# Frequency vs Gauge King

The clearest difference is update cadence: Gauge King at every 5 days against Frequency's every 10 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Frequency sells 9 in-app purchases, starting at $7.99 per 7 days and Gauge King sells 1 in-app purchase, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

Frequency ships an update every 10 days, Gauge King every 5 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Frequency | Gauge King |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (24 ratings)](https://appshunter.io/ios/app/frequency-hz-tone-generator/id1671426872/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 8 MB |
| Requires iOS | **16.0** | 17.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Optimize IT](https://appshunter.io/developer/1671426874) | [Mark Ross](https://appshunter.io/developer/1885041786) |

## What reviewers say

### Frequency

[App page](https://appshunter.io/ios/app/frequency-hz-tone-generator/id1671426872)

Generate precise audio frequencies for various purposes, from tuning instruments to cleaning water from speakers. Explore different waveforms and customize sound generation for unique audio experiences. Elevate your audio quality and functionality.

**Highlights:** Generate frequencies from 1 Hz to 40,000 Hz, Clean water/moisture from speakers, Produce sine, triangle, sawtooth, and square waveforms, Tune musical instruments, Select notes and octaves for specific pitches, Play multiple frequencies simultaneously

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $7.99 | per 7 days |
| Weekly | $9.99 | per 7 days |
| Weekly VIP | $9.99 | per 7 days |
| Monthly Premium | $17.99 | per month |
| Monthly | $19.99 | per month |
| Annual VIP | $24.99 | per year |
| Annual Premium | $24.99 | per year |
| Annual VIP | $29.99 | per year |
| Annual | $29.99 | per year |


### Gauge King

[App page](https://appshunter.io/ios/app/gauge-king/id6777585502)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gauge King Premium | $9.99 | per year |


## Frequently asked questions

### Is Frequency free?

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

### Is Gauge King free?

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

### Do Frequency or Gauge King have ads?

Neither Frequency nor Gauge King shows ads.

### Which is updated more often, Frequency or Gauge King?

Frequency ships an update every 10 days, and Gauge King every 5 days. Most recently, Frequency was updated on October 24, 2026 and Gauge King on October 24, 2026.

---

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