Comparison

Ring Sizer Pro vs Always on Display Clock

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

Head to head
About

Ring Sizer Pro

Accurately determine jewelry ring sizes using metric or imperial units. Supports multiple international sizing systems and offers visual guides for precise measurement. Easily share your ring size via email or social media.

Highlights
  • Metric and imperial units
  • Diameter or circumference measurement
  • Visual guides for precision
  • Share ring size easily
  • Multiple international sizing systems
  • Wide size range support
Features
Read full description

Simple and easy to use, but powerfull and accurate tool to quickly find the size of your jewelry ring. With this app you can: - choose between metric and imperial units - choose diameter or circumference - use unique visual guides for precise measuring - easily share your ring size through email and social networks - use up to seven different ring size measure systems, including USA, Canada, Australia, Great Britain, Europe, Italy, Spain, Germany, Russia, Japan, China, India, Hong Kong and Brazil. Ring sizer pro supports a very wide diapason of the possible sizes. From 0000 to 16 in USA size system. Some of the countries share the same measure system. For example USA system is also used in Canada and Mexico. If you don't find you country in the preferences try to find which country use the same system. If you find any mistakes in the measure in you country please send me a letter and I will fix issue in the next app update. Thank you!

About

Always on Display Clock

Features
Read full description

Turn your iPhone into a stunning always-on clock. AOD Clock – StandBy fills your screen with live, animated backgrounds and a big, easy-to-read time, perfect for your nightstand while you charge, your desk while you work, or anywhere you want the time at a glance. LIVE ANIMATED BACKGROUNDS Every clock face sits on a smooth, moving backdrop, rendered live on your device: • Fluid Pastels – soft, drifting color that reacts to your touch • Gradient Grid – rich, flowing gradients • Eclipse – a glowing ring of light • Drifting Contours – slow-moving topographic lines • Paint Flow, Synthesis and more MAKE IT YOURS • Pick your own colors for every background • Adjust animation speed, from calm and slow to lively • Choose a layout: Wide Card, Center Stack, Bottom Row, Minimal, Glass Flip, Glass Ribbon or a classic Analog dial • Choose a font: System, Rounded, Serif or Monospaced • Choose a text style: Normal, Tinted, Liquid or Liquid Glass BUILT FOR ALWAYS-ON USE • Fullscreen clock view with no distractions • Keep Screen Awake option so your clock stays on • 12-hour or 24-hour time • Dark, low-glare design that's easy on the eyes at night HOW TO USE Pick a clock, customize it, and tap Preview Clock. Set your iPhone on a stand or charger, and you have an elegant bedside or desk clock that's always on. PRIVATE BY DESIGN No account, no ads, no tracking. Your clocks and settings stay on your device.

Screenshots

Ring Sizer Pro4 screens
Always on Display Clock4 screens

Verdict

The call

The clearest difference is price: Always on Display Clock at Free against Ring Sizer Pro's $1.99. Always on Display Clock also leads on update cadence (every 2 days vs every 4 months). Ring Sizer Pro's advantage is in-app purchases (none vs 1) and iOS requirement (15.6 vs 26.1). On ads 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

CostPrice · In-app purchases · Ads · Monetization

Always on Display Clock is free to download; Ring Sizer Pro costs $1.99 up front. Always on Display Clock sells 1 one-off in-app purchase. Ring Sizer Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Ring Sizer Pro ships an update every 4 months, Always on Display Clock every 2 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

Scorecard4 real differences · 6 level
Ring Sizer Pro versus Always on Display Clock: the parameters behind the verdict, then further details
ParameterRing Sizer ProAlways on Display Clock
Price$1.99Free — better
Rating2.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.6 — better26.1
Further details — not scored
Size2 MB23 MB
Age rating4+4+
DeveloperMike MelnikovAjul Raj

In-app purchases

None

Ring Sizer Pro

No in-app purchases

1 purchases

Always on Display Clock

One-time1
  • AOD Clocks Pro$4.99

Questions

Is Ring Sizer Pro free?
Ring Sizer Pro costs $1.99, with no in-app purchases.
Is Always on Display Clock free?
Always on Display Clock is free to download, with in-app purchases available.
Do Ring Sizer Pro or Always on Display Clock have ads?
Neither Ring Sizer Pro nor Always on Display Clock shows ads.
Which is updated more often, Ring Sizer Pro or Always on Display Clock?
Ring Sizer Pro ships an update every 4 months, and Always on Display Clock every 2 days. Most recently, Ring Sizer Pro was updated on November 2, 2026 and Always on Display Clock on November 6, 2026.

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