# Stair Stringer vs Chippy Tools

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.

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.

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.

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.

## The numbers

| Metric | Stair Stringer | Chippy Tools |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (86 ratings)](https://appshunter.io/ios/app/stair-stringer/id1550828339/reviews)** | [4.5 (905 ratings)](https://appshunter.io/ios/app/chippy-tools-construction/id1579138717/reviews) |
| Number of ratings | 86 | **905** |
| Positive reviews | **66.7% of reviews** | 55.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 8 days** |
| Monetization | Paid | **Freemium** |
| Best chart rank | **#126** | — |
| Size | 2 MB | 46 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [H3 Apps, LLC](https://appshunter.io/developer/598620927) | [Peth Pty Ltd](https://appshunter.io/developer/662891650) |

## What reviewers say

### Stair Stringer

[App page](https://appshunter.io/ios/app/stair-stringer/id1550828339)

**Currently charting:** #126 Top Paid · Utilities (US App Store)

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