# LensFactor vs iBouw

The clearest difference is price: iBouw at Free against LensFactor's $1.99. iBouw also leads on update cadence (every 3 months vs every 24 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

iBouw is free to download; LensFactor costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LensFactor ships an update every 24 months, iBouw every 3 months. The most recent releases landed on September 21, 2026 and July 7, 2026 respectively.

## The numbers

| Metric | LensFactor | iBouw |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/lensfactor/id370376269/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 1 MB | 25 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bart van Stiphout](https://appshunter.io/developer/368100168) | [CODROX SPRL](https://appshunter.io/developer/1373347487) |

## What reviewers say

### LensFactor

[App page](https://appshunter.io/ios/app/lensfactor/id370376269)

This app helps calculate lens factors, screen sizes, and projector distances based on known variables. It's a utility for professionals or enthusiasts needing precise measurements for display setups.

**Highlights:** Calculate lens factor, Calculate screen size, Calculate projector distance, Input screen size and projector distance, Input lens factor and projector distance, Input lens factor and screen size

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

**In-app purchases:** none


### iBouw

[App page](https://appshunter.io/ios/app/ibouw/id1373347488)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LensFactor free?

LensFactor costs $1.99, with no in-app purchases.

### Is iBouw free?

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

### Do LensFactor or iBouw have ads?

Neither LensFactor nor iBouw shows ads.

### Which is updated more often, LensFactor or iBouw?

LensFactor ships an update every 24 months, and iBouw every 3 months. Most recently, LensFactor was updated on September 21, 2026 and iBouw on July 7, 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.*