Comparison

RPM2 vs iClass Builder Player

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

Head to head
About

RPM2

This app works with specialized insoles to help athletes analyze and improve their performance. It monitors range of motion, force distribution, running gait, and cycling to identify and correct bilateral deficiencies, leading to increased strength and speed. Results can be shared with coaches for personalized recommendations.

Highlights
  • Bilateral deficiency assessment
  • Range of motion monitoring
  • Force distribution analysis
  • Running gait tracking
  • Cycling performance metrics
  • Shareable results with coaches
  • Demo mode for feature preview
Features
Read full description

This app is designed to work with the RPM2 insoles. RPM2 (Remote Performance Monitoring/Measurement) allows athletes to assess bilateral deficiencies in their training. By adjusting their training to improve bilateral efficiency, athletes will become stronger and faster. RPM2 has four different types of exercises which can be monitored. These are range of motion, force distribution, running gait, and cycling. Each of these offers a wide range of information to help improve an athletes performance. On that note, results from exercises can be shared to your coach or personal trainer such that they can make recommendations. If you'd like to see what all functionality RPM2 offers without first purchasing a pair of insoles, then activate the Demo version of the app through settings. This will allow you to see the kind of functionality you can expect when using the device.

About

iClass Builder Player

Create and deliver indoor cycling classes with detailed training metrics like heart rate zones, cadence, and power. Instructors can time cues to music, share classes, and even sell their creations. Project ride profiles and additional data to screens for participants.

Highlights
  • Create custom indoor cycling workouts
  • Integrate heart rate zones, cadence, and power metrics
  • Precisely time cues to music
  • Share and sell created classes
  • Project ride profiles and data to screens
  • On-demand interval timer
  • Access music from Spotify, Apple, and Dropbox
Features
Read full description

The new iClass Builder Player creates a way for Instructors of Indoor Cycling or Spinning® classes to use their iPod, iPhone or iPad to deliver master instructor level classes on their iOS mobile devices. Everything from simple target intensity levels in RPE (Rate of Perceived Exertion) to advanced training with Heart Zones®, Cadence and Power can be built into every class with iClass Builder and delivered with this Player app. Cues for changing position can be precisely timed to the music, changes in RPM can be fined tuned, and classes can be continuously improved. Music sources include Spotify, Apple & Dropbox. For instructors lucky enough to teach in a room with a projector or flat screen TV, iClass Builder Player will also project the ride profile along with your personal selection of additional info. On top of the profile, you can choose RPE, Heart Zone, RPM, Power, Track Name, Artist Name, Album Art, Segment Title or even your detailed cues. This next generation of the app also provides a way for instructors to share classes, a long requested feature, and also buy classes; making it especially easy for new instructors to get started. For the more experienced and master instructors, there are also features to allow you to sell your classes – to finally get at little something more back from all that hard work. iClass Builder Player is also loaded with tons of extras like an on-demand interval timer, instant album and artist info at the tap of a finger, and all of your pre-determined cues in an immediate access scrolling screen for easy in-class review when you need it.

Screenshots

RPM24 screens
iClass Builder Player4 screens

Verdict

The call

The clearest difference is rating: RPM2 at 5.0 against iClass Builder Player's 4.4. RPM2 also leads on monetization model (free vs free with in-app purchases) and iOS requirement (8.0 vs 15.0). iClass Builder Player's advantage is ratings volume (40 vs 1). 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.

ReceptionRating · Positive reviews · Number of ratings

RPM2 holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: iClass Builder Player has 40 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

RPM2 ships an update every 2 months, iClass Builder Player every 3 months. The most recent releases landed on October 8, 2026 and October 22, 2026 respectively.

Scorecard4 real differences · 6 level
RPM2 versus iClass Builder Player: the parameters behind the verdict, then further details
ParameterRPM2iClass Builder Player
PriceFreeFree
Rating5.0 (1 ratings) — better4.4 (40 ratings)
Positive reviews—82.9% of reviews
Number of ratings140 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size35 MB19 MB
Age rating4+4+
DeveloperMedHab LLCCycling Fusion

Customer experience

RPM2

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

iClass Builder Player

All ratings38 ratings
Positive84.2%
Neutral2.6%
Negative13.2%
Written reviews35 reviews
Positive82.9%
Neutral5.7%
Negative11.4%

In-app purchases

None

RPM2

No in-app purchases

None

iClass Builder Player

No in-app purchases

Questions

Is RPM2 free?
RPM2 is free to download, with no in-app purchases.
Is iClass Builder Player free?
iClass Builder Player is free to download, with no in-app purchases.
Which has better reviews, RPM2 or iClass Builder Player?
RPM2 is rated higher. RPM2 averages 5.0 out of 5 from 1 ratings, while iClass Builder Player averages 4.4 from 40 ratings.
Do RPM2 or iClass Builder Player have ads?
Neither RPM2 nor iClass Builder Player shows ads.
Which is updated more often, RPM2 or iClass Builder Player?
RPM2 ships an update every 2 months, and iClass Builder Player every 3 months. Most recently, RPM2 was updated on October 8, 2026 and iClass Builder Player on October 22, 2026.

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