and can be used widely. Support: If you have any suggestions and comments, please do not hesitate to contact the developer: Email: hanmingjie@gmail.com WeChat: MingJie-Han
Subfier
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The best and most modern way to translate srt files.
Screenshots
Verdict
The clearest difference is price: Subfier at Free against Build SRT's $2.99. Subfier also leads on update cadence (daily vs every 5 weeks) and iOS requirement (15.1 vs 17.6). 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
Subfier is free to download; Build SRT costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Build SRT ships an update every 5 weeks, Subfier daily. The most recent releases landed on September 24, 2026 and September 26, 2026 respectively.
| Parameter | Build SRT | Subfier |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 25 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | 韩 明洁 | Barham Khalid |
In-app purchases
Build SRT
No in-app purchases
Subfier
No in-app purchases









