Pet vs chrtz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pet
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Transform your fitness journey into an adventure with Pet-Jam – the virtual pet that lives on your Apple Watch and thrives on YOUR real-world exercise! HATCH & EVOLVE Start with a mysterious egg that hatches based on your burned calories. Watch your pet grow through 6 life stages: Egg → Baby → Child → Teen → Adult → Elder. Each evolution is a milestone celebrating YOUR fitness progress! REAL WORKOUTS, REAL REWARDS Pet-Jam syncs with Apple Health to track your active calories. Every calorie you burn becomes food for your pet. Run, walk, swim, or lift – your pet eats what you earn! FEED TO KEEP ALIVE Burn 200+ calories to unlock food. Tap to feed your pet and maintain your streak. But be careful – neglect your pet for 3 days and it may not survive! TRACK YOUR PROGRESS • Daily feeding streaks • Lifetime calories burned • Evolution milestones • Pet longevity records DESIGNED FOR APPLE WATCH Built natively for watchOS with: • Beautiful pixel-art animations • Haptic feedback for every interaction • Quick glances at your pet's status • Daily reminder notifications MOTIVATION THAT WORKS Unlike boring fitness trackers, Pet-Jam gives you an emotional connection to your workouts. You're not just burning calories – you're keeping your digital companion alive and happy! Perfect for: • Fitness beginners seeking motivation • Gamification enthusiasts • Nostalgic Tamagotchi fans • Anyone who needs that extra push to stay active Download Pet-Jam and turn every workout into a reason to care!
chrtz
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A step‑based character ranking app with heatmap visibility and group competition. chrtz turns your steps into rank. Pick your favorite character, compete in solo or group rankings, and climb the leaderboard. Top spots unlock visibility perks—like message highlights and a larger presence on the heatmap. Track progress with Live Activity, earn rewards, and customize your character’s look with avatars and backgrounds. Every step counts, and every rank change is real. Highlights Step‑based solo & group rankings Top‑rank visibility perks (message highlight, heatmap presence) Live Activity for quick progress checks Character customization (avatars & backgrounds) Events and rewards tied to activity
Screenshots
Verdict
The clearest difference is iOS requirement: chrtz at 16.2 against Pet's 18.6. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Pet | chrtz |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 18.6 | 16.2 — better |
| Further details — not scored | ||
| Size | 2 MB | 59 MB |
| Age rating | 12+ | 4+ |
| Developer | Kenan Firmansyah | Sungsu Choi |
In-app purchases
Pet
No in-app purchases
chrtz
No in-app purchases









