# Local Scale Factor vs ConcreteDNA

The clearest difference is update cadence: ConcreteDNA at fortnightly against Local Scale Factor's every 2 months. Local Scale Factor's advantage is monetization model (free vs ad-supported) and iOS requirement (10.3 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Local Scale Factor ships an update every 2 months, ConcreteDNA fortnightly. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Local Scale Factor | ConcreteDNA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/concretedna/id1457340144/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Ad-supported |
| Size | 65 MB | 34 MB |
| Requires iOS | **10.3** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NRG Surveys Ltd](https://appshunter.io/developer/1334623382) | [Converge](https://appshunter.io/developer/1457340143) |

## What reviewers say

### Local Scale Factor

[App page](https://appshunter.io/ios/app/local-scale-factor/id1353822948)

This tool calculates local scale factors and Cartesian coordinates from WGS84 GPS positions. It supports numerous local grid transformations and can convert between local postcodes and geodetic positions. It also offers map navigation to selected coordinates.

**Highlights:** Local scale factor calculation, Cartesian coordinate conversion, WGS84 GPS position input, Local grid transformations, Postcode to geodetic position conversion, Map navigation

**Features:** macOS Compatibility

**In-app purchases:** none


### ConcreteDNA

[App page](https://appshunter.io/ios/app/concretedna/id1457340144)

Monitor concrete strength and temperature in real-time with sensor data sent directly to the cloud. Access live site data from anywhere, receive instant alerts, and generate QA reports for simplified paperwork. Supports collection from Converge Signal sensors.

**Highlights:** Live concrete strength feedback, Instant action alerts, Cloud access for teams, Temperature monitoring, QA report generation, Converge Signal sensor support

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

**In-app purchases:** none


## Frequently asked questions

### Is Local Scale Factor free?

Local Scale Factor is free to download, with no in-app purchases.

### Is ConcreteDNA free?

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

### Do Local Scale Factor or ConcreteDNA have ads?

Neither Local Scale Factor nor ConcreteDNA shows ads.

### Which is updated more often, Local Scale Factor or ConcreteDNA?

Local Scale Factor ships an update every 2 months, and ConcreteDNA fortnightly. Most recently, Local Scale Factor was updated on October 10, 2026 and ConcreteDNA on October 6, 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.*