# Sonic Master vs Useless Ideas

The clearest difference is review sentiment: Sonic Master at 83% against Useless Ideas's 0%. Sonic Master also leads on rating (4.6 vs 3.0) and ratings volume (46 vs 1). Useless Ideas's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Sonic Master sells 2 one-off in-app purchases. Useless Ideas asks for nothing beyond the download.

Sonic Master holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Sonic Master has 46 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 83% of Sonic Master's written reviews are positive against 0% of Useless Ideas's.

Sonic Master ships an update every 4 months, Useless Ideas every 12 months. The most recent releases landed on September 14, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Sonic Master | Useless Ideas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (46 ratings)](https://appshunter.io/ios/app/sonic-master-dust-clear/id1500104231/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/useless-ideas/id1516645836/reviews) |
| Number of ratings | **46** | 1 |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 months** | Every 12 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 32 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [东海 刘](https://appshunter.io/developer/1454617571) | [俊 林](https://appshunter.io/developer/1511359065) |

## What reviewers say

### Sonic Master

[App page](https://appshunter.io/ios/app/sonic-master-dust-clear/id1500104231)

Generate and export custom sound waves with various waveforms. This app also features tools to remove water and dust from your phone's speakers, a focus timer, music timer, nature sounds, and a decibel meter.

**Highlights:** Sound wave generator (1-20kHz), Multiple waveform options, Audio file export, Water and dust removal for speakers, Focus timer (Pomodoro Technique), Nature soundscapes, Decibel meter

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Edition | $1.99 | one-time |
| Lifetime Pro Edition | $3.99 | one-time |


### Useless Ideas

[App page](https://appshunter.io/ios/app/useless-ideas/id1516645836)

Generate random, often nonsensical, ideas to spark creativity. This unofficial client provides daily inspiration on the go.

**Highlights:** Generate useless ideas, Daily inspiration, Unofficial API client, On-the-go inspiration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sonic Master free?

Sonic Master is free to download, with in-app purchases available.

### Is Useless Ideas free?

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

### Which has better reviews, Sonic Master or Useless Ideas?

Sonic Master is rated higher. Sonic Master averages 4.6 out of 5 from 46 ratings, while Useless Ideas averages 3.0 from 1 ratings.

### Do Sonic Master or Useless Ideas have ads?

Sonic Master shows ads; Useless Ideas does not.

### Which is updated more often, Sonic Master or Useless Ideas?

Sonic Master ships an update every 4 months, and Useless Ideas every 12 months. Most recently, Sonic Master was updated on September 14, 2026 and Useless Ideas on September 9, 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.*