# Stair Help vs RedX Decks

The clearest difference is price: RedX Decks at Free against Stair Help's $1.99. RedX Decks also leads on update cadence (every 10 days vs every 8 months). Stair Help's advantage is in-app purchases (none vs 10) and rating (4.6 vs 4.3). On review sentiment, ratings volume, ads and device support there is nothing between them.

RedX Decks is free to download; Stair Help costs $1.99 up front. RedX Decks sells 9 in-app purchases, starting at $6.99 per month. Stair Help asks for nothing beyond the download.

Stair Help holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 239 and 521 respectively. Written reviews complicate that: 25% of Stair Help's written reviews are positive against 31% of RedX Decks's, so the app with the better star average is not the one people write more warmly about.

Stair Help ships an update every 8 months, RedX Decks every 10 days. The most recent releases landed on September 23, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Stair Help | RedX Decks |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.6 (239 ratings)](https://appshunter.io/ios/app/stair-help/id1029967951/reviews)** | [4.3 (521 ratings)](https://appshunter.io/ios/app/redx-decks-3d-deck-builder/id6474487367/reviews) |
| Number of ratings | 239 | **521** |
| Positive reviews | 25.0% of reviews | **30.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 177 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Armchair Engineering](https://appshunter.io/developer/398901339) | [RedX Technology Inc](https://appshunter.io/developer/835492291) |

## What reviewers say

### Stair Help

[App page](https://appshunter.io/ios/app/stair-help/id1029967951)

This application simplifies staircase construction by accurately calculating essential measurements like riser, going, and stringer lengths. It offers customizable units, riser height, and precision settings for fractions and decimal places.

**Highlights:** Calculate riser, going, stringer, and base lengths, Set preferred units (mm, cm, inches), Adjustable max riser height, Set preferred decimal places, Set fraction of an inch precision

**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 Stair Help free?

Stair Help costs $1.99, with no in-app purchases.

### Is RedX Decks free?

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

### Which has better reviews, Stair Help or RedX Decks?

Stair Help is rated higher. Stair Help averages 4.6 out of 5 from 239 ratings, while RedX Decks averages 4.3 from 521 ratings.

### Do Stair Help or RedX Decks have ads?

Neither Stair Help nor RedX Decks shows ads.

### Which is updated more often, Stair Help or RedX Decks?

Stair Help ships an update every 8 months, and RedX Decks every 10 days. Most recently, Stair Help was updated on September 23, 2026 and RedX Decks on September 30, 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.*