ab Astrometry X vs SoundScope
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ab Astrometry X
This advanced audio effect offers dynamic multitap delay with randomized tap positioning around the listener. Control tap viscosity, time, and loudness intuitively via an XY pad. Create custom delay lines by syncing to your DAW or using free time, in serial or parallel modes.
- Random tap positioning
- Viscosity, Time, and Loudness control
- Intuitive XY Pad design
- DAW sync or free time
- Serial or parallel mode
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ab Astrometry X is an Advanced Multitap Delay with random positioning of each tap around the listener's head. Each tap comes with a variables Viscosity, Time and Loudness controllable through an intuitive XY Pad Design. Each tap's time can be set to be synced to the DAW or with free time, in serial or parallel mode - allowing users to create custom and creative Delay lines.
SoundScope
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See what you hear. SoundScope turns your iPhone and iPad into a professional audio analyzer: a real-time spectrum analyzer, a broadcast-standard loudness meter and a mix assistant that tells you what to fix. All in one app. LOUDNESS, MEASURED PROPERLY • Momentary, short-term and integrated LUFS to ITU-R BS.1770 • True peak, loudness range (LRA), DR and PLR • Start, stop and reset a measurement whenever you need MIX DIAGNOSTICS • Clear alerts for clipping, true peak, streaming loudness, crushed dynamics and mono bass cancellation • Tonal balance checked against genre profiles: General, EDM, Hip-Hop, Classical, Rock, Acoustic and Podcast/Voice • See how far Spotify and YouTube will turn your track down, before you upload SPECTRUM ANALYZER • Real-time FFT from 20 Hz to 20 kHz with peak hold • Bar or line view, 20 to 120 bands, logarithmic or linear scale • FFT modes for transients, balance and mastering, with adjustable FFT size and overlap • Hold the spectrum to study a single moment FIVE FULL-SCREEN VISUALIZERS Turn your phone sideways for Spectrum Bars, Spectrum Line, Radial Bloom, Spectrogram and Ribbon Tunnel. Double-tap to switch views. STUDIO METERING • Dual VU meters with peak hold • Stereo image, phase correlation and left/right/mid/side spectra • Band RMS and mono compatibility for every band MADE TO BE USED • Eight color themes, including the per-frequency Spectrum rainbow. Swipe to change. • Built-in microphone or a connected audio interface, with adjustable sensitivity • A brushed-metal interface built for one-handed use PRIVATE BY DESIGN Everything runs on your device. No subscription, no account, no tracking and no internet connection needed. One purchase covers iPhone and iPad. Made for producers, mixing and mastering engineers, live sound engineers, musicians, podcasters and anyone who wants to see their sound.
Screenshots
Verdict
The clearest difference is price: SoundScope at $3.99 against ab Astrometry X's $12.99. SoundScope also leads on update cadence (every 3 weeks vs every 7 months). ab Astrometry X's advantage is iOS requirement (12.0 vs 26.1). 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
ab Astrometry X costs $12.99 and SoundScope $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ab Astrometry X ships an update every 7 months, SoundScope every 3 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.
| Parameter | ab Astrometry X | SoundScope |
|---|---|---|
| Price | $12.99 | $3.99 — better |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 7 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 9 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Alejandro Cabrera Zuniga | Waldemar Schneider |
In-app purchases
ab Astrometry X
No in-app purchases
SoundScope
No in-app purchases









