Comparison

SPL vs mRecall

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

Head to head
About

SPL

This professional-grade digital sound level meter measures decibels with advanced modes and filters meeting ANSI Type 1 standards. It allows storing, exporting, and calibrating measurements, and can be used with external calibrated microphones for precise results.

Highlights
  • Professional-grade digital sound level meter
  • ANSI/IEC Type 1 standards compliant filters and modes
  • Store, recall, and export GPS/time-stamped results
  • Supports external calibrated microphones
  • Adjustable calibration for accuracy
  • Internal mic compensation filter
Features
Read full description

SPL is a professional-grade digital sound level meter (decibel meter) for your iPad, iPhone or iPod touch. It includes all of the modes, filters, and features that you would expect from a professional ANSI or IEC Sound Level Meter. All filters and averaging modes meet or exceed the criteria for ANSI Type 1 standards or better. SPL is created from the same team who brought you the Audio Toolbox and ATB Plus. Store Results -- Uses the same powerful Save / Recall engine as our premier app, AudioTools. Allows storing GPS and time-stamped results, and exporting them to your computer. You can also use SPL with our calibrated iPhone measurement mic, iTestMic, or iAudioInterface. The screen flips if you turn the phone upside down, so that you can point the built-in iPhone mic directly at the sound source. *** Modes: Slow, Fast, Impulse, Peak, and Leq. *** Filters: A and C weighting, and 10 octave band filters. *** Includes a resettable Max field to track the highest reading. *** Includes a reference field (except in Leq mode) so that you can set a reference level and do seat-to-seat comparisons. The SPL meter can be fully calibrated. It comes preset with the calibration for a typical iPad, iPhone, and iPod Touch. Most iOS devices will be within a few dB of this reading. If you have access, even temporarily, to a calibrated sound level meter, just use the calibration field on the settings scree to match the meter, and you will be accurately calibrated. Also, see our other professional-grade audio apps: AudioTools, our premier suite of professional-caliber audio and acoustics test apps, Speaker Pop, to test speaker polarity, and RTA, a real-time analyzer for the iPhone. And, we have a group of calibrated, accurate measurement microphones, including iTestMic,iTestMic2, and iAudioInterface2, that allows full professional results for Type 1 or Type 2 measurements. This will allow measuring a range from approximately 30 dB SPL to 130 dB SPL. Each mic will include a calibration factor that you will enter into the SPL app for calibrated measurements. This mic will also work with Speaker Pop, our speaker polarity tester, FFT, RTA, ETC, and other acoustical measurement apps in our AudioTools app that is available now. Also, see our iAudioInterface2 system, which supports any pro test and measurement mic. Now includes an iPhone internal mic compensation filter, to cancel out the low-frequency roll-off present in the iPhone and other iOS devices. See our other audio apps, including AudioTools.

About

mRecall

This application allows users to quickly recall audio scenes and snapshots created in Waves host applications. It's designed for use with Waves SuperRack and the eMotion LV1 live mixer over a Wi-Fi network.

Highlights
  • Quick audio scene recall
  • Snapshot recall
  • Designed for Waves SuperRack
  • Designed for eMotion LV1
  • Wi-Fi network connectivity
  • Mobile interface
Features
Read full description

Designed exclusively for Waves SuperRack and the eMotion LV1 live mixer, mRecall gives user the ability to quickly pull up audio scenes and snapshots created and saved in Waves host applications over a dedicated Wi-Fi network. Quick audio scene & snapshot recall app for iOS (iPhone®, iPad®, iPod touch®) devices Easily cue any saved preset snapshots in SuperRack or eMotion LV1 on the fly Designed for SuperRack and the eMotion LV1 live mixer Friendly and efficient mobile interface Please note: mRecall does not mix or route audio on its own; it requires Waves SuperRack or the eMotion LV1 live mixer to fully function. It does not pass audio through your device.

Screenshots

SPL1 screens
mRecall3 screens

Verdict

The call

The clearest difference is price: mRecall at Free against SPL's $8.99. mRecall also leads on rating (5.0 vs 3.0) and iOS requirement (13.0 vs 15.0). On ratings volume, update cadence, ads and in-app purchases 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

mRecall is free to download; SPL costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

mRecall holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 3 respectively.

UpkeepUpdate frequency

SPL ships an update every 6 months, mRecall every 3 months. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 6 level
SPL versus mRecall: the parameters behind the verdict, then further details
ParameterSPLmRecall
Price$8.99Free — better
Rating3.0 (4 ratings)5.0 (3 ratings) — better
Positive reviews67.6% of reviews—
Number of ratings4 — better3
Update frequencyEvery 6 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size29 MB35 MB
Age rating4+4+
DeveloperAndrew SmithWaves Inc.

Customer experience

SPL

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews34 reviews
Positive67.6%
Neutral8.8%
Negative23.5%

mRecall

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SPL

No in-app purchases

None

mRecall

No in-app purchases

Questions

Is SPL free?
SPL costs $8.99, with no in-app purchases.
Is mRecall free?
mRecall is free to download, with no in-app purchases.
Which has better reviews, SPL or mRecall?
mRecall is rated higher. SPL averages 3.0 out of 5 from 4 ratings, while mRecall averages 5.0 from 3 ratings.
Do SPL or mRecall have ads?
Neither SPL nor mRecall shows ads.
Which is updated more often, SPL or mRecall?
SPL ships an update every 6 months, and mRecall every 3 months. Most recently, SPL was updated on October 15, 2026 and mRecall on October 1, 2026.

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