Comparison

Drum Charter vs SUS4 Chord ID

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

Head to head
About

Drum Charter

Features
Read full description

Drum Charter is a professional drum notation app for creating, editing, and playing drum charts using an intuitive text-based format. Perfect for drummers, music teachers, and composers who need a fast, distraction-free way to write drum patterns. KEY FEATURES * Text-Based Notation Simple ASCII symbols represent drums: 'x' for hi-hat, 'o' for snare, 'Q' for kick. Triplet notation with the ³ symbol for advanced rhythms. Fast to type, easy to read. * Staff Notation Read the same chart as real drum notation on a five-line staff: noteheads per instrument, beams, rests, triplets, flams, ghost notes, repeat signs and rehearsal marks. Switch per song with [notation: staff] or live in Concert Mode. * Smart Symbol Palette Context-aware buttons show only relevant symbols by cursor position. * Real-Time Audio Playback High-quality drum sounds powered by FluidR3_GM soundfont. Hear patterns instantly with professional MIDI-based playback. * Flam & Ghost Notes Two expressive symbols for snare: Flam for quick grace notes before the main hit, Ghost for subtle quiet notes. Perfect for Jazz, Funk, and dynamic playing. * Lyrics Mode Create charts without drum notation - just lyrics, chords, and cues. Perfect for multi-instrumentalists with mixed setlists. Section headers in teal, cue lines in gray. Embedded drum bars automatically detected. Chord symbols highlighted in blue. * PDF Export Export as PDF — as the character grid, or as engraved staff notation on A4. Works on iPhone, iPad and Mac. * MusicXML Export Export to MuseScore, Sibelius, Finale and more — with triplets, repeats, flams, ghost notes and rehearsal marks. * MIDI File Export Export as Standard MIDI Files with two-voice layout. Configurable stem grouping. Import into any DAW. * Practice Mode A full-screen practice room for your e-drums. Loop any range of bars, with an optional count-in. Every hit you play appears on the notation, colour-coded by accuracy, with missed notes marked. A calm readout shows whether you rush or drag and how even you are - the two things that actually help. Output latency is compensated automatically. Repeat counts are honoured, so you practise the phrase as written. * Concert Mode with Playback Controls Full-screen performance view with large custom font (10-40pt). Beat grouping with adjustable opacity. Metronome click. Playlist with folder navigation. Play, skip, and navigate with on-screen controls and keyboard shortcuts. Native macOS fullscreen. Multi-column lyrics with [columns: N]. * Multi-Time Signature Support Full support for 4/4, 3/4 (Waltz), and 6/8 (Compound Time). UI picker for quick time signature changes. * Swing & Shuffle Support Authentic Jazz/Blues feel with standard swing notation. Write "Shuffle" for classic 67% swing, or specify 50-75%. UI button with 5 presets. * BPM Control via Metadata Set tempo in the chart with [140 BPM], 60-200 BPM. * Smart Bar Management Auto-numbering up to 999 bars. Repeat notation (4x) for efficient charting. Move bars up/down. Section headers for song structure. * Combination Symbols Three symbols for simultaneous Snare+Tom hits: p (Snare+Tom1), d (Snare+Tom2), g (Snare+FloorTom). Perfect for complex fills. * Multi-Column Export Export in 2, 4, 6, or 8 bars per line format. Optional "Replace rests with spaces" for LogicPro compatibility. * Universal App - iPhone, iPad, Mac Native experience on all devices with seamless iCloud sync. Start on iPhone, continue on iPad or Mac. WHO IS THIS FOR? - Drummers learning new songs - Music teachers creating lesson materials - Composers sketching drum parts - Multi-instrumentalists with mixed setlists - Anyone who prefers text over complex notation software PLATFORM SUPPORT - iPhone (iOS 15.0 or later) - iPad (iPadOS 15.0 or later) - Mac (macOS 12.0 or later, Apple Silicon and Intel) - Optimized for all screen sizes Perfect for drummers who want professional results without complexity.

About

SUS4 Chord ID

Identify any chord you hear or play. This app listens to music or uses its built-in keyboard to name chords, displaying common guitar and piano voicings. It supports everything from simple triads to complex jazz chords and logs your identified chords with notes.

Highlights
  • Microphone-based chord detection
  • Built-in keyboard for manual input
  • Chord name display with voicings
  • Supports complex jazz chords
  • Identification history with notes
  • On-device audio analysis
Features
Read full description

Play a chord into the mic and see its name, with the top three matches and how sure it is. Or tap the notes on the built-in keyboard. Fully on-device: no cloud, no account. Chord ID knows ten chord types: major, minor, dominant 7th, major 7th, minor 7th, diminished, augmented, sus2, sus4 and power chords. Save the chords you want to keep, add a note, and you have a record of the progression you were working on. • Mic detection with the top three candidates and a confidence for each • A keyboard for tapping notes in • Ten chord types, from triads to 7ths and sus chords • Guitar fingerings for common open chords • A saved history with notes For guitarists working out a song, pianists checking a voicing, and theory students. Everyone gets a few identifications a day. Pro, or SUS4 All-Access across the whole range, removes the daily limit. Made in the UK by working musicians. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Drum Charter4 screens
SUS4 Chord ID4 screens

Verdict

The call

The clearest difference is in-app purchases: Drum Charter at none against SUS4 Chord ID's 3. On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SUS4 Chord ID sells 3 in-app purchases, starting at $2.99 per month. Drum Charter asks for nothing beyond the download.

UpkeepUpdate frequency

Drum Charter ships an update every 9 days, SUS4 Chord ID fortnightly. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

Scorecard1 real difference · 8 level
Drum Charter versus SUS4 Chord ID: the parameters behind the verdict, then further details
ParameterDrum CharterSUS4 Chord ID
PriceFreeFree
Rating—1.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 9 days — betterFortnightly
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod, MaciPhone, iPad, Mac, Apple Watch
Requires iOS15.0 — better16.0
Further details — not scored
Size147 MB28 MB
Age rating4+4+
DeveloperRalf BrauchlerThePaulSmith

In-app purchases

None

Drum Charter

No in-app purchases

3 purchases

SUS4 Chord ID

Subscriptions2
  • SUS4 Chord ID Pro Monthly7 Days trial$2.991 Month
  • SUS4 All-Access7 Days trial$4.991 Month
One-time1
  • SUS4 Chord ID Lifetime$59.99

Questions

Is Drum Charter free?
Drum Charter is free to download, with no in-app purchases.
Is SUS4 Chord ID free?
SUS4 Chord ID is free to download, with in-app purchases available.
Do Drum Charter or SUS4 Chord ID have ads?
Neither Drum Charter nor SUS4 Chord ID shows ads.
Which is updated more often, Drum Charter or SUS4 Chord ID?
Drum Charter ships an update every 9 days, and SUS4 Chord ID fortnightly. Most recently, Drum Charter was updated on October 11, 2026 and SUS4 Chord ID on October 25, 2026.

Other comparisons