Umply vs Know Ball
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Umply
This app streamlines youth sports league management, automating umpire scheduling, assignments, and payments. It offers smart auto-scheduling, instant schedule imports, and one-click payments for administrators, while providing umpires with instant game acceptance and automated payouts.
- AI-powered auto-scheduling
- Import schedules from GameChanger/SportsEngine
- Automated umpire payments via Stripe
- Tournament bracket generation
- Public team pages with custom URLs
- Real-time assignment notifications
- Rulebook assistant
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Simplify Your League Management Umply transforms how youth sports leagues manage umpire scheduling, assignments, and payments. Built by umpires, for leagues. For League Administrators: Smart Auto-Scheduling - AI-powered assignments that factor in umpire location, availability, and travel time Instant Schedule Import - Upload from GameChanger, SportsEngine, or any CSV format One-Click Payments - Automated payment processing through Stripe - no more checks or cash Tournament Brackets - Generate professional brackets with multiple seeding options Public Team Pages - Share schedules and info with parents via custom URLs Real-Time Updates - Instant notifications when umpires accept or decline assignments For Umpires: Accept Games Instantly - See available assignments and claim them with one tap Game Day Check-In - Simple check-in system for accurate payment tracking Automated Payments - Get paid directly to your bank account after each game Travel Optimization - See distance and travel time before accepting Schedule Management - All your assignments in one place with calendar sync Rulebook Assistant - AI-powered rulebook search for quick rule clarifications Why Leagues Choose Umply: Save 10+ hours per week on scheduling Eliminate payment headaches and paperwork Reduce no-shows with automated reminders Professional communication with umpires and parents Complete transparency for all stakeholders
Know Ball
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Think you know ball? Prove it. Know Ball drops a fresh NBA trivia quiz every morning. Answer 10 questions against a 24-second shot clock, earn points for speed and accuracy, and see how you stack up on the leaderboard. DAILY QUIZ A new quiz drops every day at 7:00 AM. Ten questions. 24 seconds each. The faster you answer, the more points you earn. Come back every day to build your streak. LEADERBOARD Compete against the community with daily and weekly leaderboards. Climb the rankings, earn medals, and prove you really know ball. GROUPS Create private groups with friends using invite codes or shareable links. Track group leaderboards and see who in your circle actually watches the games. HOT TAKES Browse curated NBA hot takes from pundits — ranked from mild to scorching. React, comment, and debate with the community in threaded discussions. Upvote the best takes, call out the bad ones. WEEKLY POLL Vote on the biggest NBA questions of the week and see where the community stands in real time. YOUR PROFILE Track your stats — total XP, quizzes played, and win streaks. Upload a profile photo, set your username, and build your reputation. KNOW BALL PRO Upgrade to Pro for an ad-free experience. Terms of Use: https://knowball.club/terms
Screenshots
Verdict
The clearest difference is in-app purchases: Umply at none against Know Ball's 1. On price, update cadence, ads and device support 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
Both are free to download. Know Ball sells 1 in-app purchase, starting at $2.99 per month. Umply asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | Umply | Know Ball |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (25 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 25 — better | — |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 71 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Vaccaro | Derek Dawson |
In-app purchases
Umply
No in-app purchases
Know Ball
- Know Ball Pro$2.991 Month









