Roam Studio vs Harmonitron
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Roam Studio
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Roam Studio is a private workspace for music producers, DJs, and creators who want to organize, review, and share their work without social media, cloud lock-in, or unnecessary complexity. Built around your existing Dropbox storage, Roam Studio helps you keep track of mixes, masters, demos, and works in progress while maintaining complete ownership of your files. FEATURES • Dropbox-powered music library Browse and organize your music directly from Dropbox without uploading files to another platform. • Version tracking Keep multiple versions of a track together so you can compare changes over time and never lose track of your creative process. • Waveform visualization Analyze songs visually with detailed waveform views designed for critical listening and review. • Reference comparison Compare your mixes against reference tracks to evaluate balance, loudness, and frequency content. • Timestamped notes Leave feedback and production notes at specific moments in a song. • Share your work Generate clean showcase pages to share tracks, demos, and works in progress with collaborators, labels, and friends. • Privacy first No accounts. No tracking. Your music stays in your Dropbox. Whether you’re finishing a mix, preparing a release, collecting feedback, or simply organizing years of unfinished projects, Roam Studio provides a focused environment built for the music along the way.
Harmonitron
This app creates a rich, swirling harmonic tremolo effect, distinct from standard volume pulsing. It splits sound into low and high bands, modulating them in opposite phases for a lush, phaser-like character. Apply it to various instruments or full mixes as a standalone app or AUv3 effect.
- True harmonic tremolo with anti-phase modulation
- Voice control for morphing between classic and harmonic tremolo
- Split & Tilt for band crossover and balance
- Tube Drive and tone shaping
- Adjustable Rate and LFO Shapes
- Tempo Sync with musical note divisions
- Stereo Spread for auto-pan and width
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Harmonitron is a harmonic tremolo. The rich, swirling amp "vibrato" made famous by early-1960s brownface amplifiers. A normal tremolo just pulses your volume up and down. A harmonic tremolo goes deeper: it splits your sound into a low band and a high band, then sweeps them in OPPOSITE phase. As the lows swell, the highs dip and back again. That contrary motion is what gives Harmonitron its lush, watery, almost phaser-like character that an ordinary tremolo can't reach. Turn the Voice control and the effect morphs smoothly from a classic in-phase tremolo all the way to a full harmonic swirl. Drop it on guitars, keys, synths, pads, drums, or a whole mix. Standalone, or as an Audio Unit (AUv3) effect inside GarageBand, AUM, Logic, and other hosts. THE SOUND • True harmonic tremolo: anti-phase modulation of a low and high band • Voice: morph continuously from classic tremolo to full harmonic swirl • Split & Tilt: place the crossover and balance the two bands • Tube Drive and tone shaping for warmth and grit MOVEMENT • Rate from a slow tide to a fast flutter, shown in BPM • LFO Shape: sine, triangle, square, and ramp with adjustable edge Slope • Tempo Sync that locks to your project and lands on the beat, with musical note divisions from 1/1 to 1/32 (dotted and triplet) • Stereo Spread for auto-pan and rotary-style width HANDS-ON • A living hero orb whose two halves breathe in opposite phase — drag it to set Depth, tap to bypass • Grouped, color-coded controls: Motion, Sync, Harmonic, Stereo, Drive, Output • Factory presets: Brownface, Rotary Swirl, Slow Tide, Sync Chop, Wide Harmonic and more — plus your own saved presets PLUGIN & STANDALONE • Full AUv3 audio-effect support with host presets and parameter automation • Runs on iPhone, iPad, and Mac • Standalone mode with a built-in demo pad, live microphone input, or import a song and export the processed result
Screenshots
Verdict
The clearest difference is price: Roam Studio at Free against Harmonitron's $2.99. On ads, in-app purchases, device support and iOS requirement 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
Roam Studio is free to download; Harmonitron costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Roam Studio | Harmonitron |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 9 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 18 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Riley Napier | Konstantin Torsten Schutz |
In-app purchases
Roam Studio
No in-app purchases
Harmonitron
No in-app purchases









