# Frequency vs PGDSP

The clearest difference is ads: PGDSP at none against Frequency's shown. PGDSP also leads on iOS requirement (12.0 vs 16.0). Frequency's advantage is update cadence (fortnightly vs every 2 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Frequency ships an update fortnightly, PGDSP every 2 months. The most recent releases landed on September 21, 2026 and December 19, 2025 respectively.

## The numbers

| Metric | Frequency | PGDSP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (340 ratings)](https://appshunter.io/ios/app/frequency-sound-generator/id6474342664/reviews)** | — |
| Number of ratings | **340** | — |
| Positive reviews | 69.6% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 7 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lucija Jaksic](https://appshunter.io/developer/1721391925) | [PGDSP](https://appshunter.io/developer/1848517134) |

## What reviewers say

### Frequency

[App page](https://appshunter.io/ios/app/frequency-sound-generator/id6474342664)

Generate various sound waves, including sine, square, sawtooth, and triangle, with adjustable frequencies from 1Hz to 22000Hz. Visually observe animated sound waves and control volume. Useful for testing hearing, speakers, instruments, and even cleaning water from speakers.

**Highlights:** Generate sine, square, sawtooth, triangle waves, Adjustable frequency (1Hz-22000Hz), Animated sound wave visualization, Volume control (0-100%), Note selection, Speaker cleaning function

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use interface
- 🎵 Accurate frequency generation
- 💰 Free application
- 🧘 Helpful for meditation and stress relief
- 🔧 Multiple waveform options (sine, square, triangular, sawtooth)

**What reviewers complain about**

- 📢 Intrusive and inappropriate advertisements
- 🔊 Potential audio damage to speakers/hearing
- 🔒 Privacy concerns and data collection issues
- 📱 UI elements off-screen on compact devices
- 🎚️ Difficult frequency selection with slider

**Reported bugs**

- Slider snaps to certain numbers, skipping decimals
- Missing specific frequencies (431Hz, 432Hz, 128Hz)
- Settings/controls off-screen on smaller devices
- App crashes when switching between applications

**Requested features**

- Manual text input for precise frequency selection
- Ad-free paid version option
- Timer feature for sessions
- Digital tuning with +/- buttons on main screen
- Background image customization or frequency healing chart


### PGDSP

[App page](https://appshunter.io/ios/app/pgdsp/id6754499894)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Frequency free?

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

### Is PGDSP free?

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

### Do Frequency or PGDSP have ads?

Frequency shows ads; PGDSP does not.

### Which is updated more often, Frequency or PGDSP?

Frequency ships an update fortnightly, and PGDSP every 2 months. Most recently, Frequency was updated on September 21, 2026 and PGDSP on December 19, 2025.

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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.*