# SrutiBox vs Fluss

The clearest difference is price: SrutiBox at $1.99 against Fluss's $13.99. SrutiBox also leads on iOS requirement (7.1 vs 12). Fluss's advantage is rating (4.8 vs 4.3) and ratings volume (72 vs 11). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

SrutiBox costs $1.99 and Fluss $13.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Fluss holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Fluss has 72 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 76% of SrutiBox's written reviews are positive against 78% of Fluss's.

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on November 7, 2026.

## The numbers

| Metric | SrutiBox | Fluss |
| --- | --- | --- |
| Price | **$1.99** | $13.99 |
| Rating | [4.3 (11 ratings)](https://appshunter.io/ios/app/srutibox/id288419651/reviews) | **[4.8 (72 ratings)](https://appshunter.io/ios/app/fluss-granular-playground/id6443472888/reviews)** |
| Number of ratings | 11 | **72** |
| Positive reviews | 76.0% of reviews | **78.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Paid | Paid |
| Size | 13 MB | 453 MB |
| Requires iOS | **7.1** | 12 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Henry Lowengard](https://appshunter.io/developer/288419654) | [Bram Bos](https://appshunter.io/developer/325340444) |

## What reviewers say

### SrutiBox

[App page](https://appshunter.io/ios/app/srutibox/id288419651)

This app simulates an Indian harmonium, generating drones with customizable timbres and precise intonations. It offers a realistic bellows-pumping feature and can be used for musical practice, spiritual chanting, or as a tuning aid.

**Highlights:** Indian harmonium simulation, Customizable drone timbres, Precise intonation control, Background audio playback, Bellows-pumping realism, Pitch source for tuning

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🎶 Great for ambient music
- 🎧 Useful for practicing singers
- 💡 Innovative sound creation
- 🎚️ Flexible interval customization
- ✨ Produces wonderful sounds

**What reviewers complain about**

- 🔊 Low volume without amplifier
- 💸 Waste of money for some
- ❌ Doesn't sound like Shruti box
- 👎 Not user-friendly interface
- 🔌 Battery drain in background

**Reported bugs**

- Background battery drain
- iPhone overheating
- Audible glitches when changing sliders
- Clicks when changing some settings

**Requested features**

- Audiobus support
- Built-in sleep timer
- Echo effect
- Preset for Tanbura
- Distort waveform for Tanbura sound


### Fluss

[App page](https://appshunter.io/ios/app/fluss-granular-playground/id6443472888)

Explore granular synthesis with a tactile interface. Import, record, or live-process audio to create unique sound textures, drones, and echoes. Features kinetic sliders for dynamic modulation and a unique shimmer feedback effect.

**Highlights:** Granular synthesis engine, Import, record, or live process audio, Kinetic sliders for modulation, Shimmer feedback effect, MIDI playable, Oberheim Xpander inspired filter, Microtonal experiment support

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Innovative touch interface
- 🎶 Great for soundscapes
- ✨ Unique sound manipulation
- 🎛️ Intuitive controls
- 🎵 Highly playable instrument

**What reviewers complain about**

- 🐛 Crashes frequently
- ⚫ Black screen issue
- 🎧 No audible output
- 🎛️ Not enough control
- 😵 Too much chaos

**Reported bugs**

- Crashes with black screen
- No audible output
- App resets when put in background
- Cyan play head difficult to see on waveform

**Requested features**

- Adjustable layer field per grain
- Record from internal microphone
- More control over grain direction
- BPM settings
- Transition from clean to new sounds


## Frequently asked questions

### Is SrutiBox free?

SrutiBox costs $1.99, with no in-app purchases.

### Is Fluss free?

Fluss costs $13.99, with no in-app purchases.

### Which has better reviews, SrutiBox or Fluss?

Fluss is rated higher. SrutiBox averages 4.3 out of 5 from 11 ratings, while Fluss averages 4.8 from 72 ratings.

### Do SrutiBox or Fluss have ads?

Neither SrutiBox nor Fluss shows ads.

### Which is updated more often, SrutiBox or Fluss?

SrutiBox ships an update every 3 months, and Fluss every 3 months. Most recently, SrutiBox was updated on November 7, 2026 and Fluss on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*