GridInstrument vs Salome
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GridInstrument
This app transforms your iOS device into a unique musical instrument with a grid-based interface. Explore over 20 musical modes and various grid layouts. It also supports external MIDI controllers like the Launchpad for expanded creative possibilities.
- Grid-based note arrangement
- Launchpad integration
- Over 20 musical modes
- Multiple grid layouts
- Core MIDI out
- Audiobus 3 MIDI support
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GridInstrument lets you play your iOS device like a musical instrument. Instead of a piano keyboard, notes are arranged on a grid. It also lets you hook up your Launchpad device (using the Apple Camera Connection Kit) and play that as well! Features: - Launchpad integration (connect your Launchpad Mini in low-power mode without a hub or any other Launchpad with a powered hub) - Change octaves - Change keys - Change from over 20 musical modes ("Major, Minor, Dorian, Mixolydian, etc.") - Choose between three grid layouts ("Diatonic", "Chromatic/4ths String Layout", "Drum rack"), as well as row note offset/overlap setting - Core MIDI out so that you use GridInstrument to control your other instruments - Audiobus 3 MIDI support - MIDI note input so that you can see notes triggered by other devices on your grid Want to see some other feature implemented? Contact us at the Decidedly website.
Salome
This app lets you record or import sounds, transform them into seamless loops, and play them polyphonically using MPE or MIDI controllers. It offers a fast workflow with onscreen keypads and MPE/MIDI input/output for creative sound manipulation.
- Record or import sounds
- Create seamless loops
- Polyphonic MPE/MIDI playback
- Onscreen MPE keypads
- Latch mode for fader control
- AUv3 plugin for iOS and macOS
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Salome is a tool for recording (or importing) sounds, turning them into seamless loops, and then polyphonically play them using MPE or MIDI. CONTROL: The onscreen keypads can be latched, turning them into 2-dimensional faders for controlling various modulations. Additionally, software and hardware MPE controllers can be used (or normal MIDI, in a pinch). WORKFLOW: The entire process from sampling to playing was designed to be a fast and fluid as possible. Speed > features. UNIVERSAL: AUv3 plugins for iOS (iPhone, iPad) and MacOS (ARM, Intel) are included*. - Full Audio Unit compatibility (note that not all hosts support all AU features) - Built-in MPE keypads for multidimensional onscreen control - MPE/MIDI input and output from the Audio Unit, so you can record your performance or even control other MPE synths - 12 mode filter, based on the Oberheim Xpander design - Latch-mode lets you play the instrument using faders - Basic standalone mode included (for connectivity use the AU plugin) - Record or import sounds (WAV, AIF, MP3) and instantly play them as a polyphonic instrument - Effortless seamless loops using the non-destructive X-Fade feature Find the user manual on ruismaker.com * not all MacOS DAWs fully support Audio Unit plugins. This is not a VST plugin.
Screenshots
Verdict
The clearest difference is price: GridInstrument at $3.99 against Salome's $7.99. GridInstrument also leads on iOS requirement (8.0 vs 13). Salome's advantage is rating (4.7 vs 4.5) and chart position (#195 vs unranked). On review sentiment, 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
GridInstrument costs $3.99 and Salome $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Salome holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 11 and 30 respectively. Written reviews split almost evenly too, at 83% and 83% positive.
GridInstrument ships an update weekly, Salome every 9 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.
| Parameter | GridInstrument | Salome |
|---|---|---|
| Price | $3.99 — better | $7.99 |
| Rating | 4.5 (11 ratings) | 4.7 (30 ratings) — better |
| Positive reviews | 83.3% of reviews | 83.3% of reviews |
| Number of ratings | 11 | 30 — better |
| Update frequency | Weekly — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #195 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 8.0 — better | 13 |
| Further details — not scored | ||
| Size | 15 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Decidedly, LLC | Bram Bos |
Customer experience
GridInstrument
Salome
In-app purchases
GridInstrument
No in-app purchases
Salome
No in-app purchases









