# eFieldDATA vs D2DHQ Knocker

The clearest difference is update cadence: D2DHQ Knocker at every 2 days against eFieldDATA's monthly. eFieldDATA's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 26.0). On price, ads and in-app purchases there is nothing between them.

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

eFieldDATA ships an update monthly, D2DHQ Knocker every 2 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | eFieldDATA | D2DHQ Knocker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (17 ratings)](https://appshunter.io/ios/app/efielddata/id1315700444/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free | — |
| Size | 59 MB | 39 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Vconnex Services, Inc](https://appshunter.io/developer/1062047457) | [Rodney Boatner](https://appshunter.io/developer/1896134422) |

## What reviewers say

### eFieldDATA

[App page](https://appshunter.io/ios/app/efielddata/id1315700444)

Streamline field data collection and lab management for construction materials testing and geotechnical services. Generate industry-standard reports on the go, ensuring compliance and efficiency.

**Highlights:** On-the-go field data collection, Lab management, Industry standard reporting (ASTM & AASHTO), Construction Materials Testing (CMT), Geotechnical Engineering, Inspection Services

**In-app purchases:** none


### D2DHQ Knocker

[App page](https://appshunter.io/ios/app/d2dhq-knocker/id6765944100)

**In-app purchases:** none


## Frequently asked questions

### Is eFieldDATA free?

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

### Is D2DHQ Knocker free?

D2DHQ Knocker is free to download, with no in-app purchases.

### Do eFieldDATA or D2DHQ Knocker have ads?

Neither eFieldDATA nor D2DHQ Knocker shows ads.

### Which is updated more often, eFieldDATA or D2DHQ Knocker?

eFieldDATA ships an update monthly, and D2DHQ Knocker every 2 days. Most recently, eFieldDATA was updated on November 2, 2026 and D2DHQ Knocker on October 31, 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.*