Attenuator vs DigiCompCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Attenuator
Calculate output voltage, power, and attenuation based on input values and dB of attenuation. Features NMR-specific calculations for pulses and measures local magnetic fields and barometric pressure.
- Calculate output voltage and power
- Specify input voltage (Vpp or Vrms)
- Calculate attenuation in dB
- NMR pulse calculations
- Measure local magnetic field
- Display barometric pressure
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Attenuator is a utility for anyone working with radio frequency sources and needs to know power and voltage after attenuation. You can specify an input voltage (Vpp or Vrms) and dB of attenuation to get the output voltage, power and attenuation. The impedance can be specified, typically 50Ω for most systems. There is a new emphasis on NMR utility, with options for calculating pulses based on reference power and pulse length. Powers are in Watts, dBm, and dB values. Measure local magnetic field to check stray static fields from magnets. See the local barometric pressure, useful if the magnet boil-off is high
DigiCompCalc
This utility app simplifies digital power compensator coefficient calculations. It allows users to input data and obtain results directly on their mobile device, eliminating the need for complex desktop software. Results can be emailed for easy sharing.
- Calculate coefficients from analog compensator values
- Calculate coefficients directly using poles and zeros
- Email results
- Remembers last calculated variables
- Dark Mode support
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Are you tired of using Excel or Matlab to calculate the coefficients for your digital power compensator? Do you want to do the calculations in the palm of your hand, just by entering the pertinent data? Then the Digital Compensator Calculator (DigiCompCalc) is for you! You no longer have to buy Matlab for just a few simple digital filter calculations. For use with Type II and Type III error amplifiers. Features: • Free! No Ads! • Calculate coefficients using the values from an analog compensator • Calculate coefficients directly using poles and zeros • Email results to yourself or your firmware designer • Remembers last set of calculated variables • Dark Mode support Install DigiCompCalc today!
Screenshots
Verdict
The clearest difference is in-app purchases: DigiCompCalc at none against Attenuator's 1. Attenuator's advantage is update cadence (every 7 months vs every 68 months) and ratings volume (8 vs 2). On price, rating, review sentiment and ads 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. Attenuator sells 1 one-off in-app purchase. DigiCompCalc asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Attenuator against 5.0 for DigiCompCalc. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Attenuator ships an update every 7 months, DigiCompCalc every 68 months. The most recent releases landed on September 14, 2026 and June 5, 2026 respectively.
| Parameter | Attenuator | DigiCompCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 8 — better | 2 |
| Update frequency | Every 7 months — better | Every 68 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone |
| Requires iOS | 17.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Tim E. Burrow | Ernie Zappacosta |
Customer experience
Attenuator
DigiCompCalc
In-app purchases
Attenuator
- Remove all ads$1.99
DigiCompCalc
No in-app purchases
