Corner Calculus vs SnoTel Mapper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Corner Calculus
This professional tool simplifies the calculation of corner miter joints for woodworking projects. It accurately determines edge angles and dimensions for various joint configurations, including corner rounding with a specified radius.
- Miter joint calculation
- Edge angle and dimension calculation
- Corner rounding with radius
- Supports various joint configurations
- Professional woodworking tool
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Application for calculating corner miter joints (connection of parts with beveled butts). This professional tool is indispensable for joinery or carpentry work. The miter joint is extensively used in woodworking in making of boxes, doors, cabinets, etc. Calculating a butted joints is very complicated operation. But not for that application! Calculate exact edge angles and dimensions of parts for various joint configurations. You can set the angle between the sides, the slope of each side. In addition, obtain the dimensions of the intermediate segments for a perfect corner rounding, by specifying the rounding radius. Use this app to take your woodworking to the next level. Surprise yourself by creating complicated things with the amazing carpenter tool - Corner Calculus!
SnoTel Mapper
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SnoTel Mapper puts real-time snow data from 900+ SNOTEL weather stations in your pocket. Track snow conditions, avalanche forecasts, and weather data for safer backcountry adventures. Perfect for backcountry skiers, snowboarders, snowshoers, winter hikers, and anyone who needs accurate snowpack information for winter recreation. Free Features: • Interactive maps with all SNOTEL stations across the United States • Current and historical snow depth data with 20-year averages • Temperature and precipitation tracking • Avalanche forecast overlays with current danger ratings • Unlimited favorite stations with smart offline caching • Beautiful charts and graphs showing snow depth trends • Light and dark themes for any viewing preference • Offline access for backcountry use without cell service • Historical data comparisons to last year and averages Pro Features: • Hourly data updates (vs. daily summaries) for precise tracking • 3-day NOAA point forecasts for each station location • Snowfall prediction gauges showing expected accumulation • Top 3 site SNOTEL alerts for your most-used stations • Multi-model weather predictions with precipitation and temperature • Nearby webcam feeds to verify actual ground conditions • Pin primary station to open automatically on launch BEAUTIFUL & INTUITIVE Modern design with smooth animations, customizable views, and dark mode support. Reorder your favorite stations, export favorites for backup, and pin your primary station for quick access. Smart clustering on maps makes it easy to navigate hundreds of stations. PERFECT FOR • Backcountry skiers and snowboarders planning safer trips with current conditions • Winter campers monitoring weather patterns and snow accumulation • Weather enthusiasts tracking snowpack development throughout the season • Mountain guides and avalanche professionals accessing official NRCS data KEY BENEFITS • Complete Coverage: Access over 900 SNOTEL stations plus SNOW and SCAN monitoring sites • Official Data: Direct access to USDA NRCS sources—the same data used by avalanche forecasters • Lightning Fast: Smart caching ensures instant load times and reliable access in poor connectivity • Privacy First: Zero personal data collection. Location used only for map centering, never stored • Continuously Improving: Regular updates bring new features and performance improvements • Community Input! TRUSTED DATA SOURCES Official data from USDA Natural Resources Conservation Service (NRCS) SNOTEL network, NOAA National Weather Service, and regional avalanche information centers via Avalanche.org. The same authoritative data sources used by avalanche forecasters, backcountry professionals, and water resource managers. USE CASES • Plan backcountry ski tours with current snow depth and avalanche danger ratings • Check conditions before snowshoeing or winter hiking trips • Monitor snowpack development for water resource tracking • Compare current season to historical averages and last year's conditions • Track temperature trends and precipitation patterns Whether you're planning a backcountry mission, tracking water resources, monitoring winter weather patterns, or just love snow data, SnoTel Mapper is your essential companion for mountain conditions. SAFETY NOTICE This application displays data from USDA NRCS and other sources for informational purposes only. Data availability and accuracy may vary. Always consult official sources, check current avalanche forecasts from regional avalanche centers, and use proper judgment when making decisions about backcountry travel and winter recreation. The developers assume no responsibility for decisions made based on information provided by this application. Pro features available via subscription. Terms apply. Privacy Policy: https://psithurismlabs.com/privacy.html Terms of Service: https://psithurismlabs.com/terms.html EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Corner Calculus at none against SnoTel Mapper's 2. Corner Calculus also leads on update cadence (weekly vs every 6 weeks) and iOS requirement (12.0 vs 17.6). On price, ads 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
Corner Calculus costs $1.99 and SnoTel Mapper $2.49 up front. SnoTel Mapper sells 2 in-app purchases, starting at $2.99 per month. Corner Calculus asks for nothing beyond the download.
Corner Calculus ships an update weekly, SnoTel Mapper every 6 weeks. The most recent releases landed on June 16, 2026 and September 11, 2026 respectively.
| Parameter | Corner Calculus | SnoTel Mapper |
|---|---|---|
| Price | $1.99 — better | $2.49 |
| Rating | 4.5 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Weekly — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 12 MB | 82 MB |
| Age rating | 4+ | 4+ |
| Developer | Sergey Kirichenko | Jason Flaherty |
In-app purchases
Corner Calculus
No in-app purchases
SnoTel Mapper
- Premium Monthly Subscription7 Days trial$2.991 Month
- Premium Yearly Subscription$24.991 Year







