Signal Generator vs StimuliApp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Signal Generator
Generate high-quality audio signals including sine, square, triangle, sawtooth waves, and white/pink noise. Ideal for testing audio systems, frequency response, and hearing capabilities.
- Sine wave generation
- Square wave generation
- White noise generation
- Pink noise generation
- Two-channel phase difference waves
- Audio frequency response testing
- Hearing test capabilities
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A high-quality audio Signal Generator for the iPhone. Now you can have a professional grade signal generator for your iPhone. Create sine waves, square waves, white noise, and pink noise. The signal generator can help you generate sine, square, triangle, sawtooth, white noise, pink noise signals and generate sine two-channel phase difference waves. You can use the signal generator to test your audio frequency response system, system noise scanning, headset burning machine and other scenarios. Test your hearing can hear how low the frequency of sound. Able to apply and experiment with test scenarios.
StimuliApp
Create precise psychophysical tests on iOS devices without programming. Assess perceptual capabilities using various stimuli like images, sounds, and videos with synchronized visual and auditory output. Features include real-time preview and automatic report generation.
- Precise timing with Metal framework
- 60 or 120 Hz test options
- Synchronized visual and auditory stimulation
- Interactive stimulus creation with preview
- Automatic report generation
- Gamma-correction features
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StimuliApp is an app designed to create psychophysical tests with precise timing on iOS devices (iPad and iPhone). Psychophysical tests are tests to assess perceptual capabilities. With a simple system of menus, different types of tests including the most common stimuli (gabors, random dots, images, sounds and videos among others) can be created. Programming skills are not necessary. Features: - Precise timing (frames are not dropped) thanks to the use of the native framework Metal, which provides a direct access to the GPU of the iOS device. - Option to run tests at 60 or 120 Hz depending on the model of the device. - Visual and auditory stimulation are synchronized. - Interactive creation of stimuli using real-time preview. - Possibility of using different spatial and time units. - Gamma-correction features. - Automatic report generation.
Screenshots
Verdict
The clearest difference is price: StimuliApp at Free against Signal Generator's $0.99. StimuliApp also leads on update cadence (every 6 weeks vs every 15 months) and rating (5.0 vs 4.6). Signal Generator's advantage is ratings volume (10 vs 1) and iOS requirement (11.0 vs 13.0). 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
StimuliApp is free to download; Signal Generator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
StimuliApp holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Signal Generator has 10 ratings behind it against 1, so its average is the more settled of the two.
Signal Generator ships an update every 15 months, StimuliApp every 6 weeks. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.
| Parameter | Signal Generator | StimuliApp |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.6 (10 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 10 — better | 1 |
| Update frequency | Every 15 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 2 MB | 10 MB |
| Age rating | 12+ | 4+ |
| Developer | 龙刚 李 | Rafael Marin Campos |
Customer experience
Signal Generator
StimuliApp
In-app purchases
Signal Generator
No in-app purchases
StimuliApp
No in-app purchases
