Black Audio Tool vs VPD Tool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Black Audio Tool
This app is a versatile sound generation tool for exploring audio. It allows users to create and control a wide range of sounds, from classic waveforms to various noise colors, with built-in effects for further shaping. Designed for audiophiles, sound designers, and musicians, it offers precise real-time control for creative experimentation.
- Precise waveform generation
- Multiple noise colors
- Built-in reverb and distortion
- Real-time parameter control
- Infra sonic and ultra sonic modes
- Audio recording to file
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Black Audio Tool – B.A.T. Black Audio Tool (B.A.T.) is a powerful and versatile sound-generation app for anyone who enjoys exploring audio. Whether you are an audiophile, sound designer, musician, engineer, or simply curious about the physics of sound, B.A.T. turns your device into a compact laboratory for tone creation, noise shaping, and experimental listening. Create and control a wide range of sounds with precision. Generate classic waveforms such as sine, square, sawtooth, and triangle, then fine-tune them in real time with responsive controls for frequency, tuning, fine tuning, amplitude, and wet/dry mix. B.A.T. goes beyond standard tone generation. Explore interference, layered signal combinations, and a rich collection of noise colors, including white, pink, brown, blue, violet, green, and black noise for everything from soft ambience to unpredictable textures and randomized bursts. To shape your sound even further, B.A.T. includes built-in audio effects such as reverb and distortion, with the option to combine them for more complex and aggressive sonic results. The interface is designed for fast experimentation, precise adjustment, and smooth real-time control. From clean reference tones to abstract soundscapes, from audible frequencies to infra sonic and ultra sonic ranges, B.A.T. is built for discovery, testing, and creative play. Key Features: * Precise waveform generation * Sine, square, sawtooth, and triangle waves * Interference and overlay sound generation * Multiple noise colors, including black noise * Reverb, distortion, and mixed effects * Infra sonic and ultra sonic tone modes * Real-time parameter control * Audio recording to file * AirPlay support Private by Design: * No ads * No in-app purchases * No trackers * No data collection B.A.T. is a focused utility app made for pure sound experimentation — clean, direct, and fully yours.
VPD Tool
This utility app helps growers understand Vapor Pressure Deficit (VPD) for optimal plant growth. It features an interactive heatmap and stage presets to guide environmental adjustments. Calculations are performed on-device for privacy.
- Interactive VPD heatmap
- Stage-specific VPD ranges
- Leaf and Air VPD calculation
- Home and Lock Screen widgets
- On-device calculations
- CSV log export
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Know your VPD in seconds. Enter temperature & humidity (or tap the interactive heatmap) to see Leaf VPD and Air VPD with scientifically labeled isolines. Choose Seedling / Veg / Flower / Late Flowering to see target VPD ranges and how best to nudge your environment to “ideal.” Why growers love it • Interactive heatmap: drag to explore temperature–humidity combos • Stage presets: recommended VPD bands by plant development stage • Leaf vs Air: leaf–air offset, dew point, absolute humidity • Beautiful widgets: small/medium/large Home & Lock Screen widgets • Private by design: on-device calculations, no account required Details • VPD = es(T) × (1 − RH/100); leaf VPD uses leaf temperature (air + ΔT) • Absolute humidity via water vapor partial pressure (ideal gas law) • Full support for °C/°F, metric/imperial • Export logs to CSV Support Questions or feedback: support@nicksberryfarm.com
Screenshots
Verdict
The clearest difference is update cadence: VPD Tool at every 2 months against Black Audio Tool's every 24 months. VPD Tool also leads on price ($0.49 vs $1.99). Black Audio Tool's advantage is ratings volume (7 vs 1) and iOS requirement (15.6 vs 18.5). On rating, review sentiment, ads and in-app purchases 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
Black Audio Tool costs $1.99 and VPD Tool $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Black Audio Tool against 5.0 for VPD Tool. That said, the two scores are not equally well evidenced: Black Audio Tool has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Black Audio Tool ships an update every 24 months, VPD Tool every 2 months. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.
| Parameter | Black Audio Tool | VPD Tool |
|---|---|---|
| Price | $1.99 | $0.49 — better |
| Rating | 5.0 (7 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 24 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.5 |
| Further details — not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Philippe Zay | Nicholas Hwang |
Customer experience
Black Audio Tool
VPD Tool
In-app purchases
Black Audio Tool
No in-app purchases
VPD Tool
No in-app purchases
Questions
Is Black Audio Tool free?
Is VPD Tool free?
Which has better reviews, Black Audio Tool or VPD Tool?
Do Black Audio Tool or VPD Tool have ads?
Which is updated more often, Black Audio Tool or VPD Tool?
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