Comparison

Heavenly Chord Performer vs SL Echo

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

Head to head
About

Heavenly Chord Performer

Features
Read full description

Heavenly Chord Performer turns your iPad or iPhone into an expressive smart-guitar performance surface. Select chord shapes with a color-coded matrix, then strum playable chord notes from responsive string pads. Hold strings, build extended voicings, switch keys, transpose the playable root range, and shape velocity directly with touch position. Built-in Warm Synth, Electric Piano, Organ, and Warm Pad sounds let you play immediately. Route notes through Virtual MIDI Out or host compatible AUv3 instruments when Premium is unlocked. Compatible with ROLI Lightpad Block M over BLE MIDI or USB MIDI. Its optional touch surface can play chord tones and display a static LED string layout. Premium MIDI IN Control maps an external MIDI controller directly to the chord matrix and string buttons. Connect a compatible LiteJam guitar over Bluetooth to display the selected key's scale notes and the active chord notes directly on its fretboard. Enable the scale and chord layers independently and choose separate colors for each layer. Key features: - Color-coded chord, slash-chord, and solo-note matrices - Extended multi-column string surface with velocity control - Hold Strings and Solo modes with configurable MIDI CC control - Built-in synth tones with sustain, Virtual MIDI Output, and AUv3 hosting - Compatible ROLI Lightpad Block M LED and touch support - Compatible LiteJam guitar fretboard scale and chord-note LED layers - Premium MIDI IN Control for external controllers - Configurable layout, tuning range, strings, frets, and performance presets Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://bwinnovationtw.github.io/apps/heavenly-chord-player/privacy.html

About

SL Echo

This audio effect app provides animated delay and space for musical decisions on iPad. Easily adjust time, feedback, and tone for various repeat styles, while maintaining a clear dry signal with stereo width and ducking. It supports AUv3 integration with popular music hosts.

Highlights
  • Animated delay and space effects
  • Adjustable time and feedback
  • Tone shaping controls
  • Stereo width and ducking
  • AUv3 support
  • Standalone preview mode
  • Factory and user presets
Features
Read full description

SL Echo is a focused AUv3 delay effect designed for fast musical decisions on iPad. Move from a close vocal pocket to wide, evolving repeats without navigating complex pages. • Time and feedback for slapback or long trails • Tone shaping for darker or brighter repeats • Stereo width and ducking for a clear dry signal • Factory presets and local user presets • AUv3 support for compatible iPad music hosts Works as a standalone preview app and as an AUv3 effect in GarageBand, AUM, Cubasis, BeatMaker 3 and other compatible hosts.

Screenshots

Heavenly Chord Performer2 screens
SL Echo3 screens

Verdict

The call

The clearest difference is price: Heavenly Chord Performer at Free against SL Echo's $6.99. SL Echo's advantage is in-app purchases (none vs 4). On update cadence, ads, device support and iOS requirement 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

Heavenly Chord Performer is free to download; SL Echo costs $6.99 up front. Heavenly Chord Performer sells 4 in-app purchases, starting at $0.99 per 7 days. SL Echo asks for nothing beyond the download.

UpkeepUpdate frequency

Heavenly Chord Performer ships an update every 10 days, SL Echo weekly. Both last shipped on October 31, 2026.

Scorecard2 real differences · 7 level
Heavenly Chord Performer versus SL Echo: the parameters behind the verdict, then further details
ParameterHeavenly Chord PerformerSL Echo
PriceFree — better$6.99
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 10 daysWeekly — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size4 MB18 MB
Age rating4+4+
DeveloperBetter World StudioVIACHESLAV ZHILTSOV

In-app purchases

4 purchases

Heavenly Chord Performer

Subscriptions3
  • Heavenly Premium Weekly3 Days trial$0.997 Days
  • Heavenly Premium Monthly7 Days trial$1.991 Month
  • Heavenly Premium Yearly14 Days trial$9.991 Year
One-time1
  • Heavenly Premium Forever$19.99
None

SL Echo

No in-app purchases

Questions

Is Heavenly Chord Performer free?
Heavenly Chord Performer is free to download, with in-app purchases available.
Is SL Echo free?
SL Echo costs $6.99, with no in-app purchases.
Do Heavenly Chord Performer or SL Echo have ads?
Neither Heavenly Chord Performer nor SL Echo shows ads.
Which is updated more often, Heavenly Chord Performer or SL Echo?
Heavenly Chord Performer ships an update every 10 days, and SL Echo weekly. Most recently, Heavenly Chord Performer was updated on October 31, 2026 and SL Echo on October 31, 2026.

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