Comparison

Otoo vs 16 Drones

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Otoo

This music creation app offers a unique free-form sequencer for building beats and melodies. It supports built-in sounds, sampling, and AUv3 instruments, with live performance effects and song arrangement tools.

Highlights
  • Free-form step sequencer
  • Single-screen workflow
  • Built-in sounds and sampler
  • AUv3 instrument support
  • Performance Mode effects
  • Export WAV, MP3, and MIDI
Features
Currently charting
Read full description

Otoo is a streamlined, one-screen groovebox designed for frictionless music production. Built around an innovative free-form step sequencer, Otoo breaks away from rigid grids, allowing you to place, drag, and stack notes freely across independent rows. Whether you are sketching out ideas using the native built-in engine and sampler or hosting your favorite third-party AUv3 plugins, Otoo delivers a distraction-free environment that prioritizes speed and musical flow. On iPhone, the interface dynamically scales to give your AUv3 instruments a near-fullscreen home, paired with a compact, highly responsive keyboard for immediate creation on the go. Otoo also includes Otoo MIDI, an AUv3 MIDI processor version of the app. It brings Otoo’s pattern-based sequencing into compatible AUv3 hosts, where playback follows the host timeline and instruments are routed as MIDI Out destinations instead of audio instruments. Distraction-Free Workflow • The single-screen layout keeps your sequence, arrangement and mixer visible at all times so you never have to dive into menus. • A free-form step sequencer lets you place, drag, and stack notes across any row without rigid instrument or track restrictions. • Step editing mode gives you precise control over note length, velocity, and timing subdivisions. • The gesture-driven mixer allows for quick volume adjustments, muting, and soloing directly from the main grid. • 4 rows on iPhone and 5 on iPad, with multiple instruments available in each row at different steps 
• 2-octave keyboard for playing and learning real notes Sounds and plug-ins 
• Up to 8 instruments per project
 • Built-in sounds and sampler
 • Use any installed AUv3 instruments in a large, near-fullscreen view with a compact keyboard 
• Up to 2 AUv3 effects per instrument
 • Sampler with instant key-by-key recording and chromatic mapping Patterns to full songs
 • Build songs from simple patterns
 • Draggable loop markers for quick arrangement changes Performance mode
 • Live sequencer and audio effects such as reverse, beat repeat, randomize, swing, triplet, tape, and more
 • Play the pattern like a keyboard by tapping steps directly Other features • Main output with built-in level protection • Automatic metronome when recording live into empty patterns • Export patterns or full songs as WAV or MP3 for easy sharing • Export performances as perfect loops • MIDI export • Supported time signatures: 4/4, 3/4, 4/4T and sequencer swing.

About

16 Drones

Create evolving soundscapes and harmonic textures with a powerful ambient drone synthesizer. Shape layered drones using custom wavetables and envelopes, then perform expressively in key. Offers deep timbral control and flexible MIDI integration.

Highlights
  • 16 drone voices for layered textures
  • Custom wavetable synthesis
  • Per-voice drone envelopes
  • Subtractive synthesis layer
  • Expressive in-key performance voice
  • Support for musical scales
  • Standalone and AUv3 operation
  • MIDI input and learn
Features
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16 Drones is an ambient drone synthesizer built for evolving textures, harmonic soundscapes, and expressive in-key performance. Shape layered drones with a custom wavetable engine, per-voice controls, per-voice custom drone envelopes, and an additional subtractive layer. Then perform on top with a dedicated Play voice that stays in the same scale. Designed to be deep but immediate, 16 Drones gives you rich timbral control, musical scale exploration, expressive performance options, flexible MIDI workflow, and both standalone and AUv3 operation. Features: 16 drone voices for layered evolving textures Custom wavetable synthesis with per-voice control Per-voice custom drone envelopes for motion and character An additional subtractive layer for extra depth and weight A dedicated Play voice for expressive in-key performance Rich musical and exotic scales Standalone app and AUv3 instrument support MIDI input support for performance and control MIDI Learn for fast hardware mapping Aftertouch expression support, including polyphonic aftertouch Factory presets for fast inspiration

Screenshots

Otoo4 screens
16 Drones4 screens

Verdict

The call

The clearest difference is review sentiment: Otoo at 100% against 16 Drones's 50%. Otoo also leads on in-app purchases (none vs 1) and rating (5.0 vs 4.7). 16 Drones's advantage is price (Free vs $6.99). On ratings volume, ads 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

CostPrice · In-app purchases · Ads · Monetization

16 Drones is free to download; Otoo costs $6.99 up front. 16 Drones sells 1 one-off in-app purchase. Otoo asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Otoo holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 28 and 12 respectively. Written reviews point the same way: 100% of Otoo's written reviews are positive against 50% of 16 Drones's.

UpkeepUpdate frequency

Otoo ships an update every 6 days, 16 Drones every 2 weeks. The most recent releases landed on September 21, 2026 and August 1, 2026 respectively.

Scorecard8 real differences · 3 level
Otoo versus 16 Drones: the parameters behind the verdict, then further details
ParameterOtoo16 Drones
Price$6.99Free — better
Rating5.0 (28 ratings) — better4.7 (12 ratings)
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings28 — better12
Update frequencyEvery 6 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#136 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size64 MB8 MB
Age rating4+4+
DeveloperBeepStreetRuben Terron Rodriguez

Customer experience

Otoo

All ratings28 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews20 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

16 Drones

All ratings12 ratings
Positive91.7%
Neutral0.0%
Negative8.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Otoo

No in-app purchases

1 purchases

16 Drones

One-time1
  • 16 Drones Pro$11.99

Questions

Is Otoo free?
Otoo costs $6.99, with no in-app purchases.
Is 16 Drones free?
16 Drones is free to download, with in-app purchases available.
Which has better reviews, Otoo or 16 Drones?
Otoo is rated higher. Otoo averages 5.0 out of 5 from 28 ratings, while 16 Drones averages 4.7 from 12 ratings.
Do Otoo or 16 Drones have ads?
Neither Otoo nor 16 Drones shows ads.
Which is updated more often, Otoo or 16 Drones?
Otoo ships an update every 6 days, and 16 Drones every 2 weeks. Most recently, Otoo was updated on September 21, 2026 and 16 Drones on August 1, 2026.

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