By Sum Of Us
Report updated May 15, 2026
Sum of Us
For clients of fitness, wellness, and beauty studios who need a mobile-first interface to book classes and manage memberships.
Sum of Us is an established health & fitness app that is completely free.
What is Sum of Us?
Sum of Us is a white-label mobile booking app for fitness and wellness studio clients on iOS and Android.
Users hire the app to manage class attendance and membership status without calling the studio, reducing administrative friction for both the client and the business owner.
Current Momentum
v8.4 · 1w ago
Maintenance- Ships frequent updates for studio branding.
- Maintains core scheduling utility parity.
Active Nemesis
Fragmented niche
No dominant direct rival identified yet — see Other Rivals below.
Other Rivals
7-Day Rank Pulse 🇺🇸
Health & FitnessNo ranking data
Rating Pulse 🇺🇸
Gathering signals...
What makes this app unique?
What Does It Look Like?
How Is The App's Momentum Right Now?
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What Are The Key Features?
Real-time view of studio class calendars and booking interface
Automated alerts for class cancellations, event announcements, and promotional deals
App interface tailored with business-specific logos, colors, and navigation tabs
Self-service portal for users to manage personal information and membership status
How much does it cost?
- Free to download and use for class booking
The app functions as a free-to-use utility for end-users, serving as a B2B distribution tool for Mindbody's business software subscribers.
Who Built It?
Enrichment in progress
Publisher profile available very soon
What other apps does Sum Of Us make?
What do users think recently?
Analysis in progress, available soon
What is the competitive landscape for Sum of Us?
How's The Health & Fitness Market?
Market outlook for this category
Available very soon
The rivals identified
Peers
Offers branded customization options that allow studios to maintain a unique visual identity within the app.
Utilizes push notifications to drive class attendance, a feature we must match to maintain competitive engagement.
Integrates 24/7 door access control, providing a physical security utility that our app currently lacks.
Includes automated billing systems, which significantly reduces administrative overhead for studio owners compared to our manual flow.
Features a specialized swim academy portal that captures a specific niche segment outside of general fitness.
Maintains a higher rating count, suggesting a more established user base and proven reliability in booking.
Offers a dedicated smart timer system for workouts, which is currently absent in our scheduling-focused app.
Provides offline access capabilities, ensuring users can view their routines without a consistent internet connection.
The outtake for Sum of Us
Strengths to defend, gaps to attack
Core Strengths
- Branded customization allows studios to maintain visual identity
- Push notification infrastructure drives class attendance
Critical Frictions
- No native billing or access control
- Limited to basic scheduling tasks
- Lacks offline functionality
Growth Levers
- Integration of wearable workout data
- Expansion into specialized fitness niches
Market Threats
- RhinoFit's 24/7 access control utility
- FlexDay's routine-builder engagement tools
- Reliance on Mindbody backend limits feature agility
What are the next best moves?
Ship offline routine viewing because it is a top engagement gap vs FlexDay → increase session frequency
FlexDay's offline access capabilities provide a utility that keeps users engaged without internet, a gap in our current scheduling-only model.
Trade-off: Push the UI branding refresh to Q4 — branding is a maintenance task vs offline utility which is a competitive gap.
A counter-intuitive read
The app's reliance on the Mindbody backend is not a weakness but a distribution moat, as it allows studios to deploy branded apps without managing their own complex scheduling infrastructure.
Feature Gaps vs Competitors
- 24/7 door access control (available in RhinoFit)
- Automated billing systems (available in RhinoFit)
- Offline routine access (available in FlexDay)
- Smart timer system (available in FlexDay)
Key Takeaways
Sum of Us provides essential booking utility for studios, but its lack of administrative features like billing or access control makes it vulnerable to all-in-one competitors, so the PM should prioritize engagement features to prevent churn to more robust platforms.
Where Is It Heading?
Stable
The fitness studio app market is consolidating around all-in-one administrative platforms that handle billing and physical access. Sum of Us remains exposed to these competitors because it focuses solely on scheduling, so the PM must decide whether to expand into administrative tools or accept a niche utility role.
Recent updates focused on stability and studio branding, indicating a maintenance-heavy posture rather than aggressive feature expansion.
Competitor RhinoFit's 24/7 access control utility creates a high switching cost for studio owners, threatening our long-term B2B retention.