SizeSeason: Baby Clothes Size
WHO Growth Tracker & Predictor
Only for iPhone
$1.99 · Designed for iPhone. Not verified for macOS.
iPhone
Stop wasting money! Predict your baby's future clothing size by season and make smart second-hand or thrift store purchases with ease.
Predict your baby's clothing size by season and make smart second-hand or thrift store purchases!
Every parent has faced this issue: buying a beautiful winter coat or a cute summer romper in advance, only to realize when the time comes that the clothes are already too small or way too big. Babies grow at an incredibly fast pace, and matching their growth curve with changing seasons is a constant challenge.
That’s where SizeSeason comes in.
SizeSeason is the first intelligent assistant that crosses pediatric growth curves with local climate data to accurately project your child's ideal clothing size for every month of the coming year. Whether you shop on second-hand apps (Vinted, eBay, Facebook Marketplace), at garage sales, thrift stores, or clearance events, you will know exactly what size to buy in advance.
▸ KEY FEATURES
• Seasonal Size Timeline (ForecastView): Browse a complete 12-month calendar. For each future month, the app estimates your baby's age, the average regional temperature (based on 150 offline climate profiles), and the recommended clothing size (supporting US and EU/cm standards).
• Tailored Growth Engine: The app integrates official WHO (World Health Organization) growth percentile curves. When you input your baby's height and weight, the algorithm automatically adjusts to their actual growth percentile (e.g., 75th percentile) for highly accurate size projections. It also manages gestational age correction for premature babies.
• Simple Wardrobe Tracker (WardrobeView): Easily log the number of clothes you own by category (light tops, warm tops, bottoms, coats, sleepwear) for each standard size (from newborn to 3 years).
• Gap Detector & Smart Shopping Checklist: The app compares your baby's actual wardrobe inventory with future seasonal size predictions. It automatically generates a checklist of missing essentials (e.g., "Needed for this winter in size 12-18m: 2 warm coats and 4 footed pajamas").
• PDF Export for Thrifting: Generate and export a clean, minimal shopping sheet listing your needs by size. Perfect for printing or checking on your phone while browsing garage sales or flea markets.
• Visual Growth Diary (GrowthLogView): Track height (in/cm) and weight (lb/kg) on an interactive vector chart displaying the official WHO reference curves (3rd, 50th, and 97th percentiles).
▸ 100% PRIVATE, SECURE & OFFLINE
Your child's growth data is sensitive and highly personal. SizeSeason is built from the ground up with privacy in mind:
• No Cloud Database: All data remains securely stored on your device.
• No Account Required: Open the app and start using it immediately—no registration, passwords, or emails.
• 100% Offline Functionality: Ideal for thirfting in flea markets or yard sales with poor network reception. The 150 climate profiles are fully embedded.
• Ad-Free & Tracker-Free: No invasive advertising SDKs or tracking codes are included.
Disclaimer: SizeSeason is a utility tool designed to help you choose baby clothing sizes. Percentile calculations are based on public WHO growth reference tables and are for informational purposes only. This app is not a medical diagnostic tool and does not replace regular pediatric care.
Questions or suggestions? Contact us at: contact.devotellix@gmail.com
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, TRIMECH Dhaker, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- TRIMECH Dhaker
- Size
- 16.4 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Devotellix
