Comparison

Tandem MIDI Canvas vs Ample Juice

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

Head to head
About

Tandem MIDI Canvas

Design and build custom MIDI controllers on your iPhone or iPad. Save presets, perform with motion and snapshots, and collaborate in real-time with others. Features smart snapping, layout templates, and morphing between states.

Highlights
  • Build custom MIDI controller layouts
  • Save and recall presets
  • Perform with motion and snapshots
  • Real-time collaboration
  • Smart MIDI setup
  • Morphing between states
Features
Read full description

Tandem turns your iPhone or iPad into a customizable MIDI controller you can actually trust on stage. Build your own layouts in minutes, map them fast, save reusable presets, and perform with powerful features like snapshots, morphing, motion control, and real-time collaboration. Whether you’re producing in the studio, playing live, teaching, or building DJ performance layouts, Tandem gives you a fast, flexible way to create controllers that fit your workflow instead of forcing you into someone else’s. BUILD THE CONTROLLER YOU ACTUALLY WANT Create custom layouts with knobs, faders, XY pads, drum pads, buttons, toggles, momentary buttons, endless encoders, transport controls, and gyroscope-based motion. Start from a blank canvas or jump in quickly with templates for mixers, synth performance rigs, drum layouts, dashboards, and more. Save your setups as presets and reuse them whenever you want. FAST WORKFLOW, BUILT FOR REAL USE Tandem is designed to help you build quickly and perform confidently. Features include: • Smart snapping and responsive grids • Spacing tools for clean layouts • Focus Mode for precision editing • Fast MIDI Learn • Helpful hints and a replayable tutorial walkthrough • Smart MIDI setup so new controls can automatically map to unused assignments SHAPESHIFT YOUR PERFORMANCE This is where Tandem becomes more than a controller. Save up to 8 snapshots of an entire layout, including all control values. Instantly jump between states or smoothly interpolate between them using a Morph Driver. It’s perfect for live performance, evolving sound design, transitions, and expressive macro control. RANDOMIZATION YOU CAN PLAY Map Randomize to a button or pad and generate musical variation on demand. Great for experimentation, happy accidents, sound design, and live moments that feel alive instead of static. COLLABORATE IN REAL TIME With Tandem Mode, multiple devices can share and control the same layout together. Host or join a session and collaborate live across devices—ideal for bands, classrooms, writing rooms, rehearsals, and shared performance setups. Locally and Remotely via SharePlay! DJ AND PERFORMANCE READY Tandem isn’t just for synths and studio control. It can also power performance-oriented layouts for transport, mixing, browser access, FX control, looping, hot cues, waveforms, and more. Build focused pages for the way you actually perform. THEMES THAT LOOK GOOD AND HOLD UP ON STAGE Use high-contrast, stage-ready themes or create your own look. Tandem includes a redesigned Theme Maker plus import/export support for themes and preset packages so you can share setups and visual styles. FLEXIBLE CONNECTIVITY Connect with: • USB-C • Bluetooth MIDI • Wi-Fi Background processing helps keep MIDI flowing while you work. Tandem isn’t just a MIDI controller app. It’s a controller builder with performance features you usually only get from dedicated hardware—wrapped in a workflow that’s fast, modern, and easy to come back to. Design your ideal controller, save your favorite setups, morph entire layouts, and perform anywhere—solo or together.

About

Ample Juice

This app simulates a guitar amplifier, cabinet, and microphone setup, allowing musicians to shape their tone with intuitive controls. It offers a range of sounds from clean to heavy distortion and includes a built-in tuner and preset saving.

