# Contractors @ SG vs Zbtlink

The clearest difference is ads: Zbtlink at none against Contractors @ SG's shown. Zbtlink also leads on iOS requirement (9.0 vs 12.0). Contractors @ SG's advantage is update cadence (every 5 weeks vs every 7 months). On price, 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.

Contractors @ SG ships an update every 5 weeks, Zbtlink every 7 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Contractors @ SG | Zbtlink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 7 months |
| Size | 42 MB | 28 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Novanet Solutions](https://appshunter.io/developer/1482778283) | [深圳智博通电子有限公司](https://appshunter.io/developer/1543347997) |

## What reviewers say

### Contractors @ SG

[App page](https://appshunter.io/ios/app/contractors-sg/id1532876460)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zbtlink

[App page](https://appshunter.io/ios/app/zbtlink-ac/id1562087182)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Contractors @ SG free?

Contractors @ SG is free to download, with no in-app purchases.

### Is Zbtlink free?

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

### Do Contractors @ SG or Zbtlink have ads?

Contractors @ SG shows ads; Zbtlink does not.

### Which is updated more often, Contractors @ SG or Zbtlink?

Contractors @ SG ships an update every 5 weeks, and Zbtlink every 7 months. Most recently, Contractors @ SG was updated on October 29, 2026 and Zbtlink 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.*