Comparison

Riva Circle vs ClassSub

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

Head to head
About

Riva Circle

Features
Read full description

Riva Circle is your destination for elevated Reformer Pilates in Switzerland. Our Pilates-inspired approach combines classical and contemporary movement techniques to deliver transformative and lasting results. No matter your experience, our sessions challenge, support, and empower every level. Begin your personal Riva journey and become part of our community. Download the Riva Circle app to easily explore and book your favorite classes – Base, Boost, Flow, Ballet, and more. Seamlessly manage bookings and waitlists, track memberships and class packages, stay informed about new studio openings and exclusive events, connect with your local studio, and access helpful FAQs – all in one place.

About

ClassSub

Features
Read full description

When you can't teach, someone you trust can. ClassSub is a sub-coverage app built for fitness instructors. It works for yoga, pilates, barre, group fitness, dance, and anything class-based. Post a sub request once. The trusted instructors in your group see it instantly. The first qualified person claims it. No public marketplace, no random instructors, no group-chat scramble at midnight. WHY CLASSSUB IS DIFFERENT β€’ Trusted circle, not a marketplace Your sub requests only go to people you've explicitly added to your group. You build the circle once. The trust compounds. β€’ Structured class handoff Door code, music, mat orientation, regulars with special needs, expected attendance, level. Every field built from real instructor research. Your sub walks in already knowing the room. β€’ Anti-poaching by design Subbing your class isn't an audition. After every cover, the substitute gets a one-tap reminder. Subbing stays subbing. β€’ Auto-calendar sync Claim a class. It lands in your system Calendar with reminders at 24h, 4h, 1h, and 30 minutes before. Even 20-year veterans miss classes when they're not on the calendar. β€’ SOS escalation Out of time? Hit SOS. Every eligible instructor gets a priority alert immediately, bypassing head-start windows. β€’ Pass silently Not your class this time? Pass without notifying the poster. No social weight. Reversible. WHO IT'S FOR β€’ Yoga, pilates, and barre instructors juggling 2 to 5 studios β€’ Group fitness teachers who cover for each other on weekly rotations β€’ Studio owners who want their team to coordinate coverage without DMing them constantly β€’ Career substitutes building a roster across multiple studios WHO IT'S NOT FOR β€’ Anyone looking for a public sub marketplace. ClassSub is closed circles only. β€’ K-12 substitute teaching. β€’ Solo gym workouts. This is for class-format coverage. PRIVACY Your data lives in your trusted groups. We don't run ads, don't sell data, and don't share your activity with anyone outside the groups you're in. Full privacy policy: classsub.inpulsd.com/privacy QUESTIONS? hello@inpulsd.com

Screenshots

Riva Circle3 screens
ClassSub4 screens

Verdict

The call

The clearest difference is update cadence: ClassSub at daily against Riva Circle's every 3 weeks. Riva Circle's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Riva Circle ships an update every 3 weeks, ClassSub daily. The most recent releases landed on October 3, 2026 and October 31, 2026 respectively.

Scorecard2 real differences Β· 4 level
Riva Circle versus ClassSub: the parameters behind the verdict, then further details
ParameterRiva CircleClassSub
PriceFreeFree
Update frequencyEvery 3 weeksDaily β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 β€” better17.0
Further details β€” not scored
Size86 MB8 MB
Age rating4+4+
DeveloperSpotbee, Inc.Inpulsd

In-app purchases

None

Riva Circle

No in-app purchases

None

ClassSub

No in-app purchases

Questions

Is Riva Circle free?
Riva Circle is free to download, with no in-app purchases.
Is ClassSub free?
ClassSub is free to download, with no in-app purchases.
Do Riva Circle or ClassSub have ads?
Neither Riva Circle nor ClassSub shows ads.
Which is updated more often, Riva Circle or ClassSub?
Riva Circle ships an update every 3 weeks, and ClassSub daily. Most recently, Riva Circle was updated on October 3, 2026 and ClassSub on October 31, 2026.

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