1Chart vs Sibelius KeyPad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
1Chart
Create, share, and print professional music charts using the Nashville Number System or letter chords. Offers flexibility in key changes, chord notation, and rhythmic details for efficient music arrangement.
- Nashville Number System support
- Letter chord flexibility
- Key change updates
- Rhythmic notation and dynamics
- Arrangement tools
- PDF and editable file sharing
- Performance mode
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FOR PROFESSIONAL-LOOKING MUSIC CHARTS, 1CHART IS ALL YOU NEED Create, share and print easy-to-read music charts with the only app that gives you all the power of the Nashville Number System, while also offering the flexibility of switching to letter-format chords whenever you like. At the core, 1Chart is built around the Number System and all its shorthand flexibility for charting music. But why stop there? 1Chart is also built for those who prefer to read letter chords rather than number chords. “Am F C” or “6m 4 1”? The choice is yours. Now anyone who prefers letter chords can enjoy the Number System's concise charting advantages — without needing to read numbers. Have a chart using letter chords and want to change keys? No problem. Select a new key, and your letter-format chart is updated to reflect the change. CHART FASTER AND SMARTER - Clear typography makes your charts easier to read - Copy/paste measures or sections for faster charting - View charts in your choice of three font sizes - Share charts and notebooks as PDFs or editable 1Chart files QUICKLY TYPE CHORDS - Support for chord inversions, as well as common and not-so-common chord qualities ("alt" chord, anyone?) - For Numbers fans: Accidentals before or after chord numbers? 1Chart accommodates both preferences. SUPPORT FOR RHYTHMIC NOTATION & DYNAMICS - Add as much rhythm/dynamic detail as you need. 1Chart includes characters for pushes, diamonds, the "mute triangle," etc., as well as the traditional notes and rests used in the Number System. - Use traditional notation or "hash marks" to specify beat distribution in split measures - Mark an area with a crescendo, decrescendo, ritardando or accelerando ADVANCED RHYTHMIC NOTATION - Beam notes above a single chord (e.g. to show an 8th-note feel) or across multiple chords (to show groove or beat distribution) - Tie notes and diamonds TOOLS TO BUILD YOUR ARRANGEMENT - Use repeat symbols, codas, segnos, etc. - Select an area to specify 1st/2nd/etc. endings - Separate sections with a single- or double-underline, or specify no formatting FINE-TUNE YOUR FORMAT - Option to align measures horizontally (4–8 measures per line) - Style inversions with a horizontal or diagonal dividing line - Choose "Minimize Horizontal Spacing" to fit more content per line ORGANIZE AND SHARE YOUR CHARTS - Use Notebooks to gather your charts in easy-to-manage collections (to mirror a set list, for ex.) - Share charts and notebooks by email - Import from and export to cloud services such as iCloud Drive, Dropbox, etc. Imported files must be in 1Chart (.1ch) format. PERFORMANCE MODE - “Lock” your charts to prevent unintended edits - Swipe left/right to access next/previous chart ONLINE SUPPORT & USER FORUM Visit 1chartapp.com for help and to join the user community. ABOUT THE NASHVILLE NUMBER SYSTEM Nashville Numbers is an ingenious shorthand system for charting music that identifies chords by number (relating to scale degree) rather than letter, so charts are key-independent. A Number chart is valid no matter what key you choose to play it in. Take a progression spelled with the chord letters, A, D, and E. In Numbers, these chords are written as “1, 4, 5,” matching their position in the A scale: A is first, D is fourth, and E is fifth. Because scale relationships don't change when you change keys, “1, 4, 5” works in any key. Change the key to G, and “1, 4, 5” indicates you’ll want to play G, C and D — the first, fourth, and fifth notes of the G major scale. Combine this flexibility with rhythmic and dynamic notation, and you’ve got a powerful format for creating concise roadmaps of songs for use when rehearsing or performing. 1Chart includes the option of showing chords in number or letter format, giving you the best of both worlds. You can easily toggle between number chords and letter chords at any time in any chart you create.
Sibelius KeyPad
Transform your iPhone or iPad into a virtual keypad for your computer to enhance creativity and productivity within Sibelius. Connect wirelessly via Wi-Fi for seamless control, with a slick interface and quick setup.
