LoopSize vs Ring Sizer & Finger Measure
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LoopSize
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Find the right ring size before you buy online, choose a gift, travel, or help a jewelry customer. LoopSize is a precise ring size converter and measurement tool for shoppers, gift buyers, jewelers, and anyone who needs to compare ring sizes across countries. Measure a ring or finger by diameter or circumference, then instantly see matching sizes in the most common international standards. Use LoopSize when you want to: • Check a ring size before ordering from an online store. • Convert ring sizes between countries while shopping abroad. • Choose a gift ring with more confidence. • Help jewelry customers compare local and international sizes. • Record finger and ring measurements for future purchases. • Share a clean PDF with a store, customer, partner, or family member. • Keep diameter and circumference visible for more precise decisions. How it works: 1. Measure the ring or finger using diameter or circumference. 2. LoopSize converts the measurement into equivalent ring sizes. 3. Save the result, review it later, or share it as a PDF. Supported standards: BR, US, UK, EU/ISO, JP, CN, and IN. LoopSize focuses on the measurement behind the size. Instead of guessing from a chart, you can work from the actual diameter or circumference and compare results across multiple standards in one place. This is useful for engagement rings, wedding bands, fashion rings, adjustments, resizing conversations, and repeat purchases. For shoppers, LoopSize helps reduce confusion when product pages use different ring sizing systems. For gifts, it gives you a simple way to save and compare possible sizes. For jewelers, it creates a faster workflow for checking measurements, explaining conversions, and sending results to customers. Pro features: • Branded PDFs help jewelers send professional measurement summaries to customers. • iCloud sync keeps measurements and preferences available across devices. • Measurement history helps with repeat customers, future purchases, and follow-up fittings. Privacy Policy: https://adrianosouzacosta.com.br/apps/loopsize/privacy-policy Terms of Use: https://adrianosouzacosta.com.br/apps/loopsize/terms-of-use
Ring Sizer & Finger Measure
Accurately measure ring sizes using your iPhone. This app provides jeweler-level precision by calibrating to your device, offering two measurement methods and instant conversion between six international standards. Save multiple sizes and access a complete conversion table for confident online jewelry shopping.
- Device-calibrated accuracy
- Measure existing rings or finger directly
- Convert between 6 international size standards
- Save multiple ring sizes
- Complete international conversion table
- Fine-tune controls with incremental adjustments
- Offline functionality
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Find your perfect ring size in seconds with the most accurate ring measurement app for engagement rings, wedding bands, and online jewelry shopping. Designed to eliminate guesswork when buying engagement rings, wedding bands, or jewelry gifts, this app turns your iPhone into a professional ring sizing tool with device-specific calibration for millimeter-perfect accuracy. The ideal solution for surprise proposals, gift shopping, and online jewelry purchases. Whether you measure an existing ring, size your finger directly, or convert between international standards, every measurement is reliable and confident. — KEY FEATURES — • Device-Calibrated Accuracy: Detects your exact iPhone model and applies the correct PPI (pixels per inch) for true-to-life measurements. From 326 PPI on iPhone SE to 460 PPI on iPhone 15 Pro Max, when a 17mm circle is shown, it really measures 17mm on screen. Jeweler-level precision in your pocket. • Two Measurement Methods: Place an existing ring on your screen and match the inner diameter to the on-screen circle, or measure your finger directly using the visual hand guide with precision crosshairs. Perfect for secret proposal planning or when you have no ring to reference. • 6 International Size Standards: Instantly converts between US/Canada (3-13), UK/Australia (F-Z), EU/ISO (44-70), Japan/China (4-30), millimeters (14.0-22.3mm), and inches (0.55-0.88 in). Shop confidently on Etsy, Amazon, Blue Nile, Brilliant Earth, or any global jewelry marketplace. • Save Multiple Ring Sizes: Build a personal collection organized by hand (left/right) and finger (thumb, index, middle, ring, pinky). Add custom titles per entry. Perfect for family gift sizes, jewelry professional client records, or shopping for multiple ring styles. • Complete Conversion Table: A reference guide showing all 27 ring sizes across every international standard in one scrollable table. Compare standards instantly and verify measurements before purchase. • Fine-Tune Controls: Plus/minus adjustment buttons allow 0.3mm incremental changes for exact sizing. Animated ring circle and tick marks ensure confident measurements. Works completely offline — measure anytime, anywhere. — PERFECT FOR EVERY SITUATION — • Surprise Proposals: Measure your partner's existing ring while they sleep, or discreetly size one of their rings when they are away. Silent measurement with no screenshots or notifications keeps the surprise safe. • Gift Shopping: Buying rings for birthdays, anniversaries, Christmas, or Valentine's Day becomes stress-free. Save sizes for every family member and friend. Never guess sizes when shopping online or in store. • Jewelry Professionals: Jewelers, ring designers, and store staff use this app for quick consultations, custom order sizing, and client education. Save unlimited client measurements with custom labels. • Online Jewelry Shoppers: Shop international jewelry websites without sizing anxiety. The conversion system handles every global standard. Preview your exact ring size visually on screen before purchasing. Prevent expensive returns. — PREMIUM — Unlock unlimited potential with Premium. Save unlimited measurements for every finger and every person. Enjoy an ad-free measuring experience. Access priority customer support. Get first access to future measurement tools. — LEGAL — Terms of Use: https://leanstudio.asia/terms-of-use Privacy Policy: https://leanstudio.asia/privacy-policy — SUPPORT — Questions, feedback, or feature requests? Contact support@leanstudio.asia. We value your suggestions to keep improving the app. — GET STARTED — Combine device-calibrated accuracy, dual measurement methods, and international size conversion in one simple app. No more guessing ring sizes or costly jewelry mistakes — just measure, convert, and shop with confidence. Download today and turn your iPhone into a professional ring sizing tool. Perfect for engagement ring shopping, wedding bands, and jewelry gifts.
Screenshots
Verdict
The clearest difference is update cadence: Ring Sizer & Finger Measure at every 3 weeks against LoopSize's every 3 months. Ring Sizer & Finger Measure also leads on iOS requirement (16.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. LoopSize sells 4 in-app purchases, starting at $0.99 per 7 days and Ring Sizer & Finger Measure sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
LoopSize ships an update every 3 months, Ring Sizer & Finger Measure every 3 weeks. The most recent releases landed on September 13, 2026 and September 21, 2026 respectively.
| Parameter | LoopSize | Ring Sizer & Finger Measure |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Adriano Souza Costa | LEAN ASIA CO., LTD |
In-app purchases
LoopSize
- Weekly3 Days trial$0.997 Days
- Monthly$0.991 Month
- Annual7 Days trial$24.991 Year
- Lifetime$24.99
Ring Sizer & Finger Measure
- Weekly$4.997 Days
- Premium Monthly$19.991 Month
- Premium Yearly$24.991 Year
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- Premium Yearly3 Days trial$24.991 Year
- Lifetime3 variants$49.99
Questions
Is LoopSize free?
Is Ring Sizer & Finger Measure free?
Do LoopSize or Ring Sizer & Finger Measure have ads?
Which is updated more often, LoopSize or Ring Sizer & Finger Measure?
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