Comparison

Analyzer vs SL CastShift

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

Head to head
About

Analyzer

This app combines a sound pressure level meter with a multi-band frequency analyzer. It's designed for audio professionals and enthusiasts to evaluate acoustic environments, test equipment, and analyze sound in various settings. Offers advanced features and calibration options for accurate measurements.

Highlights
  • SPL meter with A, B, C, Z weighting
  • Realtime audio analyzer (RTA)
  • Selectable bandwidth up to 1/1200 octave
  • FFT analysis with selectable block size
  • Signal generator (pink/white noise, sine)
  • Touch gesture zoom and reticle functionality
  • Store, load, and export measurement data
Features
Read full description

The Analyzer is a combination of a sound pressure level (SPL) meter and a full range multiple bands frequency analyzer. It is mainly designed for audio professionals who need to evaluate different working environments (e.g. studios, live stages)... that’s why it’s perfect for anyone who’s in need of acoustical analysis!! It is easy to use and comes with amazing features only known from professional acoustic tools. Use the Analyzer for measuring stages, testing speakers, setting up your hi-fi system, evaluating sound mixing environments, analyzing your instrument... or for measuring the noise your neighbor makes with his new stereo! The Analyzer is pre-calibrated for all iDevices, but it includes a calibration function as well. It comes with a highly intuitive user interface with zoom gesture control, individual color settings, reticle zoom and many more exciting features. The Analyzer can store, load and export measurement data and supports iCloud storage. Combine the Analyzer with external microphones such as the MicW i436 or Microtech M372 for better measurement performance! Or use it with external USB audio hardware like the RME Fireface UCX or the Alesis IO dock, change the measurement scale to dB (FS) and use it as a studio Realtime Analyzer! ANALYZER FEATURES SPL Meter: - SPL measurement weighting functions: A B C Z - Industry standard response times: impulse, fast and slow - Meter switchable to dB FS for measuring with external USB interface - Pre-calibrated for all available iOS devices Realtime Audio Analyzer (RTA) audio engine: - Bandwidth selectable from 1 octave up to 1/1200 octave (depending on your iDevice) - FFT block size from 1024 to 65536 samples - 6 different FFT window functions - Leq measurement - Automatic peak detection - Signal generator: pink and white noise, sine - Manual and automatic calibration - Frequency response compensation for different mic characteristics of the built-in microphones RTA graphics: - Touch gesture zoom - Reticle with lens functionality - Bar or FFT line view - User definable graph colors - Create up to 14 snapshots with hold, Leq, or snapshot function - Workspace concept: store all current snapshots and color settings - Snapshot and workspace storage, load and export - iCloud support: move files between local and iCloud storage - Export to .csv oder .png files: share them via Mail, Dropbox, iTunes etc. - Import of .csv files AVAILABLE AS IN-APP PURCHASES: - Frequency response compensations for Mic-W i436 (with individually adjustable sensitivity), i266, i456, i825, i855, iShotgun and the Apple EarPods

About

SL CastShift

Read full description

Give your audio a different voice. SL CastShift is an AUv3 audio effect for iPhone and iPad that combines six transmission and media characters in one sound-design workflow: Radio, Phone, TV, Walkie, Megaphone and Codec. Start with 18 factory presets, three for each mode. Shape the result with Drive and Mix, high-pass and low-pass filters, Bass, Mid and Treble, then add Age, Distort, Bitcrush, Noise, Wow and ambience. Each preset recalls the complete sound. The AI control blends local adaptive processing using embedded neural models. Processing runs on your device, with no cloud inference or model download. Use CastShift as an AUv3 effect on an audio track in a compatible host. Feed it vocals, instruments, loops or sound effects and compare the six modes. This is an audio effect, not a MIDI instrument: it needs an audio source. The interface adapts to iPhone portrait and landscape, iPad and compact host windows. The standalone app does not automatically enable microphone-to-speaker monitoring. For processing audio from another music app, load the AUv3 extension in a compatible host.

Screenshots

Analyzer4 screens
SL CastShift3 screens

Verdict

The call

The clearest difference is in-app purchases: SL CastShift at none against Analyzer's 10. SL CastShift also leads on update cadence (every 9 days vs every 6 weeks). Analyzer's advantage is price ($14.99 vs $19.99) and iOS requirement (12.4 vs 15.0). On ads 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

Analyzer costs $14.99 and SL CastShift $19.99 up front. Analyzer sells 10 one-off in-app purchases. SL CastShift asks for nothing beyond the download.

UpkeepUpdate frequency

Analyzer ships an update every 6 weeks, SL CastShift every 9 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
Analyzer versus SL CastShift: the parameters behind the verdict, then further details
ParameterAnalyzerSL CastShift
Price$14.99 — better$19.99
Rating2.9 (11 ratings) — better—
Positive reviews47.3% of reviews—
Number of ratings11 — better—
Update frequencyEvery 6 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.4 — better15.0
Further details — not scored
Size23 MB19 MB
Age rating4+4+
DeveloperDSP MobileVIACHESLAV ZHILTSOV

In-app purchases

10 purchases

Analyzer

One-time10
  • Apple Earphones$2.99
  • built-in microphones bundle$2.99
  • Apple In-Ear Headphones$2.99
Show 7 more
  • Apple EarPods$2.99
  • MicW i456$7.99
  • MicW i266$7.99
  • EDUTIGE EIM-003$7.99
  • MicW i436$9.99
  • Røde smartLav$9.99
  • TASCAM iM2$9.99
None

SL CastShift

No in-app purchases

Questions

Is Analyzer free?
Analyzer costs $14.99, and also offers in-app purchases.
Is SL CastShift free?
SL CastShift costs $19.99, with no in-app purchases.
Do Analyzer or SL CastShift have ads?
Neither Analyzer nor SL CastShift shows ads.
Which is updated more often, Analyzer or SL CastShift?
Analyzer ships an update every 6 weeks, and SL CastShift every 9 days. Most recently, Analyzer was updated on October 26, 2026 and SL CastShift on October 25, 2026.

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