# CDM Captions vs SoundClass

The clearest difference is in-app purchases: CDM Captions at none against SoundClass's 7. CDM Captions also leads on ads (none vs shown) and iOS requirement (12.0 vs 26.0). SoundClass's advantage is update cadence (every 10 days vs every 47 months). On price and device support there is nothing between them.

Both are free to download. SoundClass sells 7 in-app purchases, starting at $4.99 per month. CDM Captions asks for nothing beyond the download.

CDM Captions ships an update every 47 months, SoundClass every 10 days. The most recent releases landed on November 2, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CDM Captions | SoundClass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (10 ratings)](https://appshunter.io/ios/app/soundclass/id1511338627/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 47 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 24 MB | 54 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [CINE DIGITAL](https://appshunter.io/developer/520480515) | [Javier Ariel Bargas](https://appshunter.io/developer/1511337275) |

## What reviewers say

### CDM Captions

[App page](https://appshunter.io/ios/app/cdm-captions/id1039426501)

This app synchronizes your smartphone with movie showings in cinemas. It allows you to read text information, such as subtitles or hearing-impaired channels, directly on your device.

**Highlights:** Synchronize smartphone with movie showings, Read hearing-impaired channels, Access language subtitles, Display text information on device

**Features:** macOS Compatibility

**In-app purchases:** none


### SoundClass

[App page](https://appshunter.io/ios/app/soundclass/id1511338627)

This app uses AI to detect and record various sounds in your environment, providing real-time alerts. It's particularly useful for nighttime awareness, sleep analysis, and documenting incidents.

**Highlights:** AI sound detection, Real-time alerts, Sleep quality analysis, Sound recording and playback, Mosquito and animal sound detection, Everyday sound identification

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold Monthly | $4.99 | per month |
| Gold Yearly | $44.99 | per year |
| Battery x 10 | $0.99 | one-time |
| 100 Credits | $0.99 | one-time |
| Battery x 40 | $1.99 | one-time |
| 500 Credits | $2.99 | one-time |
| 1000 Credits | $4.99 | one-time |


## Frequently asked questions

### Is CDM Captions free?

CDM Captions is free to download, with no in-app purchases.

### Is SoundClass free?

SoundClass is free to download, with in-app purchases available.

### Do CDM Captions or SoundClass have ads?

SoundClass shows ads; CDM Captions does not.

### Which is updated more often, CDM Captions or SoundClass?

CDM Captions ships an update every 47 months, and SoundClass every 10 days. Most recently, CDM Captions was updated on November 2, 2026 and SoundClass on October 24, 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.*