Saisun - AI Clothing Size Measurement App

What Is Saisun?

Saisun is a measurement support app that makes it easier to check and record clothing sizes by photographing garments with your iPhone. In addition to AI-assisted measurement, photographing a reference QR code (reference marker) together with the garment helps establish lengths within the photo. Results can be saved as history in the app, supporting measurement work for marketplace listings and inventory management.

Typical Situations

Measuring lots of clothing for marketplace and auction listings

Listing clothes means measuring lengths and widths item by item. With Saisun, you photograph flat-laid garments to check key dimensions, then create descriptions efficiently while referencing the recorded numbers.

Streamlining size checks in reuse and inventory work

Complete size checks and records for incoming goods in the app, with previously measured garments and their photos always available in the history.

Keeping a record of your own clothing sizes

Save the sizes of clothes you own as history and use them as a reference when buying new clothes online.

Main Features

• Photography-based measurement support: Photograph flat-laid garments to smoothly check key dimensions.
• Reference marker (QR code) support: Including a standard reference object in the shot assists in perceiving sizes within the photo.
• History saving: Keep information and photos of measured garments in the app and review them anytime.
• Shareable image generation: Generate images from your measurement results for use in listings and elsewhere.
• Multilingual support: Localized display including Japanese and English.

Premium Features

• Pants measurement model
• Measurement history expanded to up to 50 entries
• Text editing on output images
• Custom home screen themes

How to Use

• 1. Smooth out the garment and lay it flat.
• 2. Place the reference marker (QR code) alongside the garment. The in-app guide and shooting tips are helpful here.
• 3. Take the photo and check the key dimensions.
• 4. Save the results to your history and use them for listing descriptions or inventory records.

FAQ and Notes

How accurate are the measurements?

Results can be affected by shooting conditions (lighting, distortion, how flat the garment lies) and by how the reference marker is placed. Positioning the marker correctly is key to accurate scale detection. For important transactions such as marketplace listings, we recommend also measuring with a tape measure.

Can I restore my purchase after changing phones?

Use "Restore" in the app to restore your subscription. The app shows an in-progress indicator and result messages for each situation—restored, no matching data, or failed—so you can confirm the state as you go.

Pricing and supported OS

The app itself is a free download on the App Store. Premium features—such as the pants measurement model and expanded measurement history (up to 50 entries)—are offered through the "Premium Plan" in-app purchase (JPY 500). It supports iPhone running iOS 18.0 or later.

Background

Saisun is developed as a "supporter" that streamlines measurement work rather than replacing measurement itself. Updates continue to focus on making everyday measuring more reliable—improving calculation stability, refining subscription restore handling, refreshing the shooting guide, and fixing multilingual display issues.