# Frequency Generator vs ECCJアプリ

The clearest difference is in-app purchases: ECCJアプリ at none against Frequency Generator's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Frequency Generator sells 2 in-app purchases, starting at $4.99 per 7 days. ECCJアプリ asks for nothing beyond the download.

Frequency Generator ships an update monthly, ECCJアプリ every 2 weeks. The most recent releases landed on September 24, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Frequency Generator | ECCJアプリ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/frequency-generator/id6468866671/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Freemium | — |
| Size | 21 MB | 30 MB |
| Requires iOS | 18.3 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Manfred Kuegel](https://appshunter.io/developer/1520736594) | [Edgar Cayce Center in Japan](https://appshunter.io/developer/1789301093) |

## What reviewers say

### Frequency Generator

[App page](https://appshunter.io/ios/app/frequency-generator/id6468866671)

Generate precise audio tones for sleep, focus, and relaxation. Explore a wide frequency range, shape waveforms, and access presets like Solfeggio frequencies. An optional Pro upgrade unlocks all features.

**Highlights:** Wide frequency range (1 Hz - 22,000 Hz), Multiple waveforms (sine, square, sawtooth, triangle), Background audio playback, Solfeggio frequencies and musical notes, Binaural beats and isochronic tones, Saved and pinned tone presets, Lock-screen and Control Center controls

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Yearly | $29.99 | per year |


### ECCJアプリ

[App page](https://appshunter.io/ios/app/eccj/id6758862772)

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

**In-app purchases:** none


## Frequently asked questions

### Is Frequency Generator free?

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

### Is ECCJアプリ free?

ECCJアプリ is free to download, with no in-app purchases.

### Do Frequency Generator or ECCJアプリ have ads?

Neither Frequency Generator nor ECCJアプリ shows ads.

### Which is updated more often, Frequency Generator or ECCJアプリ?

Frequency Generator ships an update monthly, and ECCJアプリ every 2 weeks. Most recently, Frequency Generator was updated on September 24, 2026 and ECCJアプリ on September 9, 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.*