Comparison

Optic Studio vs KALKUL

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

Head to head
About

Optic Studio

Features
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This is a product created to allow optician’s customers to try advantages of the proposed ophthalmic lenses during sale process, even before these lenses will be produced and sold. The principal result is to assist the customer during product choice and to offer to the professionals the best instruments to present modern optical solutions. This App is a great new instrument, very friendly to the user: with your finger touch is possible to have a visual support to explain ophthalmic lenses with a personalized realistic preview of the final result of your professional work. Your products will be sold with much more satisfaction of the customer that will be happier to come back due to the service received from you and your visual marketing support device.

About

KALKUL

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the feeling of another future [0x036] how does it feel? why are you here, why not on another path of spacetime? you are here because you are curious. you are here because you want to feel more. KALKUL is a sub-movement to explore alternate branches of technology. a KALKUL is something you can collect and experience. download the app and apply for your first KALKUL. a key to a secret space in Tokyo. another future is possible.

Screenshots

KALKUL1 screens

Verdict

The call

The clearest difference is update cadence: KALKUL at every 6 days against Optic Studio's every 2 months. Optic Studio's advantage is iOS requirement (10.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

Optic Studio ships an update every 2 months, KALKUL every 6 days. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

Scorecard2 real differences Β· 4 level
Optic Studio versus KALKUL: the parameters behind the verdict, then further details
ParameterOptic StudioKALKUL
PriceFreeFree
Update frequencyEvery 2 monthsEvery 6 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPadiPhone, iPad β€” better
Requires iOS10.0 β€” better16.0
Further details β€” not scored
Size66 MB71 MB
Age rating17+4+
DeveloperSBM SistemiKalkul Inc.

In-app purchases

None

Optic Studio

No in-app purchases

None

KALKUL

No in-app purchases

Questions

Is Optic Studio free?
Optic Studio is free to download, with no in-app purchases.
Is KALKUL free?
KALKUL is free to download, with no in-app purchases.
Do Optic Studio or KALKUL have ads?
Neither Optic Studio nor KALKUL shows ads.
Which is updated more often, Optic Studio or KALKUL?
Optic Studio ships an update every 2 months, and KALKUL every 6 days. Most recently, Optic Studio was updated on November 7, 2026 and KALKUL on November 4, 2026.

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