Comparison

Black Audio Tool vs VPD Tool

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • Interactive VPD heatmap
  • Stage-specific VPD ranges
  • Leaf and Air VPD calculation
  • Home and Lock Screen widgets
  • On-device calculations
  • CSV log export
Features
Read full description

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

Black Audio Tool4 screens
VPD Tool4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Black Audio Tool versus VPD Tool: the parameters behind the verdict, then further details
ParameterBlack Audio ToolVPD Tool
Price$1.99$0.49 — better
Rating5.0 (7 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings7 — better1
Update frequencyEvery 24 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.5
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperPhilippe ZayNicholas Hwang

Customer experience

Black Audio Tool

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

VPD Tool

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Black Audio Tool

No in-app purchases

None

VPD Tool

No in-app purchases

Questions

Is Black Audio Tool free?
Black Audio Tool costs $1.99, with no in-app purchases.
Is VPD Tool free?
VPD Tool costs $0.49, with no in-app purchases.
Which has better reviews, Black Audio Tool or VPD Tool?
Black Audio Tool and VPD Tool are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.
Do Black Audio Tool or VPD Tool have ads?
Neither Black Audio Tool nor VPD Tool shows ads.
Which is updated more often, Black Audio Tool or VPD Tool?
Black Audio Tool ships an update every 24 months, and VPD Tool every 2 months. Most recently, Black Audio Tool was updated on October 24, 2026 and VPD Tool on October 18, 2026.

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