Comparison

AudioCalc vs Konvert

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

Konvert

This app provides a simple and intuitive way to perform unit and currency conversions. It features a clean design, supports numerous categories and units, and offers convenient features like real-time conversion and widget integration.

Highlights
  • Easy to use with clean design
  • 24 categories and hundreds of units
  • Converts as you type
  • Today widget for last conversion
  • 3D Touch shortcut for currency converter
  • Localized in multiple languages
Features
Read full description

Featured by Apple on 60+ countries. “Konvert is a beautifully simple unit-conversion app for iPhone” - TheNextWeb “Conversions Have Never Been Simpler With Konvert” - AppAdvice Features: • Easy to use with clean design • 24 categories and hundreds of units • You can change the order of categories • You can see your last conversion with Today widget • You can copy your last conversion with 3D Touch • 3D Touch shortcut for currency converter • Converts as you type a number • It works with our “Kalkulator” app, you can use results within these apps • iPhone 5, 8, 8plus, XS, XSMAX, XR support • Localized in Japanese, Spanish, German, Italian, Turkish Categories & Units: • Angle : ° , g, rad, turn • Area : m², ac, a, ha, cm², dm², dam², hm², inch², km², mi², mm², yard², ft² • Base : 10, 16, 2, 8 • Currency : USD, EUR, JPY, GBP, TRY, CHF, AED, ARS, AUD, AZN, BGN, BHD, BOB, BRL, CAD, CLP, CNY, COP, CUP, CZK, DKK, DZD, EGP, GEL, HKD, HRK, HUF, IDR, ILS, INR, IQD, IRR, KRW, KWD, KZT, LTL, LYD, MXN, MYR, NOK, NZD, PEN, PHP, PKR, PLN, PYG, QAR, RON, RUB, SAR, SEK, SGD, SYP, THB, TMT, TND, TTD, TWD, UAH, UYU, VEF, ZAR … • Energy : J, kWh, BTU, cal, erg, kJ, kcal • Length : m, dm, mm, inch, yard, ft, cm, km, mi, NM • Mass : kg, lb, st, oz, t, ton, LT, gr, mg, mcg • Power : W, BTUhr, BTUs, cals, kcals, kW, hp • Speed : kmh, mph, fts, m/s, knot, mach, c (speed of light) • Temperature : C, F, K, R, D • Time : hr, d, m, w, yr, ns, μs, ms, s • Volume : m³, l, ml, cm³, cu in, cu yd, cu ft, (US)gal, (UK)gal,qt, pt, cup, fl oz, tbsp, tsp, bbl(fluid), bbl(oil), bbl(dry) • Acceleration : ms², Gal, g, ins², kms², mis² • Data : B, KB, MB, GB, TB, KiB, MiB, GiB, TiB, bit, Kbit, Mbit, Gbit, Tbit • Density : grcm³, kgm³, grl, ozgal, lbcu ft, kgl • Flow Rate : ls, lmin, lhr, m³s, m³mi, m³hr, cu fts, cu ftmin, cu fthr, gals, galmin, galhr, bbl(o)d, bbl(f)d • Force : N, dyn, pdl, kp • Frequency : Hz, kHz, MHz, GHz, rpm, rps, radmin, rads • Fuel : km/l, l/100km, l/100mil, gal/100mil, imperial gal/100mil, mpg, mpeg • Illuminance : lx, lmcm², lmm², mcd, ph, ph, nx • Pressure : b, psf, psi, Pa, torr, atm • Radiation : sv, gy, jkg, m²s², rem, R/h • Torque : Nm, Ncm, Nmm, kNm, dynm, ozf in, lbf ft, lbf in • Typography : pt, px(72), px(96), px(150), px(300), mm, cm, in, twip, em, pica

Screenshots

AudioCalc4 screens
Konvert4 screens

Verdict

The call

The clearest difference is review sentiment: Konvert at 79% against AudioCalc's 33%. Konvert also leads on rating (4.8 vs 3.0) and update cadence (monthly vs every 7 months). AudioCalc's advantage is iOS requirement (7.0 vs 26.0). 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

CostPrice · In-app purchases · Ads · Monetization

AudioCalc costs $2.99 and Konvert $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Konvert holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Konvert has 364 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of AudioCalc's written reviews are positive against 79% of Konvert's.

UpkeepUpdate frequency

AudioCalc ships an update every 7 months, Konvert monthly. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

Scorecard7 real differences · 3 level
AudioCalc versus Konvert: the parameters behind the verdict, then further details
ParameterAudioCalcKonvert
Price$2.99$1.99 — better
Rating3.0 (1 ratings)4.8 (364 ratings) — better
Positive reviews33.3% of reviews78.6% of reviews — better
Number of ratings1364 — better
Update frequencyEvery 7 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPod — betteriPhone
Requires iOS7.0 — better26.0
Further details — not scored
Size3 MB2 MB
Age rating4+4+
DeveloperNelceaInnovationBox

Customer experience

AudioCalc

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

Konvert

All ratings364 ratings
Positive96.7%
Neutral2.2%
Negative1.1%
Written reviews168 reviews
Positive78.6%
Neutral11.3%
Negative10.1%

Bugs and requests

AudioCalc

Not enough reviews yet to summarise bugs or requests.

Konvert

Reported bugs

5 issues
  • Exchange rates not updating properly
  • Inaccurate currency conversion rates (off by significant margins)
  • Data conversion errors (KB to Bytes calculation incorrect)
  • Unit arrangement feature non-functional
  • Missing units in various categories despite being listed

Requested features

10 requests
  • Add volume/liquid conversions (ml to oz, liters, etc.)
  • Expand currency list to include more world currencies
  • Improve unit selection interface (tap-to-select instead of swiping)
  • Add more measurement units (miles per gallon, stone weight, etc.)
  • Implement different color themes or dark mode
Show 5 more
  • Add ability to customize or hide categories
  • Include decibel conversions
  • Add Chinese language support
  • Alphabetical ordering of units
  • Custom conversion creation feature

In-app purchases

None

AudioCalc

No in-app purchases

None

Konvert

No in-app purchases

Questions

Is AudioCalc free?
AudioCalc costs $2.99, with no in-app purchases.
Is Konvert free?
Konvert costs $1.99, with no in-app purchases.
Which has better reviews, AudioCalc or Konvert?
Konvert is rated higher. AudioCalc averages 3.0 out of 5 from 1 ratings, while Konvert averages 4.8 from 364 ratings.
Do AudioCalc or Konvert have ads?
Neither AudioCalc nor Konvert shows ads.
Which is updated more often, AudioCalc or Konvert?
AudioCalc ships an update every 7 months, and Konvert monthly. Most recently, AudioCalc was updated on October 8, 2026 and Konvert on October 7, 2026.

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