Under Armour vs SidelineSwap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Under Armour
Shop a wide range of athletic clothing, shoes, and gear designed for all fitness levels. Discover exclusive collections, receive personalized recommendations, and enjoy benefits like free shipping and rewards.
- Shop athletic clothing, shoes, and gear
- Exclusive collections (Curry Brand, Project Rock)
- New drop alerts
- Personalized product recommendations
- Free shipping, returns, and exchanges
- UA Rewards program with points and exclusive benefits
- Streamlined checkout with multiple payment options
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Take performance to the next level with the UA App. Shop from our collection of shoes, clothes, and gear designed for athletes of all fitness levels. Whether you're looking to stay cool while training for your next half-marathon, practicing with your team, or hiking outdoors, get all your workout essentials online from Under Armour. In the UA App, you can find: * New drop alerts that notify you when we release our latest sneakers, clothing, and accessories. * Tailored product recommendations to support your training and fitness goals. * Free shipping, returns, and exchanges. * Member-exclusive benefits and rewards when you join Armour Access. UNLOCK THE BEST OF UA WITH ARMOUR ACCESS. Get First Dibs on Gear & Events, cut the line with early access to product drops and ticketed events. Access Exclusive Sweepstakes, enter for a chance to win access to bucket-list-caliber moments. Earn Points To Level Up, For every $1 you spend, we award 5 points you can swap for perks. GET THE BEST GEAR FOR YOUR GAME-PICKED FOR YOU. Whether you play basketball or baseball, or are a runner in training, get personalized recommendations for footwear and apparel so you can crush your next workout. We designed our performance apparel to withstand your training while keeping you comfortable and locked-in. This is go-to athletic gear-for men, women, boys, and girls-all right here. We made online shopping easy for anyone on the go. CHECKOUT QUICKLY & EASILY. With a streamlined checkout process, the UA Shop App ensures a fast and hassle-free shopping experience. Browse through our extensive collection of performance apparel for every sport, find the right fit and style for you, and make secure payments with just a few taps. You can check out with Apple Pay, Klarna, PayPal, or your UA Account-we made it fast and convenient so that you can focus on putting in the work. FIND GIFTS FOR EVERY ATHLETE. Whether the athlete in your life competes in soccer, football, golf, or running, Under Armour makes game-changing performance gear that will withstand training through any season. Shop from our collections and get the perfect gift for that top performer in your life. Check out our athlete's top picks or quickly shop by sport, gender, or price. With free shipping and easy, free returns and exchanges it's no sweat. If you can't decide what to get, grab a UA Gift Card-the gift that's always a hit. CONNECT WITH UNDER ARMOUR EVENTS NEAR YOU. Be the first to know about athlete appearances, UA events, in-store offers, and more when you use the UA Shop App. Join us at an Under Armour Brand House or Factory House, and experience UA online, in-store, and beyond. Download now and start shopping the best performance gear on the plane
SidelineSwap
This app connects athletes to buy and sell sports equipment. Find new and used gear at significant discounts or easily list your own items to earn cash. Join a global community of athletes trading their sports essentials.
- Shop new and used sports equipment
- Save up to 70% on gear
- Sell equipment in minutes
- Prepaid shipping labels provided
- Global marketplace for athletes
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SidelineSwap is where athletes buy and sell their gear. SHOP Shop new and used sports equipment up to 70% off – everything from hockey skates and golf clubs to lacrosse sticks and baseball gloves. SELL Sell in minutes – snap a photo, set a price, and receive a prepaid shipping label when the item sells. Cash in on last season’s gear, or list that old bike - or pair of skis - cluttering your garage. JOIN Join the leading marketplace for athletes. Buy and sell with hundreds of thousands of SidelineSwap users across the world.
Screenshots
Verdict
The clearest difference is update cadence: SidelineSwap at every 5 days against Under Armour's fortnightly. SidelineSwap also leads on monetization model (ad-supported vs free with in-app purchases). On price, rating, review sentiment and ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.8 for Under Armour against 4.9 for SidelineSwap. Both are backed by a comparable volume of ratings — 77K and 59K respectively. Written reviews are what separate them: 82% of Under Armour's written reviews are positive against 80% of SidelineSwap's.
Under Armour ships an update fortnightly, SidelineSwap every 5 days. Both last shipped on October 18, 2026.
| Parameter | Under Armour | SidelineSwap |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (77K ratings) | 4.9 (59K ratings) — better |
| Positive reviews | 82.0% of reviews — better | 80.0% of reviews |
| Number of ratings | 77K — better | 59K |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 17.4 — better |
| Further details — not scored | ||
| Size | 132 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | Under Armour, Inc. | SidelineSwap, Inc |
Customer experience
Under Armour
SidelineSwap
User reviews
Under Armour
From 77K App Store ratingsWhat we love
- 👍 Easy to navigate app
- 🚀 Smooth checkout process
- 💡 Ability to save items for later
- 👍 User-friendly interface
- 👍 Clean and intuitive design
Room to improve
- 🐛 Inaccurate product availability
- 🐛 Inconsistent order fulfillment
- 🔍 Difficulty finding matching items
- 🐛 Unreliable customer service
- 🐛 Inability to edit orders
SidelineSwap
From 59K App Store ratingsWhat we love
- 🚀 Easy to list and sell items
- 👍 Convenient shipping and payment process
- 🚀 Fast sales
- 👍 Lots of items to choose from
- 👍 Great way to buy/sell used sports gear
Room to improve
- 💰 High fees and commissions for sellers
- 🔒 Lack of buyer/seller reviews
- 🐛 Buggy app with technical issues
- 🔒 Poor customer support and dispute resolution
- 🔒 Counterfeit items allowed on the platform
Bugs and requests
Under Armour
Reported bugs
4 issues- App crashing or freezing
- Incorrect product information or pricing
- Issues with login and account management
- Syncing problems between app and website
Requested features
4 requests- Ability to edit personal information within the app
- Option to track order status and history
- Improved product recommendations and outfit suggestions
- Better integration between app and website experience
SidelineSwap
Reported bugs
3 issues- App login issues
- Listing items gets stuck in draft status
- Notification badges not clearing properly
Requested features
4 requests- Add support for Canadian currency
- Allow sellers to rate buyers
- Improve in-app communication between buyers and sellers
- Provide more transparency on fees and policies
In-app purchases
Under Armour
No in-app purchases
SidelineSwap
No in-app purchases
Questions
Is Under Armour free?
Is SidelineSwap free?
Which has better reviews, Under Armour or SidelineSwap?
Do Under Armour or SidelineSwap have ads?
Which is updated more often, Under Armour or SidelineSwap?
Other comparisons
