Comparison

Master Kit vs Purr

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

Head to head
About

Master Kit

This app offers psychological self-help across relationships, career, health, and self-esteem. It utilizes guided meditations with voice-overs and videos, featuring unique computer-generated audios tailored to each individual. All sessions are confidential and private.

Highlights
  • Psychological self-help
  • Guided meditations
  • Custom audio generation
  • Relationship support
  • Career development
  • Health and self-esteem tools
Features
Read full description

Master Kit is a platform for psychological self-help in all spheres of life: in relationship, career, health, self-esteem. Master Kit App is a new kind of meditation using guided voice-over and videos on our own custom software. The main self-help tools is a unique computer-generated audios made specifically for each individual using our own automated software. Completely confidential and private.

About

Purr

Discover and map neighborhood cats with detailed profiles and animations. Help reunite lost cats with their owners and connect with other cat lovers. Features include personalized cat pages, meal logging, and a system for reporting cats in need.

Highlights
  • Neighborhood cat mapping
  • Detailed cat profiles
  • Lost cat reunion engine
  • Interactive cat animations
  • Meal and water logging
  • Report cats in need
  • XP and badge system
Features
Read full description

Walk around. Spot a cat. Drop a pin. That's the whole app — and somewhere out there, someone is very glad you did. Purr is the neighborhood cat map: every bodega cat, porch loafer, and alley phantom near you, pinned by neighbors. no trackers, ever. THE MAP • Every cat is hand-drawn from its description — coat, pattern, temperament — so pins are recognizable even without a photo. Shy cats squint. Velcro cats beam. • Pin your spot with one tap, press-and-hold the map, or slide a precision reticle to the exact curb. • Snap a photo and Purr reads the coat right off it. Share the cat with everyone, or keep a pin just for yourself. LOST CAT? PURR IS A REUNION ENGINE • Post a poster and every new sighting nearby is matched against your cat's coat, markings, and photo — leads scored and ranked, right on the poster. • Share the classic LOST CAT flyer to Instagram or Nextdoor in one tap. • Neighbors tap "I've Seen This Cat" and the sighting comes pre-filled. • When they're home, one button takes the poster down. That button is why Purr exists. CATS THAT FEEL ALIVE • Full-body cats that blink, breathe, and sway their tails — each on their own rhythm. • Every cat's page is a little world: the setting comes from where they were spotted, the sky from the hour, the weather from today's actual forecast. • Night Prowl: a dark mode for the hours cats actually keep, where pins glow like eyes catching a streetlight. A NEIGHBORHOOD, NOT A FEED • Rate any cat's friendliness in paws. Under 2.0 earns the official ruling: "Why friend shape, if not friend?" • Follow your favorites — walk near their spot and your phone taps you on the shoulder. • "Was he fed today?" answered at a glance. Log meals and water so the whole block knows dinner's handled. • Cats marked as needing help get a one-tap case card to send to local rescues. • Earn XP and badges — from First Contact to Guardian Angel — and collect trading cards. Local legends get the foil edition. PRIVATE BY DESIGN • Pins carry no names — nothing on the map identifies you. • Collared cats get their public location blurred to a city block, so nobody can map a cat's doorstep. • Photos are stripped of location data before upload. Report and block tools on every pin. Delete your account and every trace, any time, in-app. Purr is free. If it makes your walks better, there's a tip jar — the cats accept tribute but never require it. Starting in the USA. Be kind to the cats: don't chase, ask before feeding, and leave collared cats be.

Screenshots

Master Kit4 screens
Purr4 screens

Verdict

The call

The clearest difference is rating: Purr at 5.0 against Master Kit's 4.4. Purr also leads on ads (none vs shown) and update cadence (every 5 days vs every 2 months). Master Kit's advantage is in-app purchases (none vs 3) and ratings volume (54 vs 1). On price 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. Purr sells 3 one-off in-app purchases. Master Kit asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Purr holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Master Kit has 54 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Master Kit ships an update every 2 months, Purr every 5 days. The most recent releases landed on November 3, 2026 and November 2, 2026 respectively.

Scorecard7 real differences · 3 level
Master Kit versus Purr: the parameters behind the verdict, then further details
ParameterMaster KitPurr
PriceFreeFree
Rating4.4 (54 ratings)5.0 (1 ratings) — better
Positive reviews70.8% of reviews—
Number of ratings54 — better1
Update frequencyEvery 2 monthsEvery 5 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supportedFree — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS10.0 — better17.0
Further details — not scored
Size66 MB3 MB
Age rating17+4+
DeveloperMASTER KIT, OOOHessam Zahedi

Customer experience

Master Kit

All ratings54 ratings
Positive85.2%
Neutral1.9%
Negative13.0%
Written reviews72 reviews
Positive70.8%
Neutral5.6%
Negative23.6%

Purr

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Master Kit

No in-app purchases

3 purchases

Purr

One-time3
  • Treat$0.99
  • Can of Tuna$2.99
  • Lifetime Supply of Biscuits$9.99

Questions

Is Master Kit free?
Master Kit is free to download, with no in-app purchases.
Is Purr free?
Purr is free to download, with in-app purchases available.
Which has better reviews, Master Kit or Purr?
Purr is rated higher. Master Kit averages 4.4 out of 5 from 54 ratings, while Purr averages 5.0 from 1 ratings.
Do Master Kit or Purr have ads?
Master Kit shows ads; Purr does not.
Which is updated more often, Master Kit or Purr?
Master Kit ships an update every 2 months, and Purr every 5 days. Most recently, Master Kit was updated on November 3, 2026 and Purr on November 2, 2026.

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