Comparison

URL Beamer vs Air Synth

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

Head to head
About

URL Beamer

This utility plugin allows you to launch other applications from within your audio host using tappable buttons. It's ideal for quick app switching during live performances or studio workflows, with optional MIDI note output for controlling other plugins or host functions.

Highlights
  • AUv3 plugin formats (Effect/Instrument)
  • Customizable buttons for app launching
  • Optional MIDI note output
  • MIDI note input for button triggering
  • File Manager for settings
  • AUv3 Plugin State Saving
Read full description

URL Beamer is an AUv3 plugin for iOS that launches other apps from within your audio host. It provides tappable buttons that trigger custom URL schemes – ideal for quick app switching during live performance or studio workflow. You can insert it as either an Audio Effect or an Instrument in hosts like AUM, then launch external apps with a single tap. 
Optionally, each button can also send a MIDI note (on a chosen channel), letting you control other plugins or trigger global functions inside the host. Features • AUv3 plugin formats: Music Effect (aumf), Instrument (aumu) • 4 or 8 customizable buttons per instance • Buttons launch apps via custom URLs or universal links • Optional MIDI Note output (Note + Channel) • Basic MIDI Note input for button triggering • Minimal layout – fits tightly into your setup • File Manager for saving and loading settings • AUv3 Plugin State Saving + AU Presets • Parameter Mapping for remote MIDI control • Designed for AUM – works in other AUv3 hosts too Use it to switch apps, load presets, or control devices – all from a tiny plugin window. Note: URL Beamer does not play sound or process audio. It is a utility plugin intended for workflow enhancements in iOS audio environments. → For a complete description, see the documentation: https://novotny.klingt.org/Apps/URLBeamer/UserGuide

About

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.

Highlights
  • 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
Read full description

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

URL Beamer4 screens
Air Synth4 screens

Verdict

The call

The clearest difference is price: URL Beamer at Free against Air Synth's $1.99. URL Beamer also leads on ratings volume (7 vs 1) and device support (3 vs 1). Air Synth's advantage is rating (5.0 vs 4.4). On update cadence, 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

URL Beamer is free to download; Air Synth costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Air Synth holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: URL Beamer has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

URL Beamer ships an update every 3 months, Air Synth every 2 months. The most recent releases landed on September 7, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 3 level
URL Beamer versus Air Synth: the parameters behind the verdict, then further details
ParameterURL BeamerAir Synth
PriceFree — better$1.99
Rating4.4 (7 ratings)5.0 (1 ratings) — better
Number of ratings7 — better1
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15 — better17.6
Further details — not scored
Size13 MB43 MB
Age rating4+4+
DeveloperJosef NovotnyAir Dev

Customer experience

URL Beamer

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%

Air Synth

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

URL Beamer

No in-app purchases

None

Air Synth

No in-app purchases

Questions

Is URL Beamer free?
URL Beamer is free to download, with no in-app purchases.
Is Air Synth free?
Air Synth costs $1.99, with no in-app purchases.
Which has better reviews, URL Beamer or Air Synth?
Air Synth is rated higher. URL Beamer averages 4.4 out of 5 from 7 ratings, while Air Synth averages 5.0 from 1 ratings.
Do URL Beamer or Air Synth have ads?
Neither URL Beamer nor Air Synth shows ads.
Which is updated more often, URL Beamer or Air Synth?
URL Beamer ships an update every 3 months, and Air Synth every 2 months. Most recently, URL Beamer was updated on September 7, 2026 and Air Synth on September 23, 2026.

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