JAX SPECTRO Series vs RetroAMP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JAX SPECTRO Series
This application provides real-time spectral analysis of audio streams, dividing them into 128 chromatically mapped frequency bands across the MIDI note range. It visualizes these bands in a musical semitone scale, offering detailed frequency analysis for music production and study.
- Real-time spectral analysis
- 128 frequency bands
- Chromatically mapped bands
- Musical semitone scale visualization
- MIDI note range coverage
- Universal build for Apple devices
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Note: AudioUnits (AUv3) require a supporting host application to perform. JAX SPECTRO SERIES AudioUnits (AUv3) are special spectral processors, which divide the audio stream in 128 frequency bands. These bands are chromatically mapped and visualized consequently in the scale of musical semitones across the entire MIDI notes range. These tools are useful for frequency analysis in a musical context. This build is truly 'universal', meaning, unit is available for: - MacOS (Apple Silicon) - iOS (iPhone) - iPadOS (iPads) - visionOS (Apple Vision Pro) Please note, that the MacOS Catalyst (Intel) versions may be sold separately, as the AppStore does not allow to bundle none-silicon apps.
RetroAMP
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RetroAMP is a cloud music player inspired by the golden age of desktop media players — reimagined for iPhone. Sign in and instantly access your personal music library stored in the cloud. No syncing cables, no storage limits on your device. Just your music, streamed anywhere. FEATURES • Cloud Library — Browse your songs, albums, and playlists streamed from your personal cloud storage • Internet Radio — 30+ curated stations from SomaFM, covering chillout, electronic, indie, jazz, ambient, and more • 10-Band Equalizer — Fine-tune your sound with presets like Pop, Rock, Jazz, Classical, or create your own • Reverb Engine — Add depth with Hall, Plate, Room, Cathedral, and other reverb presets • Real-Time Visualizations — Spectrum analyzer, circular spectrum, VU meters, and particle effects that react to your music • 7 Themes — Linen, Sterling, Mixtape, Boombox, Audiophile, Midnight Neon, and Retro Amber. Each transforms the entire interface • Now Playing Queue — Manage your queue, shuffle, repeat, and see what's coming next • Gapless-quality streaming with seek support and range requests BUILT FOR MUSIC LOVERS RetroAMP brings back the experience of customizable music players — the themes, the visualizations, the EQ sliders — in a modern, cloud-first package. No ads. No algorithmic recommendations. Just your music and a beautiful player. Requires a RetroAMP account. Create one for free in the app.
Screenshots
Verdict
The clearest difference is price: RetroAMP at Free against JAX SPECTRO Series's $5.99. JAX SPECTRO Series's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.0). On 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
RetroAMP is free to download; JAX SPECTRO Series costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | JAX SPECTRO Series | RetroAMP |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 28 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Jens Guell | Rishabh TANDON |
In-app purchases
JAX SPECTRO Series
No in-app purchases
RetroAMP
No in-app purchases
Questions
Is JAX SPECTRO Series free?
Is RetroAMP free?
Do JAX SPECTRO Series or RetroAMP have ads?
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