Underdog Fantasy App

Underdog Fantasy App Review

If you’re into fantasy sports and real-money contests, then Underdog Fantasy is definitely worth your attention. Founded in 2020, Underdog quickly became a fan-favorite in the fantasy sports scene by offering a unique twist on traditional DFS (daily fantasy sports) formats. Unlike classic salary cap contests, Underdog focuses on best ball drafts, pick’em games, and other innovative, fast-paced formats that are perfect for mobile users.

Do you want to draft your fantasy team once for the season or play quick player props with a few taps? The Underdog Fantasy app delivers a smooth and exciting experience for both casual and seasoned bettors. In this article, we’ll walk you through everything you need to know about the Underdog app, from downloading and installing it to placing your first bet.

Where Is Underdog Fantasy Available?

One of the biggest advantages of Underdog Fantasy is that it operates under Daily Fantasy Sports laws, not traditional sports betting regulations. This means it’s available in more states than a typical sportsbook. As of mid-2025, Underdog is available in most U.S. states, including major states like:

• AL, AK, AZ, AR, CA, CO, DE, FL, GA, IL, IN, KS, KY, MA, MD, MI, MN, MS, MO, NE, NH, NJ, NM, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WI, WV, WY

However, there are still a few exceptions. The following States currently restrict access.

• Connecticut (CT)
• Hawaii (HI)
• Idaho (ID)
• Iowa (IA)
• Louisiana (LA)
• Maine (ME)
• Montana (MT)
• Nevada (NV)
• New York (NY)
• Washington (WA)

Always double-check local laws to be sure!

Underdog App Details

iOS

• iOS App Size: ~156.2 MB
• Compatibility:
  • iPhone: Requires iOS 15.0 or later
  • iPod touch: Requires iOS 15.0 or later
  • Apple Vision: Requires visionOS 1.0 or later

Android

• Android App Size: ~Roughly 90 MB

The app is lightweight and optimized for fast downloads, even on slower mobile connections. Ideal if you’re comparing the best mobile sports betting apps and looking for something quick and efficient.

Underdog Fantasy App Guide

Section	Description
How to Download the Underdog App	Find out where and how to get the app on iOS and Android
Installing the App	Learn how to properly install the app on your device
Trouble Shooting	Solutions to common download and installation issues
Registering at Underdog	Step-by-step guide to creating your Underdog account
Logging In	How to access your account after signing up
Making a Deposit	How to fund your account for the first time
Claiming the Bonus	Tips on using promo codes and grabbing the sign-up bonus
Placing My First Bet	A quick walkthrough of placing your first contest entry
Betting Offer	Overview of games, formats, and sports you can play
Customer Support	How to get help when you need it
Security & Reliability	Is Underdog trustworthy? We break it down
Baba Faiza’s Personal Story	A real-life experience from a trusted editor
Final Verdict & FAQs	What makes Underdog stand out

How to Download the Underdog Fantasy App

Getting the Underdog app is super easy and only takes a couple of minutes.

For iOS (iPhone/iPad):

For Android:

1. Open the Google Play Store.
2. Type in “Underdog Fantasy” and find the app in the list.
3. Tap Install.
4. If unavailable due to restrictions, download the APK from Underdog’s official website.

If you’re exploring legal sweepstakes sportsbooks in the USA as well, you’ll find Underdog Fantasy a unique and more widely available option, with faster approval and fewer legal headaches.

Installing the App on iOS and Android

After downloading, the installation process is straightforward.

For iOS:

• Once the app is downloaded, iOS handles installation automatically.
• Just tap the app to launch it once it appears on your home screen.

For Android:

• Android also auto-installs apps after downloading from the Play Store.
• If you’re using an APK from the Underdog website (for unsupported states)
• Make sure to enable: “Install from Unknown Sources” in settings

Troubleshooting

Sometimes users run into small hiccups. Here’s how to handle them:

• App won’t download: Check your storage space or network connection.
• App unavailable in store: You might be in a restricted state.
• Can’t install APK: Make sure permissions for unknown sources are enabled.
• App crashes on startup: Restart your phone or reinstall the app.
• Update issues: Clear app cache or check for updates manually.

How to Register at Underdog Fantasy

Registration is quick and takes under 2 minutes:

1. Open the Underdog app.
2. Tap “Sign Up”.
3. Fill out your:
   • Name
   • Email
   • Date of Birth
   • Username + Password
4. Enter your location and confirm you’re 18+ or 21+, depending on your state.
5. Tap Create Account.

