# Binaural Purrs vs Sub Keeper Tracker

The clearest difference is ads: Binaural Purrs at none against Sub Keeper Tracker's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Binaural Purrs sells 1 in-app purchase, starting at $5.99 per month and Sub Keeper Tracker sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Binaural Purrs ships an update every 5 days, Sub Keeper Tracker every 9 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Binaural Purrs | Sub Keeper Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/binaural-purrs/id6807500707/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 9 days |
| Monetization | Freemium | — |
| Size | 103 MB | 78 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Binaural Purrs](https://appshunter.io/developer/6807500709) | [Andrii Zhuravskyi](https://appshunter.io/developer/6810368930) |

## What reviewers say

### Binaural Purrs

[App page](https://appshunter.io/ios/app/binaural-purrs/id6807500707)

Experience unique audio companions designed to match your mood. Four distinct cat characters offer original soundscapes, utilizing binaural beats to gently support calm, focus, daydreaming, or deep rest. This app provides a quiet, character-driven audio experience without being a dedicated meditation or productivity tool.

**Highlights:** Four cat companions with original audio, Binaural beats for calm, focus, and rest, Personalized character matching, Designed for headphone use, Original artwork and sound design

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Binaural Purrs | $5.99 | per month |


### Sub Keeper Tracker

[App page](https://appshunter.io/ios/app/sub-keeper-tracker/id6811046840)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $3.99 | per month |
| Support Sub Keeper | $0.99 | one-time |
| Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Binaural Purrs free?

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

### Is Sub Keeper Tracker free?

Sub Keeper Tracker is free to download, with in-app purchases available.

### Do Binaural Purrs or Sub Keeper Tracker have ads?

Sub Keeper Tracker shows ads; Binaural Purrs does not.

### Which is updated more often, Binaural Purrs or Sub Keeper Tracker?

Binaural Purrs ships an update every 5 days, and Sub Keeper Tracker every 9 days. Most recently, Binaural Purrs was updated on October 31, 2026 and Sub Keeper Tracker on November 6, 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.*