Comparison

Ring Sizer vs Core Timer

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

Head to head
About

Ring Sizer

Accurately measure ring and finger sizes from home, ensuring a perfect fit for any occasion. Convert sizes internationally and save measurements for future use. Ideal for online ring purchases, eliminating guesswork.

Highlights
  • Measure ring diameter/circumference
  • Measure finger width
  • International size conversions
  • Save measurements
  • Share measurements
Read full description

Quickly and easily find the perfect ring size with this ring and finger sizing app—offering the same precision as your jeweler, from the comfort of your home. Whether you're a professional jeweler, a frequent shopper, or purchasing your first ring, Risi ensures the perfect fit for every special occasion—engagements, weddings, birthdays, holidays, or surprises! Measure fingers or rings with ease, whether it's for yourself, a friend, a family member, or anyone special, and convert sizes across international standards. Risi is the go-to tool for anyone buying a ring online, eliminating the fear of choosing the wrong size. • Get the exact size of any ring: Measure the diameter or circumference in either metric (millimeters) or imperial (US inches) units, for yourself or someone else. • Accurately measure finger size: Easily measure finger width, perfect for when you don't have a ring on hand. • International size conversions: Seamlessly switch between popular global sizing systems (US/CA/MX, UK/AU/NZ, EU/ISO, JP/CN, and more) while maintaining accuracy. • Save measurements: Keep ring and finger sizes saved for future reference and easy access. • Share measurements: Share size info with jewelers or friends via text, email, or social media. No more guessing! With Risi, shop confidently and experience the joy of buying or giving a perfectly sized ring that will be cherished forever. Make special moments unforgettable with a ring that fits just right. To unlock all features and functionality, you can make a one-time in-app purchase for lifetime access (no subscription). This purchase will be charged to your Apple account at the time of confirmation. Privacy Policy: https://ringfitter.alpennec.com/privacy Terms and Conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

Core Timer

Read full description

Take your workouts to the next level with Core Timer, the ultimate timer app for circuits, HIIT, and core training! Whether you’re at home, in the gym, Strength makes it easy to design, save, and run your personalised workouts. Key Features: Custom Workouts: Set work and rest intervals, name exercises, and organise circuits your way. Exercise List: Explore over 1400+ exercises with target muscles and instructions. Check-in: An assistive tool to help you workout alone more safely. Schedule check-ins to make sure you are still okay. Save & Share: Keep your favourite routines for future sessions or share them with friends. Easy-to-Use Timer: Start your workouts with a single tap and focus on your training, not the clock. Edit workouts while running. Flexible Exercise Tracking: Perfect for core, strength, HIIT, or full-body circuit training. Clean Interface: Simple, intuitive, and distraction-free design to keep you moving. Whether you’re a beginner or an experienced athlete, Strngth helps you stay on track, improve consistency, and crush your fitness goals. Start timing your progress today!

Screenshots

Ring Sizer4 screens
Core Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: Core Timer at none against Ring Sizer's 15. On price, update cadence, 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

Both are free to download. Ring Sizer sells 13 in-app purchases, starting at $4.99 per 7 days. Core Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Ring Sizer ships an update weekly, Core Timer every 6 days. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 9 level
Ring Sizer versus Core Timer: the parameters behind the verdict, then further details
ParameterRing SizerCore Timer
PriceFreeFree
Rating4.6 (36 ratings) — better—
Positive reviews88.2% of reviews—
Number of ratings36 — better—
Update frequencyWeeklyEvery 6 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.6
Further details — not scored
Size20 MB12 MB
Age rating4+4+
DeveloperAxel Le PennecJames Mowat

In-app purchases

13 purchases

Ring Sizer

Subscriptions8
  • Weekly3 Days trial2 variants$4.997 Days
  • Weekly$4.997 Days
  • Weekly3 Days trial$5.997 Days
Show 5 more
  • Weekly$6.997 Days
  • Weekly3 Days trial$6.997 Days
  • Weekly3 Days trial$7.997 Days
  • Yearly$17.991 Year
  • Yearly3 Days trial$24.991 Year
One-time5
  • Lifetime$2.99
  • Lifetime$4.99
  • Lifetime$6.99
Show 2 more
  • Lifetime2 variants$19.99
  • Lifetime$99.99
None

Core Timer

No in-app purchases

Questions

Is Ring Sizer free?
Ring Sizer is free to download, with in-app purchases available.
Is Core Timer free?
Core Timer is free to download, with no in-app purchases.
Do Ring Sizer or Core Timer have ads?
Neither Ring Sizer nor Core Timer shows ads.
Which is updated more often, Ring Sizer or Core Timer?
Ring Sizer ships an update weekly, and Core Timer every 6 days. Most recently, Ring Sizer was updated on October 9, 2026 and Core Timer on October 4, 2026.

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