Scanner vs RingMeter
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Scanner
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Scanner-Documents PDF transforms your device into a powerful portable scanner. Capture multi-page documents, whiteboards, business cards, and receipts instantly. Our app automatically adjusts scans to fit the screen, crops unnecessary parts, and optimizes brightness so every document is perfectly clear and ready to share. Don't let a lack of a scanner slow you down. With Scanner-Documents PDF, you can create and manage professional-looking digital copies of any document, anywhere you are. Key Features: Scan Anything: Digitize documents, books, posters, and more using your camera. Smart Enhancements: Automatically crop and adjust brightness for high-quality scans. Multi-Page Scanning: Capture many pages in a single document. Flexible Saving: Save your scans in full color or grayscale. Easy Sharing n Printing: Share documents via email or print them. Photo Gallery Import: Scan from your existing photo gallery for added convenience. Scanner-Documents PDF is your go-to solution for a paperless and organized life.
RingMeter
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For online jewelry shoppers who need to know their exact ring size before buying. For partners planning to propose who want to measure secretly without asking. For people sorting through inherited or estate jewelry who need to know which ring fits whom. For wide wedding band buyers who need a more accurate fit than standard sizers can give. RingMeter is the ring sizer that just works. โ Place any ring flat on the screen and align the on-screen circle to its inner edge to read the exact size โ Get instant readings in 14 country standards โ US, UK, EU, Japan, China, Australia, India, Canada, Mexico, Italy, Spain, Germany, Russia, Hong Kong, and Brazil โ at the same time โ Wide band? Enter the band width in millimeters and the app applies comfort-fit compensation automatically, so wedding bands and signet rings fit right โ Measure your finger directly with the on-screen ruler when no reference ring is available โ Save sizes for everyone โ partner, parents, siblings, friends โ and never guess again when buying gifts โ Track every ring you own in a private inventory: diameter, finger fit, optional reference photo, and personal notes. Perfect for organizing estate jewelry, coordinating surprise gifts, or running a small jewelry business โ Export a printable PDF paper sizer with reference circles and a measuring strip, for situations where the phone screen can't be used or to mail an exact size to a jeweler โ Calibrate accuracy with a credit card or coin using the international ISO/IEC 7810 standard โ No system permissions required. No camera, no microphone, no location, no contacts. โ No account. No login. No data ever leaves your iPhone. โ No advertisements. No third-party SDKs. No analytics. โ Long press a profile to edit, swipe to delete, tap + to add a new family member or ring โ Switch between diameter and circumference display modes anytime โ Choose your default sizing standard so the size you care about always shows first โ Re-calibrate the screen anytime if you switch devices or display zoom settings Built for iOS 17. 100% offline. No data collection. No ads. 3-day free trial included. Terms of Use: https://taxlite.net/ring_meter/terms.html Privacy Policy: https://taxlite.net/ring_meter/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Scanner at none against RingMeter's 4. Scanner also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). RingMeter's advantage is ads (none vs shown) and update cadence (every 10 days vs every 116 months). On price there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. RingMeter sells 4 in-app purchases, starting at $1.99 per 7 days. Scanner asks for nothing beyond the download.
Scanner ships an update every 116 months, RingMeter every 10 days. The most recent releases landed on September 26, 2026 and September 11, 2026 respectively.
| Parameter | Scanner | RingMeter |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 116 months | Every 10 days โ better |
| Ads | Yes | No โ better |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.6 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 20 MB | 2 MB |
| Age rating | +4 | 4+ |
| Developer | Aishvarya Sadasivam | ZHENGQIAO JIANG |
In-app purchases
Scanner
No in-app purchases
RingMeter
- Weekly$1.997 Days
- Monthly$4.991 Month
- Yearly$29.991 Year
- Lifetime$79.99









