# Stair and Angle Calculator vs Chippy Tools

The clearest difference is price: Chippy Tools at Free against Stair and Angle Calculator's $0.99. Chippy Tools also leads on update cadence (every 8 days vs every 4 months). Stair and Angle Calculator's advantage is in-app purchases (none vs 10). On ads, device support and iOS requirement there is nothing between them.

Chippy Tools is free to download; Stair and Angle Calculator costs $0.99 up front. Chippy Tools sells 9 in-app purchases, starting at $2.99 per 7 days. Stair and Angle Calculator asks for nothing beyond the download.

Stair and Angle Calculator ships an update every 4 months, Chippy Tools every 8 days. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Stair and Angle Calculator | Chippy Tools |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.5 (907 ratings)](https://appshunter.io/ios/app/chippy-tools-construction/id1579138717/reviews)** |
| Number of ratings | — | **907** |
| Positive reviews | — | 54.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 8 days** |
| Monetization | — | Freemium |
| Size | 2 MB | 46 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Paul Simmonds](https://appshunter.io/developer/1068604965) | [Peth Pty Ltd](https://appshunter.io/developer/662891650) |

## What reviewers say

### Stair and Angle Calculator

[App page](https://appshunter.io/ios/app/stair-and-angle-calculator/id1073382196)

**Features:** macOS Compatibility, Vision Pro support

**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 Stair and Angle Calculator free?

Stair and Angle Calculator costs $0.99, with no in-app purchases.

### Is Chippy Tools free?

Chippy Tools is free to download, with in-app purchases available.

### Do Stair and Angle Calculator or Chippy Tools have ads?

Neither Stair and Angle Calculator nor Chippy Tools shows ads.

### Which is updated more often, Stair and Angle Calculator or Chippy Tools?

Stair and Angle Calculator ships an update every 4 months, and Chippy Tools every 8 days. Most recently, Stair and Angle Calculator was updated on November 6, 2026 and Chippy Tools on November 7, 2026.

---

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