Comparison

Catzumi vs Stimly

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

Head to head
About

Catzumi

This app transforms your daily walks into a game by caring for a virtual cat. Earn rewards and unlock new looks for your feline friend as you reach your step goals, promoting a healthier lifestyle.

Highlights
  • Gamified walking to build habits
  • Virtual pet care with every step
  • Evolve and customize your cat
  • Unlock new skins and looks
  • Motivation for consistent walking
Read full description

Walk. Track. Feed your cat. Catzumi is the world’s first pixel pet that turns walking into a game! Every step you take helps care for your virtual cat — feed it, evolve it, and unlock new looks as you walk your way to better health. Whether you're taking 1,000 or 18,000 steps a day, your adorable feline companion is with you every step of the way. No experience needed — just lace up and start walking! Why You’ll Love Catzumi: • Gamified Walking – Build a walking habit while leveling up your cat • Virtual Pet Fun – Feed and evolve your cat with every step • Motivation That Lasts – Designed by a fellow walker to help you stay consistent • Customization – Unlock fun skins and personalize your companion Catzumi is 100% free to start. Optional in-app purchases support development and unlock cosmetic items. Download now and start your paw-some journey! Keep walking!

About

Stimly

Features
Read full description

Coffee works differently for everyone — and costs everyone different sleep. Stimly estimates when your caffeine has dropped far enough to stop getting in your way at bedtime. Most caffeine apps just count milligrams. Stimly models how caffeine actually moves through your body — using a science-backed metabolism engine calibrated to your age, weight, sensitivity and habits. YOUR DAY AT A GLANCE • Live caffeine level — a real-time curve of what's active in your system now • Drinking now — log slow sips (yerba mate, big lattes) and watch absorption live • Sleep forecast — see when your body will be ready for quality sleep • Smart advice — gentle nudges when one more espresso would cost you tonight TRACK WITHOUT FRICTION • One-tap logging from your personal drinks library • Barcode scanner for bottled drinks • Daily limit with a clear budget bar (including a lower preset during pregnancy) • Symptom journal — connect how you feel to what you drank • 7-day history of everything you've logged STIMLY PRO — OPTIONAL PAID UPGRADE Everything above is free. These extras require Stimly Pro: • Tolerance tracking — see habituation build and fade week to week • Expert mode — brew method and dry mass for precision logging • Extended history — month and 90-day views • 30-day wellness export — a clean PDF of your patterns SUBSCRIPTION OR ONE-TIME PURCHASE You can get Stimly Pro in two ways: • A monthly subscription that renews automatically. • Open-ended access: one payment, no renewals, no free trial. It lasts as long as we run the Stimly service. If we end the service within 36 months of your purchase, we refund at least a proportional part of the price. See the Terms for details. Your local price is shown in the app before you buy. Payment is charged to your Apple Account at confirmation. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period — manage or cancel any time in your Apple Account settings. Buying open-ended access does not cancel an active subscription. PRIVATE BY DESIGN Your data stays yours. No ads, no tracking across apps, no data selling. Stimly is a wellness tool for healthy adults. It is not a medical device and does not provide medical advice — for health concerns, talk to your doctor. Terms: https://stimly.app/terms · Privacy: https://stimly.app/privacy

Screenshots

Catzumi4 screens
Stimly4 screens

Verdict

The call

The clearest difference is ads: Stimly at none against Catzumi's shown. Stimly also leads on update cadence (every 11 days vs every 6 months) and iOS requirement (16.4 vs 18.6). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Catzumi sells 3 one-off in-app purchases and Stimly sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Catzumi ships an update every 6 months, Stimly every 11 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Catzumi versus Stimly: the parameters behind the verdict, then further details
ParameterCatzumiStimly
PriceFreeFree
Rating4.3 (4 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 6 monthsEvery 11 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS18.616.4 — better
Further details — not scored
Size31 MB62 MB
Age rating4+4+
DeveloperPeter YaacoubZen Media Mateusz Stys

In-app purchases

3 purchases

Catzumi

One-time3
  • Money$4.99
  • Money$7.99
  • Money$14.99
3 purchases

Stimly

Subscriptions2
  • Stimly Pro Monthly$4.991 Month
  • Stimly Pro Yearly$39.991 Year
One-time1
  • Stimly Pro Lifetime$29.99

Questions

Is Catzumi free?
Catzumi is free to download, with in-app purchases available.
Is Stimly free?
Stimly is free to download, with in-app purchases available.
Do Catzumi or Stimly have ads?
Catzumi shows ads; Stimly does not.
Which is updated more often, Catzumi or Stimly?
Catzumi ships an update every 6 months, and Stimly every 11 days. Most recently, Catzumi was updated on November 4, 2026 and Stimly on November 5, 2026.

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