# TDCA vs Chippy Tools

The clearest difference is review sentiment: Chippy Tools at 55% against TDCA's 0%. Chippy Tools also leads on rating (4.5 vs 2.0) and update cadence (every 8 days vs every 2 months). TDCA's advantage is in-app purchases (none vs 10) and iOS requirement (7.0 vs 16.0). 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. TDCA asks for nothing beyond the download.

Chippy Tools holds the better App Store score, 4.5 against 2.0. That said, the two scores are not equally well evidenced: Chippy Tools has 907 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of TDCA's written reviews are positive against 55% of Chippy Tools's.

TDCA ships an update every 2 months, Chippy Tools every 8 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | TDCA | Chippy Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/tdca/id640086167/reviews) | **[4.5 (907 ratings)](https://appshunter.io/ios/app/chippy-tools-construction/id1579138717/reviews)** |
| Number of ratings | 1 | **907** |
| Positive reviews | 0.0% of reviews | **54.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | **Free** | Freemium |
| Size | 7 MB | 46 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AVIA](https://appshunter.io/developer/390606207) | [Peth Pty Ltd](https://appshunter.io/developer/662891650) |

## What reviewers say

### TDCA

[App page](https://appshunter.io/ios/app/tdca/id640086167)

Easily estimate the materials needed for decks, terraces, or docks. Select timber types and deck shapes to get a material quantity estimate. Includes inspirational photos and an FAQ section.

**Highlights:** Material quantity estimation, Timber type selection, Deck shape selection, Email material lists, Inspirational construction photos, FAQ section

**Features:** 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 TDCA free?

TDCA 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, TDCA or Chippy Tools?

Chippy Tools is rated higher. TDCA averages 2.0 out of 5 from 1 ratings, while Chippy Tools averages 4.5 from 907 ratings.

### Do TDCA or Chippy Tools have ads?

Neither TDCA nor Chippy Tools shows ads.

### Which is updated more often, TDCA or Chippy Tools?

TDCA ships an update every 2 months, and Chippy Tools every 8 days. Most recently, TDCA was updated on November 1, 2026 and Chippy Tools on November 3, 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.*