Comparison

Worry Cat vs Peptrend

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

Head to head
About

Worry Cat

Features
Read full description

Worry Cat is a cozy place to set down what's on your mind. Tell a worry to your cat, and it gently holds it for you - a small, calming ritual inspired by traditional worry dolls. WHY WORRY CAT • A calm companion - tell your cat anything, anytime, and watch it hold your worry for you. • Your worries are never lost - everything stays editable and saved safely on your device. • Look back with kindness - mark a worry "it's over" and see how often things turn out better than you feared. • No ads and no account - your worry text, photos and voice notes stay on your device and are never uploaded to us. • A gentle daily check-in, never a guilt-tripping streak. WORRY CAT PRO Unlock premium cats, cozy themes, calming sounds, and photo and voice notes. Worry Cat is a comfort and journaling app, not medical care. Be kind to yourself. ---------------------- WORRY CAT PRO SUBSCRIPTION Worry Cat Pro is an auto-renewing subscription with monthly and yearly plans; a one-time Lifetime unlock is also available. Payment is charged to your Apple ID and auto-renews unless cancelled at least 24 hours before the current period ends. Manage or cancel anytime in Settings. Terms of Use (EULA): https://golinski-ventures.pl/worrycats/terms/ Privacy Policy: https://golinski-ventures.pl/worrycats/privacy/

About

Peptrend

Track your weight trends with advanced smoothing algorithms and log GLP-1 doses with estimated circulating levels. Monitor progress towards goals and analyze athletic performance data, all while prioritizing user privacy with no account or network calls.

Highlights
  • Advanced weight trend smoothing algorithms
  • GLP-1 dose logging with circulating level estimates
  • Goal progress tracking with waterfall charts
  • Athlete Mode for VO2 max and heart rate analysis
  • Privacy-focused with no account or network calls
  • Import data from Apple Health
Features
Read full description

Peptrend draws the trend line under your weigh-ins. Body weight swings several pounds a day on water, food, and salt. A single reading is a noisy sample of a slow-moving signal, so Peptrend fits a smoothed line through your data and shows what is happening underneath it. THE TREND Choose how the line gets drawn: exponentially weighted moving average, the Hacker's Diet filter, a Kalman filter, Hull, DEMA and TEMA, rolling median, Kaufman's efficiency ratio, and more. Swipe between methods and watch the same weigh-ins redraw. Import your history from Apple Health or enter readings by hand. DOSES Log GLP-1 doses, injected or oral, and see an estimate of how much is still circulating based on that medication's half-life. Oral tablets are modeled with their own absorption, so a 14 mg tablet is not charted as 14 mg in your bloodstream. Moving to a different medication, or taking two at once? Each one keeps its own half-life and its own line on the chart. Log vials, reconstitution, injection-site rotation, and titration over time. GOAL PROGRESS Set a target weight and a date, or a steady weekly rate. A waterfall chart breaks progress down week by week, colored by the dose you were taking, so the weeks that moved are easy to tell apart from the ones that did not. ATHLETE MODE If you train, switch on Athlete Mode and a new tab charts what your watch already records in Apple Health: VO2 max, heart rate variability, resting and walking heart rate, cardio recovery, blood oxygen, exercise minutes and more. Each line is colored by the dose you were taking, so you can see the two side by side. Peptrend reads those numbers and never writes to them, and it does not claim that one causes the other. PRIVACY No account, no analytics, no advertising, no network calls. Weigh-ins live on your device and in your own private iCloud database, which we cannot read. The privacy manifest declares no collected data and no tracking. PEPTREND PRO Logging your weight and doses is free, and stays free. Pro adds the full set of trend methods, projections, energy-deficit estimates, the goal waterfall, and Athlete Mode. Seven days free, then $12.99 per month, $69.99 per year, or $99.99 once. Peptrend is not a medical device and does not diagnose, treat, cure, or prevent any medical condition, and it does not provide medical advice. Circulating-dose figures are estimates derived from published half-lives, not measurements of your blood. Decisions about your treatment belong with your prescriber. TERMS AND PRIVACY Terms of Use: https://peptrend.app/terms Privacy Policy: https://peptrend.app/privacy

Screenshots

Worry Cat4 screens
Peptrend4 screens

Verdict

The call

Worry Cat and Peptrend are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Worry Cat sells 3 in-app purchases, starting at $3.99 per month and Peptrend sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Worry Cat versus Peptrend: the parameters behind the verdict, then further details
ParameterWorry CatPeptrend
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequency—Every 2 weeks
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size39 MB6 MB
Age rating4+17+
DeveloperGolinski Ventures Sp. z o.o.Fluctus Limited

In-app purchases

3 purchases

Worry Cat

Subscriptions2
  • Pro Monthly$3.991 Month
  • Pro Yearly7 Days trial$14.991 Year
One-time1
  • Pro Lifetime$44.99
3 purchases

Peptrend

Subscriptions2
  • Peptrend Pro Monthly7 Days trial$12.991 Month
  • Peptrend Pro Yearly7 Days trial$69.991 Year
One-time1
  • Peptrend Pro Lifetime$99.99

Questions

Is Worry Cat free?
Worry Cat is free to download, with in-app purchases available.
Is Peptrend free?
Peptrend is free to download, with in-app purchases available.
Do Worry Cat or Peptrend have ads?
Neither Worry Cat nor Peptrend shows ads.

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