C vs Sessioneer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
C
Learn the treble side of a C-System Chromatic Button Accordion with an interactive note guide. Features high-quality sampled notes and a responsive button board for playing melodies and chords. Connect to external speakers for amplified sound.
- Built-in note guide
- High-quality sampled notes
- Responsive button board
- Play melodies and chords
- Toggle note names
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Using the built-in note guide, you will quickly learn the notes on the treble side of the C-System Chromatic Button Accordion and be playing songs in no time! The instrument has extremely high-quality individually sampled notes from a real instrument and a very fast, responsive button board for playing melodies and chords. For even more fun, plug your iPhone into an external amplified speaker. Touch the "?" button to toggle the note names.
Sessioneer
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Sessioneer is a tune book for Irish traditional musicians, on iPad and iPhone. The full thesession.org database is built in and works offline: - Tens of thousands of tunes: jigs, reels, hornpipes, polkas, slides, and more - Search by title, alias, composer, and submitter/transcriber - Multiple settings per tune - Build your own sets or browse thousands from the thesession.org community - Create Books of tunes, sets, PDFs and Images - Import Tunebooks and Bookmarks from thesession.org - Write notes with Apple Pencil directly on the music - Mark favorites, track your history - Import your own sheet music as PDFs or Images: read, search, and annotate with Apple Pencil - Add PDFs and Images to Books alongside tunes and sets - Tablature for fiddle, mandolin, and guitar with tuning and capo options - Favorite and share PDFs and Images Syncs through iCloud across your devices. No account, no email, no analytics, no data sold. Subscriptions are optional. The whole app is free. Subscribers remove a small support banner; nothing is gated. Tune database by thesession.org, used under Creative Commons. Built by an indie developer. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Sessioneer at Free against C's $1.99. Sessioneer also leads on update cadence (every 3 weeks vs every 7 months). C's advantage is in-app purchases (none vs 4) and chart position (#184 vs unranked). On ads 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
Sessioneer is free to download; C costs $1.99 up front. Sessioneer sells 4 in-app purchases, starting at $0.99 per month. C asks for nothing beyond the download.
C ships an update every 7 months, Sessioneer every 3 weeks. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.
| Parameter | C | Sessioneer |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 2.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 7 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Best chart rank | #184 — better | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 10.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 29 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Eskin | RUSSELL JAMES SCHICK |
In-app purchases
C
No in-app purchases
Sessioneer
- Supporter (Monthly)$0.991 Month
- Patron (Monthly)$3.991 Month
- Supporter (Annual)$6.991 Year
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- Patron (Annual)$39.991 Year









