# Z vs Vitalsleuth Mobile

The clearest difference is in-app purchases: Z at none against Vitalsleuth Mobile's 1. Z also leads on ratings volume (522 vs 1). Vitalsleuth Mobile's advantage is update cadence (every 8 days vs every 2 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. Vitalsleuth Mobile sells 1 in-app purchase, starting at $24.99 per year. Z asks for nothing beyond the download.

Vitalsleuth Mobile holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Z has 522 ratings behind it against 1, so its average is the more settled of the two.

Z ships an update every 2 months, Vitalsleuth Mobile every 8 days. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Z | Vitalsleuth Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (522 ratings)](https://appshunter.io/ios/app/z-app/id1509263287/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vitalsleuth-mobile/id6737725454/reviews)** |
| Number of ratings | **522** | 1 |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | **Free** | Subscription |
| Size | 17 MB | 48 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Allt Hitt ehf](https://appshunter.io/developer/1509263286) | [Vitalsense App, LLC](https://appshunter.io/developer/1660458372) |

## What reviewers say

### Z

[App page](https://appshunter.io/ios/app/z-app/id1509263287)

Generate audio frequencies for personal wellness and experimental use. Explore over 1300 sequences for frequency-based practices on your mobile device. This app is for wellness exploration and is not a medical device.

**Highlights:** Rife frequency generator, Over 1300 sequences, Audio frequency generation, Wellness exploration, Mobile and tablet use

**In-app purchases:** none

**What reviewers like**

- 🚀 Amazing support for health
- 👍 Help that is accessible
- 🤯 Astounded me
- 📚 Comprehensive List!
- 💫 Love it!

**What reviewers complain about**

- 🐛 Frozen during session
- 🐛 Frozen
- 🐛 Doesn't stay on
- 🐛 Not working
- 🐛 Stopped playing sound

**Reported bugs**

- Freezing during session
- Stopping playback when interrupted
- Compatibility issues with newer OS
- Lack of TMJ frequency
- Unexpected volume adjustments

**Requested features**

- Sawtooth tone
- Multiple frequencies
- Play controls
- Dark mode
- Back button


### Vitalsleuth Mobile

[App page](https://appshunter.io/ios/app/vitalsleuth-mobile/id6737725454)

Monitor the activity of loved ones who live alone by tracking their phone usage patterns. Receive alerts when there's an unusual lag in their interaction, prompting you to check in. Authorize contacts to set activity thresholds and receive notifications for peace of mind.

**Highlights:** Monitor loved ones' phone activity, Receive alerts for unusual activity lags, Authorize contacts for subscriptions, Set activity thresholds, Send checkups and receive confirmations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vitalsleuth Subscription | $24.99 | per year |


## Frequently asked questions

### Is Z free?

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

### Is Vitalsleuth Mobile free?

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

### Which has better reviews, Z or Vitalsleuth Mobile?

Vitalsleuth Mobile is rated higher. Z averages 4.8 out of 5 from 522 ratings, while Vitalsleuth Mobile averages 5.0 from 1 ratings.

### Do Z or Vitalsleuth Mobile have ads?

Neither Z nor Vitalsleuth Mobile shows ads.

### Which is updated more often, Z or Vitalsleuth Mobile?

Z ships an update every 2 months, and Vitalsleuth Mobile every 8 days. Most recently, Z was updated on November 11, 2026 and Vitalsleuth Mobile on November 4, 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.*