# TDCA vs RedX Decks

The clearest difference is rating: RedX Decks at 4.3 against TDCA's 2.0. RedX Decks also leads on review sentiment (31% vs 0%) and update cadence (every 10 days vs every 2 months). TDCA's advantage is in-app purchases (none vs 10) and iOS requirement (7.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. RedX Decks sells 9 in-app purchases, starting at $6.99 per month. TDCA asks for nothing beyond the download.

RedX Decks holds the better App Store score, 4.3 against 2.0. That said, the two scores are not equally well evidenced: RedX Decks has 521 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 31% of RedX Decks's.

TDCA ships an update every 2 months, RedX Decks every 10 days. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | TDCA | RedX Decks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/tdca/id640086167/reviews) | **[4.3 (521 ratings)](https://appshunter.io/ios/app/redx-decks-3d-deck-builder/id6474487367/reviews)** |
| Number of ratings | 1 | **521** |
| Positive reviews | 0.0% of reviews | **30.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 177 MB |
| Requires iOS | **7.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AVIA](https://appshunter.io/developer/390606207) | [RedX Technology Inc](https://appshunter.io/developer/835492291) |

## 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


### RedX Decks

[App page](https://appshunter.io/ios/app/redx-decks-3d-deck-builder/id6474487367)

Design and visualize complex deck structures, including roofs and stairs, with automatic framing and structural calculations. Generate professional, permit-ready blueprints and detailed material lists for efficient construction.

**Highlights:** 3D deck and roof design, Automatic framing layouts, Structural calculations, Permit-ready blueprints, Material and cut lists, 3D visualization and renders

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RedX Decks Pro | $6.99 | per month |
| RedX Apps Pro++ Monthly | $9.99 | per month |
| RedX Apps Pro++ | $59.99 | per year |
| RedX Decks Pro | $59.99 | per year |
| RedX Decks Pro | $69.99 | per year |
| RedX Apps Bundle | $179.99 | per year |
| 20 Render Credits | $9.99 | one-time |
| 100 Render Credits | $29.99 | one-time |
| 200 Render Credits | $44.99 | one-time |


## Frequently asked questions

### Is TDCA free?

TDCA is free to download, with no in-app purchases.

### Is RedX Decks free?

RedX Decks is free to download, with in-app purchases available.

### Which has better reviews, TDCA or RedX Decks?

RedX Decks is rated higher. TDCA averages 2.0 out of 5 from 1 ratings, while RedX Decks averages 4.3 from 521 ratings.

### Do TDCA or RedX Decks have ads?

Neither TDCA nor RedX Decks shows ads.

### Which is updated more often, TDCA or RedX Decks?

TDCA ships an update every 2 months, and RedX Decks every 10 days. Most recently, TDCA was updated on September 22, 2026 and RedX Decks on September 21, 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.*