# Alf.io Scan vs Big Data LDN

The clearest difference is update cadence: Alf.io Scan at every 5 months against Big Data LDN's every 13 months. Alf.io Scan also leads on iOS requirement (13.0 vs 15.0). 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.

Alf.io Scan ships an update every 5 months, Big Data LDN every 13 months. The most recent releases landed on September 20, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Alf.io Scan | Big Data LDN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/alfio-scan/id1425492093/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 13 months |
| Monetization | Free | — |
| Size | 58 MB | 128 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Swicket Sagl](https://appshunter.io/developer/1425490220) | [Reed Exhibitions Ltd](https://appshunter.io/developer/540373170) |

## What reviewers say

### Alf.io Scan

[App page](https://appshunter.io/ios/app/alfio-scan/id1425492093)

This utility app facilitates event check-ins and attendee data collection for users of the alf.io platform. It allows for efficient scanning of QR codes on attendee badges, ensuring privacy and a smooth entry process for events.

**Highlights:** Event check-in, Attendee data collection, QR code scanning, Sponsor data collection, Privacy-respecting data handling, Compatible with alf.io 2.0-M4+

**In-app purchases:** none


### Big Data LDN

[App page](https://appshunter.io/ios/app/big-data-ldn/id6593660504)

**In-app purchases:** none


## Frequently asked questions

### Is Alf.io Scan free?

Alf.io Scan is free to download, with no in-app purchases.

### Is Big Data LDN free?

Big Data LDN is free to download, with no in-app purchases.

### Do Alf.io Scan or Big Data LDN have ads?

Neither Alf.io Scan nor Big Data LDN shows ads.

### Which is updated more often, Alf.io Scan or Big Data LDN?

Alf.io Scan ships an update every 5 months, and Big Data LDN every 13 months. Most recently, Alf.io Scan was updated on September 20, 2026 and Big Data LDN on September 21, 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.*