TestTone vs Qithesizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TestTone
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This test signal generator is ideal for checking audio equipment and confirming audible frequency ranges.It can play sine, triangle, sawtooth, and square waves from 20 Hz to 20 kHz, as well as white noise and pink noise. Features • You can switch between preset frequencies, white noise, and pink noise using the frequency preset buttons. You can also tap the frequency display area to enter any desired frequency manually. The frequency can also be adjusted using the left/right buttons or by tapping the frequency display. • Supports switching between sine, triangle, sawtooth, and square waveforms. • Playback starts or stops by tapping the ON/OFF button or the icon at the top. Note Playing at high volumes may cause hearing damage or damage to your audio equipment. Please use with caution.
Qithesizer
This advanced music synthesizer combines virtual analog, wavetable, and physical modeling sound engines. It offers extensive modulation capabilities, a built-in sequencer, and on-screen keyboard for creating complex sounds.
- Multiple sound engines (virtual analog, wavetable, physical modeling)
- Extensive modulation sources and destinations
- Full MIDI mapping
- 16-step sequencer with pattern editor
- Waveform and dynamic visualizations
- On-screen keyboard
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Meet Qithesizer, a powerful multi-engine hybrid software synthesizer. Designed with wind controller in mind, it combines virtual analog, wavetable, and physical modeling in one. 【Features】 ∙ Multiple sound engines: basic waveforms, hundreds of digital waveforms, multiple physical models ∙ 11 modulation sources, 27 modulation destinations ∙ Full midi mapping ∙ 16-step sequencer with powerful pattern editor, save patterns by preset ∙ Waveform and dynamic visualizations ∙ Full-size, on-screen keyboard Our site: www.robkoo.com Facebook Page: @RobkooMusic Twitter: @Robkoo_Music Feedback: cuimingwei@robkoo.com
Screenshots
Verdict
The clearest difference is price: TestTone at $1.99 against Qithesizer's $12.99. Qithesizer's advantage is update cadence (fortnightly vs every 5 months). On ads, in-app purchases, device support and iOS requirement 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
TestTone costs $1.99 and Qithesizer $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TestTone ships an update every 5 months, Qithesizer fortnightly. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.
| Parameter | TestTone | Qithesizer |
|---|---|---|
| Price | $1.99 — better | $12.99 |
| Rating | — | 4.1 (11 ratings) — better |
| Positive reviews | — | 76.9% of reviews |
| Number of ratings | — | 11 — better |
| Update frequency | Every 5 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | HTLab | Robkoo Information & Technologies Co., Ltd. |
In-app purchases
TestTone
No in-app purchases
Qithesizer
No in-app purchases