Highlights
  • Simulated amp, cabinet, and microphone
  • Adjustable gain, EQ, and mic positioning
  • Pulp and boost effects
  • Built-in chromatic, guitar, and bass tuner
  • 25 factory presets
  • AUv3 effect and standalone app
  • MIDI and automation support
Read full description

Plug in. Tune up. Play a chord. If it needs more bite, turn it up. If the low strings need to hit harder, add Pulp. If the top end is getting in the way, move the microphone. Ample Juice works like the rig you already understand, because playing guitar should not feel like programming one. ONE SCREEN, LIKE AN AMP The whole signal path is in front of you: gate, boost, drive, amp, 4x12 and microphone. No pages to remember and no puzzle of hidden settings. Start with the controls you know, turn them until the guitar sits right, and leave the rest alone. FROM CLEAN ENOUGH TO LEAD READY Juice covers the ground between edge-of-breakup rhythm and a full lead voice. The first part of the dial adds body and sheen. The middle is where crunch lives. The last stretch opens quickly for sustain and saturation. Even when the gain is up, chords keep their notes instead of folding into one fizzy block. Pulp sits before the amp, where your boost pedal would. It trims low end before the clipping starts and leans into the midrange, so palm mutes land firmly and down-tuned riffs do not spread across the floor. Throw the Clean lever and the drive section steps aside; throw it back and every dirty setting is waiting where you left it. POSITION THE MIC BY TOUCH OR MOUSE No need to translate what you hear into studio jargon. Put a finger on the mic and move it, or grab it with a mouse. Position it toward the cone centre for cut, toward the edge for warmth, farther back for space, or off-axis to soften a sharp pick attack. The cabinet picture is the control—move what you see and listen as the tone follows. READY WHEN THE RIFF ARRIVES Use it as an AUv3 effect in your host or open the standalone app and choose your interface input. It adds no latency, so the note stays under your fingers. The tuner is already at the front of the rig, presets can save without stopping playback, and every control can follow MIDI or automation. 25 factory presets give you useful starting points for clean, crunch, metal, lead and more. Save the sounds that belong to your songs and take them across your devices. SPECIFICATIONS - Audio Unit v3 effect and standalone app - iPad, Mac, iPhone and Apple Vision Pro - Mono or stereo, zero added latency, no tail - 44.1 / 48 / 96 kHz as a plug-in and in the Mac app; 44.1 / 48 kHz in the iPhone and iPad app - All 22 controls automate and assign to MIDI - 25 factory presets across eight categories - Built-in chromatic, guitar and bass tuner - True bypass, click-free and safe to automate - Built-in user manual

Screenshots

Tandem MIDI Canvas4 screens
Ample Juice4 screens

Verdict

The call

The clearest difference is review sentiment: Tandem MIDI Canvas at 100% against Ample Juice's 50%. Tandem MIDI Canvas also leads on rating (5.0 vs 4.0). Ample Juice's advantage is device support (4 vs 2). On price, ratings volume, ads and in-app purchases 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

Tandem MIDI Canvas costs $14.99 and Ample Juice $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Tandem MIDI Canvas holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 100% of Tandem MIDI Canvas's written reviews are positive against 50% of Ample Juice's.

Scorecard3 real differences · 7 level
Tandem MIDI Canvas versus Ample Juice: the parameters behind the verdict, then further details
ParameterTandem MIDI CanvasAmple Juice
Price$14.99$14.99
Rating5.0 (3 ratings) — better4.0 (2 ratings)
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings3 — better2
Update frequencyEvery 5 weeks—
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, Mac, Vision Pro — better
Requires iOS17.017.0
Further details — not scored
Size24 MB16 MB
Age rating4+4+
DeveloperMitchell CohenChristian Thompson

Customer experience

Tandem MIDI Canvas

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Ample Juice

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

None

Tandem MIDI Canvas

No in-app purchases

None

Ample Juice

No in-app purchases

Questions

Is Tandem MIDI Canvas free?
Tandem MIDI Canvas costs $14.99, with no in-app purchases.
Is Ample Juice free?
Ample Juice costs $14.99, with no in-app purchases.
Which has better reviews, Tandem MIDI Canvas or Ample Juice?
Tandem MIDI Canvas is rated higher. Tandem MIDI Canvas averages 5.0 out of 5 from 3 ratings, while Ample Juice averages 4.0 from 2 ratings.
Do Tandem MIDI Canvas or Ample Juice have ads?
Neither Tandem MIDI Canvas nor Ample Juice shows ads.

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