Once your account is set up, you’ll be all set to dive into contests and potentially take advantage of one of the best sportsbook bonus offers in the US.

Logging In After Registration

Once you’ve registered:

1. Open the app.
2. Tap “Log In”.
3. Enter your email/username and password.
4. Tap Login.

You’ll stay signed in unless you manually log out or uninstall the app.

Depositing Funds Into Your Underdog Account

Before you can enter contests, you need to deposit funds.

Steps:

1. Tap on your account balance or profile icon.
2. Select “Deposit”.
3. Choose a payment method:
   • Debit card
   • Apple Pay
   • PayPal (in select locations)
4. Enter the amount and confirm.

Minimum deposit is usually $10, and funds are available instantly. Underdog supports several of the best sportsbook payment methods, ensuring secure and near-instant deposits with minimal fees.

Claim Your Bonus with a Promo Code

New users can typically claim a 50% deposit match up to $1,000 using a special offer.

• During sign-up or first deposit, enter your Underdog Fantasy Promo Code.
• Promo cash is credited instantly and can be used for Pick’em or Draft contests.

Pro tip: Always check if there’s a promo running before depositing.

How to Place Your First Bet

Let’s be real: placing a bet (or, more accurately, entering a contest) on Underdog is actually pretty fun.

Pick’em Games:

1. Go to the Pick’em tab.
2. Choose 2-5 player props (e.g., Mahomes OVER 2.5 TDs).
3. Pick your wager.
4. Confirm and submit.

Best Ball Drafts:

1. Go to the Drafts tab.
2. Pick a tournament.
3. Draft your team live against real people.

This format is growing in popularity and even influencing aspects of traditional sports betting in North Carolina and other states, especially where newer fantasy-style betting platforms are entering the mix.

What Can You Bet On?

Underdog doesn’t have “sports betting” in the traditional sense, but its DFS model covers a wide range of sports:

• NFL, NBA, MLB, NHL
• College Football & Basketball
• PGA, Soccer, Tennis
• Esports (League of Legends, etc.)

The betting offer is huge, especially in pick’em games, which include:

• Points
• Rebounds
• Yards
• Strikeouts
• Touchdowns
• Fantasy points

The offering is robust. While it’s not technically “sports betting,” the wide selection makes Underdog feel as competitive as a sportsbook, if not more engaging.

How to Contact Underdog Fantasy

Need help? Underdog offers multiple support options:

• Live Chat: In-app during regular hours.
• Email Support: [email protected]
• Help Center: Available via their website with FAQs and troubleshooting guides.
• Twitter Support: @UnderdogFantasy is active and responsive.

They typically reply within 24 hours, and the chat is pretty fast.

Is Underdog Safe & Secure?

Yes, Underdog Fantasy is 100% safe and legal in states where it’s available.

• The platform is licensed under DFS laws and has a great reputation for reliability.
• Payouts are fast and smooth, usually within 24–48 hours.
• They use SSL encryption and industry-grade data protection.
• All payment transactions are securely processed.

Pro Tip: Always use a strong password and enable 2FA for added security.

Baba Faiza’s Personal Experience

Editor’s Story – Baba Faiza from TrustnBet.com

“I’ve tried a ton of betting apps, but Underdog Fantasy really surprised me. I downloaded the app while waiting for my Uber. In less than 3 minutes, I had the app installed and was already drafting my first fantasy team.

The interface? Super clean. No annoying pop-ups, no endless forms. I loved the smooth drag-and-drop experience in the drafts. I actually hit a $100 win on my second Pick’em game thanks to Lionel Messi going wild that Saturday (netting a brace in a 5-1 win against NY Red Bulls – July 19). After hitting on a $25 Pick’em entry that returned $100, I was hooked. I’ve been recommending it in every Underdog Fantasy review I’ve written.”

What stood out most? The instant deposit, the instant action, and the instant fun. I’ve been hooked ever since.”

Final Verdict – Why We Rate Underdog Fantasy 9.3/10

Underdog Fantasy isn’t your typical betting app, and that’s exactly why we love it.

🔥 Key Highlights:

• Super user-friendly mobile experience
• Legal in more states than most sportsbooks
• Awesome pick’em and fantasy draft formats
• Fast deposits and withdrawals
• Secure, reliable, and responsive support

If you want to experience sports freshly and excitingly, Underdog Fantasy is a must-download. Whether you’re chilling at home or on the go, it keeps the action rolling.

⭐ Our Rating: 9.3 / 10 – Nearly perfect for fantasy sports and prop game lovers.

Frequently Asked Questions