NailQ: Checkout QR vs Ring Sizer
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Feb 19, 2026 for NailQ, Nov 8, 2026 for Ring Sizer.
The short answer
- Only Ring Sizer lists a free plan.
Head to head
- Denmark
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · International scales (EU, UK, US, IT)
- · Size chart
Starter
- · 30 measurements
- · Custom image on start screen
- · In-stock information
- · Ring-specific size adjustments
- · Usage analytics
Pro
- · 300 measurements
- · Custom branding (font option + colors)
- · Custom logo
Scale
- · 1200 measurement
- · Advanced Support
- · Email my size
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureGuarantee an ideal fit with our pre-designed measurement blocks, created specifically for stores that sell press-on nails. Seamlessly integrate these blocks into your Thank You and Order Status pages to collect nail size details after purchase. Each block includes a QR code that guides customers through the sizing process, making it quick and easy to provide accurate measurements.
RingSizer helps your customers find their ideal ring size. Sizing uncertainty is one of the main reasons for cart abandonment and returns for jewelry merchants. Our app adds a “Find My Size” button to product detail pages, allowing your customers to easily measure their fingers or an existing ring directly from their phone. Co-developed with jewelers, we use machine learning for size prediction.
- QR code for nail measurements
- No account required
- Appears on the Thank You and Order Status pages
- Measure anywhere: Guided measurement of finger or rings using a phone
- Reliable: Built and calibrated to work across different body types
- Plug-and-play: Easily integrate RingSizer into your store design
- International: Built-in conversion and size charts for common scales
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  NailQ |  Ring Sizer |
|---|---|---|
| Detected stores | Not published | 4 |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Apparel & Accessories |
| Top store countries | Not published | Denmark |
Reviews
| Measure | NailQ | Ring Sizer |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 9 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | NailQ | Ring Sizer |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | No monthly plan listed | $9/month |
| Longest free trial | Not listed | 15 days |
| Plans listed | Not published | 4 |
Listing
| Measure | NailQ | Ring Sizer |
|---|---|---|
| Shopify category rank | #154 | #58 |
| Shopify App Charts | Not on this week’s charts | #7 in Product display - Other |
| Built for Shopify | No | No |
| Launched | Apr 4, 2025 | Apr 21, 2025 |
| Languages | 1 | 1 |
| Developer | Standard Measure Technologies | R11N Ventures GmbH |
FAQ
NailQ and Ring Sizer: common questions
- Is NailQ or Ring Sizer cheaper?
- Only Ring Sizer lists a free plan. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Feb 19, 2026 for NailQ, Nov 8, 2026 for Ring Sizer; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Feb 19, 2026 for NailQ, Nov 8, 2026 for Ring Sizer. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.