Step 1 :Set up the game
Organizers choose from 12 supported formats and set up groups ranging from a casual foursome to a 200+ player tournament, assigning teams, substitutes, and communications from one platform.
How MaxLevels Built TeeRival’s Golf Scoring and Tournament Management App
MaxLevels partnered with TeeRival to build a unified platform that automates golf scoring, handicap tracking, payouts, and tournament operations, eliminating the spreadsheets, text chains, and manual calculations that turn a round of golf into an argument about who actually won. Players enter their score once and the platform handles every format-specific calculation behind it, syncing handicaps directly from the USGA system and scoring 12 major game formats automatically, cutting scoring errors by 99%.
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Automated scoring across 12 major golf formats (Skins, Nassau, Left Right Vegas, Match Play, and more), entered once, calculated automatically
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Real-time USGA handicap integration, refreshing every player’s handicap without manual entry
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Automated, hole-by-hole payout settlement for groups from 2 to 200+ players
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Built on AWS for scale, with Flutter powering the mobile app and Node.js/Angular.js behind the platform’s core and admin systems
At a Glance
- Client
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Teerival
- Headquarters
- United States
- Industry
- Sports Technology, Gulf
- Engagement
- App development
- Services Provided
- USGA and payment gateway integration UX/UI design Admin panel web development Cloud architecture, Mobile app development (iOS & Android)
- Stack
- Flutter, Node.js, Angular.js, AWS, Twilio, Firebase, SMTP
- App Availability
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App Store
Google Play
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2–200+Players supported per group
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12Major golf game formats automated
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99%Reduction in Scoring Errors
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Real-TimeUSGA-integrated handicap tracking
Why This Had to Be Built
Golf has been quietly getting more crowded and more diverse: on-course participation in the U.S. hit 29.1 million in 2025, an eighth consecutive year of growth, with more than 8 million female golfers and nearly 4 million juniors now playing, both all-time highs.
More golfers, more formats, and more mixed-skill groups all push
against the same old system: someone’s phone calculator, a
paper scorecard, and an argument at the 19th hole about who
actually owes what.
That breaks down fast once a group
format gets complicated, side games, handicaps, wagers stacked on
top of the actual round, and it breaks down
especially fast for organizers managing groups of
50, 100, or 200+ players at once.
The Challenge
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Disconnected scoring workflows
Manually tracking distinct game formats was filled with errors and delays, eroding player confidence and disrupting the rhythm of play
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A fragmented data ecosystem
Bringing course, player, and handicap data into one connected platform was complex but essential for accurate, real-time insights
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Dynamic handicap synchronization
Delivering up-to-the-minute USGA handicap updates was vital for fair competition, but existing methods lacked the agility to do it at scale
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A heterogeneous user base
Serving golfers ranging from juniors and women (both fast-growing segments) to older, less tech-comfortable players required a solution that bridged generational and technological divides
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Complex payout administration
Reconciling bets for groups of 2 to 200+ across formats like Left Right Vegas or Banker created friction, with manual settlement leading to disputes
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Game format diversity
Supporting the unique rules and scoring logic of many different formats demanded a flexible system, not a one-size-fits-all scorer
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Performance at scale
The platform needed to handle growing adoption and potentially millions of annual rounds without losing reliability
How a Round Gets Scored
Step 2 :Sync handicaps
The platform connects directly to the USGA to pull each player’s current handicap automatically, no manual lookup or entry required.
Step 3 :Enter scores once
Players enter their scores a single time; the app handles every format-specific calculation behind that entry, from Skins to Nassau to 9 Point & Banker.
Step 4 :Track live
Leaderboards, wager standings, and stroke tracking update in real time as the round progresses, so the group stays in the moment instead of doing math between holes.
Step 5 :Settle up automatically
Once the round ends, the platform calculates who won what, hole-by-hole, across all games in play, and routes payouts through the payment gateway, no cash, no arguing, no waiting.
Tech Stack
- Flutter
- Node.js
- Angular.js
- Twilio
- Firebase
- SMTP
Engineering Decisions Worth Knowing About
AWS to absorb data from 23,000+ courses without buckling.
