Master Kit vs Purr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Psychological self-help
- Guided meditations
- Custom audio generation
- Relationship support
- Career development
- Health and self-esteem tools
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Purr sells 3 one-off in-app purchases. Master Kit asks for nothing beyond the download.
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.
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.
| Parameter | Master Kit | Purr |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (54 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 70.8% of reviews | — |
| Number of ratings | 54 — better | 1 |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 66 MB | 3 MB |
| Age rating | 17+ | 4+ |
| Developer | MASTER KIT, OOO | Hessam Zahedi |
Customer experience
Master Kit
Purr
In-app purchases
Master Kit
No in-app purchases
Purr
- Treat$0.99
- Can of Tuna$2.99
- Lifetime Supply of Biscuits$9.99









