Droon vs Shruti Bot
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Droon
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Droon is an immersive drone instrument designed for musicians, meditation, yoga, focus, relaxation, and winding down. Choose a key and explore five moon voices, each with its own evolving tone and character. Shape the sound using moon phases, register, intensity, breath, tuning, and volume controls. FEATURES • Five moon voices: Mimas, Europa, Titan, Io, and Binaural • Twelve chromatic keys with enharmonic note names • Four registers, from Low to Very High • Adjustable intensity, breath, volume, and tuning • Five moon phases for additional tonal variation • Binaural beat options including Delta, Theta, Alpha, Beta, and Gamma • Sleep timer with a gentle fade-out • Built-in metronome for steady practice • Space, desert, and forest visual environments • Background audio support for uninterrupted listening Use Droon as a practice drone, meditation companion, ambient soundscape, tuning reference, or calming nighttime ritual. Use headphones for the full binaural experience, choose a moon, and let the sound evolve.
Shruti Bot
This app simulates a tunable shruti box with ten reeds and adjustable bellows for dynamic sound. It offers a unique approach to intonation and includes various effects like LFOs, resonance, chorus, and tape delay.
- Tunable shruti box simulation
- Ten reeds with just intonation
- Adjustable bellows for dynamic volume and tremolo
- Independent mixer fader per reed
- Customizable tonic and microtonal tuning
- Two free-running LFOs per reed for tuning and level
- Integrated resonance, chorus, tape delay, and reverb effects
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Shruti Bot is a shruti box you can actually tune. Ten reeds, laid out the way a real box is — the low Pa and Sa drone pair, the full middle saptak from Sa to Ni, and the upper Sa. Every reed sits at its just-intonation ratio against the tonic, not the tempered approximation, so the drone locks together the way the instrument is supposed to. Pull up the bellows and it breathes. At zero no air moves at all and the box is silent; push it up and the drone gets louder and pumps harder, until the breathing turns into an audible tremolo riding on top of the tone. Pressure opens the timbre as well as the volume, so a stroke sounds like air moving rather than a fader going up. THE REEDS • Ten stops — Pa and Sa below, Sa Re Ga Ma Pa Dha Ni across the middle, Sa above • Just intonation throughout — 3/2, 9/8, 5/4, 4/3, 5/3, 15/8 against the tonic • A tapered tuning peg on every reed, plus or minus 100 cents, turned by hand • Detune two neighbouring reeds and they beat against each other — real acoustic summing, not an effect • A mixer fader per reed, independent of the stops, for balancing what's already sounding THE KEY • Any tonic across all twelve pitch classes, octaves 1 through 6 • A peg for each key, arranged as a keyboard • Every pitch class keeps its own microtonal trim, so you can build a tuning that isn't twelve-tone equal temperament and it stays put • The current note and its offset are always on screen MOVEMENT • Two free-running LFOs on every reed — one for tuning, one for level • They run at their own rates and drift in and out of phase, so the beating keeps reorganising and the drone never quite repeats • Set them slow and the box simply sounds alive THE CHAMBER • A swept resonance that moves like a body cavity rather than a filter sweep • Stereo chorus, the point where the drone opens out of the centre • Tape delay with a real moving head — sliding the time bends the pitch the way tape does, and the repeats darken as they recirculate • Plate-style reverb from a quarter second to six TWO INSTRUMENTS Tap the logo. Shruti Bot 2 replaces the reeds with four analogue oscillators — sine, triangle, saw and pulse — with phase shaping on each, from slow comb sweeps to full PWM. Everything else carries straight over: the same tuning, the same reeds switched on, the same effects. Only the sound source changes. No accounts. No subscriptions. No ads. No network. Nothing leaves your device.
Screenshots
Verdict
The clearest difference is price: Shruti Bot at $1.99 against Droon's $2.99. Droon's advantage is iOS requirement (15.0 vs 17.0). 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
Droon costs $2.99 and Shruti Bot $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Droon | Shruti Bot |
|---|---|---|
| Price | $2.99 | $1.99 — better |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 8 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 22 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Christopher Curtis | Scott Hsiung |
In-app purchases
Droon
No in-app purchases
Shruti Bot
No in-app purchases









