# CertiEye vs Sigeda Diffuser

CertiEye and Sigeda Diffuser are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CertiEye ships an update every 2 weeks, Sigeda Diffuser weekly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | CertiEye | Sigeda Diffuser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (12 ratings)](https://appshunter.io/ios/app/certieye/id530413073/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 74 MB | 28 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Infotoo International Limited](https://appshunter.io/developer/478230451) | [鸿燕 张](https://appshunter.io/developer/1820313433) |

## What reviewers say

### CertiEye

[App page](https://appshunter.io/ios/app/certieye/id530413073)

Instantly authenticate products and retrieve detailed information using your smartphone. Scan images to become a security expert and access product details, offers, and vouchers.

**Highlights:** Instant product authentication, Scan images for product/offer info, Retrieve product details (text, photo, video), Snap history log, Multi-language support, Receive brand offers and vouchers, Scan Super QR codes

**In-app purchases:** none


### Sigeda Diffuser

[App page](https://appshunter.io/ios/app/sigeda-diffuser/id6775374601)

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

**In-app purchases:** none


## Frequently asked questions

### Is CertiEye free?

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

### Is Sigeda Diffuser free?

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

### Do CertiEye or Sigeda Diffuser have ads?

Neither CertiEye nor Sigeda Diffuser shows ads.

### Which is updated more often, CertiEye or Sigeda Diffuser?

CertiEye ships an update every 2 weeks, and Sigeda Diffuser weekly. Most recently, CertiEye was updated on October 6, 2026 and Sigeda Diffuser on October 1, 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.*