Kiddo Scale vs MARYN
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Kiddo Scale
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Kiddo Scale makes tracking your child's weight simple. Log a measurement in seconds and watch your kids grow on clear charts. โข Growth curves โ compare with WHO, CDC or Czech (SZร) growth charts and see your child's percentile โข Compare by age โ line up siblings and see what they weighed at the same age โข Quick logging with a ruler slider, last weight pre-filled โข Zoomable charts with exact date, weight and percentile โข kg or lb, CSV import and export, iCloud sync โข No account, no ads, no tracking For information only, not a medical device. Talk to your pediatrician about your child's growth.
MARYN
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Maryn is a fitness and lifestyle app built around guided challenges: structured training, meal plans that fit your goals, and a group that starts and finishes together. TRAIN WITH A PLAN Join a challenge and get a week-by-week training plan that unlocks as you go. Every session opens in a workout player that walks you through each block, set and exercise, with demo videos whenever you're unsure of a movement. Prefer your own schedule? Standalone training plans are there too โ start one any time and work through it at your own pace. TRACK EVERY SET Log reps, weight and RPE as you train. Your history stays with you, so you can see what you lifted last time and beat it. Personal records and training streaks are tracked automatically. EAT WITHOUT THE GUESSWORK Get a personalised meal plan built around your goals, with recipes for every meal and macros already worked out. Turn a week's plan into a shopping list grouped by category, so a grocery run takes minutes instead of an hour. SEE PROGRESS THAT ISN'T JUST THE SCALE Record body measurements and progress photos, and watch your workout stats and weekly consistency build over time. DO IT WITH OTHERS Every challenge has its own feed and group chat. Share a finished workout, ask a question, and see how everyone else is getting on. MARYN PRO Full access to challenges, training plans, meal plans and recipes requires a MARYN Pro subscription. โข Monthly โ 19โฌ โข Annual โ 190โฌ Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is switched off at least 24 hours before the end of the current period, and your Apple Account is charged for renewal within 24 hours of the period ending. Manage or cancel your subscription in Settings > [your name] > Subscriptions. Maryn provides general fitness and nutrition information and is not medical advice. Talk to a doctor before starting a new training or nutrition programme. Terms of Use: https://maryn.ee/legal/terms Privacy Policy: https://maryn.ee/legal/privacy Support: https://maryn.ee/support
Screenshots
Verdict
The clearest difference is in-app purchases: Kiddo Scale at none against MARYN's 2. MARYN's advantage is update cadence (every 3 days vs every 19 months) and iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. MARYN sells 2 in-app purchases, starting at $19.00 per month. Kiddo Scale asks for nothing beyond the download.
Kiddo Scale ships an update every 19 months, MARYN every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Kiddo Scale | MARYN |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 19 months | Every 3 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone | iPhone, iPod โ better |
| Requires iOS | 18.0 | 15.1 โ better |
| Further details โ not scored | ||
| Size | 4 MB | 76 MB |
| Age rating | 4+ | 12+ |
| Developer | Miroslav Kocanek | MT Fitness OU |
In-app purchases
Kiddo Scale
No in-app purchases
MARYN
- MARYN Pro Monthly7 Days trial$19.001 Month
- MARYN Pro Yearly7 Days trial$190.001 Year









