# ゆらぎ時計 1/f vs Audio SA

The clearest difference is in-app purchases: ゆらぎ時計 1/f at none against Audio SA's 1. ゆらぎ時計 1/f also leads on update cadence (every 2 months vs every 6 months) and iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Audio SA sells 1 one-off in-app purchase. ゆらぎ時計 1/f asks for nothing beyond the download.

ゆらぎ時計 1/f ships an update every 2 months, Audio SA every 6 months. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ゆらぎ時計 1/f | Audio SA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 15 MB | 5 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [takayuki atsumi](https://appshunter.io/developer/1495474977) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### ゆらぎ時計 1/f

[App page](https://appshunter.io/ios/app/1f-yuragi-clock/id1537216400)

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

**In-app purchases:** none


### Audio SA

[App page](https://appshunter.io/ios/app/audio-sa/id6444715596)

This app analyzes audio waveforms to create visual voiceprints as TFFT images. It offers extensive customization for FFT analysis, including adjustable ranges, sizes, scales, and window functions. A simple waveform generator is also included for learning purposes.

**Highlights:** TFFT voiceprint image generation, High-resolution image export, Customizable FFT analysis settings, Adjustable audio waveform analysis range, Simple waveform generator (sine, square, noise), Multiple FFT sizes and window functions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads. | $3.99 | one-time |


## Frequently asked questions

### Is ゆらぎ時計 1/f free?

ゆらぎ時計 1/f is free to download, with no in-app purchases.

### Is Audio SA free?

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

### Do ゆらぎ時計 1/f or Audio SA have ads?

Both ゆらぎ時計 1/f and Audio SA show ads.

### Which is updated more often, ゆらぎ時計 1/f or Audio SA?

ゆらぎ時計 1/f ships an update every 2 months, and Audio SA every 6 months. Most recently, ゆらぎ時計 1/f was updated on October 11, 2026 and Audio SA 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.*