Swar Detector vs Shruti Bot
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Swar Detector
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Sing a note. See the swar. Swar Detector listens to your voice or instrument and shows you the note you are on — big, clear, and instant. A ring around it turns from amber to green as you close in on true pitch, and bursts gold the moment you lock it. BUILT FOR RIYAZ Set your Sa to any key and octave, and every swar on screen re-maps to it. Practice in your own scale, the way you actually sing — not someone else's. सा रे॒ रे ग॒ ग म म॑ प ध॒ ध नि॒ नि The full twelve-note rail sits along the bottom, with your current note lit. Read it in Devanagari, or switch to Western names (C, D, E…) with one tap. SEE HOW CLOSE YOU ARE A live cents reading tells you exactly how sharp or flat you are — so you can hear the difference and fix it, note by note. FOR SINGERS AND PLAYERS Voice, harmonium, flute, sitar, guitar, violin — anything with a clear pitch. Useful for daily riyaz, for tuning, and for training your ear. QUIET AND PRIVATE No account. No ads. No network. Audio is analysed on your device and thrown away immediately — nothing is ever recorded, saved, or uploaded. Set your Sa and begin.
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: Swar Detector at Free against Shruti Bot's $1.99. 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
Swar Detector is free to download; Shruti Bot costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Swar Detector | Shruti Bot |
|---|---|---|
| Price | Free — better | $1.99 |
| 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 | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Vaibhav Gupta | Scott Hsiung |
In-app purchases
Swar Detector
No in-app purchases
Shruti Bot
No in-app purchases









