# Tracker DFU vs Box Fill Calc NEC

The clearest difference is price: Tracker DFU at Free against Box Fill Calc NEC's $0.99. Tracker DFU also leads on in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Tracker DFU is free to download; Box Fill Calc NEC costs $0.99 up front. Box Fill Calc NEC sells 1 one-off in-app purchase. Tracker DFU asks for nothing beyond the download.

## The numbers

| Metric | Tracker DFU | Box Fill Calc NEC |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/box-fill-calc-nec/id6763313013/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 days |
| Monetization | — | Free with in-app purchases |
| Size | 22 MB | 34 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Moko Technology Ltd](https://appshunter.io/developer/1242868347) | [Rizvan Adzhoian](https://appshunter.io/developer/1891746079) |

## What reviewers say

### Tracker DFU

[App page](https://appshunter.io/ios/app/tracker-dfu/id1526088114)

**Features:** macOS Compatibility

**In-app purchases:** none


### Box Fill Calc NEC

[App page](https://appshunter.io/ios/app/box-fill-calc-nec/id6763313013)

Instantly calculate electrical box fill volumes using official NEC 2023 data. This offline tool helps electricians and apprentices determine box capacity for conductors, clamps, and devices, providing a clear pass/fail indicator and suggesting appropriate box sizes.

**Highlights:** NEC 2023 Article 314.16 data, Offline functionality, Standard and custom box sizes, Conductor and clamp volume calculation, Multi-gang device fill, Equipment grounding conductor calculation, Visual PASS/FAIL indicator

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $2.99 | one-time |


## Frequently asked questions

### Is Tracker DFU free?

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

### Is Box Fill Calc NEC free?

Box Fill Calc NEC costs $0.99, and also offers in-app purchases.

### Do Tracker DFU or Box Fill Calc NEC have ads?

Box Fill Calc NEC shows ads; Tracker DFU does not.

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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.*