# SecondFloor vs Chief As

The clearest difference is rating: SecondFloor at 4.3 against Chief As's 3.6. SecondFloor also leads on update cadence (fortnightly vs every 6 weeks) and ratings volume (16 vs 5). Chief As's advantage is in-app purchases (none vs 4). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SecondFloor sells 4 in-app purchases, starting at $24.99 per 7 days. Chief As asks for nothing beyond the download.

SecondFloor holds the better App Store score, 4.3 against 3.6. Both are backed by a comparable volume of ratings — 16 and 5 respectively.

SecondFloor ships an update fortnightly, Chief As every 6 weeks. The most recent releases landed on October 5, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SecondFloor | Chief As |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (16 ratings)](https://appshunter.io/ios/app/secondfloor/id1637189748/reviews)** | [3.6 (5 ratings)](https://appshunter.io/ios/app/chief-as-built/id6752957994/reviews) |
| Number of ratings | **16** | 5 |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Subscription | **Free** |
| Size | 120 MB | 156 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Right Home Media Inc.](https://appshunter.io/developer/1637189750) | [Chief Architect](https://appshunter.io/developer/520677645) |

## What reviewers say

### SecondFloor

[App page](https://appshunter.io/ios/app/secondfloor/id1637189748)

Instantly create detailed floor plans by scanning interiors with LiDAR. AI automatically detects walls, windows, and doors, with real-time feedback and easy on-device editing. Share finished plans directly from the app.

**Highlights:** Instant floor plans with LiDAR, AI detection of walls, windows, doors, Real-time scanning feedback, On-device editing, Built-in sharing, GLA Square Footage/Meters, Custom room labels

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $24.99 | per 7 days |
| Monthly Subscription | $49.99 | per month |
| Yearly Subscription | $249.99 | per year |
| Day Pass | $9.99 | one-time |


### Chief As

[App page](https://appshunter.io/ios/app/chief-as-built/id6752957994)

Easily capture 3D floor plans of rooms using your iPhone or iPad's LiDAR scanner. Edit and import these models directly into desktop design software for remodeling projects. Streamline documentation of existing spaces and client collaboration.

**Highlights:** 3D floor plan capture via LiDAR, In-app 3D model editing, Import to Chief Architect desktop software, Client room scanning capability, Precise measurement tools, Cloud sharing

**In-app purchases:** none


## Frequently asked questions

### Is SecondFloor free?

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

### Is Chief As free?

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

### Which has better reviews, SecondFloor or Chief As?

SecondFloor is rated higher. SecondFloor averages 4.3 out of 5 from 16 ratings, while Chief As averages 3.6 from 5 ratings.

### Do SecondFloor or Chief As have ads?

Neither SecondFloor nor Chief As shows ads.

### Which is updated more often, SecondFloor or Chief As?

SecondFloor ships an update fortnightly, and Chief As every 6 weeks. Most recently, SecondFloor was updated on October 5, 2026 and Chief As on September 29, 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.*