Comparison

heart/work vs NicoKitty

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

Head to head
About

heart/work

This app generates unique artwork based on your health data, including heart rate, steps, and environmental factors. It uses meditative breathing exercises and personal preferences to create layered visuals, offering a novel way to visualize wellbeing.

Highlights
  • Generates art from health data
  • Uses heart rate and steps
  • Incorporates environmental data
  • Meditative breathing exercises
  • Customizable art parameters
  • Integrates with HealthKit
Features
Read full description

Introducing *heart/work*, the only iOS app that generates original artwork based on your unique health information. Bridging the gap between wellbeing and health data, heart/work creates layered visuals to provide at-a-glance synopsis using meditative breathing exercises, your heartbeat and environmental data from your current surroundings.

 Maintain your exercise streaks by completing heart/work everyday and generate a new piece of art, straight from your heart. The heart/work is generated based on different attributes like: 
 - heart beat
s during exercise - HRV (heart rate variability)
 - resting heart beat
 - # of steps taken 
- distance for running / walking
 - stairs climbed 
- active energy burned
 - local weather 
& climate - location information 
- mood
 - favorite color 

Customize the number of breaths, meditation session length, and favorite color - let heart/work do the rest. heart/work is using HealthKit data to create visuals. Access to the data is required for the app to work. No personally identifiable data is ever shared with anyone. Created with love at the Apple Developer Academy in Naples, Italy.

About

NicoKitty

Features
Read full description

Winner of the Swift Student Challenge 2025 Inspired by the beloved Tamagotchis of the 90s, NicoKitty offers a unique and engaging way to help you quit smoking. Created from personal experience and a heartfelt motivation to honor a lost loved one, this app transforms your quitting journey into a meaningful and interactive experience. Take care of your virtual pixel-art cat, a reflection of your health and well-being. Every cigarette you smoke makes your cat angry and distances itself, reminding you of the consequences of your choices. The more you smoke, the angrier the cat becomes, encouraging responsibility and awareness. Key Features: - Personalized Smoking Limits: Set daily cigarette limits based on your smoking habits (-5, 5–10, +10 cigarettes), with corresponding thresholds (2, 5, or 7 cigarettes). Exceeding these limits increases your cat’s anger level. - Daily & Weekly Tracking: Monitor your cigarette intake every day and see your weekly progress at a glance. - Motivational Mini-Game: Play a fun game that increases your cat’s happiness and lowers its anger, a healthy distraction to help reduce cravings. - Home Screen Widgets: Quickly add or remove cigarettes smoked directly from your home screen and watch your cat’s mood change in real-time. - Apple Watch Support: Manage your cigarette count conveniently on your wrist without needing to open your phone. - Siri Integration: Simply say, “Hey Siri, I smoked a cigarette,” and NicoKitty automatically logs it for you… no taps, no hassle. Quit smoking not just with willpower, but with compassion and interaction. Let NicoKitty guide you on a journey of personal growth and better health.

Screenshots

heart/work4 screens
NicoKitty4 screens

Verdict

The call

The clearest difference is in-app purchases: NicoKitty at none against heart/work's 1. NicoKitty also leads on update cadence (monthly vs every 5 months). heart/work's advantage is iOS requirement (11.0 vs 17.0). On price, ads 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. heart/work sells 1 one-off in-app purchase. NicoKitty asks for nothing beyond the download.

UpkeepUpdate frequency

heart/work ships an update every 5 months, NicoKitty monthly. The most recent releases landed on June 1, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 7 level
heart/work versus NicoKitty: the parameters behind the verdict, then further details
Parameterheart/workNicoKitty
PriceFreeFree
Rating4.0 (3 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 5 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPod, Apple Watch — betteriPhone, Apple Watch
Requires iOS11.0 — better17.0
Further details — not scored
Size29 MB16 MB
Age rating4+4+
DeveloperMoritz Philip ReckeMatteo Cotena

In-app purchases

1 purchases

heart/work

One-time1
  • Unlimited Interaction$1.99
None

NicoKitty

No in-app purchases

Questions

Is heart/work free?
heart/work is free to download, with in-app purchases available.
Is NicoKitty free?
NicoKitty is free to download, with no in-app purchases.
Do heart/work or NicoKitty have ads?
Neither heart/work nor NicoKitty shows ads.
Which is updated more often, heart/work or NicoKitty?
heart/work ships an update every 5 months, and NicoKitty monthly. Most recently, heart/work was updated on June 1, 2026 and NicoKitty on September 17, 2026.

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