CA PRO DSP vs Lux Decibel Insight
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CA PRO DSP
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Digital front-end effector control software. A karaoke effect device with speaker processor function, each part of which is independently adjustable. Adopting a 24 bit data bus and a 32 bit DSP. MUSIC has 10 parameter equalizations. MUSIC to main output high pass filter: 12dB-24dB (0Hz-303Hz) MIC is equipped with 15 segment parametric equalization and the microphone has compression limiting function. The main output is equipped with 5-stage parameter equalization and has compression limiting function. The center output, rear output, and subwoofer are all equipped with 3-segment parametric equalization. The microphone has 4 types of feedback suppression and can be selected as OFF 1 2 3. Can store 6 modes. The microphone output, main output, center output, subwoofer output, and rear output are all equipped with voltage limiting and delay functions. Built in manager mode and user mode, user mode cannot be stored after adjusting parameters.
Lux Decibel Insight
Monitor real-time sound and light levels in your environment. Track variations, detect changes, and maintain a reference for various activities like work, study, or content creation. Export your measurement history for later analysis.
- Real-time sound level measurement (dB)
- Camera-based light estimation (lux)
- Live sound and light charts
- Session average and peak sound values
- Measurement history and CSV export
- Simple session control
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Understand the sound and light around you, together. Lux Decibel Insight combines sound levels in dB and camera-based light estimates in lux on your iPhone and iPad. Follow changes in real time and keep both readings visible while exploring your session. CHECK YOUR SURROUNDINGS • Observe noise around your desk, office, or study space. • Follow sound changes in meeting rooms and shared spaces. • Check estimated light when preparing photos or videos. • Explore conditions in studios, shops, classrooms, and reading areas. FOLLOW EVERY SESSION • View live sound and light readings. • Follow separate sound and light charts. • Check average sound, peak sound, and average light. • Start and stop capture with a clear ON/OFF control. • Scroll through the tools while keeping current readings visible. GO FURTHER WITH PREMIUM A one-time purchase unlocks: • CSV export of the current session. • Extended charts with up to 1,800 samples. • Focus mode for sound or light charts. • Live microphone activity and signal preview. • Calibration controls for sound offset, light correction, and smoothing. • An ad-free experience. Individual tools can also be unlocked for 30 minutes by completing a rewarded ad, when available. Readings belong to the current session. Export your CSV before tapping OFF: stopping capture clears the session. MEASUREMENT GUIDANCE Readings are indicative estimates based on your device’s microphone and camera. Calibration requires an external reference. For regulatory, safety, or certification checks, use calibrated certified instruments.
Screenshots
Verdict
The clearest difference is in-app purchases: CA PRO DSP at none against Lux Decibel Insight's 1. CA PRO DSP also leads on ads (none vs shown) and iOS requirement (15.6 vs 18.6). Lux Decibel Insight's advantage is update cadence (every 2 weeks vs every 2 months). 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. Lux Decibel Insight sells 1 one-off in-app purchase. CA PRO DSP asks for nothing beyond the download.
CA PRO DSP ships an update every 2 months, Lux Decibel Insight every 2 weeks. Both last shipped on November 5, 2026.
| Parameter | CA PRO DSP | Lux Decibel Insight |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 3 MB | 5 MB |
| Age rating | 4+ | +4 |
| Developer | 文胜 周 | cAsAxMoRe |
In-app purchases
CA PRO DSP
No in-app purchases
Lux Decibel Insight
- Lux Decibel Insight Premium$1.99









