Comparison

Soundby vs MIDI MACHINE

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

Head to head
About

Soundby

Features
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SoundBy – Book Audio Engineers Near You. SoundBy connects artists with professional audio engineers for seamless studio bookings. Whether you’re recording your first single or finishing a full project, SoundBy makes it simple to discover, compare, and book trusted engineers in your area. Find the Right Engineer. Browse detailed profiles featuring: -Studio photos and equipment lists -Genres and specialties -Experience and credits -Pricing and availability -Verified reviews -Filter by location, style, budget, and session type to find the perfect match for your sound. Book Sessions Instantly. No more back-and-forth DMs. With SoundBy you can: -Check real-time availability -Request and confirm sessions -Securely pay through the app -Message your engineer directly Everything you need — in one streamlined workflow! Built for Artists & Engineers! For Artists: Discover reliable professionals, manage bookings, and focus on creating music. For Engineers: Showcase your studio, set your rates, manage your calendar, and attract new clients consistently. SoundBy is designed to remove friction from the recording process. Clear pricing, structured bookings, and direct communication ensure a professional experience for both sides. Whether you're an independent artist, songwriter, or producer, SoundBy helps you turn ideas into finished records — faster and easier. Download SoundBy and book your next session today.

About

MIDI MACHINE

Features
Read full description

MIDI MACHINE is a fast, playful performance tool built for generating MIDI melodies on the fly. At the heart of MIDI MACHINE are two creative states: SPARK and STRUCTURE. SPARK mode is all about discovery—rapidly generating fresh melodic ideas and happy accidents. 17 randomized melodic rows drawn from an vast internal library, everything is locked to your chosen key. Each melody is sliced into 10 playable parts, letting you remix and reshape ideas in real time without ever hitting a creative wall. STRUCTURE mode lets you compose and perform with intention and move seamlessly between key pairs to trigger chords. Additionally, genre-based chord-progression suggestions form a real progression from a selected genre, so you can play a coherent sequence. This mode is designed to serve users with and without knowledge of music theory. "Super inspiring tool for sketching melodies quickly, whether you’re in the studio or on the move with a minimal setup. You just start playing around and happy accidents happen."
— early user feedback Core Features * 17 MIDI melody rows per set, automatically harmonized to your chosen key * Each melody split into 10 playable tiles for real-time triggering of your favorite sounds * SPARK mode for instant idea generation and exploration * STRUCTURE mode for fixed chords mapped across key pairs, built in arpeggiator and chord group suggestions * Keep randomizing to generate endless new melodic combinations while keeping your settings * SAVE and recall full sets, including patterns, tempo, and performance modes (SPARK) * Note mode: trigger melodic sequences step-by-step * Chord mode: play full harmonies instantly * Loop ON / OFF: continuously cycle note sequences * Hold OFF: slide across tiles for fluid, continuous runs * Hold ON: trigger full sequences with a single tap * Repeat ON / OFF: retrigger tiles rhythmically (1/4 to 1/64) for pattern creation * Fixed velocity option for consistent dynamics * Edit individual tile MIDI sequences * Reverse entire rows * Octave shift up or down * Double or halve playback speed (Note mode) (STRUCTURE) * Group: Genre-based chord-progression suggestions. Highlights/labels tiles on the grid that form a real progression from the selected genre. * Arp: Turns a held chord into a rolling sequence of individual notes. • Style – 16 note-order patterns (Up, Down, Converge, Pinky Up, Random, etc.). • Rate – Speed of each note: 1/4 to 1/64, relative to BPM. • Groove – Straight (default) or Swing 8/16/32 for a more human rhythmic feel. * Hold OFF: slide across tiles for fluid, continuous runs * Hold ON: trigger full sequences with a single tap * Add automatic Bass Note to each chord * Repeat ON / OFF: retrigger tiles rhythmically (1/4 to 1/64) for pattern creation * Fixed velocity option for consistent dynamics Performance Controls * Global pitch shift in semitones for instant transposition of the entire set * Adjustable BPM with tap tempo and fine control * Flexible visible row count (5–17) for compact or expanded layouts * Scrollable row view with FIRST ROW selection MIDI MACHINE is built for musicians who want a different approach to creating ideas—fast, intuitive, and a little unpredictable. Whether you're sketching melodies or experimenting with generative patterns, it keeps everything playful, unique, and fun."

Screenshots

Soundby3 screens
MIDI MACHINE4 screens

Verdict

The call

The clearest difference is in-app purchases: Soundby at none against MIDI MACHINE's 1. Soundby also leads on iOS requirement (13.0 vs 18.6). MIDI MACHINE's advantage is ads (none vs shown). On price, update cadence 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

Both are free to download. MIDI MACHINE sells 1 one-off in-app purchase. Soundby asks for nothing beyond the download.

UpkeepUpdate frequency

Soundby ships an update every 9 days, MIDI MACHINE weekly. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 3 level
Soundby versus MIDI MACHINE: the parameters behind the verdict, then further details
ParameterSoundbyMIDI MACHINE
PriceFreeFree
Update frequencyEvery 9 daysWeekly — better
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better18.6
Further details — not scored
Size68 MB52 MB
Age rating4+4+
DeveloperKSENIA S PLASTININANiklas Koellner

In-app purchases

None

Soundby

No in-app purchases

1 purchases

MIDI MACHINE

One-time1
  • MIDI MACHINE Pro$4.99

Questions

Is Soundby free?
Soundby is free to download, with no in-app purchases.
Is MIDI MACHINE free?
MIDI MACHINE is free to download, with in-app purchases available.
Do Soundby or MIDI MACHINE have ads?
Soundby shows ads; MIDI MACHINE does not.
Which is updated more often, Soundby or MIDI MACHINE?
Soundby ships an update every 9 days, and MIDI MACHINE weekly. Most recently, Soundby was updated on October 8, 2026 and MIDI MACHINE on October 6, 2026.

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