Comparison

Chippy Tools vs Engine Builder Pro

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

Head to head
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.

About

Engine Builder Pro

Features
Read full description

Engine Builder Pro brings engine build records and practical workshop calculators together in one place. Create detailed customer build sheets, store measurements and component specifications, attach build photos, generate PDF reports and keep portable backups. Calculators can use values from the current job, reducing repeated entry and helping keep calculations connected to the build being assembled. Workshop tools include: • Static and dynamic compression calculations • Target compression and engine stack-up solving • Piston-to-valve clearance visualisation • Cam degree and valve-train setup tools • Carburettor sizing with camshaft inputs • Ring-gap, rod-ratio, head-porting and measurement calculators • Job-linked build checks and missing-input guidance • PDF build sheets, photos and portable backups Cam-card details are entered manually, keeping the recorded figures under the builder's direct control. Engine Builder Pro is intended as a recordkeeping and calculation aid for knowledgeable engine builders. Users remain responsible for checking measurements, inputs, component instructions and final assembly decisions.

Screenshots

Chippy Tools4 screens
Engine Builder Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Engine Builder Pro at none against Chippy Tools's 10. Engine Builder Pro also leads on update cadence (every 2 days vs every 8 days). On price, ads, device support and iOS requirement 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. Chippy Tools sells 9 in-app purchases, starting at $2.99 per 7 days. Engine Builder Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Chippy Tools ships an update every 8 days, Engine Builder Pro every 2 days. The most recent releases landed on October 30, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 8 level
Chippy Tools versus Engine Builder Pro: the parameters behind the verdict, then further details
ParameterChippy ToolsEngine Builder Pro
PriceFreeFree
Rating4.5 (907 ratings) — better—
Positive reviews55.2% of reviews—
Number of ratings907 — better—
Update frequencyEvery 8 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size46 MB22 MB
Age rating4+4+
DeveloperPeth Pty LtdGemma Beames

Bugs and 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

Engine Builder Pro

Not enough reviews yet to summarise bugs or requests.

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
None

Engine Builder Pro

No in-app purchases

Questions

Is Chippy Tools free?
Chippy Tools is free to download, with in-app purchases available.
Is Engine Builder Pro free?
Engine Builder Pro is free to download, with no in-app purchases.
Do Chippy Tools or Engine Builder Pro have ads?
Neither Chippy Tools nor Engine Builder Pro shows ads.
Which is updated more often, Chippy Tools or Engine Builder Pro?
Chippy Tools ships an update every 8 days, and Engine Builder Pro every 2 days. Most recently, Chippy Tools was updated on October 30, 2026 and Engine Builder Pro on October 5, 2026.

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