SKAMPY vs STEM Line Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SKAMPY
Discover skateparks and street spots worldwide with detailed information, navigation, and real-time weather. Connect with other skaters, share photos and videos, and join or create crews to plan skate sessions. Buy and sell gear through the integrated store.
- Global skatepark and street spot map
- Navigation and weather updates
- 3D skatepark views
- Community photo and video sharing
- Crew creation and chat
- Skate schedule planning
- Integrated gear marketplace
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[World Skate Map] Want to find skateparks and street spots in Korea and around the world? Check out skateparks, street spots, and offline stores located in Korea, Japan, and Australia directly on the map. You can get navigation directions via apps, access detailed information, real-time weather updates, and even 3D skatepark views. We plan to continuously update with more countries, so you’ll be able to enjoy skate activities in even more places! [Community & Q&A] Connect with various people and ask questions! Share photos and videos, and easily engage with others through comments. By sharing experiences, we can build a vibrant community together. [Crew Feature] Looking for people to skate with? Join a crew and meet people who share the same hobby. Share schedules and communicate through crew chats to conveniently plan and enjoy skate activities! [Schedule Feature] Add your skate schedule and recruit people to join you. You’ll also receive notifications when your favorite skatepark updates its schedule, so you won’t miss out on any events. [Store] Open your own shop to sell unused items or buy what you need. You can also easily check information on online and offline stores for each skate category and find the items you’re looking for.
STEM Line Builder
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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
Verdict
SKAMPY and STEM Line Builder are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
SKAMPY ships an update every 3 weeks, STEM Line Builder every 2 weeks. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.
| Parameter | SKAMPY | STEM Line Builder |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 126 MB | 118 MB |
| Age rating | 9+ | 4+ |
| Developer | OldJeans Corp. | Ryo Ogasawara |
In-app purchases
SKAMPY
No in-app purchases
STEM Line Builder
No in-app purchases








