Lensit vs ND Filter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lensit
This utility app helps users calculate the correct projection lens or distance for video projection events. It supports different aspect ratios and unit systems, with pro features for saving unlimited events.
- Calculate lens factor by size/distance
- Calculate distance by size/lens factor
- Support for 4:3 and 16:9 aspect ratios
- Metric and imperial unit support
- Unit conversion
- Save unlimited events (Pro feature)
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Get the exact lens and throw distance for your next projection setup — instantly. Lensit does the projection math for you: • Enter your screen size and distance to find the right lens • Or enter your lens spec to find the ideal distance • Switch between 4:3 and 16:9 aspect ratio • Works in metric or imperial — or use it to convert between them Built for AV techs, event producers, and anyone setting up a projector who doesn't want to do the math by hand. Pro adds: • Save unlimited events and pull them back up anytime
ND Filter
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Calculate the optimal exposure time for your photograph. Simply specify the filters you want to use and the exposure time of the camera and ND filter calculates the optimum time span, for your photographs to become awesome. Core features: - Add your own custom filters - Select one or multiple filters - Built-in timer / alarm with optional vibration and sound - Easy to use, simple layout
Screenshots
Verdict
The clearest difference is price: ND Filter at Free against Lensit's $3.99. Lensit's advantage is update cadence (fortnightly vs every 5 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
ND Filter is free to download; Lensit costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Lensit ships an update fortnightly, ND Filter every 5 months. The most recent releases landed on September 8, 2026 and September 13, 2026 respectively.
| Parameter | Lensit | ND Filter |
|---|---|---|
| Price | $3.99 | Free — better |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Fortnightly — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 17.2 |
| Further details — not scored | ||
| Size | 49 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | lior cohen | Cubeon Solutions UG |
In-app purchases
Lensit
No in-app purchases
ND Filter
No in-app purchases
