# Build SRT vs Smart Sleep Timer

The clearest difference is price: Smart Sleep Timer at Free against Build SRT's $2.99. Smart Sleep Timer also leads on ratings volume (5 vs 1). Build SRT's advantage is update cadence (every 5 weeks vs every 8 months). On rating, ads, in-app purchases and device support there is nothing between them.

Smart Sleep Timer 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 Build SRT against 5.0 for Smart Sleep Timer. That said, the two scores are not equally well evidenced: Smart Sleep Timer has 5 ratings behind it against 1, so its average is the more settled of the two.

Build SRT ships an update every 5 weeks, Smart Sleep Timer every 8 months. The most recent releases landed on September 24, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Build SRT | Smart Sleep Timer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/build-srt/id6504424008/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/smart-sleep-timer/id6739953694/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 8 months |
| Monetization | Paid | **Free** |
| Size | 25 MB | 11 MB |
| Requires iOS | **17.6** | 18.2 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [韩 明洁](https://appshunter.io/developer/399378149) | [BRIDGETECH SOLUTIONS LIMITED](https://appshunter.io/developer/497840921) |

## What reviewers say

### 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


### Smart Sleep Timer

[App page](https://appshunter.io/ios/app/smart-sleep-timer/id6739953694)

This app automatically pauses your media playback when you fall asleep or at a set time. It integrates with your favorite audio and video apps to prevent wasted battery and data.

**Highlights:** Snore detection for automatic pausing, Customizable manual timers, Seamless integration with media apps, Battery and data saving, Adjusts to user's sleep patterns

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

**In-app purchases:** none


## Frequently asked questions

### Is Build SRT free?

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

### Is Smart Sleep Timer free?

Smart Sleep Timer is free to download, with no in-app purchases.

### Which has better reviews, Build SRT or Smart Sleep Timer?

Build SRT and Smart Sleep Timer are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do Build SRT or Smart Sleep Timer have ads?

Neither Build SRT nor Smart Sleep Timer shows ads.

### Which is updated more often, Build SRT or Smart Sleep Timer?

Build SRT ships an update every 5 weeks, and Smart Sleep Timer every 8 months. Most recently, Build SRT was updated on September 24, 2026 and Smart Sleep Timer on October 3, 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.*