Comparison

HarmonicAlly vs SlideFree Companion

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

Head to head
About

HarmonicAlly

This app provides a comprehensive suite of tools for harmonica players, including chord and scale lookups, instrument key identification, and harmonica collection tracking. It also offers practical advice on playing and instrument care.

Highlights
  • Chord and scale lookup
  • Instrument key identification
  • Harmonica collection tracker
  • Customizable tuning options
  • Playing and care tips
  • Offline functionality
Features
Read full description

Play More. Guess Less. HarmonicAlly™ puts a complete set of harmonica tools in your pocket. It’s built for harmonica players, but it speaks guitar, ukulele, bass, piano, mandolin, banjo, and more. Look up a chord, find the right harp for a song, identify the key of a progression, and keep track of every harmonica you own - all without leaving the app. WHAT’S INSIDE QuickGuide™ Look up any chord or scale, then see how it lays out on a different instrument. Useful for harmonica players, and just as useful for guitarists, ukulele players, and pianists who want a fast cross-instrument reference. HarmoniFinder™ Tell it your song’s key and feel, and it tells you which Lee Oskar harmonica to grab. Honest rankings, no padded results. Key Detective Tap the chords you’re hearing and the app figures out the key. Hand the result to HarmoniFinder™ and you’re playing. My Collection Track the harmonicas you own. Useful at gigs, useful at home, useful when you’re trying to remember whether you actually own a Low F before you click “buy.” Tuning Workshop Explore the four Lee Oskar tunings, mix and match reed plates between them, and try custom tunings adapted from a wide library, including blues, country, folk, Celtic, jazz, and world music presets. Learn & Care Practical tips for playing positions, troubleshooting common issues, and keeping your harmonicas in good shape. Toolkit, not teacher. WHY HARMONICALLY? • Harmonica-first, but multi-instrument by design • No accounts, no logins, no data collection • Works offline • Free, with no in-app purchases From Lee Oskar Harmonicas, making harmonicas for musicians since 1983.

About

SlideFree Companion

This app visualizes chord and scale layouts for a specific chromatic harmonica model. It helps musicians quickly identify notes, practice scales, and understand chord voicings on their instrument. Designed for live performance and practice, it offers instant feedback and transposition.

Highlights
  • Chord and scale mapping for NONSLIDER harmonicas
  • Instant transposition by harp key
  • Built-in sequencer for audio playback
  • Adjustable playback speed and volume
  • Multi-language musical notation support
  • Optimized for landscape iPhone and iPad
Read full description

No valves. Stainless steel reeds. The NONSLIDER brings blues harp expressiveness — bends, overblows, dynamic playing — to a fully chromatic instrument, in one of the most robust and maintenance-free harmonica designs ever built. SlideFree Companion is built for exactly this instrument. Instantly see how your chords and scales map across the NONSLIDER's double-row layout. Every blow, every draw, upper row, lower row. Right on your screen. The same way the NONSLIDER puts the full chromatic range at your fingertips, SlideFree Companion puts the full harmonic landscape in front of your eyes. Want to know what a G minor 7 chord looks like on your NONSLIDER? Two dropdown menus and you're there. Playing a jam and don't know the key of the song? Light up a scale and see every note mapped across your iPad or iPhone in an instant. On stage and need a quick reference? SlideFree Companion was designed for dark venues and real gig pressure — large, readable, fast. Trying to figure out if a C major or C7 fits better over that chord change? Switch between them in one tap while the song plays — and listen. Want to hear how a scale actually sounds before you play it? The app plays it through your speaker — ascending, descending, continuously — while your backing track runs in the background. A great musician never stops exploring. Neither should their tools. What's inside: 15 chords and 16 scales Chord and scale reference for Solo-Tuning NONSLIDER harmonicas in C, D, G, A, Bb, Low C, Low D, Low E and Low F All 15 major keys represented Three octave ranges MY HARP transposition — set your harp's key, every map updates instantly Built-in sequencer to hear any chord or scale played back Adjustable playback speed (BPM) and volume Version 1.2 adds multi-language musical notation. Switch between International (A B C), French (La Si Do), and German (A H C) note names with a single tap. A dot indicator below each flag shows which notation system is active. Optimized for iPhone and iPad in landscape No subscription. No ads. No frills. One purchase, yours forever. SlideFree Companion has exactly what you need and nothing you don't. That's not a limitation — that's the design and your device won’t go to sleep in the middle of the show either. Why? Because the show must go on. Not affiliated with or endorsed by C.A. Seydel Söhne.

Screenshots

HarmonicAlly4 screens
SlideFree Companion4 screens

Verdict

The call

The clearest difference is price: HarmonicAlly at Free against SlideFree Companion's $9.99. HarmonicAlly also leads on in-app purchases (none vs 2). SlideFree Companion's advantage is update cadence (every 6 days vs fortnightly). On rating, review sentiment, ratings volume and ads 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

HarmonicAlly is free to download; SlideFree Companion costs $9.99 up front. SlideFree Companion sells 2 one-off in-app purchases. HarmonicAlly asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for HarmonicAlly against 5.0 for SlideFree Companion. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

HarmonicAlly ships an update fortnightly, SlideFree Companion every 6 days. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
HarmonicAlly versus SlideFree Companion: the parameters behind the verdict, then further details
ParameterHarmonicAllySlideFree Companion
PriceFree — better$9.99
Rating5.0 (2 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings22
Update frequencyFortnightlyEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.0
Further details — not scored
Size38 MB13 MB
Age rating4+4+
DeveloperLee Oskar EnterprisesCedric Liautaud

Customer experience

HarmonicAlly

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

SlideFree Companion

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

HarmonicAlly

No in-app purchases

2 purchases

SlideFree Companion

One-time2
  • 30-Day TrialFree
  • Lifetime Access$9.99

Questions

Is HarmonicAlly free?
HarmonicAlly is free to download, with no in-app purchases.
Is SlideFree Companion free?
SlideFree Companion costs $9.99, and also offers in-app purchases.
Which has better reviews, HarmonicAlly or SlideFree Companion?
HarmonicAlly and SlideFree Companion are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do HarmonicAlly or SlideFree Companion have ads?
Neither HarmonicAlly nor SlideFree Companion shows ads.
Which is updated more often, HarmonicAlly or SlideFree Companion?
HarmonicAlly ships an update fortnightly, and SlideFree Companion every 6 days. Most recently, HarmonicAlly was updated on October 24, 2026 and SlideFree Companion on October 24, 2026.

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