Comparison

Stair Calculator vs Craftmetry

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

Head to head
About

Stair Calculator

This app calculates essential parameters for stair construction, offering flexibility in input and providing multiple step set options. It supports various units and allows results to be easily copied.

Highlights
  • Calculate stair construction parameters
  • Flexible input for Run or Total Run
  • Determine largest and smallest step sets
  • Support for various units
  • Copy results to clipboard
Features
Read full description

Stair Calculator helps you calculate and compare staircase dimensions. FEATURES • Calculate using Run, Total Run, or Stair Angle • Enter a specific number of Runs or explore all calculated options • Support Metric and Imperial units • View detailed measurements and stair diagrams • Export results as a PDF or image • Copy results to the clipboard IMPORTANT Results are generated based on user-provided values and general calculation models. The app is intended for reference and educational purposes only. Please verify all measurements, local building requirements, and safety standards before actual construction. SUBSCRIPTION This subscription package offers unlimited access to all app features throughout the subscription period. • Payment will be charged to your Apple Account at confirmation of purchase. • The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Your Apple Account will be charged for renewal within 24 hours before the end of the current period, and the renewal cost will be identified. • Subscriptions may be managed and auto-renewal may be turned off in your Apple Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. PRIVACY POLICY https://13520178.github.io/StairCalc/policy.html TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ CONTACT If you have any questions or suggestions, please contact us. Email: phannhatd@gmail.com

About

Craftmetry

This app simplifies complex construction calculations for tradespeople. It provides tools for laying out gas and water systems, sizing decks and stairs, and checking voltage drop, turning code charts into easy-to-use field tools.

Highlights
  • Stair layout and stringer diagram
  • Gas line sizing with visual layout
  • Water line sizing and estimation
  • Deck joist and beam sizing
  • Voltage drop calculation
  • Residential system design tools
Features
Read full description

Craftmetry turns construction sizing tables and everyday jobsite math into fast, practical field tools for contractors, tradespeople, and serious DIYers. TOOLS INCLUDED Stair Calculator Calculate risers, treads, stair count, total rise, and layout. Review a detailed stringer-cut diagram and save named calculations. Square-Up Calculator Use the Pythagorean theorem to find a diagonal or missing side for square layouts and right triangles. Gas Line Sizing Quick-size natural gas and propane lines, or build a visual piping system with appliances, BTU loads, pipe lengths, and longest-length sizing guidance. Waterline Sizing Estimate PEX-A supply sizing from fixture demand or direct flow, and lay out separate hot and cold systems. Deck Joist Sizing Check common deck-joist sizing based on span, spacing, species, grade, and loading assumptions. Voltage Drop & Wire Size Estimate voltage drop or find a wire size that satisfies selected voltage-drop and ampacity limits. Save supported calculations and layouts on your device. Account sign-in can sync supported saved work and subscription access across Craftmetry on iPhone, iPad, and the web. Sign in to use web access, sync, or the account preview. Craftmetry provides reference calculations, not engineering or code-compliance approval. Always verify final designs with local codes, manufacturer specifications, and qualified professionals when required. Terms of Use (EULA): https://craftmetry.corvora.app/terms Privacy Policy: https://craftmetry.corvora.app/privacy

Screenshots

Stair Calculator3 screens
Craftmetry4 screens

Verdict

The call

The clearest difference is rating: Craftmetry at 5.0 against Stair Calculator's 4.1. Craftmetry also leads on update cadence (every 11 days vs every 3 months). Stair Calculator's advantage is ratings volume (738 vs 2) and iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and monetization model 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. Stair Calculator sells 2 in-app purchases, starting at $9.99 per year and Craftmetry sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Craftmetry holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Stair Calculator has 738 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Stair Calculator ships an update every 3 months, Craftmetry every 11 days. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
Stair Calculator versus Craftmetry: the parameters behind the verdict, then further details
ParameterStair CalculatorCraftmetry
PriceFreeFree
Rating4.1 (738 ratings)5.0 (2 ratings) — better
Positive reviews21.4% of reviews—
Number of ratings738 — better2
Update frequencyEvery 3 monthsEvery 11 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size1 MB72 MB
Age rating4+4+
DeveloperPhan Nhat ĐangLuke Kazmierowicz

Customer experience

Stair Calculator

All ratings738 ratings
Positive77.2%
Neutral5.0%
Negative17.8%
Written reviews28 reviews
Positive21.4%
Neutral7.1%
Negative71.4%

Craftmetry

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Stair Calculator

Reported bugs

2 issues
  • Subscription numbers don't add up
  • Doesn't provide promised features after purchase

Requested features

3 requests
  • Option to uninstall app
  • Ability to calculate run based on rise and landing space
  • Provide more detailed diagrams and visuals

Craftmetry

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Stair Calculator

Subscriptions1
  • Annual Premium Package7 Days trial$9.991 Year
One-time1
  • Unlock all features$5.99
2 purchases

Craftmetry

Subscriptions2
  • Build Specs Pro7 Days trial$9.991 Month
  • Build Specs Pro7 Days trial$39.991 Year

Questions

Is Stair Calculator free?
Stair Calculator is free to download, with in-app purchases available.
Is Craftmetry free?
Craftmetry is free to download, with in-app purchases available.
Which has better reviews, Stair Calculator or Craftmetry?
Craftmetry is rated higher. Stair Calculator averages 4.1 out of 5 from 738 ratings, while Craftmetry averages 5.0 from 2 ratings.
Do Stair Calculator or Craftmetry have ads?
Neither Stair Calculator nor Craftmetry shows ads.
Which is updated more often, Stair Calculator or Craftmetry?
Stair Calculator ships an update every 3 months, and Craftmetry every 11 days. Most recently, Stair Calculator was updated on October 11, 2026 and Craftmetry on October 9, 2026.

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