- Virtual keypad for Sibelius
- Wi-Fi connectivity
- Automatic keypad switching
- Slick user interface
- Personal Hotspot support
- Easy 3-step setup
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Sibelius KeyPad turns your iPhone or iPad into a dedicated notation keypad for Sibelius. Keep the controls you use most close at hand while you compose, arrange, and edit. Connect over Wi-Fi, choose the keypad you need, and send notation shortcuts to Sibelius on your Mac or Windows PC. Made for scoring - Common Notes - More Notes - Beams and Tremolos - Articulations - Jazz Articulations - Accidentals Customize your workflow - Assign keyboard shortcut actions to keypad buttons - Choose the shortcut sent when switching each keypad tab - Reset keypads to factory settings any time - Automatically switch keypads in Sibelius based on your selection Simple setup - Works with Sibelius for Mac and Windows - Connect over Wi-Fi or Personal Hotspot - Set up in three quick steps - No direct line of sight required System Requirements - iPhone or iPad - Sibelius for Mac or Windows - Mac: macOS 10.13 or later with helper app - Windows: Windows 7 or later with helper app - Shared Wi-Fi network or Personal Hotspot Helper app Requires the free helper app for Mac or Windows: https://rs.ltd/get Ratings are like gold for indie developers like me - please give the app a quick rating on the App Store. • Privacy policy can be found at https://www.cherpake.com/privacy • Terms and Conditions can be found at https://www.cherpake.com/terms
Screenshots
Verdict
The clearest difference is price: Sibelius KeyPad at Free against 1Chart's $15.99. Sibelius KeyPad also leads on rating (4.6 vs 4.3) and update cadence (every 3 weeks vs every 3 months). 1Chart's advantage is in-app purchases (none vs 4) and ads (none vs shown). On review sentiment 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
Sibelius KeyPad is free to download; 1Chart costs $15.99 up front. Sibelius KeyPad sells 4 in-app purchases, starting at $0.99 per month. 1Chart asks for nothing beyond the download.
Sibelius KeyPad holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 33 and 142 respectively. Written reviews complicate that: 89% of 1Chart's written reviews are positive against 88% of Sibelius KeyPad's, so the app with the better star average is not the one people write more warmly about.
1Chart ships an update every 3 months, Sibelius KeyPad every 3 weeks. The most recent releases landed on August 11, 2026 and September 7, 2026 respectively.
| Parameter | 1Chart | Sibelius KeyPad |
|---|---|---|
| Price | $15.99 | Free — better |
| Rating | 4.3 (33 ratings) | 4.6 (142 ratings) — better |
| Positive reviews | 89.4% of reviews — better | 88.1% of reviews |
| Number of ratings | 33 | 142 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 44 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | RooKanga Digital LLC | Remote Sunrise LTD |
Customer experience
1Chart
Sibelius KeyPad
Bugs and requests
1Chart
Not enough reviews yet to summarise bugs or requests.
Sibelius KeyPad
Reported bugs
10 issues- Accent symbol key does not function
- Grace note key non-functional
- Main screen shows 'no computer found' despite prior connection
- App crashes on iPhone with certain iOS versions
- Buttons trigger Mission Control or desktop reveal instead of intended functions
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- Incorrect note duration symbols displayed on some keys
- App occasionally inputs notes automatically after 30 minutes of use
- Tab switching not working properly
- Inconsistent button functionality on certain pages
- Connection issues on public WiFi networks
Requested features
9 requests- Voice selector buttons for editing different voices
- Piano keyboard option for note input
- Numeric display on keys for dual numpad functionality
- Sync between Sibelius keypad clicks and app display
- iPad Sibelius compatibility
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- Custom key mapping/settings
- Upstroke/downstroke articulation symbols
- Customizable skins and themes
- Better button positioning for smaller hands
In-app purchases
1Chart
No in-app purchases
Sibelius KeyPad
- Sibelius KeyPad Pro - 1 month$0.991 Month
- Sibelius KeyPad Pro - 1 year$4.991 Year
- Sibelius KeyPad Pro - lifetime$2.99
- Sibelius KeyPad Pro - forever$9.99









