Comparison

Scale Numbers Piano vs Midi Controller

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

Head to head
About

Scale Numbers Piano

Compose melodies and chords simultaneously on your device. Record and loop your creations for improvisation and songwriting. Learn music theory and play popular songs with a unique scale number system, no prior knowledge needed.

Highlights
  • Play melody and chords together
  • Record and live loop compositions
  • Theory lessons and songbook
  • Scale number system for easy learning
  • Built-in sampler instruments
  • MIDI input for DAWs
Features
Read full description

This app lets you play melody and chords at the same time on your iPhone or iPad. Record and live loop your compositions for improvising or songwriting. Included theory lessons and songbook with hundreds of famous tunes which you can play with no previous music theory background. Great for songwriters, singers, producers, music students or if you just want to play some recognisable tunes. The whole app is based around simple scale numbers, which are the gold standard for understanding music. Either use the built-in sampler instruments to play on your device, or connect to your DAW for full midi input to your favourite synths. See a demo video of the app's features at scalenumbers.com __ Scalenumbers does not collect any user data: https://scalenumbers.com/termsandprivacy __ If you're having an issue, please email me at support@scalenumbers.com rather than leaving a review, as apple doesn't send developers any alerts when reviews are left, so I won't know you've tried to contact me.

About

Midi Controller

Transform your iPhone or iPad into a versatile MIDI controller. Send notes, control changes, and program changes wirelessly or via USB to any compatible DAW or hardware. Customize your workspace with unlimited, dynamic controls.

Highlights
  • USB, WLAN, and Bluetooth connectivity
  • Customizable buttons, pads, and sliders
  • Send Notes, CC, and Program Change values
  • Works with macOS and CoreMidi compatible hardware
  • No additional software required
  • Dynamic control creation
Features
Read full description

MidiController turns your iPhone/iPad into a complete MIDI controller, that works over USB, WLAN or Bluetooth. No additional software needed! Send all possible Notes, Continuous Controller / Control Change and Program Change values to the connected device. Build your workspace from the ground up with unlimited, custom Pushes/Buttons and Sliders. All Pushes/Buttons and Sliders are completely customisable - customize every value of every control possible and how the control behaves. You can even create dynamic controls (e.g. Program Change values that count up or down). • Works with every macOS: From 10.5 (Leopard) up to the newest 10.15 (Catalina) • Works on every iPhone and iPad • Also works with external hardware (e.g. synths,...) that supports Apple (CoreMidi) • If your hardware/PC does not support CoreMidi, you can use an iPhone/iPad compatible MIDI-Interface as bridge to make MidiController work with ALL MIDI devices Works with every application that supports MIDI-Input. Example DAWs (Digital Audio Workstation): * Logic X Pro * Ableton Live * Avid Pro Tools * Propellerhead Reason * Steinberg Cubase * Cockos Reaper * and many more (in principle every application that supports midi input) ** NOTES ** • MidiController does not play any sound itself, it only sends out MIDI-Information to connected devices. • MidiController is primary created to work with macOS-Devices. If you want to use MidiController with hardware that does not support Apple CoreMidi, you might need an iPhone/iPad compatible MIDI-Interface as bridge. A MIDI interface typically connects to your iOS per lightning port and provides standard MIDI DIN ports to connect to your hardware. There are also bluetooth MIDI interfaces that connect wirelessly. • MidiController does not receive any MIDI-Information, it generates and sends them itself depending on the user-input. ______________________________________________ APP USAGE INFO & MIDI CONTROLLER SUBSCRIPTION DETAILS Should you choose to upgrade to a midi controller subscription, payment will be charged to your iTunes account at confirmation of purchase. Your subscription renews automatically unless cancelled at least 24 hours prior to the end of the current period, and cancellation of the current active subscription period is not allowed. Auto-renewal may be turned off in your Account Settings in iTunes after purchase. You can also manage your subscriptions in Account Settings after purchase. LICENSED APPLICATION END USER LICENSE AGREEMENT: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Midi Controller Terms of Service: https://learned-romano-d09.notion.site/Terms-Conditions-9fc801bf71f94e4cae7b31b72c7e13e3 Midi Controller Privacy Policy: https://learned-romano-d09.notion.site/Privacy-Policy-ee4011f149ac417bbedbfea3f0250a96

Screenshots

Scale Numbers Piano4 screens
Midi Controller4 screens

Verdict

The call

The clearest difference is update cadence: Scale Numbers Piano at fortnightly against Midi Controller's every 7 months. Scale Numbers Piano also leads on review sentiment (65% vs 41%). Midi Controller's advantage is ratings volume (42 vs 12). On price, rating, ads and in-app purchases 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. Scale Numbers Piano sells 1 one-off in-app purchase and Midi Controller sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.2 for Scale Numbers Piano against 4.1 for Midi Controller. Both are backed by a comparable volume of ratings — 12 and 42 respectively. Written reviews are what separate them: 65% of Scale Numbers Piano's written reviews are positive against 41% of Midi Controller's.

UpkeepUpdate frequency

Scale Numbers Piano ships an update fortnightly, Midi Controller every 7 months. Both last shipped on November 3, 2026.

Scorecard3 real differences · 7 level
Scale Numbers Piano versus Midi Controller: the parameters behind the verdict, then further details
ParameterScale Numbers PianoMidi Controller
PriceFreeFree
Rating4.2 (12 ratings) — better4.1 (42 ratings)
Positive reviews65.0% of reviews — better40.9% of reviews
Number of ratings1242 — better
Update frequencyFortnightly — betterEvery 7 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size340 MB11 MB
Age rating4+4+
DeveloperScale Degrees LTDMizo LLC

Customer experience

Scale Numbers Piano

All ratings12 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews20 reviews
Positive65.0%
Neutral5.0%
Negative30.0%

Midi Controller

All ratings42 ratings
Positive76.2%
Neutral7.1%
Negative16.7%
Written reviews22 reviews
Positive40.9%
Neutral18.2%
Negative40.9%

In-app purchases

1 purchases

Scale Numbers Piano

One-time1
  • Full Version$2.99
2 purchases

Midi Controller

Subscriptions1
  • Monthly: MIDI Controller7 Days trial$3.991 Month
One-time1
  • Lifetime: MIDI Controller$29.99

Questions

Is Scale Numbers Piano free?
Scale Numbers Piano is free to download, with in-app purchases available.
Is Midi Controller free?
Midi Controller is free to download, with in-app purchases available.
Which has better reviews, Scale Numbers Piano or Midi Controller?
Scale Numbers Piano is rated higher. Scale Numbers Piano averages 4.2 out of 5 from 12 ratings, while Midi Controller averages 4.1 from 42 ratings.
Do Scale Numbers Piano or Midi Controller have ads?
Neither Scale Numbers Piano nor Midi Controller shows ads.
Which is updated more often, Scale Numbers Piano or Midi Controller?
Scale Numbers Piano ships an update fortnightly, and Midi Controller every 7 months. Most recently, Scale Numbers Piano was updated on November 3, 2026 and Midi Controller on November 3, 2026.

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