# Reply Events vs Big Data LDN

The clearest difference is update cadence: Reply Events at every 5 months against Big Data LDN's every 13 months. Big Data LDN's advantage is iOS requirement (15.0 vs 17.6). 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.

Reply Events ships an update every 5 months, Big Data LDN every 13 months. The most recent releases landed on September 3, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Reply Events | Big Data LDN |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 13 months |
| Monetization | Free | — |
| Size | 17 MB | 128 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Reply SpA](https://appshunter.io/developer/438883833) | [Reed Exhibitions Ltd](https://appshunter.io/developer/540373170) |

## What reviewers say

### Reply Events

[App page](https://appshunter.io/ios/app/reply-events/id1464477229)

This app enhances your experience at corporate events by providing schedules, venue details, and real-time updates. Connect with other attendees and organizers to stay informed and engaged throughout the event.

**Highlights:** Event schedules, Venue information, Hotel details, Shuttle services, Real-time updates, Attendee networking

**Features:** Vision Pro support

**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 Reply Events free?

Reply Events 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 Reply Events or Big Data LDN have ads?

Neither Reply Events nor Big Data LDN shows ads.

### Which is updated more often, Reply Events or Big Data LDN?

Reply Events ships an update every 5 months, and Big Data LDN every 13 months. Most recently, Reply Events was updated on September 3, 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.*