Comparison

Kerk vs Perf AI

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

Head to head
About

Kerk

Features
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Turn your smartphone or tablet into the ultimate interface to controls your home and office. Focused on simplicity and design this app focus in improving your lifestyle on a daily basis. Kerk Solutions offers the perfect solutions for remote acess, lighting controls, blinds controls, home theater and multi room audio, and much more. Explore our universe. ---- PLEASE NOTE: Prior to using this app, you need a Kerk Solutions system running at your home or business. ----

About

Perf AI

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HOW TO USE PERF AI: Point your camera at any perfume bottle and know exactly what's inside it. Perf AI reads the bottle and gives you a complete scent breakdown in seconds โ€” the notes, the main accords, how long it lasts, how far it projects, and the situations it was made for. No more guessing in the store. No more buying blind. WHAT YOU GET FROM EVERY SCAN: - Full note pyramid โ€” top, heart and base notes, laid out clearly - Main accords โ€” the dominant character of the scent, ranked by strength - Performance โ€” longevity and sillage, so you know what to expect on skin - Season guide โ€” how it performs in summer, winter, spring and autumn - Day or night โ€” where the fragrance actually belongs - A clear written description of the scent, written to be read, not decoded BUILT FOR REAL MOMENTS You're standing in a duty-free aisle with fifteen bottles in front of you. A friend is wearing something incredible and you want to know what it is. You found an old bottle at home and never knew what was in it. You're deciding whether the bottle you own is right for a summer wedding or a winter dinner. Perf AI answers all of it from one photo. WHY PEOPLE USE IT: FIND YOUR SIGNATURE SCENT Understand which accords keep showing up in the fragrances you love โ€” woody, amber, fresh, sweet, floral, spicy โ€” and use that to choose your next bottle with confidence. STOP WASTING MONEY Longevity and sillage are the two things product pages never tell you honestly. See them before you buy. LEARN THE LANGUAGE OF FRAGRANCE Notes, accords, sillage, projection, olfactive families โ€” Perf AI explains a perfume the way an experienced enthusiast would, in plain words. DESIGNER AND NICHE From everyday designer bottles to rare niche houses, scan it and get the same depth of detail. FAST AND SIMPLE Open the camera. Point. Done. No long forms, no sign-up walls, no scrolling through endless lists to find one perfume. Whether you're just starting to explore fragrance or you already have a shelf full of bottles, Perf AI turns every bottle into something you actually understand. Download Perf AI and scan your first perfume now. If you have any ideas or questions, please email us at team@perf-ai.app Terms of Use (EULA): https://www.perf-ai.app/terms-of-use Privacy Policy: https://www.perf-ai.app/privacy

Screenshots

Kerk4 screens
Perf AI4 screens

Verdict

The call

The clearest difference is in-app purchases: Kerk at none against Perf AI's 2. Kerk also leads on device support (3 vs 1) and iOS requirement (5.1.1 vs 16.4). Perf AI's advantage is update cadence (every 2 months vs every 10 months). On price and ads there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Perf AI sells 2 in-app purchases, starting at $7.99 per 7 days. Kerk asks for nothing beyond the download.

UpkeepUpdate frequency

Kerk ships an update every 10 months, Perf AI every 2 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard4 real differences ยท 2 level
Kerk versus Perf AI: the parameters behind the verdict, then further details
ParameterKerkPerf AI
PriceFreeFree
Update frequencyEvery 10 monthsEvery 2 months โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS5.1.1 โ€” better16.4
Further details โ€” not scored
Size75 MB62 MB
Age rating4+4+
DeveloperKerk ComercialFeras Alshibli

In-app purchases

None

Kerk

No in-app purchases

2 purchases

Perf AI

Subscriptions2
  • Weekly Premium Access3 Days trial$7.997 Days
  • Yearly Premium Access$49.991 Year

Questions

Is Kerk free?
Kerk is free to download, with no in-app purchases.
Is Perf AI free?
Perf AI is free to download, with in-app purchases available.
Do Kerk or Perf AI have ads?
Neither Kerk nor Perf AI shows ads.
Which is updated more often, Kerk or Perf AI?
Kerk ships an update every 10 months, and Perf AI every 2 months. Most recently, Kerk was updated on November 1, 2026 and Perf AI on October 30, 2026.

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