Referee.pl vs Chalkie
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Referee.pl
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Welcome to the official app of the international Referee Survival Camp! Founded in 2004 by EuroLeague referee Jakub Zamojski, Referee Camp has been providing basketball officials from around the world with a demanding, structured path for real development for over 20 years. This app is your ultimate digital companion for the camp experience, designed to help you prepare, stay organized, and maximize your growth during our intensive high-performance programs. KEY FEATURES: Camp Program & Schedule: Access your daily agenda, including on-court mechanics, physical preparation, and video analysis sessions. Instructors Profile: Get to know our elite instructional team, featuring active EuroLeague, FIBA, and NBA-connected specialists. News & Announcements: Stay up to date with the latest camp updates, registration deadlines, and important notices. Secure Account Access: Sign in easily and securely using Apple or Google to manage your personal camp profile. ABOUT THE SURVIVAL CAMP: Survival Camp is an intensive five-day experience built around small-group work, live 3PO game officiating, and constant feedback. We focus on comprehensive development—technically, physically, and mentally. It is more than just a camp; it is a high-performance environment and an international community united by respect for the game and continuous improvement. Download the app now, prepare mentally and physically, and get ready to challenge yourself.
Chalkie
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Chalkie is the darts scorekeeper that keeps up with your arm. Score a full leg of 501 in seconds: tap what you hit, and Chalkie handles the math, the bust rules and the checkout suggestions — so you can keep your eyes on the board. FREE — EVERYTHING YOU NEED FOR A GAME • X01 scoring: 301, 501 and 701, straight or double out • Automatic checkout suggestions from 170 down — never do checkout math again • Live 3-dart average, first-9 average, doubles percentage • Undo any throw, leg and set tracking • Works 100% offline. No account. No sign-up. No ads — ever. PRO — FOR PLAYERS WHO WANT MORE • Honest DartBot: a fair opponent with 6 levels (35–92 average) that throws dart by dart, misses like a human and checks out like one too • Cricket and Cut-throat Cricket scoring • Unlimited players on one scoreboard — perfect for pub night • Pub Night tournaments: automatic knockout brackets and round-robin for a night with friends • Training games: Around the Clock, Bob's 27, doubles practice • Checkout Coach: see the checkouts you miss most and what to practice • Full match history and long-term statistics • Live TV scoreboard: put the score on any TV, tablet or laptop with a 6-letter code BUILT FOR LEAGUE NIGHT Chalkie was designed with real chalkers in mind: huge numerals you can read from the oche, a keypad you can hit with one hand, and haptics that confirm every dart. It looks like the chalkboard your pub used to have — because that's where darts scoring belongs. SUBSCRIPTION DETAILS Chalkie Pro is available as a monthly or annual subscription, or as a one-time lifetime purchase. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel any time in your Account Settings. Privacy policy: https://chalkiedarts.app/privacy Terms of use: https://chalkiedarts.app/terms
Screenshots
Verdict
The clearest difference is in-app purchases: Referee.pl at none against Chalkie's 4. Chalkie's advantage is update cadence (every 2 days vs every 4 days). On price, ads, device support and iOS requirement 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. Chalkie sells 4 in-app purchases, starting at $4.99 per month. Referee.pl asks for nothing beyond the download.
Referee.pl ships an update every 4 days, Chalkie every 2 days. The most recent releases landed on November 5, 2026 and October 29, 2026 respectively.
| Parameter | Referee.pl | Chalkie |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Apple Watch |
| Requires iOS | 17.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 80 MB | 92 MB |
| Age rating | 4+ | 4+ |
| Developer | Jan Zamojski | Yagel Oshri |
In-app purchases
Referee.pl
No in-app purchases
Chalkie
- Chalkie Pro — Monthly$4.991 Month
- Pro Annual (Special Offer)$11.991 Year
- Chalkie Pro — Annual$29.991 Year
- Chalkie Pro — Lifetime$49.99









