Comparison

Bubbles vs Let's duck

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

Head to head
About

Bubbles

Features
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What if your steps kept a tiny fish alive? Bubbles is a pet fish powered by your real walks. Every step feeds it, cheers it up, and unlocks new worlds. Bubbles isn't just an app. It's a tiny companion who needs you. Every step you take in the real world powers Bubbles, keeps the water glowing, and helps your fish thrive. Move more, and Bubbles lights up. Slow down, and Bubbles will miss you. Caring for Bubbles is simple and joyful: - Feed your fish fresh food every day - Keep the water crystal clear to swim in - Watch Bubbles react to your real-world movement - Build a caring streak you'll want to protect - Earn achievements as your bond grows - Unlock beautiful new worlds to explore together Bubbles turns walking into something you actually look forward to. No pressure, no guilt, no complicated charts. Just a sweet little fish who's happier every time you move. Your steps come from Apple Health and stay private. Meet your pet fish worth walking for. Terms of Use (EULA): https://bubbles.fit/legal/terms Privacy Policy: https://bubbles.fit/legal/privacy

About

Let's duck

Features
Read full description

A tiny pixel duck on your wrist who keeps you company through every walk, run, swim, ride, and rest day. Let's Duck is a watchOS fitness companion built around one idea: small movement counts, and showing up is the win. Your duck remembers every session, finds little treasures along the way, and quietly cheers you on through your week. YOUR DUCK • A pixel-art friend who reacts to your workouts, the time of day, the weather, and the season • Different greetings in the morning, at sunset, on anniversaries, on holidays • Pet them. They remember every pet you've ever given. • They yawn between 6:30 and 7:30 in the morning • They look up at sunset • They notice when you've been gone 35 WORKOUTS, 8 CATEGORIES • Walking, running & hiking • Swimming • Cycling, indoor & outdoor • Strength training • Cardio machines — rower, elliptical, treadmill, stair stepper • Mind & body — yoga, pilates, tai chi, meditation, stretching • Sports — tennis, basketball, soccer, golf, climbing, dance, martial arts • Snow & water — skiing, snowboarding, surfing, kayaking, paddle Each one has its own little scene — a path, a pool, a dojo, a court, a slope. The duck adapts to where you are. THE WARM STUFF • Streaks with a weekly shield, so one missed day doesn't break the rhythm • Rest day mode — your duck rests with you, no streak penalty • A treasure shelf where every found object remembers which sport it came from • Today's word — a small kindness, changes every day • Daily reminders you can skip on the days you already trained • Weekly review, sports breakdown, time-of-day patterns • Customize your duck — name, color, accessory • Walks count too. Even short ones. PRIVACY Your data stays on your watch. No account, no cloud, no analytics. Just you and your duck. DUCK PREMIUM (OPTIONAL) A one-time purchase unlocks every duck color and accessory, the full workout history beyond 7 days, the achievements gallery with 100+ badges, the monthly heatmap, the year-so-far report, and future seasonal cosmetics. Workout tracking, the duck companion, daily reminders, treasures, streaks, scenes, weekly review, and Today's word are free, forever. If you bought Let's Duck before it went free, you're already Premium — thank you for being there from the start. Made for slow days too

Screenshots

Bubbles4 screens

Verdict

The call

The clearest difference is update cadence: Let's duck at every 3 days against Bubbles's every 8 days. Let's duck also leads on iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Bubbles sells 2 in-app purchases, starting at $4.99 per month and Let's duck sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Bubbles ships an update every 8 days, Let's duck every 3 days. The most recent releases landed on September 8, 2026 and September 9, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Bubbles versus Let's duck: the parameters behind the verdict, then further details
ParameterBubblesLet's duck
PriceFreeFree
Update frequencyEvery 8 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Apple WatchiPhone, iPod, Apple Watch
Requires iOS18.013.0 — better
Further details — not scored
Size24 MB8 MB
Age rating12+4+
DeveloperSunil PMtrung truong

In-app purchases

2 purchases

Bubbles

Subscriptions2
  • Monthly Premium3 Days trial$4.991 Month
  • Yearly Premium3 Days trial$29.991 Year
1 purchases

Let's duck

One-time1
  • Let's Duck Unlimited$0.99

Questions

Is Bubbles free?
Bubbles is free to download, with in-app purchases available.
Is Let's duck free?
Let's duck is free to download, with in-app purchases available.
Do Bubbles or Let's duck have ads?
Neither Bubbles nor Let's duck shows ads.
Which is updated more often, Bubbles or Let's duck?
Bubbles ships an update every 8 days, and Let's duck every 3 days. Most recently, Bubbles was updated on September 8, 2026 and Let's duck on September 9, 2026.

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