Comparison

Castrol 2TRatio 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

Castrol 2TRatio

Easily calculate the precise oil-to-fuel ratio for your 2-stroke engines. This tool is perfect for motorcycles, boats, lawnmowers, and garden equipment, ensuring you use the correct mix as recommended by manufacturers.

Highlights
  • Calculate oil-to-fuel ratio
  • Supports motorcycles, outboards, lawnmowers
  • Adjustable fuel slider
  • Adjustable ratio slider
  • Metric/Imperial measurement switch
  • Link to Castrol Lube guide
Features
Read full description

Castrol 2TRatio Two Stroke Oil Ratio Selector calculates the oil to fuel ratio for 2 stroke engines With this handy application, you can quickly and easily calculate the Castrol 2-stroke oil to fuel ratio needed for your 2 stroke engines. Applicable for motorcycles, outboard motors, lawnmowers and garden equipment, this calculator determines the amount of oil to add to the fuel required based on the ratio as suggested by the engine manufacturer. To determine the oil required for the fuel needed, simply use the fuel slider to display the amount of fuel needed and use the Ratio Selector slider for the oil to fuel ratio. The Oil required is instantly displayed for the exact fuel to oil mix. Under settings, there is a switch between metric or Imperial measurements and a link to the Castrol Lube guide so you can check what oil is right for your engine.

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

Castrol 2TRatio4 screens
Chippy Tools4 screens

Verdict

The call

The clearest difference is rating: Chippy Tools at 4.5 against Castrol 2TRatio's 3.0. Chippy Tools also leads on update cadence (every 8 days vs every 58 months) and ratings volume (905 vs 4). Castrol 2TRatio's advantage is in-app purchases (none vs 10) and review sentiment (76% vs 55%). On price, 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

Both are free to download. Chippy Tools sells 9 in-app purchases, starting at $2.99 per 7 days. Castrol 2TRatio asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Chippy Tools holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Chippy Tools has 905 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 76% of Castrol 2TRatio's written reviews are positive against 55% of Chippy Tools's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Castrol 2TRatio ships an update every 58 months, Chippy Tools every 8 days. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

Scorecard7 real differences · 3 level
Castrol 2TRatio versus Chippy Tools: the parameters behind the verdict, then further details
ParameterCastrol 2TRatioChippy Tools
PriceFreeFree
Rating3.0 (4 ratings)4.5 (905 ratings) — better
Positive reviews75.8% of reviews — better55.2% of reviews
Number of ratings4905 — better
Update frequencyEvery 58 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPodiPhone, iPad
Requires iOS10.0 — better16.0
Further details — not scored
Size15 MB46 MB
Age rating4+4+
DeveloperCastrol Australia Pty LtdPeth Pty Ltd

Customer experience

Castrol 2TRatio

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews33 reviews
Positive75.8%
Neutral3.0%
Negative21.2%

Chippy Tools

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

Bugs and requests

Castrol 2TRatio

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

Castrol 2TRatio

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 Castrol 2TRatio free?
Castrol 2TRatio is free to download, with no in-app purchases.
Is Chippy Tools free?
Chippy Tools is free to download, with in-app purchases available.
Which has better reviews, Castrol 2TRatio or Chippy Tools?
Chippy Tools is rated higher. Castrol 2TRatio averages 3.0 out of 5 from 4 ratings, while Chippy Tools averages 4.5 from 905 ratings.
Do Castrol 2TRatio or Chippy Tools have ads?
Neither Castrol 2TRatio nor Chippy Tools shows ads.
Which is updated more often, Castrol 2TRatio or Chippy Tools?
Castrol 2TRatio ships an update every 58 months, and Chippy Tools every 8 days. Most recently, Castrol 2TRatio was updated on October 7, 2026 and Chippy Tools on October 16, 2026.

Other comparisons