# Scoliometer by Spiral Spine vs OnlinePilatesClasses.com

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 chart position (#197 vs unranked) and iOS requirement (13.7 vs 15.5). On ratings volume, ads, in-app purchases and device support there is nothing between them.

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.

OnlinePilatesClasses.com holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 9 and 10 respectively. Written reviews point the same way: 67% of Scoliometer by Spiral Spine's written reviews are positive against 100% of OnlinePilatesClasses.com's.

Scoliometer by Spiral Spine ships an update every 66 months, OnlinePilatesClasses.com every 2 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Scoliometer by Spiral Spine | OnlinePilatesClasses.com |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.7 (9 ratings)](https://appshunter.io/ios/app/scoliometer-by-spiral-spine/id964978685/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/onlinepilatesclassescom/id6447438943/reviews)** |
| Number of ratings | 9 | **10** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 66 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#197** | — |
| Size | 18 MB | 79 MB |
| Requires iOS | **13.7** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Spiral Spine](https://appshunter.io/developer/964978684) | [Online Pilates Classes LLC](https://appshunter.io/developer/1681287727) |

## What reviewers say

### Scoliometer by Spiral Spine

[App page](https://appshunter.io/ios/app/scoliometer-by-spiral-spine/id964978685)

**Currently charting:** #197 Top Paid · Health & Fitness (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### OnlinePilatesClasses.com

[App page](https://appshunter.io/ios/app/onlinepilatesclassescom/id6447438943)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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 10 ratings.

### Do Scoliometer by Spiral Spine or OnlinePilatesClasses.com have ads?

Neither Scoliometer by Spiral Spine nor OnlinePilatesClasses.com shows ads.

### 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 24, 2026 and OnlinePilatesClasses.com on October 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*