1Chart vs Pure Synth® Platinum
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.
Pure Synth® Platinum
This app is a versatile virtual instrument player for iOS, serving as a comprehensive solution for rompler, synthesizer, and wavetable needs. It offers advanced modulation, built-in effects, and expandable sound libraries. Users can store samples on external drives and customize their sound with unique features.
- Rompler, synthesizer, and wavetable engines
- Advanced automation and modulation system
- Includes VKFX Suite and additional free effects
- Expandable sound libraries via virtual IAP
- External drive support for sample storage
- MIDI Learn and modulate any parameter
- AUv3 Full View Support
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Pure Synth® Platinum is NOW FREE!!! It has evolved into one of the only Virtual Instrument Players on iOS and has emerged as the only substitute for your Rompler/Synth needs. All engines are fully capable as a romper, synthesizer, and wavetable mangler. We have a simple automation and modulation system where you simply touch+hold on any parameter and it will learn your MIDI CC commands and you can assign modulations to any parameter, including the effects. Our synth also includes all of the VKFX Suite from Overloud™ and we are always adding new effects that we add free from within the app such as the new effects below: - CloudVerb Creatmospheric Reverb - PhatFilt - Analog modeling Filter and Feedback - Talkbox® - Vowel Sounding Talkbox effect - iFX Amp - Realistic Amp Sim emulations Virtual IAP Expansion Setup Everyone remembers the famous samplers that we love with branded expansions and the unlimited ability to expand. Now that Pure Synth® Platinum is a free download, you can pick and choose which expansions you want to use. Freely purchase any expansion and most of them don’t require other expansions in order to run. We have plans for many more expansions and with our ability to store samples on external drives, your iOS device becomes the one stop shop for all things samples and synthesis. Not only can we add new sounds, but new features, such as the ability to load in your own wavetables or load in your own sounds in the future. Existing BASSalicious and FM TiNES Users Existing users of our FMT and BASS2 can go to the settings and look for the APPLY CROSSGRADE option. This will allow you to unlock those same sounds from within Pure Synth®, so now all you need is one synth to access all of the sounds. Important Features: ▪ External Drive for Sample Storage ▪ BlueTooth MiDI Capable ▪ iCloud Backup and Sharing of Presets ▪ Ability to export presets ▪ Enhanced AUv3 Preset Resizing ▪ Expansion Pack Banners and Branding ▪ Metal support, Faster UI, Faster loading, and major CPU Updates ▪ Two Mode MIDI Program Change ▪ MIDI Learn and Modulate Any parameter iOS Features: ▪ iOS 13+ ▪ AUv3 Full View Support ▪ Supports Scrolling to see all parameters ▪ Background Audio ▪ Virtual MIDI ▪ Separate MIDI Channel Selections ▪ Full 2732 x 2048 HD View ▪ Virtual Keyboard Sends MIDI ▪ MIDI Learn any parameter ▪ File Sharing of Presets Features ▪ Flexible Preset System with Fast search, loading, and saving ▪ Favorites option for sounds and presets ▪ Lightening fast sample streaming engine ▪ Warm analog rich simple-set ran through analog gear ▪ Warm Wavetable Technology ▪ Easy modulation system - Tap+Hold to assign modulation to virtually any source ▪ A VA circuit modeled State Variable Filter ▪ Ability to select edit multiple oscillators ▪ JP-8000 Supersaw Unison/Detune ▪ Powered Scale Option - Scales the detuning in a unique way. ▪ Brand New FX System ▪ Dynamically and Graphically position FX signal flow in virtual racks. ▪ Separate Oscillator FX sends for Reverb and Insert FX. ▪ Featuring Overloud's VKFX Suite. ▪ New Dattorro's figure-of-eight Algorithmic Reverb. ▪ New Schroeder Algorithmic Reverb. ▪ New Soft Master Limiter with Tube Saturation. ▪ New Stereo Spread/Widener with Safe Bass Multi-Mode Settings. Device Specifications: ---------------- ▪ 2GHz ARM Processor Recommended - iPad Pro 12.9 and 9.7 in, iPad 5th Gen, iPad Pro 12.9 in. (Gen 2), iPad Pro 10.5 in., iPad 6th Gen, iPad Pro 11 in., iPad Pro 12.9 in. (Gen 3), iPad Air (Gen 3) ▪ iPhone X and higher - iPhones with at least 2GB RAM Supported Only ▪ For External Sample Streaming, we only recommend Fast External SSD Drives ---------------- IMPORTANT NOTE: Purchasing the iOS Version does not grant you FREE access to our desktop version. Each platform/version must be purchased separately.
Screenshots
Verdict
The clearest difference is price: Pure Synth® Platinum at Free against 1Chart's $15.99. Pure Synth® Platinum also leads on device support (3 vs 1) and iOS requirement (11.0 vs 14.0). 1Chart's advantage is rating (4.3 vs 3.6) and review sentiment (89% vs 51%). On ratings volume, update cadence 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
Pure Synth® Platinum is free to download; 1Chart costs $15.99 up front. Pure Synth® Platinum sells 13 one-off in-app purchases. 1Chart asks for nothing beyond the download.
1Chart holds the better App Store score, 4.3 against 3.6. Both are backed by a comparable volume of ratings — 33 and 54 respectively. Written reviews point the same way: 89% of 1Chart's written reviews are positive against 51% of Pure Synth® Platinum's.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on August 11, 2026 and September 26, 2026 respectively.
| Parameter | 1Chart | Pure Synth® Platinum |
|---|---|---|
| Price | $15.99 | Free — better |
| Rating | 4.3 (33 ratings) — better | 3.6 (54 ratings) |
| Positive reviews | 89.4% of reviews — better | 50.7% of reviews |
| Number of ratings | 33 | 54 — better |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 44 MB | 317 MB |
| Age rating | 4+ | 4+ |
| Developer | RooKanga Digital LLC | MIDIculous LLC |
Customer experience
1Chart
Pure Synth® Platinum
Bugs and requests
1Chart
Not enough reviews yet to summarise bugs or requests.
Pure Synth® Platinum
Reported bugs
5 issues- Purchased content disappearing after updates
- Synth not responding or producing sound in DAWs
- Glitches and audio dropouts during playback
- Incompatibility issues with certain iOS versions
- Inconsistent behavior across different devices
Requested features
5 requests- MIDI learn capabilities for all parameters
- Improved preset management and organization
- Ability to import custom wavetables and samples
- Dedicated sound design tools and modulation options
- Better integration with external storage devices
In-app purchases
1Chart
No in-app purchases
Pure Synth® Platinum
- Pure Synth 8 Bit Expansion$2.99
- Rached 808s for Pure Synth$3.99
- EDM Leads Vol 1 for Pure Synth$3.99
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- Pure Glide Urban Synth$5.99
- BASSalicious 1 Factory Content$6.99
- Creatmosphere Expansion$6.99
- Suitcase EP Piano Expansion$7.99
- YAMAHA EX5 Expansion$7.99
- Pure Sine 2$8.99
- BASSalicious 2 Factory Content$9.99
- Upright Piano Expansion$9.99
- FM TiNES Expansion for PSP$14.99
- Factory Sample Content$19.99
Questions
Is 1Chart free?
Is Pure Synth® Platinum free?
Which has better reviews, 1Chart or Pure Synth® Platinum?
Do 1Chart or Pure Synth® Platinum have ads?
Which is updated more often, 1Chart or Pure Synth® Platinum?
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