Comparison

Deck Help vs Stair Calculator 2

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

Head to head
About

Deck Help

Calculate decking material needs, including timber lengths and set outs for bearers and joists. Supports various measurement units and decimal place preferences for precise calculations.

Highlights
  • Calculate bearer and joist lengths
  • Determine stump, bearer, joist, and board set outs
  • Supports mm, cm, inches, and feet
  • Select preferred decimal places
  • Accurately solve deck equations
Features
Read full description

Deck Help is the easiest way to calculate decking material requirements, timber lengths and associated values when building! Quickly find bearer and joist lengths, as well as stump, bearer, joist and board set outs for a given deck width and length. Features Include: - Accurately solve deck equations - Enter lengths in mm, cm, inches or feet - Select your preferred number of decimal places

About

Stair Calculator 2

Features
Read full description

Stair Calculator 2 is a fast, easy way to create a schedule of stair calculations for any size of job or just to perform a single calculation on the fly. Put your pencil down and start making professional, consistent calculations today. - Universal app allows use on both iPad, Mac and iPhone/iPod with single purchase. - Create an unlimited list of calculations that automatically save. - Solve rise, run, incline, headroom, stringer length, throat and more. - Calculate baluster spacing using the built-in spacing utility. - View a detailed diagram of the stairwell or the stringer that is to scale and zoomable. - Print directly from the app or save to your camera roll. - Change font size, arrow size, line width, and more to customize your drawing. - Work in either imperial or metric. - Built in construction calculator allows intermediate calculations to be performed within the app.

Screenshots

Deck Help4 screens
Stair Calculator 24 screens

Verdict

The call

The clearest difference is update cadence: Deck Help at every 4 months against Stair Calculator 2's every 26 months. Deck Help also leads on price ($2.99 vs $6.99) and device support (4 vs 2). On ads and in-app purchases 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

Deck Help costs $2.99 and Stair Calculator 2 $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Deck Help ships an update every 4 months, Stair Calculator 2 every 26 months. The most recent releases landed on October 10, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
Deck Help versus Stair Calculator 2: the parameters behind the verdict, then further details
ParameterDeck HelpStair Calculator 2
Price$2.99 — better$6.99
Rating3.8 (23 ratings) — better—
Positive reviews14.3% of reviews—
Number of ratings23 — better—
Update frequencyEvery 4 months — betterEvery 26 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS10.0 — better17.5
Further details — not scored
Size20 MB15 MB
Age rating4+4+
DeveloperArmchair EngineeringSnappy Appz Inc.

In-app purchases

None

Deck Help

No in-app purchases

None

Stair Calculator 2

No in-app purchases

Questions

Is Deck Help free?
Deck Help costs $2.99, with no in-app purchases.
Is Stair Calculator 2 free?
Stair Calculator 2 costs $6.99, with no in-app purchases.
Do Deck Help or Stair Calculator 2 have ads?
Neither Deck Help nor Stair Calculator 2 shows ads.
Which is updated more often, Deck Help or Stair Calculator 2?
Deck Help ships an update every 4 months, and Stair Calculator 2 every 26 months. Most recently, Deck Help was updated on October 10, 2026 and Stair Calculator 2 on October 5, 2026.

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