Calorie Creature vs Let's duck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calorie Creature
This app rewards your physical activity by converting burned calories into points. Use these points to hatch and collect virtual creatures, motivating you to reach fitness goals and expand your collection through consistent movement.
- Burn calories for points
- Hatch and collect virtual pets
- Track fitness goals
- Gamified activity motivation
- Expand creature collection
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Turn your movements into rewards! Calorie Creatures transforms the calories you burn into points, which you can use to hatch and collect adorable virtual pets. Stay active, reach your fitness goals, and grow your collection—one movement at a time
Let's duck
This app features a pixelated duck that lives on your Apple Watch and encourages movement without pressure. It integrates with Apple Health, tracks workouts, and offers a calming breathing exercise. Optional purchases unlock customization and history.
- Integrates with Apple Health
- Tracks various workout types
- Offers guided breathing exercises
- Customizable duck outfits and colors
- Displays workout stats
- Watch face complications and widgets
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Let's Duck is a little pixel duck that lives on your Apple Watch and moves with you. I made it because most fitness apps made me feel like I was always behind. Rings to close, streaks to protect, numbers that turn red. I wanted something that just felt nice to open. So there's no score to keep up with here. The duck is simply happy when you move, and happy to see you when you don't. YOU DON'T HAVE TO DO ANYTHING SPECIAL Already use Apple's Workout app, or another app that saves to Apple Health? Your duck picks those workouts up on its own and counts them as its own. You don't have to change how you work out or remember to start anything. Just open the app now and then and say hi. NO PRESSURE, REALLY Take a week off and nothing breaks. Your duck won't sulk. It'll just be glad you're back. If you turn on reminders, they're gentle nudges like "lunch loop if you feel like it", and they skip the days you've already moved. Rest days are part of it. WHAT THE DUCK DOES • Comes along on walks, runs, swims, rides, yoga, strength and lots more, waddling through its own little world while you go • Cheers your small wins with a happy hop • Draws a map of your outdoor workouts, colored by pace, and lets you press play to watch it waddle the whole route again • Shows the stats that matter after a workout: time, distance, heart rate, pace and calories • Breathes with you: rest a finger on the screen for a calm minute on a night pond, with gentle taps for each breath in and out • Gets visitors now and then, like a frog, a hedgehog or another duck, and the odd small wonder like a rainbow or a family of ducklings • Lives on your watch face too, through complications and widgets Everything you record is saved to Apple Health. No account, no sign-up, no ads. FREE, WITH AN OPTIONAL EXTRA Tracking workouts with your duck is free for everyone. If you'd like to support the app, a one-time Premium purchase unlocks every outfit and color, your full history and the achievements gallery. No subscription. Let's Duck is made by one person. If you have an idea or something isn't working right, I'd love to hear from you through the review. Hope your duck makes your day a little lighter.
Screenshots
Verdict
The clearest difference is in-app purchases: Calorie Creature at none against Let's duck's 1. Calorie Creature also leads on iOS requirement (17.0 vs 26.6). On price, rating, ratings volume and ads 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. Let's duck sells 1 one-off in-app purchase. Calorie Creature asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Calorie Creature against 5.0 for Let's duck. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
| Parameter | Calorie Creature | Let's duck |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 — better | 1 |
| Update frequency | — | Every 3 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 17.0 — better | 26.6 |
| Further details — not scored | ||
| Size | 7 MB | 11 MB |
| Age rating | 17+ | 4+ |
| Developer | Nicholas Gordon | trung truong |
Customer experience
Calorie Creature
Let's duck
In-app purchases
Calorie Creature
No in-app purchases
Let's duck
- Let's Duck Unlimited$0.99









