Best Slope Calc Apps

248+ iOS apps curated and reviewed

3.9 avg rating
13 free apps
Updated September 2026

From beginner-friendly picks to power-user tools, our slope calc list covers 248+ iPhone apps updated through September 2026. Compare ratings, prices, and screenshots in one place.

Compare top Slope Calc Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Underground SafetyUnderground SafetyFree4.1★ (35)NoNoMay 2026
2Slope Calculator - CalcSlope Calculator - CalcFree4.3★ (104)NoYesSep 2026
3Slope Calc - Step by stepSlope Calc - Step by stepFreeNoNoMay 2026
4Slope Calculation ToolSlope Calculation ToolFree4.3★ (84)NoNoSep 2026
5Slope Level RXSlope Level RX$1.99NoYesSep 2026
6SlopeCalc: Grade & RampSlopeCalc: Grade & Ramp$3.99NoNoAug 2026
7Slope Calculator & Arc FinderSlope Calculator & Arc Finder$3.992.3★ (3)NoNoMay 2026
8Slope Calculator PlusSlope Calculator Plus$2.99NoNoMay 2026

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FAQ about Slope Calc

What are the best slope calc apps for iPhone?
Underground Safety tops our slope calc apps ranking as of September 2026, with a 4.1-star average from 35 App Store ratings, and it's free to download.
Yes — 13 of the top slope calc apps we rank are free to download, including Underground Safety and Slope Calculator - Calc.
Underground Safety has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 248+ slope calc apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Underground Safety supports Type A, Type B, and Type C soil classifications. This allows for accurate calculations based on the specific ground conditions you are working with.
Yes, you can save the results and data from your excavation calculations as a PDF. This makes it easy to document your findings and refer back to them later.

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