# GN Viewer vs SoundLog

The clearest difference is in-app purchases: GN Viewer at none against SoundLog's 4. SoundLog's advantage is ads (none vs shown) and update cadence (every 4 days vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. SoundLog sells 4 in-app purchases, starting at $2.99 per month. GN Viewer asks for nothing beyond the download.

GN Viewer ships an update every 2 weeks, SoundLog every 4 days. The most recent releases landed on October 15, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | GN Viewer | SoundLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gn-viewer/id6756170503/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 44 MB | 83 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Raymond Yang](https://appshunter.io/developer/1858820577) | [Kenichi Tabata](https://appshunter.io/developer/1896292479) |

## What reviewers say

### GN Viewer

[App page](https://appshunter.io/ios/app/gn-viewer/id6756170503)

Create dynamic visual experiences by playing multiple videos, GIFs, and images simultaneously on a customizable canvas. This private, on-device media vault offers advanced slideshow features and secure storage without cloud reliance.

**Highlights:** Play multiple videos, GIFs, and images simultaneously, Resize, rotate, and arrange media freely, PIN-locked private vault for offline media storage, Save custom canvas layouts, Adjustable speed and shuffle for slideshows, Organize media with albums

**Features:** macOS Compatibility

**In-app purchases:** none


### SoundLog

[App page](https://appshunter.io/ios/app/soundlog-noise-tracker/id6766467501)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SoundLog Pro (Monthly) | $2.99 | per month |
| SoundLog Pro (Yearly) | $17.99 | per year |
| Single Report | $1.99 | one-time |
| 3-Report Pack | $2.49 | one-time |


## Frequently asked questions

### Is GN Viewer free?

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

### Is SoundLog free?

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

### Do GN Viewer or SoundLog have ads?

GN Viewer shows ads; SoundLog does not.

### Which is updated more often, GN Viewer or SoundLog?

GN Viewer ships an update every 2 weeks, and SoundLog every 4 days. Most recently, GN Viewer was updated on October 15, 2026 and SoundLog on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*