Comparison

Corner Calculus vs SnoTel Mapper

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

Head to head
About

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.

Highlights
  • Miter joint calculation
  • Edge angle and dimension calculation
  • Corner rounding with radius
  • Supports various joint configurations
  • Professional woodworking tool
Features
Read full description

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!

About

SnoTel Mapper

Features
Read full description

SnoTel Mapper puts real-time snow data in your pocket — 900+ USDA SNOTEL stations across the western United States, plus British Columbia snow pillows. Track snow conditions, avalanche forecasts, terrain, and weather for safer backcountry trips. Built for skiers, snowboarders, snowshoers, winter hikers, and anyone who needs accurate snowpack information. Free Features: • Maps of SNOTEL, SNOW, and SCAN sites, plus BC Automated Snow Weather Stations • Current and historical snow depth, with averages and last-year comparisons • Temperature and precipitation • Avalanche forecast overlays with current danger ratings • Terrain overlays: aspect, hillshade, and slope • Unlimited favorites with offline caching • Charts of snow depth trends, and shareable station cards • Light, dark, and Neon themes; metric or imperial units • Apple Watch: top 3 favorites with depth, temperature, and 24-hour change • Offline access when you are out of cell service Pro Features: • Hourly data instead of daily summaries • Point forecasts on each station, or long-press the map (NOAA in the US, Canada HRDPS for BC) • Save up to 10 weather spots and reopen their forecasts • Morning Brief: compare your top 3 favorites, with a daily notification at a time you choose • Snowfall Watch: flag favorites that gain an amount you set over 8, 12, or 24 hours • Storm totals: 24/48/72-hour depth change, plus daily high and low temperatures • Snowfall prediction gauges • Multi-model forecasts for precipitation and temperature • Nearby webcams to check ground conditions Reorder favorites, export a backup, and share a conditions card. Map clustering keeps hundreds of stations easy to browse. Your first three favorites refresh hourly and stay on Apple Watch. Perfect for backcountry skiers and snowboarders, winter campers, weather enthusiasts, and guides who want official station data before they leave the trailhead. • Coverage: 900+ SNOTEL stations, plus SNOW, SCAN, and BC snow pillows • Official networks used by avalanche forecasters and water managers • Smart caching for fast loads and offline use • No personal data collection. Location only centers the map and is never stored • Regular updates shaped by community feedback Data from USDA NRCS SNOTEL, BC Snow Survey / River Forecast Centre (ASWS), NOAA, Environment and Climate Change Canada (HRDPS), USGS 3DEP terrain, and regional avalanche centers via Avalanche.org. Plan a tour with snow depth and avalanche danger, check a trail before you go, compare this season with last year, and follow storms as they add up. SAFETY NOTICE Data from USDA NRCS, British Columbia, and other sources is for information only. Availability and accuracy vary. Check official forecasts from regional avalanche centers and use your own judgment. The developers are not responsible for decisions made from this app. Pro features require a 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

Corner Calculus3 screens
SnoTel Mapper4 screens

Verdict

The call

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 2 months) and iOS requirement (12.0 vs 15.6). 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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Corner Calculus ships an update weekly, SnoTel Mapper every 2 months. Both last shipped on October 24, 2026.

Scorecard3 real differences · 6 level
Corner Calculus versus SnoTel Mapper: the parameters behind the verdict, then further details
ParameterCorner CalculusSnoTel Mapper
Price$1.99 — better$2.49
Rating4.3 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyWeekly — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS12.0 — better15.6
Further details — not scored
Size12 MB71 MB
Age rating4+4+
DeveloperSergey KirichenkoJason Flaherty

In-app purchases

None

Corner Calculus

No in-app purchases

2 purchases

SnoTel Mapper

Subscriptions2
  • Premium Monthly Subscription7 Days trial$2.991 Month
  • Premium Yearly Subscription$24.991 Year

Questions

Is Corner Calculus free?
Corner Calculus costs $1.99, with no in-app purchases.
Is SnoTel Mapper free?
SnoTel Mapper costs $2.49, and also offers in-app purchases.
Do Corner Calculus or SnoTel Mapper have ads?
Neither Corner Calculus nor SnoTel Mapper shows ads.
Which is updated more often, Corner Calculus or SnoTel Mapper?
Corner Calculus ships an update weekly, and SnoTel Mapper every 2 months. Most recently, Corner Calculus was updated on October 24, 2026 and SnoTel Mapper on October 24, 2026.

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