# Frequency Generator vs FlashSOS Emergency Flashlight

Frequency Generator and FlashSOS Emergency Flashlight are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Frequency Generator sells 2 in-app purchases, starting at $4.99 per 7 days and FlashSOS Emergency Flashlight sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Frequency Generator ships an update every 4 weeks, FlashSOS Emergency Flashlight every 3 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Frequency Generator | FlashSOS Emergency Flashlight |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (22 ratings)](https://appshunter.io/ios/app/frequency-generator-hz-tones/id6468866671/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | Freemium | — |
| Size | 33 MB | 2 MB |
| Requires iOS | 18.3 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Moonbush Games & Utilities App GmbH](https://appshunter.io/developer/1520736594) | [晓强 江](https://appshunter.io/developer/6775869180) |

## What reviewers say

### Frequency Generator

[App page](https://appshunter.io/ios/app/frequency-generator-hz-tones/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 |


### FlashSOS Emergency Flashlight

[App page](https://appshunter.io/ios/app/flashsos-emergency-flashlight/id6788298765)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FlashSOS Pro (Morse + Beat Forever) | $1.99 | one-time |


## Frequently asked questions

### Is Frequency Generator free?

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

### Is FlashSOS Emergency Flashlight free?

FlashSOS Emergency Flashlight is free to download, with in-app purchases available.

### Do Frequency Generator or FlashSOS Emergency Flashlight have ads?

Neither Frequency Generator nor FlashSOS Emergency Flashlight shows ads.

### Which is updated more often, Frequency Generator or FlashSOS Emergency Flashlight?

Frequency Generator ships an update every 4 weeks, and FlashSOS Emergency Flashlight every 3 weeks. Most recently, Frequency Generator was updated on October 27, 2026 and FlashSOS Emergency Flashlight on October 25, 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.*