# Wi vs AcoustiCalc Pro

The clearest difference is price: Wi at Free against AcoustiCalc Pro's $1.99. Wi also leads on update cadence (every 5 weeks vs every 5 months) and iOS requirement (6.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Wi is free to download; AcoustiCalc Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Wi ships an update every 5 weeks, AcoustiCalc Pro every 5 months. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Wi | AcoustiCalc Pro |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Size | 11 MB | 1 MB |
| Requires iOS | **6.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chromateq](https://appshunter.io/developer/540311928) | [Guanghe Xu (tianjin) Digital Technology Co., Ltd](https://appshunter.io/developer/1895336115) |

## What reviewers say

### Wi

[App page](https://appshunter.io/ios/app/wi-light-2016/id1072132394)

**Features:** macOS Compatibility

**In-app purchases:** none


### AcoustiCalc Pro

[App page](https://appshunter.io/ios/app/acousticalc-pro/id6763897052)

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

**In-app purchases:** none


## Frequently asked questions

### Is Wi free?

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

### Is AcoustiCalc Pro free?

AcoustiCalc Pro costs $1.99, with no in-app purchases.

### Do Wi or AcoustiCalc Pro have ads?

Neither Wi nor AcoustiCalc Pro shows ads.

### Which is updated more often, Wi or AcoustiCalc Pro?

Wi ships an update every 5 weeks, and AcoustiCalc Pro every 5 months. Most recently, Wi was updated on October 6, 2026 and AcoustiCalc Pro on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*