Oscillator vs METRO_PAD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Oscillator
Generate simple audio tones with four distinct waveforms including sine, square, saw, and white noise. Control frequency, panning, and amplitude with intuitive sliders and numeric input. Ideal for testing audio or creating experimental music.
- Four waveforms (sine, square, saw, white noise)
- Exponential frequency control
- Numeric frequency input
- Panning control
- Amplitude control
- Multi-touch controls
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Oscillator is a simple and rough audio generator application which has the following functions. You can use it as a test tone and play it as a strange musical instrument. - Four waveforms. (i.e. sine wave, square wave, saw wave and white noise.) - Exponential Frequency control using the slider. - Frequency numeric input using the software keyboard. - Equal distance panning control using the slider. - dB style amplitude control using the slider. - Sound output on/off button. - All sliders and buttons are multi-touch controlled. Please note the limitations below before you purchase/use this application. - The frequency control is not effective with the white noise oscillator. - The panning control is not effective with an iPhone internal speaker because it is monophonic. Use headphones or stereo speakers. - The audio output might be interrupted on a keyboard input, a view change and so on. - The accuracy of the audio output is not very high but it is reasonable.
METRO_PAD
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サウンドエンジニアリングで使用するエキスパンダーやコンプレッサーを楽曲のテンポから割り出した数字で完璧、確実にミキシングするための補助ツール！サウンドエンジニアのための究極のチューニングツールです！
Screenshots
Verdict
The clearest difference is update cadence: METRO_PAD at every 6 days against Oscillator's every 30 months. METRO_PAD also leads on iOS requirement (13.0 vs 15.0). Oscillator's advantage is price ($0.99 vs $2.99). On ads, in-app purchases 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
Oscillator costs $0.99 and METRO_PAD $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Oscillator ships an update every 30 months, METRO_PAD every 6 days. The most recent releases landed on August 13, 2026 and September 9, 2026 respectively.
| Parameter | Oscillator | METRO_PAD |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | 3.7 (3 ratings) — better | — |
| Positive reviews | 79.6% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 30 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | +4 | 4+ |
| Developer | Masayuki Akamatsu | YOSHINORI KADOGAKI |
In-app purchases
Oscillator
No in-app purchases
METRO_PAD
No in-app purchases
