# WiDrawer2 vs Audio SA

The clearest difference is review sentiment: Audio SA at 100% against WiDrawer2's 12%. WiDrawer2's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Audio SA sells 1 one-off in-app purchase. WiDrawer2 asks for nothing beyond the download.

WiDrawer2 ships an update every 3 months, Audio SA every 6 months. The most recent releases landed on September 21, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | WiDrawer2 | Audio SA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 12.1% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 52 MB | 5 MB |
| Requires iOS | **7.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RATOC Systems, Inc.](https://appshunter.io/developer/568725272) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### WiDrawer2

[App page](https://appshunter.io/ios/app/widrawer2/id955370800)

Access and manage files on SD cards and USB flash drives wirelessly from your iOS device. Browse, copy, delete, and stream media content directly from your storage devices. Supports various file types and offers convenient features like slideshows and batch copying.

**Highlights:** Wireless file access, Browse, copy, and delete files, Create and manage folders, Thumbnail display for images, Stream music and videos, Photo slideshows, File search functionality, Batch copy to camera roll

**Features:** macOS Compatibility

**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 WiDrawer2 free?

WiDrawer2 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 WiDrawer2 or Audio SA have ads?

Audio SA shows ads; WiDrawer2 does not.

### Which is updated more often, WiDrawer2 or Audio SA?

WiDrawer2 ships an update every 3 months, and Audio SA every 6 months. Most recently, WiDrawer2 was updated on September 21, 2026 and Audio SA on September 11, 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.*