# Spectrum Compact Simulator vs Frequency

The clearest difference is rating: Frequency at 4.7 against Spectrum Compact Simulator's 1.0. Frequency also leads on ratings volume (340 vs 1) and update cadence (fortnightly vs every 2 months). Spectrum Compact Simulator's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). 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 holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Frequency has 340 ratings behind it against 1, so its average is the more settled of the two.

Spectrum Compact Simulator ships an update every 2 months, Frequency fortnightly. The most recent releases landed on September 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Spectrum Compact Simulator | Frequency |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/spectrum-compact-simulator/id910904261/reviews) | **[4.7 (340 ratings)](https://appshunter.io/ios/app/frequency-sound-generator/id6474342664/reviews)** |
| Number of ratings | 1 | **340** |
| Positive reviews | — | 72.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 8 MB |
| Requires iOS | **7.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SAF Tehnika AS](https://appshunter.io/developer/514563603) | [Lucija Jaksic](https://appshunter.io/developer/1721391925) |

## What reviewers say

### Spectrum Compact Simulator

[App page](https://appshunter.io/ios/app/spectrum-compact-simulator/id910904261)

Explore the functionality of a handheld microwave spectrum analyzer through a realistic simulation. This application demonstrates how to perform antenna alignment, troubleshooting, and maintenance with ease and speed.

**Highlights:** Simulates handheld microwave spectrum analyzer, Demonstrates real microwave radio spectrum data, Facilitates antenna alignment, Aids in troubleshooting, Supports maintenance tasks

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Spectrum Compact Simulator free?

Spectrum Compact Simulator is free to download, with no in-app purchases.

### Is Frequency free?

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

### Which has better reviews, Spectrum Compact Simulator or Frequency?

Frequency is rated higher. Spectrum Compact Simulator averages 1.0 out of 5 from 1 ratings, while Frequency averages 4.7 from 340 ratings.

### Do Spectrum Compact Simulator or Frequency have ads?

Frequency shows ads; Spectrum Compact Simulator does not.

### Which is updated more often, Spectrum Compact Simulator or Frequency?

Spectrum Compact Simulator ships an update every 2 months, and Frequency fortnightly. Most recently, Spectrum Compact Simulator was updated on September 18, 2026 and Frequency on October 14, 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.*