# IDFA Reader vs IDFA ATT

The clearest difference is update cadence: IDFA ATT at every 5 months against IDFA Reader's every 21 months. IDFA Reader's advantage is iOS requirement (11.0 vs 14.0). 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.

IDFA Reader ships an update every 21 months, IDFA ATT every 5 months. The most recent releases landed on September 8, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | IDFA Reader | IDFA ATT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 21 months | **Every 5 months** |
| Monetization | — | Ad-supported |
| Size | 23 MB | 4 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [矾建 孔](https://appshunter.io/developer/1481446695) | [Mehmet Bayram](https://appshunter.io/developer/1541281376) |

## What reviewers say

### IDFA Reader

[App page](https://appshunter.io/ios/app/idfa-reader/id1607539208)

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

**In-app purchases:** none


### IDFA ATT

[App page](https://appshunter.io/ios/app/idfa-att/id6451246283)

Easily access your iOS device's IDFA and IP addresses. Stay informed about App Tracking Transparency (ATT) and generate custom QR codes for your device IDFA. Quickly check your ATT consent status and navigate to tracking settings.

**Highlights:** Access iOS Device IDFA and IP addresses, View public and private IP addresses, Understand App Tracking Transparency (ATT), Generate and export custom QR codes for IDFA, Check ATT consent status, Add device to AdMob Test Devices, Learn AdMob app-ads.txt configuration

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

**In-app purchases:** none


## Frequently asked questions

### Is IDFA Reader free?

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

### Is IDFA ATT free?

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

### Do IDFA Reader or IDFA ATT have ads?

Both IDFA Reader and IDFA ATT show ads.

### Which is updated more often, IDFA Reader or IDFA ATT?

IDFA Reader ships an update every 21 months, and IDFA ATT every 5 months. Most recently, IDFA Reader was updated on September 8, 2026 and IDFA ATT on September 14, 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.*