Weight Diary vs Calipet
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Weight Diary
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Logging your weight takes 3 seconds. Open the app, tap +, done. Weight Diary is the simplest way to track your weight — every entry lands on a color-coded calendar, so a whole month of progress is visible at a glance. • Calendar view — entries appear as colored cards on each day, turning your month into a picture. • Context tags — log up to 5 entries a day, tagged Fasted, After meal, Workout, or Other. • Smart filters — show only your fasted weigh-ins to see your true trend. Toggle any context on or off, in both calendar and stats. • Trend charts — see your change over 7 days, 1 month, or 3 months, with period change and average at a glance. • BMI — calculated automatically from your height and weight, with healthy-range guidance. • Your units — switch between kg·cm and lb·ft anytime. • No sign-up — everything stays on your device. No account, no ads. [Premium] Unlock 6-month and 1-year trends, plus viewing and editing entries older than 3 months, with a Premium subscription. • Subscriptions renew monthly and can be cancelled anytime in iOS Settings > Apple Account > Subscriptions. Payment is charged to your Apple ID account, and the subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Terms of Use: https://juno1028.github.io/weight-tracker-legal/terms.html Privacy Policy: https://juno1028.github.io/weight-tracker-legal/privacy.html
Calipet
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Calipet uses AI to scan meals, track calories, and deliver real-time nutrition feedback, all while your virtual pet grows with your progress. With achievements, evolving characters, and mini games like Meal Mastermind, Calipet turns healthy eating into a fun, rewarding journey. Track your calories. Evolve your pet. Transform your health. Terms of Use: https://calibrxai.com/terms Privacy Policy: https://calibrxai.com/privacy
Screenshots
Verdict
The clearest difference is ads: Weight Diary at none against Calipet's shown. Weight Diary also leads on iOS requirement (15.6 vs 18.0). Calipet's advantage is update cadence (every 3 weeks vs every 5 months). 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
Both are free to download. Weight Diary sells 1 in-app purchase, starting at $2.99 per month and Calipet sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Weight Diary ships an update every 5 months, Calipet every 3 weeks. The most recent releases landed on October 18, 2026 and October 5, 2026 respectively.
| Parameter | Weight Diary | Calipet |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 24 MB | 171 MB |
| Age rating | 4+ | 17+ |
| Developer | Juno Kim | Calibrx AI Inc. |
In-app purchases
Weight Diary
- Monthly Subscription$2.991 Month
Calipet
- Calipet Pro Monthly1 Month trial$9.991 Month
- Calipet Pro Annual1 Year trial$59.991 Year









