L12X Solid State Amplifier vs Air Synth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
L12X Solid State Amplifier
This app offers an analog simulation of a classic solid-state guitar amplifier, enhanced with extra channels and a contour knob for versatile tone shaping. It includes an integrated cabinet simulator with a high-quality impulse response for authentic sound.
- Analog simulation of Marshall Lead 12
- Clean and Metal channels
- Contour knob for tone shaping
- Boost overdrive stage
- Integrated Cab Simulator
- Marshall cabinet IR with Celestion V30
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L12X is an analog simulation inspired by the Marshall® Lead 12™ solid state amplifier of the late ‘80s. The original circuit has been modified by adding two additional channels (Clean and Metal), a Contour knob (to get a more scooped tone) and an additional Boost overdrive stage. An integrated Cab Simulator is loaded with a Marshall® cabinet IR featuring Celestion® V30 cones.
Air Synth
Transform your phone into a motion-controlled musical instrument. Explore a simplified mode for younger users or dive into advanced synthesis features. Experience expressive soundscapes controlled by your movements.
- Motion-controlled pitch and effects
- Camera, gyroscope, and accelerometer tracking
- Adjustable sensitivity settings
- Diverse expressive presets
- Advanced synthesis parameters (oscillators, LFO, filters)
- Simplified mode for kids
- Save custom presets
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Air Synth transforms your phone into a motion-controlled instrument. It offers a fun, simplified mode for kids and an advanced mode for synthesizer enthusiasts. Note: This app requires good lighting for optimal motion tracking. FEATURES * Motion tracking based on camera, gyroscope and accelerometer * Movement-controlled pitch, effects controlled by tilt * Sensitivity settings for both movement and tilt * A diverse range of expressive presets * 4 oscillators * LFO, filter, envelopes, tremolo, reverb and delay * Free pitch and a wide range of scales * Save your presets * Simplified mode for kids
Screenshots
Verdict
The clearest difference is price: L12X Solid State Amplifier at Free against Air Synth's $1.99. L12X Solid State Amplifier also leads on update cadence (weekly vs every 2 months) and ratings volume (9 vs 1). Air Synth's advantage is rating (5.0 vs 4.4). On 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
L12X Solid State Amplifier is free to download; Air Synth costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Air Synth holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: L12X Solid State Amplifier has 9 ratings behind it against 1, so its average is the more settled of the two.
L12X Solid State Amplifier ships an update weekly, Air Synth every 2 months. Both last shipped on October 24, 2026.
| Parameter | L12X Solid State Amplifier | Air Synth |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.4 (9 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 9 — better | 1 |
| Update frequency | Weekly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 30 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Audiority Srl | Air Dev |
Customer experience
L12X Solid State Amplifier
Air Synth
In-app purchases
L12X Solid State Amplifier
No in-app purchases
Air Synth
No in-app purchases
Questions
Is L12X Solid State Amplifier free?
Is Air Synth free?
Which has better reviews, L12X Solid State Amplifier or Air Synth?
Do L12X Solid State Amplifier or Air Synth have ads?
Which is updated more often, L12X Solid State Amplifier or Air Synth?
Other comparisons
