ScaleMaster Pro vs Ember
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ScaleMaster Pro
Learn musical scales on your instrument with visual aids and adjustable tempo. Explore different scales, save your practice sessions, and discover new sounds for improvisation. Adapts to various instruments and tunings.
- Learn scales in notation and on instrument
- Adjustable tempo for practice
- Save custom scale documents
- Support for piano, guitar, bass, and more
- Custom tunings
- All common clefs for reading practice
- Scale transposition
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Just started piano lessons? Or maybe you picked up that cool looking headless guitar from an auction site and surprise, it's a baritone and in D! Or perhaps you've been playing violin for a while, but that new piece has you wondering about the harmonic minor scale. And if you picked up a mandolin this time instead of yet another guitar, you certainly want to see how your favorite pentatonic is played on that slim fretboard. Starting out can be rough, but learning continues as our interests evolve and that is fantastic. ScaleMaster is your go-to companion for learning scales on your instrument, and no matter how we look at it, scales will remain an essential part of our musical journey as beginners or professionals. Seeing any scale in music notation and on your instrument at the same time is pretty cool. No need to translate between the two. The notation shows you what to play, and your instrument shows you where your fingers go. Whether you're just starting out or need a quick reference, it's all right there. As you practice, you'll want to speed things up, slow them down. Maybe you've got your fingers organized after a couple weeks of working that harmonic minor mode, or you're working through a tricky passage. Adjust the tempo and keep pushing yourself. Save your scales too, that E Blues scale you've been working on, the exercises for your band's repertoire, or the scales you're exploring for that chord progression that keeps showing up. Each scale document remembers your instrument and where you left off. And that includes positions because for some of us an F Mixolydian scale looks very different in 5th position than it does in 3rd. But as for help with improvising, this is where ScaleMaster really shines. That Bbm7b5 chord keeps coming up, and you're tired of that same old scale. So, find the scales that work. Hear how they sound, and flip back and forth between different possibilities until something clicks. It's not about memorizing every scale, it's about discovering the ones that speak to you and expanding your vocabulary when you need it. If you're a pianist, you get a full 88-key interface. Guitar players get the 24 frets they want. String players can set custom tunings, that detuned E string on your violin, your new five-string banjo, or that Open D tuning for that one song. And when you're ready to work on reading music, switch clefs and practice with the same scales you know by ear. It all connects. • Over 200 scales from around the world • Scale visualization for your instrument in music notation and schematic • Reference instruments: piano, guitar, bass, banjo, mandolin, violin, viola, cello, double bass • Scale documents recording instrument, position and more for current and future reference • Universal transposition of any scale or exercise • All common clefs for reading practice • Dozens of tuning presets There are two main pillars to ScaleMaster Pro - reference and play. Finding good scale options for that old major chord is one thing, evaluating their sound another. For that you can generate scale patterns, change their tempo, key and sound to get a taste for what fluency would get you. Reference - as in reference instruments, alternate tunings, sound and notation alternatives and more. Playing along on the other hand is foremost excellent practice. You can slow things down or crank up the speed - ScaleMaster shows you where the notes are and play along if you want it to. Scales are a central topic for us musicians with many periods of interest. For a while we're into pentatonics but then get caught up in blues scales, church modes, exotic scales and more. ScaleMaster helps keep track and lets you sound things out.
Ember
This app offers a versatile guitar drive experience, combining overdrive, fuzz, and compression into a single unit. It provides three distinct sound profiles and extensive control over tone, bite, and bias for studio or stage use.
- Integrated overdrive, fuzz, and compression
- Three distinct sound voices: Warm, Drive, Ravage
- Adjustable drive, tone, bite, and bias controls
- AUv3 support for hosts like GarageBand and Logic Pro
- MIDI learn for hands-free control
- Standalone app for practice and recording
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Ember is a full drive chain in one pedal — not another single-circuit distortion. A gritty, tweed-flavored overdrive sits on the bottom, a filthy fuzz runs layered on top, and compression is built in. It's the stacked-amps sound that normally takes three pedals and an afternoon of gain-staging, dialed in with one knob. THREE VOICES WARM — distortion the way it was first discovered: a pushed vintage amp with sliced speaker cones. Raw, retro, and touch-sensitive. Roll BITE up and it tips into blown-speaker sizzle with a starved-supply quiver in the note. DRIVE — everything, more. A doubled, dual-amp crunch straight out of the 1980s. The sustain sings, sizzles, crackles, and rings — and stays articulate. Chords keep their edges; every note in a run stays clear. RAVAGE — unhinged. The amps are on fire and the ship is going down. Stomp BOOST and single notes bloom into screaming, feedback-laced sustain that hangs on for the better part of a minute. Pinch harmonics, smoldering solos, sixties-fuzz recklessness at modern gain. WHAT IT'S FOR • Recording guitar direct — a finished, layered drive tone with no amp, no mics, no reamping. • Replacing a drive + fuzz + compressor stack, and the hour spent making them agree. • Leads that hold: BOOST adds gain, presence, and a sustain compressor that carries the note for you. • Practice anywhere — standalone app, plug in and play. CONTROLS THAT MATTER • DRIVE — one knob from edge-of-breakup to inferno. The molten orb burns hotter as you push it — and as you play harder. • TONE — dark and thick to bright and cutting, with a speaker-style rolloff that keeps fizz out. • BITE — round and smooth to sharp and shredded. • BIAS — starve it for choked, dying-battery textures. • IN / OUT / MIX for gain staging and parallel blends, stereo or mono, click-free bypass. ON STAGE AND IN THE STUDIO • AUv3 for GarageBand, Logic Pro, AUM, and any Audio Unit host. • MIDI learn on everything — knobs, voices, BOOST, bypass, even program-change recall of specific presets. A MIDI footswitch runs the whole pedal hands-free. • Factory presets plus custom presets. One purchase. Mac, iPad, and iPhone.
Screenshots
Verdict
The clearest difference is review sentiment: Ember at 100% against ScaleMaster Pro's 42%. Ember also leads on price ($1.99 vs $4.99) and update cadence (monthly vs every 2 months). On ads, in-app purchases, monetization model 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
ScaleMaster Pro costs $4.99 and Ember $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ScaleMaster Pro ships an update every 2 months, Ember monthly. Both last shipped on October 24, 2026.
| Parameter | ScaleMaster Pro | Ember |
|---|---|---|
| Price | $4.99 | $1.99 — better |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 41.7% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 17 MB |
| Age rating | 12+ | 4+ |
| Developer | RoGame Software | Joshua Rideout |
Customer experience
ScaleMaster Pro
Ember
In-app purchases
ScaleMaster Pro
No in-app purchases
Ember
No in-app purchases









