# CHAO Tech vs NF ACOUS

CHAO Tech and NF ACOUS 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.

CHAO Tech ships an update every 9 days, NF ACOUS every 8 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | CHAO Tech | NF ACOUS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 8 days** |
| Size | 131 MB | 25 MB |
| Requires iOS | 16 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [超驰 戚](https://appshunter.io/developer/1858062195) | [Shenzhen Ningfan Acoustics Co., Ltd.](https://appshunter.io/developer/1875820174) |

## What reviewers say

### CHAO Tech

[App page](https://appshunter.io/ios/app/chao-tech/id6756102551)

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

**In-app purchases:** none


### NF ACOUS

[App page](https://appshunter.io/ios/app/nf-acous/id6759710633)

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

**In-app purchases:** none


## Frequently asked questions

### Is CHAO Tech free?

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

### Is NF ACOUS free?

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

### Do CHAO Tech or NF ACOUS have ads?

Neither CHAO Tech nor NF ACOUS shows ads.

### Which is updated more often, CHAO Tech or NF ACOUS?

CHAO Tech ships an update every 9 days, and NF ACOUS every 8 days. Most recently, CHAO Tech was updated on October 30, 2026 and NF ACOUS 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.*