# LensFactor vs 3Display

The clearest difference is review sentiment: LensFactor at 89% against 3Display's 0%. LensFactor also leads on rating (5.0 vs 2.3) and iOS requirement (11.0 vs 15.0). 3Display's advantage is price (Free vs $1.99) and update cadence (every 4 weeks vs every 24 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

3Display is free to download; LensFactor costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LensFactor holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 89% of LensFactor's written reviews are positive against 0% of 3Display's.

LensFactor ships an update every 24 months, 3Display every 4 weeks. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | LensFactor | 3Display |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/lensfactor/id370376269/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/3display/id6443613600/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | **88.9% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 4 weeks** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 73 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bart van Stiphout](https://appshunter.io/developer/368100168) | [华胜 张](https://appshunter.io/developer/1567799066) |

## 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


### 3Display

[App page](https://appshunter.io/ios/app/3display/id6443613600)

This app allows users to create and display 3D fan art. It offers a platform for showcasing creative 3D models and designs. Explore a gallery of unique fan-made creations.

**Highlights:** 3D fan art creation, 3D model display, Showcase creative designs, Gallery of fan-made creations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LensFactor free?

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

### Is 3Display free?

3Display is free to download, with no in-app purchases.

### Which has better reviews, LensFactor or 3Display?

LensFactor is rated higher. LensFactor averages 5.0 out of 5 from 2 ratings, while 3Display averages 2.3 from 3 ratings.

### Do LensFactor or 3Display have ads?

Neither LensFactor nor 3Display shows ads.

### Which is updated more often, LensFactor or 3Display?

LensFactor ships an update every 24 months, and 3Display every 4 weeks. Most recently, LensFactor was updated on October 8, 2026 and 3Display on September 30, 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.*