# Castrol 2TRatio vs Chippy Tools

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.

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.

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.

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.

## The numbers

| Metric | Castrol 2TRatio | Chippy Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/castrol-2tratio/id812548191/reviews) | **[4.5 (905 ratings)](https://appshunter.io/ios/app/chippy-tools-construction/id1579138717/reviews)** |
| Number of ratings | 4 | **905** |
| Positive reviews | **75.8% of reviews** | 55.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 58 months | **Every 8 days** |
| Monetization | **Free** | Freemium |
| Size | 15 MB | 46 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Castrol Australia Pty Ltd](https://appshunter.io/developer/812548194) | [Peth Pty Ltd](https://appshunter.io/developer/662891650) |

## What reviewers say

### Castrol 2TRatio

[App page](https://appshunter.io/ios/app/castrol-2tratio/id812548191)

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:** macOS Compatibility

**In-app purchases:** none


### Chippy Tools

[App page](https://appshunter.io/ios/app/chippy-tools-construction/id1579138717)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chippy Tools Pro - Weekly | $2.99 | per 7 days |
| Chippy Tools Pro - Weekly | $3.99 | per 7 days |
| Chippy Tools Pro - Quarterly | $4.99 | per 3 months |
| Chippy Tools Pro - Monthly | $5.99 | per month |
| Chippy Tools Pro - Monthly | $5.99 | per month |
| Chippy Tools Pro - Annual | $19.99 | per year |
| Chippy Tools Pro - Annual | $19.99 | per year |
| Chippy Tools Pro - Annual | $19.99 | per year |
| One Time Purchase | $85.00 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick and efficient
- 💡 Useful construction tools
- 🙌 Great for DIY projects

**What reviewers complain about**

- 🤔 Confusing interface
- 💰 Expensive subscription
- 🐛 Inaccurate calculations
- 🔒 Difficult to cancel subscription

**Reported bugs**

- Square check feature not working
- Measurements disappear after partial use

**Requested features**

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


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*