# IDFA Viewer vs Subnet Calculator

The clearest difference is ads: IDFA Viewer at none against Subnet Calculator's shown. Subnet Calculator's advantage is update cadence (daily vs every 9 months) and iOS requirement (13.0 vs 15.6). 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.

IDFA Viewer ships an update every 9 months, Subnet Calculator daily. Both last shipped on October 25, 2026.

## The numbers

| Metric | IDFA Viewer | Subnet Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Daily** |
| Size | 5 MB | 24 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [翠芬 梁](https://appshunter.io/developer/1792659056) | [Chun Yu Leung](https://appshunter.io/developer/1703764941) |

## What reviewers say

### IDFA Viewer

[App page](https://appshunter.io/ios/app/idfa-viewer-device-info-viewer/id6748586602)

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

**In-app purchases:** none


### Subnet Calculator

[App page](https://appshunter.io/ios/app/subnet-calculator/id6760517117)

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

**In-app purchases:** none


## Frequently asked questions

### Is IDFA Viewer free?

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

### Is Subnet Calculator free?

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

### Do IDFA Viewer or Subnet Calculator have ads?

Subnet Calculator shows ads; IDFA Viewer does not.

### Which is updated more often, IDFA Viewer or Subnet Calculator?

IDFA Viewer ships an update every 9 months, and Subnet Calculator daily. Most recently, IDFA Viewer was updated on October 25, 2026 and Subnet Calculator on October 25, 2026.

---

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