L2 Aura vs Metropoly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
L2 Aura
This audio effect plugin provides smooth compression for vocals, guitars, and keyboards. It offers precise control for leveling sound and dual-mono functionality for bus processing, ensuring a tight mix.
- Smooth compression for various instruments
- Precise sound leveling
- Dual-mono mode for bus control
- Tube-driven output
- Compress and limit modes
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L2 Aura is simple to use, delivering the gentle, smooth compression to vocals, guitars, keyboards, basically everywhere. Level your screams with precision and keep them where you want them. Dual-mono feature gives you more control over your bus. Ideal for making sure the track stays tight in the mix. Key Features: - Tube-driven output - 2 modes (compress/limit) - Dual-mono mode Available in AUv3 and standalone
Metropoly
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Metropoly is a polyrhythmic metronome that turns polyrhythms into something you can see and feel. It helps you develop an intuition for complex rhythms by visualizing them in a way that makes their structure obvious at a glance. BUY IT ONCE AND OWN IT - No subscription. - No ads. - No sign-in. - Every feature works offline. - One purchase for iPhone, iPad and Mac. BUILD A POLYRHYTHM - Up to six rhythms, each with its own beat count, all lining back up every cycle. - Every rhythm gets its own configurable color and sound, so the parts stay separable by eye and ear. - If preferred, add a count-in of one full cycle of the first rhythm, so you know where the loop starts before it starts. EXPORT THE LOOP AS VIDEO - Render the current polyrhythm to a square video at 1080p or 4K. - Choose a gray, black, white, or transparent background that drops straight into your edit. - Loop it 1 to 64 times, with or without audio. Loops are frame and sample accurate, so they cut together seamlessly. - Rendering carries on while you use another app, and tells you when it is finished. PRESETS - Save any configuration as a named preset and load it back instantly. - The app reopens on the polyrhythm you were last working on. THEMES - Three light themes and three dark themes, following the system appearance or pinned to one. - Separately configure the background color of the polygon view. ABOUT THE DEVELOPER Made by Thijmen Dam, an indie developer and musician building small, focused tools with care. Metropoly started as a way to practice polyrhythms, and grew into something I actually enjoy opening every day. Thanks for giving it a spin (literally!). It means a lot to me. If you have any feedback, do not hesitate to reach out.
Screenshots
Verdict
The clearest difference is price: L2 Aura at $5.99 against Metropoly's $9.99. On update cadence, ads, in-app purchases and device support 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
L2 Aura costs $5.99 and Metropoly $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
L2 Aura ships an update every 4 days, Metropoly every 5 days. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.
| Parameter | L2 Aura | Metropoly |
|---|---|---|
| Price | $5.99 — better | $9.99 |
| Rating | 4.6 (8 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 4 days — better | Every 5 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 37 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Aurora DSP | Thijmen Dam |
In-app purchases
L2 Aura
No in-app purchases
Metropoly
No in-app purchases









