Comparison

Scoliometer by Spiral Spine vs OnlinePilatesClasses.com

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

Head to head
About

Scoliometer by Spiral Spine

This app helps individuals with scoliosis measure ribcage and vertebral rotation to track therapy effectiveness. It can also assist in identifying potential spinal rotation, prompting a doctor's consultation for diagnosis. Users can save results to monitor changes over time.

Highlights
  • Measure ribcage and vertebral rotation
  • Track therapy effectiveness
  • Identify potential spinal rotation
  • Save results over time
  • Easy three-step measurement process
  • Suitable for doctors and home users
Features
Read full description

The Scoliometer by Spiral Spine allows users with scoliosis to measure their ribcage and vertebral rotation. By using the app regularly, users can determine which therapies decrease their spinal rotation.  This Scoliometer may also be used to determine whether scoliosis may be present. How it Works: The Scoliometer by Spiral Spine quantifies the rotational aspect of scoliosis and pinpoints the highest degree of rotation for each curve. By measuring the spinal rotation before and after different exercise and spinal therapy sessions, users can determine if the body responded favorably to that session, and to what degree (through a decrease in rotation and a lower Scoliometer degree reading). Features: • Easy-to-use: three simple steps to get your reading 1. The person with scoliosis stands in front of the person holding the mobile device with the Scoliometer app. 2. The person with scoliosis slowly reaches their hands towards the floor, bending forward through the back. 3. The person with Scoliometer app pulled up on their mobile device puts their thumbs under either side of the phone while looking at the app. They rest their thumbs on either side of the spine and slide the phone down the person’s back in front of them while they roll down. • Accurate: doctors can use it along with home users • Informative: users can save their previous results on their own to show changes over time by saving a screen shot of the Scoliometer at the highest degree of curvature Tips: Not sure if you have scoliosis? Get the app to find out if your spine has rotation. If your readings show that rotation is present, make an appointment with your doctor to confirm if scoliosis is present. Then, use the Scoliometer regularly to track your rotation.

About

OnlinePilatesClasses.com

Access a virtual Pilates studio with classes, workshops, and tutorials for all levels. Connect with a supportive community and learn from certified instructors to improve your physical and mental well-being.

Highlights
  • Library of online Pilates classes
  • Workshops and free tutorials
  • Social media integration
  • Podcast episodes
  • Blog with health and fitness tips
  • Tour schedules and retreat sign-ups
  • Pilates exercise flashcards
Features
Read full description

OnlinePilatesClasses.com is a virtual Pilates studio created by certified Pilates instructor Lesley Logan. Our mission is to help people from all walks of life discover the transformative power of Pilates, regardless of their location or schedule. We believe that regular Pilates practice can lead to a healthier, more balanced lifestyle, both physically and mentally. Our online classes are designed to be accessible to everyone, from beginners to advanced practitioners. We focus on building a strong foundation of Pilates principles, which can then be applied to more advanced exercises and movements. Our instructors are experienced and passionate about Pilates, and they are committed to helping you achieve your goals, whether that's improving your posture, building strength, or simply reducing stress. In addition to our virtual classes, we also offer in-person workshops, retreats, and events. Our community of Pilates enthusiasts is warm, welcoming, and supportive, and we're dedicated to helping each other achieve our goals and lead happier, healthier lives. Whether you're just starting out on your Pilates journey or you're a seasoned pro, we invite you to join our community and discover the transformative power of Pilates for yourself. Our app features: - Library of online Pilates classes, including sessions for all skill levels and areas of focus - Workshops and free tutorials to help you deepen your practice and improve your technique - Social media integration, so you can stay up to date on all of our latest news, updates, and events - Podcast episodes, so you can listen to our experts share their insights and tips for improving your practice - A blog with articles and tips for staying healthy, fit, and focused - Tour schedules, so you can find out where we'll be and join us for in-person sessions - Retreat sign-ups, so you can join us for a luxurious, rejuvenating getaway - An apparel shop, so you can show your support for our community with our branded apparel - Flashcards to help you learn and remember Pilates exercises and movements -Meet our instructors and learn more about the people behind the practice Download our app today and join our community of passionate Pilates enthusiasts!

Screenshots

Scoliometer by Spiral Spine3 screens
OnlinePilatesClasses.com4 screens

Verdict

The call

The clearest difference is price: OnlinePilatesClasses.com at Free against Scoliometer by Spiral Spine's $4.99. OnlinePilatesClasses.com also leads on rating (5.0 vs 3.7) and review sentiment (100% vs 67%). Scoliometer by Spiral Spine's advantage is ads (none vs shown) and chart position (#131 vs unranked). On ratings volume, in-app purchases 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

OnlinePilatesClasses.com is free to download; Scoliometer by Spiral Spine costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

OnlinePilatesClasses.com holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 9 and 9 respectively. Written reviews point the same way: 67% of Scoliometer by Spiral Spine's written reviews are positive against 100% of OnlinePilatesClasses.com's.

UpkeepUpdate frequency

Scoliometer by Spiral Spine ships an update every 66 months, OnlinePilatesClasses.com every 2 months. The most recent releases landed on October 7, 2026 and September 18, 2026 respectively.

Scorecard8 real differences · 3 level
Scoliometer by Spiral Spine versus OnlinePilatesClasses.com: the parameters behind the verdict, then further details
ParameterScoliometer by Spiral SpineOnlinePilatesClasses.com
Price$4.99Free — better
Rating3.7 (9 ratings)5.0 (9 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings99
Update frequencyEvery 66 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidFree with in-app purchases — better
Best chart rank#131 — better—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.7 — better15.0
Further details — not scored
Size18 MB60 MB
Age rating4+4+
DeveloperSpiral SpineOnline Pilates Classes LLC

Customer experience

Scoliometer by Spiral Spine

All ratings9 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

OnlinePilatesClasses.com

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Scoliometer by Spiral Spine

No in-app purchases

None

OnlinePilatesClasses.com

No in-app purchases

Questions

Is Scoliometer by Spiral Spine free?
Scoliometer by Spiral Spine costs $4.99, with no in-app purchases.
Is OnlinePilatesClasses.com free?
OnlinePilatesClasses.com is free to download, with no in-app purchases.
Which has better reviews, Scoliometer by Spiral Spine or OnlinePilatesClasses.com?
OnlinePilatesClasses.com is rated higher. Scoliometer by Spiral Spine averages 3.7 out of 5 from 9 ratings, while OnlinePilatesClasses.com averages 5.0 from 9 ratings.
Do Scoliometer by Spiral Spine or OnlinePilatesClasses.com have ads?
OnlinePilatesClasses.com shows ads; Scoliometer by Spiral Spine does not.
Which is updated more often, Scoliometer by Spiral Spine or OnlinePilatesClasses.com?
Scoliometer by Spiral Spine ships an update every 66 months, and OnlinePilatesClasses.com every 2 months. Most recently, Scoliometer by Spiral Spine was updated on October 7, 2026 and OnlinePilatesClasses.com on September 18, 2026.

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