Comparison

Stair Stringer vs Chippy Tools

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
Currently charting
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

Chippy Tools

This app simplifies complex calculations for construction professionals. It offers a variety of tools for tasks like spacing, measurements, and material estimation, helping to reduce errors and save time on job sites. Available on iPhone and iPad, it aims to be an essential tool for tradespeople.

Highlights
  • Baluster spacing calculator
  • Flat run attached baluster calculator
  • Square calculator
  • Concrete calculator
  • Stair calculator
  • Supports millimeters, feet, and inches
Features
Read full description

Chippy Tools is the must-have calculator for carpenters and handy folks looking to simplify math on the job. Whether you're on your iPhone or iPad, Chippy Tools is for you. Its user-friendly design lets you focus on carpentry while the app handles the math. Perfect for architects, builders, carpenters, construction workers, contractors, designers, engineers, tradespeople, and woodworkers of all kinds, Chippy Tools speeds up common calculations with precision. Save time and cut costs by reducing site errors. WHAT IS A CHIPPY? In Australia, carpenters are often called Chippy. WHY CHIPPY TOOLS? Our mission at Chippy Tools is to redefine top-notch apps for carpenters. We aim to develop a sustainable business model, adding new calculations to keep saving you time and money. FEATURES • Baluster spacing calculator - Quickly calculate spacing for flat runs. • Flat run attached baluster calculator - Simple, fast calculations for attached balusters. • Supports millimeters, feet, and inches. PREMIUM FEATURES (Requires Subscription) • Square calculator - Ensure structures are perfectly square. • Concrete calculator - Calculate concrete needed for slabs and posts. • Dumpy level calculator - Find relative level from benchmarks. • Equal spacing calculator - Calculate even spacing effortlessly. • Gravel calculator - Determine gravel volume needed. • Pitch calculator - Calculate pitch with rise and run. • Raked wall calculator - Measure raked walls using height or pitch. • Running calculations - Enter start number and interval. • Soil calculator - Find soil volume for landscaping. • Stair calculator - Calculate going, stringer, and rise for stairs. • Triangle calculator - Solve triangle measurements with ease. FEEDBACK Want a new calculator? Email us at feedback@chippy.tools. NO ADS EVER We promise no ads in Chippy Tools. Enjoy the best experience for your purchase. SUPPORT Got questions or feedback? Contact us for free tech support at support@chippy.tools. If Chippy Tools aids you, please leave an App Store review to help others find it. Subscription Terms of Service: https://chippy.tools/terms/ Proudly made in Brisbane, Australia.

Screenshots

Stair Stringer4 screens
Chippy Tools4 screens

Verdict

The call

The clearest difference is price: Chippy Tools at Free against Stair Stringer's $1.99. Chippy Tools also leads on update cadence (every 8 days vs every 5 weeks) and ratings volume (905 vs 86). Stair Stringer's advantage is in-app purchases (none vs 10) and rating (4.7 vs 4.5). On 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

Chippy Tools is free to download; Stair Stringer costs $1.99 up front. Chippy Tools sells 9 in-app purchases, starting at $2.99 per 7 days. Stair Stringer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Stair Stringer holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Chippy Tools has 905 ratings behind it against 86, so its average is the more settled of the two. Written reviews point the same way: 67% of Stair Stringer's written reviews are positive against 55% of Chippy Tools's.

UpkeepUpdate frequency

Stair Stringer ships an update every 5 weeks, Chippy Tools every 8 days. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

Scorecard9 real differences · 2 level
Stair Stringer versus Chippy Tools: the parameters behind the verdict, then further details
ParameterStair StringerChippy Tools
Price$1.99Free — better
Rating4.7 (86 ratings) — better4.5 (905 ratings)
Positive reviews66.7% of reviews — better55.2% of reviews
Number of ratings86905 — better
Update frequencyEvery 5 weeksEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
Best chart rank#126 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better16.0
Further details — not scored
Size2 MB46 MB
Age rating4+4+
DeveloperH3 Apps, LLCPeth Pty Ltd

Customer experience

Stair Stringer

All ratings86 ratings
Positive91.9%
Neutral4.7%
Negative3.5%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Chippy Tools

All ratings905 ratings
Positive88.6%
Neutral3.0%
Negative8.4%
Written reviews58 reviews
Positive55.2%
Neutral5.2%
Negative39.7%

Bugs and requests

Stair Stringer

Not enough reviews yet to summarise bugs or requests.

Chippy Tools

Reported bugs

2 issues
  • Square check feature not working
  • Measurements disappear after partial use

Requested features

4 requests
  • Add more construction-related calculators
  • Improve stair and rafter tools
  • Include material quantity estimations
  • Add support for metric and imperial units

In-app purchases

None

Stair Stringer

No in-app purchases

9 purchases

Chippy Tools

Subscriptions8
  • Chippy Tools Pro - Weekly1 Month trial$2.997 Days
  • Chippy Tools Pro - Weekly3 Days trial$3.997 Days
  • Chippy Tools Pro - Quarterly3 Months trial$4.993 Months
Show 5 more
  • Chippy Tools Pro - Monthly$5.991 Month
  • Chippy Tools Pro - Monthly1 Month trial$5.991 Month
  • Chippy Tools Pro - Annual3 Days trial$19.991 Year
  • Chippy Tools Pro - Annual1 Year trial$19.991 Year
  • Chippy Tools Pro - Annual$19.991 Year
One-time1
  • One Time Purchase2 variants$85.00

Questions

Is Stair Stringer free?
Stair Stringer costs $1.99, with no in-app purchases.
Is Chippy Tools free?
Chippy Tools is free to download, with in-app purchases available.
Which has better reviews, Stair Stringer or Chippy Tools?
Stair Stringer is rated higher. Stair Stringer averages 4.7 out of 5 from 86 ratings, while Chippy Tools averages 4.5 from 905 ratings.
Do Stair Stringer or Chippy Tools have ads?
Neither Stair Stringer nor Chippy Tools shows ads.
Which is updated more often, Stair Stringer or Chippy Tools?
Stair Stringer ships an update every 5 weeks, and Chippy Tools every 8 days. Most recently, Stair Stringer was updated on September 23, 2026 and Chippy Tools on September 24, 2026.

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