Comparison

Skaters vs STEM Line Builder

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Skaters

This app is a community platform for skateboarders of all levels. It offers tools for practicing, improving, and connecting with others through video sharing, tutorials, and a spot finder. Users can analyze tricks, get advice, and discover new skate locations.

Highlights
  • Video posting and frame-by-frame analysis
  • Trick tutorials and detailed guides
  • Question & Advice forum with AI support
  • Skate spot and shop map
  • Side-by-side video comparison
  • Trick evaluation and comments
Features
Read full description

Skaters is a free community app created for skateboarders. From beginners who have just started skateboarding to advanced skaters aiming for a higher level, Skaters is a skateboard-focused service where you can enjoy practicing, improving, and connecting with others. Experience unique features designed specifically for skaters, including videos, How to content, Question & Advice, and maps. ■ Main Features of Skaters 【Video Posting】 Post clipped videos up to 45 seconds long. You can closely review your footage in sync with scrolling, allowing you to analyze tricks frame by frame and replay key moments repeatedly. Watch other skaters’ movements for inspiration or review your own practice videos to track your progress. With follow, comment, and message features, you can easily connect with other skaters. 【How to】 Learn detailed explanations for each trick, including timing, body positioning, and key points to focus on. From your first make to achieving your ideal style, Skaters supports your progression. 【Question & Advice】 Post skateboarding-related questions or concerns and exchange information with other skaters. You can also receive advice powered by AI. 【Map】 Find nearby skate spots and skate shops. Each spot includes features that allow skaters to connect and interact. 【Comparison (Side-by-Side Viewing)】 Compare your video with another video side by side using frame-by-frame playback. 【Trick Evaluation】 Instead of simple “likes,” you can evaluate individual tricks. Share not only successful makes, but also the style and appeal of each trick. 【Comments】 Leave comments on posted videos to share advice and exchange information. 【Search】 Search by trick name or username. Easily find tricks you are practicing or skaters you are interested in. Skaters of all levels—beginner or advanced—can grow while having fun. Enhance your skate life with Skaters. ■ Ticket System (In-App Purchases) Some features can be accessed using “Tickets.” ・Tickets can be purchased via in-app purchases ・Tickets are valid for 90 days from the date of purchase ・Expired tickets are automatically invalidated ・If you delete your account or withdraw from the service, all unused tickets will be invalidated ・Expired tickets cannot be reissued or refunded Due to network conditions, device performance, OS specifications, or external services, some features may not function properly even when tickets are used. In such cases, tickets will not be reissued, compensated, or refunded. ■ Paid Version (Monthly Subscription) ・Access to all How to content ・AI analysis ・Unlimited Question & Advice ・Unlimited comparison with videos stored on your device ・Effects (such as animation) ・Fisheye feature ・Download your own posted videos ・Ad-free experience 【Subscription Management & Auto-Renewal】 Monthly subscriptions renew automatically. You can stop auto-renewal at least 24 hours before the end of the current period. To change or cancel your subscription, please go to your Apple ID settings after purchase. 【Payment】 Payment will be charged to your Apple ID via in-app purchase. The monthly fee will be charged once the purchase is confirmed. 【Restoring Purchases】 When changing devices, you can restore your previously purchased paid version for free. Please sign in to the App Store using the same Apple ID used at the time of purchase. ■ Notes In-app purchases are processed through your Apple ID. Cancellations and refunds for the current billing period are not available. Subscriptions must be managed through your Apple ID settings, not within the app. Before using the app, please review the “Terms of Service” and “Privacy Policy.” Terms of Service: https://skaters.cloud/term_of_service Privacy Policy: https://skaters.cloud/privacy_policy ■ Contact & Bug Reports info@skaters.cloud For bug reports or requests, please contact us via the email address above rather than the App Store review section.

About

STEM Line Builder

Features
Read full description

STEM Line Builder helps you design "lines" (routines) for longboard dancing. Upload a carving video filmed head-on and the AI reads your posture to draw your board's trajectory as a top-down map. Then just tap a carve on the path and place a step you've learned -- only steps that fit the carves before and after are offered, so your line always flows. --- About subscriptions - Yearly plan: 4,000 JPY / year (auto-renewing) - Monthly plan: 500 JPY / month (auto-renewing) - Lifetime: 8,000 JPY (one-time purchase, does not renew) Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period, and are billed to your Apple ID. You can cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ryoogasawara981.github.io/stem-line-designer/privacy.html

Screenshots

Skaters4 screens
STEM Line Builder4 screens

Verdict

The call

The clearest difference is in-app purchases: STEM Line Builder at none against Skaters's 6. STEM Line Builder also leads on ads (none vs shown) and update cadence (weekly vs every 5 weeks). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Skaters sells 6 in-app purchases, starting at $7.99 per month. STEM Line Builder asks for nothing beyond the download.

UpkeepUpdate frequency

Skaters ships an update every 5 weeks, STEM Line Builder weekly. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
Skaters versus STEM Line Builder: the parameters behind the verdict, then further details
ParameterSkatersSTEM Line Builder
PriceFreeFree
Rating4.7 (6 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 5 weeksWeekly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size135 MB98 MB
Age rating4+4+
DeveloperTaiki KogaRyo Ogasawara

In-app purchases

6 purchases

Skaters

Subscriptions1
  • Premium$7.991 Month
One-time5
  • 10-Ticket Pack$0.99
  • 30-Ticket Pack$1.99
  • 50-Ticket Pack$2.99
Show 2 more
  • 100-Ticket Pack$5.99
  • 200-Ticket Pack$10.99
None

STEM Line Builder

No in-app purchases

Questions

Is Skaters free?
Skaters is free to download, with in-app purchases available.
Is STEM Line Builder free?
STEM Line Builder is free to download, with no in-app purchases.
Do Skaters or STEM Line Builder have ads?
Skaters shows ads; STEM Line Builder does not.
Which is updated more often, Skaters or STEM Line Builder?
Skaters ships an update every 5 weeks, and STEM Line Builder weekly. Most recently, Skaters was updated on September 21, 2026 and STEM Line Builder on September 23, 2026.

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