# Wire & Load vs BaseCalc HVAC Calculator

Wire & Load and BaseCalc HVAC Calculator 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. Wire & Load sells 1 one-off in-app purchase and BaseCalc HVAC Calculator sells 2 in-app purchases, starting at $7.00 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Wire & Load | BaseCalc HVAC Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/basecalc-hvac-calculator/id6786116451/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Freemium |
| Size | 3 MB | 61 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Fu Kang Heng Development Co., Ltd.](https://appshunter.io/developer/1863837413) | [BASEMAPPED LLC](https://appshunter.io/developer/1896354976) |

## What reviewers say

### Wire & Load

[App page](https://appshunter.io/ios/app/wire-and-load/id6768856542)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $1.99 | one-time |


### BaseCalc HVAC Calculator

[App page](https://appshunter.io/ios/app/basecalc-hvac-calculator/id6786116451)

This professional tool offers 18 HVAC calculators for field use, including BTU, CFM, duct sizing, and psychrometrics. It saves calculation history, job records, and allows PDF export of worksheets. The app works offline and features a high-contrast interface for job sites.

**Highlights:** 18 HVAC calculators, BTU/CFM/Duct sizing, Psychrometric calculations, Refrigerant checks, Job records and worksheets, PDF export, Offline functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Pro Monthly | $7.00 | per month |
| HVAC Pro Yearly | $50.00 | per year |


## Frequently asked questions

### Is Wire & Load free?

Wire & Load is free to download, with in-app purchases available.

### Is BaseCalc HVAC Calculator free?

BaseCalc HVAC Calculator is free to download, with in-app purchases available.

### Do Wire & Load or BaseCalc HVAC Calculator have ads?

Neither Wire & Load nor BaseCalc HVAC Calculator shows ads.

### Which is updated more often, Wire & Load or BaseCalc HVAC Calculator?

Wire & Load ships an update every 2 months, and BaseCalc HVAC Calculator every 2 months. Most recently, Wire & Load was updated on November 2, 2026 and BaseCalc HVAC Calculator 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.*