Comparison

SlowSolo vs M/S Processor 2

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

Head to head
About

SlowSolo

Features
Read full description

Hear a solo you want to learn, but you have no audio file to import? Hold your iPhone to the speaker, record it, and practise it slowly. - Record from a speaker with one tap - Automatic mastering evens out the sound of a phone recording and reduces hiss between notes - High-quality slow-down from 50 % to 100 % without changing the pitch - Repeat a phrase: set Start and End, drag the markers on the waveform, fine-tune by 10 ms - Speed and loop are remembered for every recording - Keeps playing with the screen locked; play/pause from the lock screen and AirPods - Share the slowed-down audio - Everything happens on your iPhone. No account, no ads, nothing is uploaded. Only record audio you have the right to use for your own practice.

About

M/S Processor 2

This app allows you to manipulate the mid and side components of a stereo audio signal. You can adjust their levels, mute them, or flip their polarity before recombining them. It functions as an Audio Unit (AUv3) within music production hosts or as a standalone application.

Highlights
  • Mid/side stereo signal splitting
  • Independent level control for mid and side
  • Mute and polarity flip for mid/side
  • Inline, decode, and encode modes
  • Automation support
  • Adaptable layout for various screen sizes
Features
Read full description

Your stereo image, in two parts. M/S Processor 2 splits a stereo signal into its mid (what both sides share) and its side (what sets them apart), lets you turn each up or down, mute it or flip its polarity, and puts them back together. Rebuilt from the ground up, it runs as an Audio Unit (AUv3) inside GarageBand, AUM, Logic Pro and any other host, and on its own with an audio interface. THREE WAYS IN AND OUT • Inline: left and right in, left and right out. Widen a mix, narrow it, or bring a centered voice forward. • Decode: record with a mid/side microphone pair, a cardioid facing the source and a figure-8 across it, and hear it as left and right while you play. • Encode: turn left and right into mid and side for the effects that come after it, and decode them back at the end of the chain. EVERY PART UNDER YOUR HAND • A fader for the mid and one for the side, from −48 to +24 dB, each over its own meter. • Mute and polarity for each, and a link that moves both gains together. • Swap left and right before anything else, and bypass to compare. • Input and output meters named by what they carry, L and R or M and S, with held peaks and clip indicators. • Every control can be automated from your host. • A notice when the input is mono, which leaves the side with nothing to work on. MADE FOR EVERY SCREEN M/S Processor 2 lays itself out for the space it's given: an iPhone upright or sideways, an iPad, iPhone Duo folded or open, and a plugin slot in a host, from GarageBand's compact strip to a whole panel. QUIET BY DEFAULT On its own, the app starts with its output muted, so a microphone never feeds back through the speaker next to it. A LONG STORY Alan Blumlein described mid/side recording in his 1931 stereo patent, and engineers have relied on it ever since. M/S Processor first came to the iPad in 2013; this is its second life. From Monolith DSP. Terms of Use: https://monolith-dsp.com/terms/ Privacy Policy: https://monolith-dsp.com/privacy/

Screenshots

SlowSolo4 screens
M/S Processor 24 screens

Verdict

The call

SlowSolo and M/S Processor 2 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
SlowSolo versus M/S Processor 2: the parameters behind the verdict, then further details
ParameterSlowSoloM/S Processor 2
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone, iPad — better
Requires iOS17.017.0
Further details — not scored
Size2 MB44 MB
Age rating4+4+
DeveloperOskar KunickiRuben Nine Blanco

In-app purchases

None

SlowSolo

No in-app purchases

None

M/S Processor 2

No in-app purchases

Questions

Is SlowSolo free?
SlowSolo is free to download, with no in-app purchases.
Is M/S Processor 2 free?
M/S Processor 2 is free to download, with no in-app purchases.
Do SlowSolo or M/S Processor 2 have ads?
Neither SlowSolo nor M/S Processor 2 shows ads.

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