Decibel calculator vs Box Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Decibel calculator
Easily add and subtract sound levels expressed in decibels (dB). This utility converts dB values to a linear scale for accurate calculations, demonstrating how sound levels combine.
- Add decibel levels
- Subtract decibel levels
- Convert dB to linear scale
- Logarithmic scale calculations
- Demonstrates dB addition examples
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Sound levels are usually expressed in a logarithmic scale called the decibels (dB). The decibels cannot be added or subtracted directly. Each operation between decibel values requires to convert the sound level back to a linear scale using an antilog function. The dB calculator app allows the direct addition or subtraction of dB levels. The app uses the following formula: A + B = 10*LOG10(10^(A/10) + 10^(B/10)) For instance, 5dB + 5dB returns 8dB (3dB is added when doubling the sound level) or 1dB + 2dB = 4.5dB.
Box Builder
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Tool to help determine box dimensions and pieces required for boxes of tube straightening rolls. Created by Jacob McLachlan (mclachlan.11@osu.edu) for Turner Machine Company.
Screenshots
Verdict
The clearest difference is price: Box Builder at Free against Decibel calculator's $0.99. Box Builder also leads on update cadence (every 7 months vs every 17 months). Decibel calculator's advantage is iOS requirement (12.0 vs 15.0). 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
Box Builder is free to download; Decibel calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Decibel calculator ships an update every 17 months, Box Builder every 7 months. The most recent releases landed on October 8, 2026 and October 3, 2026 respectively.
| Parameter | Decibel calculator | Box Builder |
|---|---|---|
| Price | $0.99 | Free — better |
| Positive reviews | 50.0% of reviews | — |
| Update frequency | Every 17 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | ZPP | Neill Mclachlan |
In-app purchases
Decibel calculator
No in-app purchases
Box Builder
No in-app purchases
Questions
Is Decibel calculator free?
Is Box Builder free?
Do Decibel calculator or Box Builder have ads?
Which is updated more often, Decibel calculator or Box Builder?
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