Apps by Bart van Stiphout
LensFactor app icon

Productivity

LensFactor

Bart van Stiphout

$1.99 5.00 · 1 storefront · 2 ratings In-app purchases unconfirmed
Open on Apple

About this app

LensFactor is an application for the iPhone OS which has 3 basic functions: - Calculate the lens factor when the screen size and projector distance is known - Calculate the screen size when the lens factor(s) and projector distance is known - Calculate the projector distance when the lens factor(s) and screen size is known

Latest release

What’s New

Version 1.50 Feb 11, 2020

- Improved Dark Theme - Minor bugfixes

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
2 ratings
2 Aug 19, 2026 · 2 ratings Aug 19, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current $1.99
Historical low USD 1.99
Paid → free
Price history
Current $1.99
$1.99 $1.00 Free Aug 19, 2026 · $1.99 Aug 19, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Aug 19, 2026 · 11:13 AM $1.99

Screenshots

LensFactor iPhone screenshotLensFactor iPhone screenshotLensFactor iPhone screenshot LensFactor iPad screenshotLensFactor iPad screenshotLensFactor iPad screenshot