Remember what actually fit.
SizePassport keeps the real evidence—the brand, the size, and how it fit—so your next purchase starts from what you know, not a guess. For you, and for the people you shop for.
Submitted for review · iPhone & Android · free at launch
Fit memory, built around the answer.
SizePassport leads with what you need to know before you buy, then lets you record the outcome in as few taps as a real try-on allows.
- See
- Open the Passport and see the last size that worked, by category and brand.
- Record
- Pick the size scheme that matches the item, then log the honest outcome.
- Return
- Find related evidence fast, with a clear reason for why it's shown.
Know what actually fit last time.
The Passport is answer-first: large size anchors for each category, showing the most recent evidence you recorded—and any brand or model variation beneath it, when a fit differs from the norm.
- Organized by Family and Category, not a flat list
- Brand and model shown together when cut or last matters
- Switch between the people you shop for


More useful than one size field.
Letter sizes, regional numeric systems, waist and inseam, bra band and cup, helmet circumference and shell, glove sizing—each item gets a structured editor built for how that category is actually measured.
Record the honest outcome too: worked, too small, too large, or mixed—so the evidence stays trustworthy, not just optimistic.
Measurements, kept honest.
Log a dated length or weight in the unit you actually measured in—no silent conversion, no guessing. See the latest reading right where it's relevant, like a foot length next to footwear.
- Original units preserved, always
- "Measure again" keeps history instead of overwriting it
- Neutral records with no scoring or health interpretation

Size and fit questions, answered.
What is SizePassport?
SizePassport is a private record of what size actually fit—across clothing, footwear, and fit-sensitive gear like helmets and gloves. It keeps that evidence for you and for the people you shop for, so the next purchase starts from what you know instead of a guess.
Who is SizePassport for?
Anyone who has ever forgotten which size worked at a brand they don’t buy often—cross-brand shoppers, people buying premium or luxury pieces where a wrong guess is costly, riders and cyclists who need a specific helmet or glove fit, and people who shop for a partner, parent, or child.
Is SizePassport a clothing size converter or recommendation app?
SizePassport is a personal fit tracker, not an automatic size converter. It records the brand, category, original size label, date, and how an item actually fit, then brings that evidence back when you shop. It does not guess that one brand or regional size equals another.
Can I track sizes for multiple people?
Yes. Add local profiles for a partner, parent, or child and switch between them, so shopping for someone else pulls up their evidence, not yours.
Will SizePassport need an account?
No. SizePassport works entirely on your device, with a free export any time you want a backup.
When is SizePassport available?
SizePassport has been submitted for store review on iPhone and Android. It is not available to download yet; the store links will appear here after the listings are approved and live.
Stop guessing at checkout.
SizePassport has been submitted for review on iPhone and Android.
Store links will appear here as soon as each listing is live.
