# RCT RESS vs Build SRT

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.

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 12, 2026 respectively.

## The numbers

| Metric | RCT RESS | Build SRT |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/rct-ress/id1577284760/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/build-srt/id6504424008/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | **Free** | Paid |
| Size | 39 MB | 25 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [Jiangsu RCT Power Energy Technology Co., Ltd](https://appshunter.io/developer/1577284762) | [韩 明洁](https://appshunter.io/developer/399378149) |

## What reviewers say

### RCT RESS

[App page](https://appshunter.io/ios/app/rct-ress/id1577284760)

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.

**Highlights:** Monitor inverters, Manage energy storage systems, Household energy solutions, Industrial energy solutions, Grid energy solutions, System monitoring

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Build SRT

[App page](https://appshunter.io/ios/app/build-srt/id6504424008)

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.

**Highlights:** Speech-to-text transcription, Import videos from Photos and Files, Extract audio for SRT generation, Universal SRT file format, Share SRT files easily

**In-app purchases:** none


## Frequently asked questions

### Is RCT RESS free?

RCT RESS is free to download, with no in-app purchases.

### Is Build SRT free?

Build SRT costs $2.99, with no in-app purchases.

### Which has better reviews, RCT RESS or Build SRT?

RCT RESS and Build SRT are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do RCT RESS or Build SRT have ads?

Neither RCT RESS nor Build SRT shows ads.

### Which is updated more often, RCT RESS or Build SRT?

RCT RESS ships an update monthly, and Build SRT every 5 weeks. Most recently, RCT RESS was updated on November 3, 2026 and Build SRT on November 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*