rrarrow vs Koto Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
rrarrow
Create experimental audio effects with extended feedback capabilities. This modular noise machine offers a simplified interface for fast assembly and flexible connectivity, allowing you to control processing parameters with the audio signal itself.
- Modular audio effect processing
- Extended feedback capabilities
- 20 audio processing blocks
- Built-in audio recorder
- MIDI controller support
- Audiobus and Inter-App Audio support
- Background audio playback
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rrarrow is the experimental noise machine / modular audio effect for the iOS featuring extended feedback capabilities. Key features: - Simplicity. The interface is simplified for faster assembly and more flexible connectivity — you can assemble your effect very fast and control all the processing parameters with the audio signal! - Feedback capabilities. You can add feedbacks to the audio chain to get some chaotic noise sounds . - 20 blocks for audio processing: - Sine generator. Basic oscillator with sine waveform - Saw and square oscillators - Signal multiplier - Delay - Frequency shifter - Envelope follower - “Lorenz attractor” - Quantizer - Sample-and-hold - Reverb - Special Lowpass filter - Clipper - Nonlinear shaper (for self-oscillating circuit) - two special waveshaping modules with “fold” and “wrap” distortion blocks that work with audiofiles: - lookup table. Loads up to 10 seconds of audiofile to be used as nonlinear transfer function - Players with/without interpolation and speed control - "scrub" block for semi-random granular file playback - Built-in audio recorder. Share the audio file to other applications or AudioShare. - MIDI support! Assign MIDI controllers to all faders. Supports network midi and has a virtual MIDI in. - Audiobus support. Now you can stream live audio directly to other Audiobus-compatible apps! See http://audiob.us for more information. Works as input and filter. - Audiobus state saving support - Inter-App Audio support - Background audio support: enabled when connected to Audiobus and user switchable otherwise. The 'background audio" switch is located in app's "settings" page iPad2/iPhone4S or newer is recommended for complex presets this app is optimized for iPad and iPhone 5 To get started please watch the tutorial videos on the website and read the user guide inside the app
Koto Master
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The koto (箏) is a Japanese plucked half-tube zither instrument, and the national instrument of Japan. It is derived from the Chinese zheng and se, and similar to the Mongolian yatga, the Korean gayageum and ajaeng, the Vietnamese đàn tranh, the Sundanese kacapi and the Kazakhstan jetigen. Koto are roughly 180 centimetres (71 in) in length, and made from Paulownia wood (Paulownia tomentosa, known as kiri). The most common type uses 13 strings strung over movable bridges used for tuning, different pieces possibly requiring different tuning. 17-string koto are also common, and act as bass in ensembles. Koto strings are generally plucked using three fingerpicks (tsume), worn on the first three fingers of the right hand.
Screenshots
Verdict
The clearest difference is ads: rrarrow at none against Koto Master's shown. Koto Master's advantage is price ($2.99 vs $3.99) and iOS requirement (11.0 vs 15.6). On 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
rrarrow costs $3.99 and Koto Master $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | rrarrow | Koto Master |
|---|---|---|
| Price | $3.99 | $2.99 — better |
| Rating | 4.6 (19 ratings) — better | — |
| Positive reviews | 81.3% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 4 weeks | — |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexey Nadzharov | SENSOR NOTES JOINT STOCK COMPANY |
In-app purchases
rrarrow
No in-app purchases
Koto Master
No in-app purchases









