Free iPhone ring sizer app: measure a ring on screen, measure finger width, convert US, UK, EU, JP and letter sizes, and save sizes in seconds.
5.84k+ downloads · 4.8 stars
Updated iPhone interface
The updated app keeps ring measurement, finger measurement, conversion, and saved sizes cleanly connected.
Measure a ring, measure a finger, convert standards, and save sizes without visiting a jeweler.
Ring Measurement
Place a ring on the circle and adjust the guide until the inner edge matches.
Saved Sizes
Keep important ring sizes ready for yourself, family, partners, and gift planning.
Global Size Standards
Convert between US, UK, EU, Japan, Australia, India, and millimeter measurements.
Finger Width Mode
No ring? Measure your finger directly across the on-screen bar and fine-tune the millimeter value.
Offline & Private
Works fully offline. Your data never leaves your device. Zero tracking.
Instant Results
Your size appears immediately in all major standards — US, UK, EU, and more.
Engagement Ready
Planning a surprise proposal? Secretly measure a ring while they're away.
Size History
Track how your ring size changes over time with measurement history.
Clean iPhone UI
Large controls, clear rulers, and focused sheets make each sizing task easy to follow.
Q: Is Voice Attack free? A: Voice Attack offers a free trial period, but users need to purchase a license to unlock its full potential.
The standalone version is downloaded directly from the official VoiceAttack website. to unlock the full suite of features. This key is typically purchased through the developer's website and is tied to the user's email address. When a user purchases this version, they are emailed a registration key that they must manually enter into the software to activate it.
Purchase directly through the official VoiceAttack website. voice attack free registration key verified
Searching for a puts your computer security at risk for a product that is already very affordable. Instead of chasing dangerous "cracks," utilize the fully functional trial directly from the official website. For any serious user, the $10 cost for the full version is well worth the security and functionality it provides.
A Voice Attack free registration key verified refers to a registration key that is obtained without paying the official price. This can be done through various means, such as: Q: Is Voice Attack free
Q: Is Voice Attack compatible with my operating system? A: Voice Attack is compatible with Windows 10, 8, 7, and Vista.
Please note that the free registration key provided is for educational purposes only. We encourage users to purchase a legitimate copy of Voice Attack if they plan to use it extensively. to unlock the full suite of features
: Built into Windows 11 (Win + H), this provides system-wide talk-to-text for free.
The trial is strictly intended for personal evaluation. Legitimate Acquisition and Pricing
Avoid the shady corners of the internet promising "verified keys." The risk to your personal data is vastly disproportionate to the tiny cost of supporting a brilliant piece of independent software.
No jeweler visit. No guesswork. Just your phone.
Choose a Mode
Measure an existing ring on the circle, or switch to finger width mode when no ring is available.
Align the Guide
Use the ruler, slider, and plus/minus controls to match the ring or finger width precisely.
Save or Convert
See the measurement instantly, save it for later, or convert it between international standards.
Buy jewelry anywhere in the world with confidence.
US
& Canada
UK
& Australia
EU
Europe
JP
Japan
IN
India
mm
Diameter
Ring Sizer works entirely offline. Your measurements never leave your device. We don't collect, share, or sell any of your data. Ever.
"Used this app to measure ring size. It's accurate and it's really helpful."
Pradep12 · App Store Review
Q: Is Voice Attack free? A: Voice Attack offers a free trial period, but users need to purchase a license to unlock its full potential.
The standalone version is downloaded directly from the official VoiceAttack website. to unlock the full suite of features. This key is typically purchased through the developer's website and is tied to the user's email address. When a user purchases this version, they are emailed a registration key that they must manually enter into the software to activate it.
Purchase directly through the official VoiceAttack website.
Searching for a puts your computer security at risk for a product that is already very affordable. Instead of chasing dangerous "cracks," utilize the fully functional trial directly from the official website. For any serious user, the $10 cost for the full version is well worth the security and functionality it provides.
A Voice Attack free registration key verified refers to a registration key that is obtained without paying the official price. This can be done through various means, such as:
Q: Is Voice Attack compatible with my operating system? A: Voice Attack is compatible with Windows 10, 8, 7, and Vista.
Please note that the free registration key provided is for educational purposes only. We encourage users to purchase a legitimate copy of Voice Attack if they plan to use it extensively.
: Built into Windows 11 (Win + H), this provides system-wide talk-to-text for free.
The trial is strictly intended for personal evaluation. Legitimate Acquisition and Pricing
Avoid the shady corners of the internet promising "verified keys." The risk to your personal data is vastly disproportionate to the tiny cost of supporting a brilliant piece of independent software.
Guides, tools, and charts to help you find the perfect fit.
Ring Size Chart
Complete conversion chart for US, UK, EU, Japan, and Australian ring sizes with diameter in mm.
How to Measure Ring Size at Home
5 free methods to find your ring size without visiting a jeweler — app, string, paper strip, and more.
Ring Size Calculator
Enter your ring diameter or circumference to instantly find your size in every international standard.
UK Ring Sizes (A–Z)
British letter-based sizing guide with full chart, Hatton Garden tips, and UK to US conversion.
Men's Ring Size Guide
Average men's ring sizes, measurement tips, and a complete chart for wedding bands and signet rings.
Secret Engagement Ring Sizing
How to find your partner's ring size without them knowing — clever tips for surprise proposals.
Free to download. Works on iPhone. No tools needed.
