Osculatrix vs Fret Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Osculatrix
This audio effect plugin offers modulated filters, delays, and saturation for creative sound design. It can transform audio from subtle coloration to complete destruction. Use it within your favorite music production apps.
- Modulated filters
- Delay effects
- Saturation
- AUv3 plugin
- Subtle coloration to destruction
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Osculatrix is a tremolo with ideas above its station. With modulated filters, delays, a bit of saturation. Like its predecessors, it is cryptic and opinionated, and it goes from subtle colouration to total destruction at the twist of a knob. Osculatrix is an AUv3 effect plugin. It does nothing on its own. Use it in GarageBand, AUM or your favourite audio application. Osculatrix does not want your money and it doesn't want your data. It is 100% free. No ads, no in-app purchases, no subscriptions, no surveillance, no nag screens.
Fret Master
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Stop counting up and down your fretboard, trying to learn the notes on your guitar. Stop using patterns and shapes to identify your notes. I did for years and went through app after app in the hope something would help me. I couldn't find one that me "learn the fretboard cold" - as Steve Vai advises! - so I built my own and used it. Now I finally know all my notes. Become a Fret Master and FINALLY learn the notes of your fretboard - you won't regret it! Get down the location of the note in your mind and then get it on your fretboard. Fret Master challenges you, with your guitar to memorise the notes and if you really can't find the note - the app offers a gentle reminder. You'll find as you use the app that your memory of the location of the notes will really improve and your knowledge of the fretboard. The app also tests your chord knowledge, knowledge of the Major and Minor Diatonic and Pentatonic scales, and Root notes for soloing - use the app however you wish to achieve your guitar journey goals! Each test offers handy visual reminders should your memory need a prompt. Make Fret Master part of your practice sessions! What you will revise and learn: - All the notes on the fretboard with your guitar in hand - Your memory of the notes - Major and Minor Diatonic (for the purpose of note learning) - Minor and Major Pentatonic (for the purpose of note learning) - Essential chords - Essential Seventh Chords - E Shape Barre Chords - A Shape Barre Chords. Features - Various timer settings, including a no timer option - Handy visual reminders of chords, note positions and scale patterns.
Screenshots
Verdict
The clearest difference is price: Osculatrix at Free against Fret Master's $0.99. Osculatrix also leads on update cadence (monthly vs every 21 months) and iOS requirement (15.0 vs 18.5). On ads, 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
Osculatrix is free to download; Fret Master costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Osculatrix ships an update monthly, Fret Master every 21 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.
| Parameter | Osculatrix | Fret Master |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Monthly — better | Every 21 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 2 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Caldwell | Hardi Darweish |
In-app purchases
Osculatrix
No in-app purchases
Fret Master
No in-app purchases









