# HCC2D Decoder vs DNS Checker/Whois & IP Lookup

The clearest difference is update cadence: HCC2D Decoder at every 2 weeks against DNS Checker/Whois & IP Lookup's every 6 weeks. DNS Checker/Whois & IP Lookup's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

HCC2D Decoder ships an update every 2 weeks, DNS Checker/Whois & IP Lookup every 6 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | HCC2D Decoder | DNS Checker/Whois & IP Lookup |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/hcc2d-decoder/id6762202762/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 8 MB | 36 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marco Querini](https://appshunter.io/developer/1893348109) | [Yuan-Yi Chang](https://appshunter.io/developer/784363421) |

## What reviewers say

### HCC2D Decoder

[App page](https://appshunter.io/ios/app/hcc2d-decoder/id6762202762)

Scan and decode advanced HCC2D color codes and standard QR codes using your device's camera. This app offers real-time scanning with robust error correction and is based on cutting-edge barcode research.

**Highlights:** Decode HCC2D color codes, Full QR code support, Real-time camera scanning, Robust detection and error correction, No ads or registration

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

**In-app purchases:** none


### DNS Checker/Whois & IP Lookup

[App page](https://appshunter.io/ios/app/dns-checkerwhois-and-ip-lookup/id6772759469)

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

**In-app purchases:** none


## Frequently asked questions

### Is HCC2D Decoder free?

HCC2D Decoder is free to download, with no in-app purchases.

### Is DNS Checker/Whois & IP Lookup free?

DNS Checker/Whois & IP Lookup is free to download, with no in-app purchases.

### Do HCC2D Decoder or DNS Checker/Whois & IP Lookup have ads?

Neither HCC2D Decoder nor DNS Checker/Whois & IP Lookup shows ads.

### Which is updated more often, HCC2D Decoder or DNS Checker/Whois & IP Lookup?

HCC2D Decoder ships an update every 2 weeks, and DNS Checker/Whois & IP Lookup every 6 weeks. Most recently, HCC2D Decoder was updated on October 31, 2026 and DNS Checker/Whois & IP Lookup on November 5, 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.*