MagicLockBox vs Ring Sizer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
MagicLockBox
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It is an application for "Magic Lock Box" that enables you to operate the smart key of i car with iPhone. With this app, you can now use your iPhone to perform operations similar to those of a car's smart key, and you no longer have to carry your smart key with you. Of course, it is possible to register multiple smart keys.
Ring Sizer
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Ring Sizer β Quick Ring Size helps you measure ring sizes quickly and accurately using your phone. The app is designed to make ring size measurement easy for everyone, without complicated steps or tools. Whether you are shopping online, buying a gift, or checking your own ring size, Ring Sizer provides reliable and fast results. Key Features Instant ring size measurement Clean and easy-to-use interface Supports multiple ring size standards (US, UK, EU) Ideal for online jewelry shopping Accurate and consistent results Why Choose Ring Sizer Buying a ring with the wrong size can be frustrating. Ring Sizer β Quick Ring Size helps you find the correct size before purchasing, saving time and avoiding returns. Perfect for engagement rings, wedding rings, and everyday jewelry. Who Should Use This App Online jewelry shoppers Engagement and wedding planners Gift buyers Anyone who needs accurate ring sizing Download Ring Sizer β Quick Ring Size A fast, reliable, and simple ring size finder app for everyday use.
Screenshots
Verdict
The clearest difference is update cadence: Ring Sizer at daily against MagicLockBox's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MagicLockBox ships an update every 2 months, Ring Sizer daily. The most recent releases landed on August 26, 2026 and September 14, 2026 respectively.
| Parameter | MagicLockBox | Ring Sizer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Daily β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod, Apple Watch β better | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 14.0 β better |
| Further details β not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | SYSTEM DESIGN CORP | Asil Arslan |
In-app purchases
MagicLockBox
No in-app purchases
Ring Sizer
No in-app purchases
Questions
Is MagicLockBox free?
Is Ring Sizer free?
Do MagicLockBox or Ring Sizer have ads?
Which is updated more often, MagicLockBox or Ring Sizer?
Other comparisons
