Comparison

Ring Sizing vs AuthTech Authenticator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Ring Sizing

Accurately measure ring sizes using your phone's screen. Determine diameter, circumference, and convert between international sizing systems. Ideal for jewelers and shoppers needing precise measurements.

Highlights
  • Measure ring diameter on screen
  • Determine circumference in mm/inches
  • Pacher method calculation
  • International size conversion (EU, US, UK, JP)
  • Precise slider for measurement
Features
Read full description

Ring Size Find the perfect ring size quickly and accurately. Ring Size makes it easy to determine the correct ring size for yourself or someone special. Simply place a ring directly on your iPhone or iPad screen and adjust the on-screen circle with the slider until it perfectly matches the inside diameter of your ring. The app instantly calculates all important measurements and converts them into the most common international ring size standards. Features • Measure ring size directly on your screen • Precise diameter adjustment with an easy slider • Calculate ring circumference in millimeters and inches • Display the inside diameter • International ring size standards: * European sizes * US sizes * UK sizes * Japanese sizes • Supports the Pacher sizing method • Fast, accurate and easy to use • Perfect for jewelry shopping, jewelers and goldsmiths Whether you're buying an engagement ring, wedding band or fashion jewelry, Ring Size helps you find the perfect fit and avoid costly mistakes. An essential tool for online jewelry shopping and professional use.

About

AuthTech Authenticator

Features
Read full description

1. This app is not restricted for a single company anyone can use it. To use this application the users have to setup 2FA (TOTP) in their own website or app where they wants to use this application for login based on TOTP. 2. This application is open for all to utilise as per their need. 3. To enable 2 Factor authentication on any website and application using TOTP mechanism. 4. There are two options in app to obtain an account as: Option1: Users can manually create an account by choosing the option as enter a setup key in the application. Users have to give any Account name, Issuer name, Secret key, encryption algorithm and press the ADD button to create the account. Option2: In this user have to scan the QR Code having secret key, account name, issuer name and encryption algorithm. QR code can be provided by any company or user who is using 2FA or TOTP. 5. No, there is no any paid content or feature in this app. It is completely free to use for all users or companies. 6. Users can also delete the account on Home Screen by double tap on account name there would be a confirmation pop-up to delete the account and user can delete the accounts easily. Once the account is deleted then its deleted permanently. You can set up as many accounts as you require from any application/website/bank and more and enable two-factor authentication on all your preferred accounts. Even if you switch to a new device, you can easily import all your accounts set in the previous device via the relevant options(Transfer Account) provided in the AuthTech Authenticator application. Our team of experts has curated the application and its innate functions so that it is practically easy to use yet powerful in delivering its purpose. The simple interface aims at providing the user with a ‘single-click’ experience to integrate multi-factor authentication in their various accounts. The rampant cyber attacks and leaks as shown by data in recent studies prove that just passwords are not enough to provide security to a person’s/firm’s accounts and especially the accounts related to banks or other finances. So, such a two-factor authentication application becomes a mandate for all individuals and organizations alike.

Screenshots

Ring Sizing4 screens
AuthTech Authenticator4 screens

Verdict

The call

The clearest difference is iOS requirement: AuthTech Authenticator at 12.0 against Ring Sizing's 26.0. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Ring Sizing ships an update every 10 months, AuthTech Authenticator every 7 months. The most recent releases landed on August 17, 2026 and September 9, 2026 respectively.

Scorecard1 real difference · 8 level
Ring Sizing versus AuthTech Authenticator: the parameters behind the verdict, then further details
ParameterRing SizingAuthTech Authenticator
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 10 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.012.0 — better
Further details — not scored
Size10 MB31 MB
Age rating4+17+
DeveloperGerhard LentschikCapricorn Identity Services Pvt. Ltd.

In-app purchases

None

Ring Sizing

No in-app purchases

None

AuthTech Authenticator

No in-app purchases

Questions

Is Ring Sizing free?
Ring Sizing is free to download, with no in-app purchases.
Is AuthTech Authenticator free?
AuthTech Authenticator is free to download, with no in-app purchases.
Do Ring Sizing or AuthTech Authenticator have ads?
Neither Ring Sizing nor AuthTech Authenticator shows ads.
Which is updated more often, Ring Sizing or AuthTech Authenticator?
Ring Sizing ships an update every 10 months, and AuthTech Authenticator every 7 months. Most recently, Ring Sizing was updated on August 17, 2026 and AuthTech Authenticator on September 9, 2026.

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