Comparison

Lensit vs Flicker Fusion

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Lens Calculator

About

Lensit

Features

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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.

About

Flicker Fusion

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The Flicker Fusion administration application works in conjunction with the Lafayette Instrument Flicker Fusion system. The app allows an administrator to create/control a Critical Flicker Frequency (CFF) exam as well as store the results by examinee. The Flicker Fusion is for use in education and research and is not intended for medical or diagnostic purposes.

Screenshots

Lensit1 screens

Flicker Fusion4 screens

Verdict

The call

The clearest difference is update cadence: Lensit at every 3 weeks against Flicker Fusion's every 4 months. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Lensit ships an update every 3 weeks, Flicker Fusion every 4 months. The most recent releases landed on October 18, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 5 level

Lensit versus Flicker Fusion: the parameters behind the verdict, then further details
Parameter	Lensit	Flicker Fusion
Price	Free	Free
Update frequency	Every 3 weeks — better	Every 4 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad	iPhone, iPad, iPod — better
Requires iOS	16.4	15.0 — better
Further details — not scored
Size	49 MB	18 MB
Age rating	4+	4+
Developer	lior cohen	Lafayette Instrument Company, Inc.

In-app purchases

None

Lensit

No in-app purchases

None

Flicker Fusion

No in-app purchases

Questions

Is Lensit free?

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

Is Flicker Fusion free?

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

Do Lensit or Flicker Fusion have ads?

Neither Lensit nor Flicker Fusion shows ads.

Which is updated more often, Lensit or Flicker Fusion?

Lensit ships an update every 3 weeks, and Flicker Fusion every 4 months. Most recently, Lensit was updated on October 18, 2026 and Flicker Fusion on October 4, 2026.