A golf platform doesn’t have predictable, steady load, tournament weekends and weekend mornings create real spikes. Cloud infrastructure built to scale elastically is what lets the platform pull course, player, and handicap data at volume without slowing down exactly when the most golfers are on the course.
Flutter for one mobile codebase across a genuinely broad age range.
Serving junior golfers, tech-comfortable regulars, and older players who are new to apps all through one interface meant the mobile experience had to be consistent and reliable on both iOS and Android without doubling the engineering effort building two native apps in parallel.
A dedicated admin panel in Angular.js, separate from the golfer-facing mobile experience.
Organizers running a 200-player tournament need a fundamentally different tool than a golfer entering their own score. Building the admin/organizer experience as its own web application, rather than cramming tournament management into the mobile app, kept both experiences focused on the job they actually needed to do.
Twilio, Firebase, and SMTP together, not one generic notification layer.
A live leaderboard update, a payout confirmation, and a game invite don’t all need the same delivery channel or urgency. Splitting messaging across SMS (Twilio), push notifications (Firebase), and email (SMTP) let each type of update reach a player through the channel that actually fits it.
The Results
99%Reduction in scoring errors
Automated, format-specific scoring logic replaced manual calculation almost entirely
12Major game formats automated
Skins, Nassau, Left Right Vegas, Match Play, Best Ball, and more, all scored without manual setup.
Real-timeUSGA integration
Every handicap stays current automatically, without extra work from players.
900+Game Combination
The same platform handles a casual foursome and a large organized tournament.
2-200+Supports Groups of Players
The same platform handles a casual foursome and a large organized tournament.
Manual scorekeeping vs. TeeRival
Matrix
Manual scorekeeping
TeeRival
Scoring
Manual scorekeeping
Spreadsheets, texts, and clubhouse math
Spreadsheets, texts, and clubhouse math
TeeRival
Enter once, automatically scored across all active
formats
Enter once, automatically scored across all active
formats
Handicaps
Manual scorekeeping
Manually looked up and applied
Manually looked up and applied
TeeRival
Synced directly from USGA in real time
Synced directly from USGA in real time
Payouts
Manual scorekeeping
Settled by hand, often disputed
Settled by hand, often disputed
TeeRival
Calculated hole-by-hole and routed automatically
Calculated hole-by-hole and routed automatically
The Team
Behind the Project
Building this required more than mobile engineers. User researchers interviewed active golfers to find where scoring, wagers, and group play actually broke down.
UX/UI designers built an interface simple enough for a first-time app user and a longtime golfer alike. Mobile developers delivered the iOS and Android experience; web developers built and maintained the organizer admin panel. Cloud and software engineers built the core scoring logic and AWS data architecture, while systems integration specialists connected the USGA handicap system and payment gateway. QA and support teams tested across all 12 game modes and helped stand up TeeRival Academy, the platform’s onboarding and tutorial resource.
What’s Next for TeeRival’s Platform
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Expanding beyond the current 12 major formats, adding new game types as golfer demand surfaces them
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Continued refinement of quick game setup and group tools, based directly on golfer feedback.
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Growing TeeRival Academy, the platform’s dedicated learning resource, alongside ongoing platform support.
FAQ
What did MaxLevels build for TeeRival?
A complete golf scoring platform with a Flutter mobile app, Angular.js admin panel, and scoring engine, integrated with USGA handicaps, payments, and AWS.
Why does golf need an app?
Multiple games, handicaps, and side bets make scoring complex. TeeRival automates the math and removes manual errors.
How does it handle 12 formats?
Players enter their score once. The engine automatically applies the rules for every active format, reducing scoring errors by 99%.
How does USGA integration help?
Handicaps sync directly from the USGA, keeping scores accurate and fair.
How are payouts handled?
The platform calculates results and automatically manages payouts through the payment gateway.
Why separate player and organizer apps?
Players need simple scoring. Organizers need tournament management, teams, substitutes, and communication—so each gets a focused experience.
Why Flutter?
One consistent mobile experience across iOS and Android from a single codebase.
How does MaxLevels approach different users?
User research helped create a simple experience that works for both tech-savvy players and less-confident users.
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