Attenuator vs EIRP Calculator
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
EIRP Calculator
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EIRP calculator let you calculate the effective transmission power with a given combination of radio transmitter and antenna. Equivalent isotropically radiated power (EIRP) or, alternatively, effective isotropically radiated power is the amount of power that a theoretical isotropic antenna (which evenly distributes power in all directions) would emit to produce the peak power density observed in the direction of maximum antenna gain. (from Wikipedia)
Screenshots
Verdict
The clearest difference is in-app purchases: EIRP Calculator at none against Attenuator's 1. Attenuator's advantage is update cadence (every 7 months vs every 129 months). On price, ads, device support and iOS requirement 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. EIRP Calculator asks for nothing beyond the download.
Attenuator ships an update every 7 months, EIRP Calculator every 129 months. The most recent releases landed on July 29, 2026 and September 13, 2026 respectively.
| Parameter | Attenuator | EIRP Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 7 months — better | Every 129 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 | 17.5 — better |
| Further details — not scored | ||
| Size | 1 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Tim E. Burrow | Pulsely Consulting |
In-app purchases
Attenuator
- Remove all ads$1.99
EIRP Calculator
No in-app purchases
Questions
Is Attenuator free?
Is EIRP Calculator free?
Do Attenuator or EIRP Calculator have ads?
Which is updated more often, Attenuator or EIRP Calculator?
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