Sonic Master vs Useless Ideas
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sonic Master
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.
- 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
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Sonic Master has designed an exquisite sound wave generator that can produce sounds of specified frequencies. You can use your finger to slide up and down to control the frequency. You can also choose different waveforms such as sine wave, rectangular wave, triangle wave, and sawtooth wave. After tuned to a satisfactory sound wave, you can choose to export the audio file. 【Feature】: 1. Sound wave generator Produce sound with frequency of 1~20k Hz, support sine wave, rectangular wave, triangle wave, sawtooth wave, easy to operate. 2. Export sound waves You can select export duration, sound channel, sampling frequency, generate audio files and then export. 3. Drain Water in the mobile phone will affect the performance of the mobile phone and cause greater damage to the speakers. Sonic Master uses the principle of sonic vibration to shake out the water in the phone, and it can solve the trouble of water in the phone without disassembling the phone. 4. Dust removal The speaker of the mobile phone will absorb a lot of dust and iron powder, which will cause the speaker to have a small sound, and severely pop or even no sound. Sonic Master uses the principle of resonance to make the dust vibration away from the speaker, so as to achieve the effect of dust removal 5. Focus timer The Pomodoro Technique makes you more efficient, focus on 25 minutes, rest for 5 minutes, and combine work with rest 6. Music timer Music plays regularly to help you sleep well 7. Voice of Nature Selected high-definition sound of all things to create different natural time and space experience for you. Sound scenes include: forest, flowing water, distant mountains, forest breeze, night sea, snow-capped mountains, library, etc., calm your mind and body with nature 8. Decibel Meter Noise will damage your hearing unknowingly. The decibel meter can accurately measure the environmental noise and pay attention to noise pollution anytime and anywhere.
Useless Ideas
Generate random, often nonsensical, ideas to spark creativity. This unofficial client provides daily inspiration on the go.
- Generate useless ideas
- Daily inspiration
- Unofficial API client
- On-the-go inspiration
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An unofficial client for the Useless Ideas API (https://q24.io/useless) Generate useless ideas. Get inspired every day, everywhere.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Sonic Master | Useless Ideas |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (46 ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 83.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 46 — better | 1 |
| Update frequency | Every 4 months — better | Every 12 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 32 MB | 5 MB |
| Age rating | 4+ | 12+ |
| Developer | 东海 刘 | 俊 林 |
Customer experience
Sonic Master
Useless Ideas
In-app purchases
Sonic Master
- Pro Edition$1.99
- Lifetime Pro Edition$3.99
Useless Ideas
No in-app purchases
