LensFactor vs Tricity
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LensFactor
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.
- 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
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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
Tricity
Create professional electrical schemas and floor plans quickly and easily. Generate situation sketches, wire diagrams, and support for home automation, solar panels, and charging stations. Includes AREI 2023 compliance checks.
- Create floor plans from scratch or existing images
- Add electrical components and fuse box layouts
- Generate situation sketches and wire diagrams
- Support for home automation, solar panels, and charging stations
- AREI 2023 compliance checks
- Diagrams for official inspections in Belgium and Netherlands
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Has your electricity been rejected due to a missing situation sketch or floor plan? Or have you renovated your house and do you still have to draw up schemas? Don't worry: now you can make this quick and easy on your iPac! Fantastic right? Are you a professional electrician? Tricity is also the ideal tool to generate schemas for you! How? You can very quickly create a floor plan in Tricity (or start from an existing floor plan in JPG or PDF). After this you add the electrical components in the correct place (sockets, switches, lighting), after which you enter the layout of the fuse box. Finally, indicate which components are located behind which fuse and you're done. With 1 push of a button, Tricity generates the situation sketches (for all floors!) as well as the wire diagrams (for 1 or more fuse boxes). Tricity also generates diagrams for home automation installations (Niko Home Control, Bticino MyHome, KNX, ..) and allows you to add additional information to the diagrams (addressing metadata, ..). Tricity also generates diagrams for solar panel installations and allows additional information (brand of solar panel, inverter, battery, ...) to be added to the diagrams. Support for diagrams and inspections of charging stations is also provided (as well as additional information about type, etc.). Tricity is compatible with AREI 2026 (latest version). Tricity checks for AREI violations (e.g. a socket connected to 1.5mm2 cabling) and displays warnings. The diagrams can be used for official electricity inspections in Belgium and the Netherland. Terms of use: https://www.tricity.be/terms
Screenshots
Verdict
The clearest difference is price: LensFactor at $1.99 against Tricity's $89.99. LensFactor also leads on rating (5.0 vs 4.0) and in-app purchases (none vs 4). Tricity's advantage is update cadence (every 4 weeks vs every 24 months). On ratings volume, ads and device support 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
LensFactor costs $1.99 and Tricity $89.99 up front. Tricity sells 4 in-app purchases, starting at $2.49 per 7 days. LensFactor asks for nothing beyond the download.
LensFactor holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 89% of LensFactor's written reviews are positive against 63% of Tricity's.
LensFactor ships an update every 24 months, Tricity every 4 weeks. The most recent releases landed on September 21, 2026 and August 7, 2026 respectively.
| Parameter | LensFactor | Tricity |
|---|---|---|
| Price | $1.99 — better | $89.99 |
| Rating | 5.0 (2 ratings) — better | 4.0 (2 ratings) |
| Positive reviews | 88.9% of reviews — better | 62.8% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 24 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid — better | Subscription |
| Devices | iPhone, iPad, iPod — better | iPad, Mac |
| Requires iOS | 11.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 1 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Bart van Stiphout | Netwalk |
Customer experience
LensFactor
Tricity
In-app purchases
LensFactor
No in-app purchases
Tricity
- Weekly$2.497 Days
- Monthly subscription7 Days trial$9.491 Month
- Annual subscription1 Month trial$90.991 Year
- Extra Project$8.99









