Comparison

Stair Stringer 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

Stair Stringer

This app calculates all necessary measurements for building a stair stringer, including risers, run, angle, and length. Easily adjust parameters and switch between Imperial and Metric units. Share your calculated results via email or text.

Highlights
  • Calculates stair risers and run
  • Determines stair angle and stringer length
  • Calculates step height and tread depth
  • Determines the number of steps
  • Adjustable parameters
  • Imperial or Metric units
  • Share results via email/text
Features
Read full description

This App is used for finding the measurements needed to construct a Stair Stringer. It calculates stair risers and run, stair angle, stringer length, step height, tread depth, and the number of steps required for a given run of stairs.  Easy to adjust parameters to customize and fit your requirements. Inputs and Results can be Imperial or Metric. The calculated results can be emailed or texted as needed.

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

Stair Stringer4 screens
Stair Calculator 24 screens

Verdict

The call

The clearest difference is update cadence: Stair Stringer at every 5 weeks against Stair Calculator 2's every 26 months. Stair Stringer also leads on price ($1.99 vs $6.99) and iOS requirement (14.0 vs 17.5). On ads, in-app purchases 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

Stair Stringer costs $1.99 and Stair Calculator 2 $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Stair Stringer ships an update every 5 weeks, Stair Calculator 2 every 26 months. Both last shipped on November 3, 2026.

Scorecard3 real differences · 7 level
Stair Stringer versus Stair Calculator 2: the parameters behind the verdict, then further details
ParameterStair StringerStair Calculator 2
Price$1.99 — better$6.99
Rating4.7 (87 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings87 — better—
Update frequencyEvery 5 weeks — betterEvery 26 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better17.5
Further details — not scored
Size2 MB15 MB
Age rating4+4+
DeveloperH3Apps LLCSnappy Appz Inc.

In-app purchases

None

Stair Stringer

No in-app purchases

None

Stair Calculator 2

No in-app purchases

Questions

Is Stair Stringer free?
Stair Stringer costs $1.99, with no in-app purchases.
Is Stair Calculator 2 free?
Stair Calculator 2 costs $6.99, with no in-app purchases.
Do Stair Stringer or Stair Calculator 2 have ads?
Neither Stair Stringer nor Stair Calculator 2 shows ads.
Which is updated more often, Stair Stringer or Stair Calculator 2?
Stair Stringer ships an update every 5 weeks, and Stair Calculator 2 every 26 months. Most recently, Stair Stringer was updated on November 3, 2026 and Stair Calculator 2 on November 3, 2026.

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