# NEC Code Studio & Tools vs FILL ◦ Conduit Fill Calculator

The clearest difference is price: FILL ◦ Conduit Fill Calculator at Free against NEC Code Studio & Tools's $2.99. FILL ◦ Conduit Fill Calculator also leads on update cadence (weekly vs monthly) and iOS requirement (15.1 vs 17.6). NEC Code Studio & Tools's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

FILL ◦ Conduit Fill Calculator is free to download; NEC Code Studio & Tools costs $2.99 up front. FILL ◦ Conduit Fill Calculator sells 1 one-off in-app purchase. NEC Code Studio & Tools asks for nothing beyond the download.

NEC Code Studio & Tools ships an update monthly, FILL ◦ Conduit Fill Calculator weekly. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NEC Code Studio & Tools | FILL ◦ Conduit Fill Calculator |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[4.3 (4 ratings)](https://appshunter.io/ios/app/fill-conduit-fill-calculator/id6760678246/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 494 MB | 39 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yuhsiu Lai](https://appshunter.io/developer/433114647) | [James McKinney](https://appshunter.io/developer/1855741871) |

## What reviewers say

### NEC Code Studio & Tools

[App page](https://appshunter.io/ios/app/nec-code-studio-and-tools/id6760605985)

**In-app purchases:** none


### FILL ◦ Conduit Fill Calculator

[App page](https://appshunter.io/ios/app/fill-conduit-fill-calculator/id6760678246)

This app calculates conduit fill percentages based on NEC 2023 standards. It helps electricians determine if wires will fit in a conduit or find the smallest suitable conduit for a given set of wires. Features include real-time status updates, history, and export options.

**Highlights:** NEC 2023 compliant calculations, Forward and reverse calculation modes, Real-time fill percentage status, Supports multiple conduit and wire types, Nipple calculation mode, Calculation history with job site grouping, Export and share results

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FILL Pro | $7.99 | one-time |


## Frequently asked questions

### Is NEC Code Studio & Tools free?

NEC Code Studio & Tools costs $2.99, with no in-app purchases.

### Is FILL ◦ Conduit Fill Calculator free?

FILL ◦ Conduit Fill Calculator is free to download, with in-app purchases available.

### Do NEC Code Studio & Tools or FILL ◦ Conduit Fill Calculator have ads?

Neither NEC Code Studio & Tools nor FILL ◦ Conduit Fill Calculator shows ads.

### Which is updated more often, NEC Code Studio & Tools or FILL ◦ Conduit Fill Calculator?

NEC Code Studio & Tools ships an update monthly, and FILL ◦ Conduit Fill Calculator weekly. Most recently, NEC Code Studio & Tools was updated on October 19, 2026 and FILL ◦ Conduit Fill Calculator on October 24, 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.*