# LensPro vs Happly Event

The clearest difference is price: Happly Event at Free against LensPro's $5.99. Happly Event also leads on update cadence (every 2 weeks vs every 16 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Happly Event is free to download; LensPro costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LensPro ships an update every 16 months, Happly Event every 2 weeks. Both last shipped on September 18, 2026.

## The numbers

| Metric | LensPro | Happly Event |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.4 (21 ratings)](https://appshunter.io/ios/app/lenspro/id391291572/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 109 MB | 26 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [piXap](https://appshunter.io/developer/386140014) | [GENERATIONS EVENEMENT](https://appshunter.io/developer/1210093336) |

## What reviewers say

### LensPro

[App page](https://appshunter.io/ios/app/lenspro/id391291572)

This utility app assists projectionists with lens calculations for various projector brands. It maintains an updated database of lens information accessible via the internet.

**Highlights:** Lens calculations, Supports Barco, Christie, Panasonic, Epson, Benq, Mitsubishi, Optoma, Sony, Online database updates, Ideal for projectionists

**Features:** Vision Pro support

**In-app purchases:** none


### Happly Event

[App page](https://appshunter.io/ios/app/happly-event/id1210093337)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LensPro free?

LensPro costs $5.99, with no in-app purchases.

### Is Happly Event free?

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

### Do LensPro or Happly Event have ads?

Neither LensPro nor Happly Event shows ads.

### Which is updated more often, LensPro or Happly Event?

LensPro ships an update every 16 months, and Happly Event every 2 weeks. Most recently, LensPro was updated on September 18, 2026 and Happly Event on September 18, 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.*