Comparison

AudioCalc vs ProPi System Analyzer

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

Head to head
About

AudioCalc

This tool provides audio-specific conversion formulas for HiFi enthusiasts, home theater buffs, and audio professionals. It includes converters for frequency, band, delay, volume, and room modes, aiding in loudspeaker positioning, EQ setup, and room acoustics. Supports both imperial and metric units.

Highlights
  • Frequency, period, and wavelength converter
  • Parametric EQ band setup tool
  • Speaker distance and delay calculator
  • Amplifier power calculation
  • Room mode response computation
  • Imperial and metric unit support
Features
Read full description

HiFi enthousiasts, Home Theater buffs and audio professionals alike make sure you always have those handy formulas with you. This tool offers you a collection of audio targeted conversion tools. The frequency, period and wavelength converter comes in quite handy for positioning loudspeakers. The band tool helps you setup a parametric EQ. The delay part gives you an insight when setting speaker distances and delays. The volume tool helps you determine the amplifier power required for a given set of speakers. The room modal response tool allows you to compute the room modes present in a room. This is crucial when placing a subwoofer provide correct bass response. It can also be used when designing a room to avoid dimensions that would lead to a poor modal response. AudioCalc works in both imperial and metric units. Simply swipe down to reveal the unit selection view. If you liked this tool, be sure to also check VideoCalc, the companion tool that addresses your video needs.

About

ProPi System Analyzer

Read full description

ProPi System Analyzer is a professional audio measurement and system alignment tool designed for sound engineers, technicians, and live sound professionals. ProPi helps you analyze and optimize sound systems directly on iPhone with real-time measurement tools for system tuning and acoustic analysis. Key features include: • RTA and spectrum analysis • Phase and magnitude measurement • Impulse response analysis • Group delay measurement • SPL monitoring • Delay and time alignment tools • Sweep and pink-noise measurement • Subwoofer system analysis and alignment • Subwoofer array visualization • Crossover and system tuning tools • Professional audio measurement displays ProPi is designed for PA systems, live sound, speaker alignment, system commissioning, and acoustic troubleshooting. Whether you are aligning subwoofers with main speakers, checking phase relationships, analyzing frequency response, or tuning a complete sound system, ProPi provides the measurement tools needed for professional audio work.

Screenshots

AudioCalc4 screens
ProPi System Analyzer4 screens

Verdict

The call

The clearest difference is price: AudioCalc at $2.99 against ProPi System Analyzer's $19.99. AudioCalc also leads on iOS requirement (7.0 vs 17.0). ProPi System Analyzer's advantage is update cadence (every 5 days vs every 7 months). 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

CostPrice · In-app purchases · Ads · Monetization

AudioCalc costs $2.99 and ProPi System Analyzer $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

AudioCalc ships an update every 7 months, ProPi System Analyzer every 5 days. Both last shipped on November 6, 2026.

Scorecard3 real differences · 7 level
AudioCalc versus ProPi System Analyzer: the parameters behind the verdict, then further details
ParameterAudioCalcProPi System Analyzer
Price$2.99 — better$19.99
Rating3.0 (1 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings1 — better—
Update frequencyEvery 7 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPod — betteriPhone
Requires iOS7.0 — better17.0
Further details — not scored
Size3 MB59 MB
Age rating4+4+
DeveloperNelceaAnh Viet Do

In-app purchases

None

AudioCalc

No in-app purchases

None

ProPi System Analyzer

No in-app purchases

Questions

Is AudioCalc free?
AudioCalc costs $2.99, with no in-app purchases.
Is ProPi System Analyzer free?
ProPi System Analyzer costs $19.99, with no in-app purchases.
Do AudioCalc or ProPi System Analyzer have ads?
Neither AudioCalc nor ProPi System Analyzer shows ads.
Which is updated more often, AudioCalc or ProPi System Analyzer?
AudioCalc ships an update every 7 months, and ProPi System Analyzer every 5 days. Most recently, AudioCalc was updated on November 6, 2026 and ProPi System Analyzer on November 6, 2026.

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