# Zn vs FG glassPRO

Zn and FG glassPRO 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. Neither carries in-app purchases, so what you see is what you pay.

Zn ships an update every 5 months, FG glassPRO every 9 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Zn | FG glassPRO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 9 months |
| Size | 33 MB | 50 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [i-Sprint Innovations Pte Ltd](https://appshunter.io/developer/530059572) | [FG Glass](https://appshunter.io/developer/1665823612) |

## What reviewers say

### Zn

[App page](https://appshunter.io/ios/app/zn/id1395013401)

**In-app purchases:** none


### FG glassPRO

[App page](https://appshunter.io/ios/app/fg-glasspro/id1665823610)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zn free?

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

### Is FG glassPRO free?

FG glassPRO is free to download, with no in-app purchases.

### Do Zn or FG glassPRO have ads?

Neither Zn nor FG glassPRO shows ads.

### Which is updated more often, Zn or FG glassPRO?

Zn ships an update every 5 months, and FG glassPRO every 9 months. Most recently, Zn was updated on October 26, 2026 and FG glassPRO on October 27, 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.*