# Fonn Construction vs CURB deviation

Fonn Construction and CURB deviation are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Fonn Construction ships an update fortnightly, CURB deviation every 3 weeks. The most recent releases landed on September 18, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Fonn Construction | CURB deviation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/fonn-construction/id1229059264/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 129 MB | 16 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fonn AS](https://appshunter.io/developer/1229059263) | [CoPro Live AS](https://appshunter.io/developer/788462775) |

## What reviewers say

### Fonn Construction

[App page](https://appshunter.io/ios/app/fonn-construction/id1229059264)

Streamline construction projects with this field tool designed for contractors and project managers. It enhances efficiency, reduces errors, and facilitates clear communication among team members, all at a competitive cost.

**Highlights:** User-friendly interface, Unlimited users and subscriptions, Monitored sub-to-sub communication, Audit trails and liability protection, Real-time drawing access, Unlimited data storage, Photo and drawing markups

**Features:** Vision Pro support

**In-app purchases:** none


### CURB deviation

[App page](https://appshunter.io/ios/app/curb-deviation/id1362532396)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fonn Construction free?

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

### Is CURB deviation free?

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

### Do Fonn Construction or CURB deviation have ads?

Neither Fonn Construction nor CURB deviation shows ads.

### Which is updated more often, Fonn Construction or CURB deviation?

Fonn Construction ships an update fortnightly, and CURB deviation every 3 weeks. Most recently, Fonn Construction was updated on September 18, 2026 and CURB deviation on September 19, 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.*