RCT RESS vs Build SRT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RCT RESS
Monitor and manage inverters and energy storage systems. Developed by an energy storage company, this app offers convenient control over household, industrial, and grid energy solutions.
- Monitor inverters
- Manage energy storage systems
- Household energy solutions
- Industrial energy solutions
- Grid energy solutions
- System monitoring
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RCT RSS is developed by RCT Power, which is convenient for users to use and monitor inverters and energy storage systems. RCT Power is an energy storage system company integrating R&D, production and sales. The products and technologies come from Lake Constance in Germany, and the products cover household, industrial and grid energy storage. In terms of household energy storage, we are one of the few providers of overall system solutions in the world. The three major architectures of energy storage, battery modules, inverter modules and energy management, are all developed and produced by the company itself.
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
Screenshots
Verdict
The clearest difference is price: RCT RESS at Free against Build SRT's $2.99. RCT RESS also leads on iOS requirement (15.6 vs 17.6). On rating, ratings volume, update cadence and ads 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
RCT RESS is free to download; Build SRT costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for RCT RESS against 5.0 for Build SRT. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
RCT RESS ships an update monthly, Build SRT every 5 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | RCT RESS | Build SRT |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 2 — better | 1 |
| Update frequency | Monthly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 15.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 39 MB | 25 MB |
| Age rating | 12+ | 4+ |
| Developer | Jiangsu RCT Power Energy Technology Co., Ltd | 韩 明洁 |
Customer experience
RCT RESS
Build SRT
In-app purchases
RCT RESS
No in-app purchases
Build SRT
No in-app purchases









