# SG Approval Hub vs Zalk

The clearest difference is update cadence: SG Approval Hub at every 8 days against Zalk's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SG Approval Hub ships an update every 8 days, Zalk every 5 months. Both last shipped on October 28, 2026.

## The numbers

| Metric | SG Approval Hub | Zalk |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 5 months |
| Size | 73 MB | 23 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Qatar Medical Center](https://appshunter.io/developer/1742555467) | [Octopi Health](https://appshunter.io/developer/1846326832) |

## What reviewers say

### SG Approval Hub

[App page](https://appshunter.io/ios/app/sg-approval-hub/id6739069211)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zalk

[App page](https://appshunter.io/ios/app/zalk/id6756005678)

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

**In-app purchases:** none


## Frequently asked questions

### Is SG Approval Hub free?

SG Approval Hub is free to download, with no in-app purchases.

### Is Zalk free?

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

### Do SG Approval Hub or Zalk have ads?

Neither SG Approval Hub nor Zalk shows ads.

### Which is updated more often, SG Approval Hub or Zalk?

SG Approval Hub ships an update every 8 days, and Zalk every 5 months. Most recently, SG Approval Hub was updated on October 28, 2026 and Zalk on October 28, 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.*