# TrueNoiser vs 碳基常识

The clearest difference is price: 碳基常识 at Free against TrueNoiser's $0.99. TrueNoiser's advantage is iOS requirement (12.0 vs 17.0). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

碳基常识 is free to download; TrueNoiser costs $0.99 up front. TrueNoiser sells 1 one-off in-app purchase and 碳基常识 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

TrueNoiser ships an update every 2 weeks, 碳基常识 weekly. The most recent releases landed on November 7, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | TrueNoiser | 碳基常识 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/truenoiser/id6499069241/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 143 MB | 3 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Powerless Co., Ltd](https://appshunter.io/developer/1738728750) | [雪萃 杜](https://appshunter.io/developer/1882899799) |

## What reviewers say

### TrueNoiser

[App page](https://appshunter.io/ios/app/truenoiser/id6499069241)

This app offers a tranquil escape with a variety of natural sounds and high-quality audio. It's designed to help users relax, improve focus for work or study, and enhance sleep quality.

**Highlights:** Retro interface design, Variety of natural sounds, High-quality audio recordings, Sleep assistance soundscapes, Ad-free experience, Improved focus for work/study

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pass Card | Free | one-time |


### 碳基常识

[App page](https://appshunter.io/ios/app/id6818057553)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 永久解锁内容 | $0.99 | one-time |


## Frequently asked questions

### Is TrueNoiser free?

TrueNoiser costs $0.99, and also offers in-app purchases.

### Is 碳基常识 free?

碳基常识 is free to download, with in-app purchases available.

### Do TrueNoiser or 碳基常识 have ads?

Neither TrueNoiser nor 碳基常识 shows ads.

### Which is updated more often, TrueNoiser or 碳基常识?

TrueNoiser ships an update every 2 weeks, and 碳基常识 weekly. Most recently, TrueNoiser was updated on November 7, 2026 and 碳基常识 on November 6, 2026.

---

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