Comparison

NebulizerAU vs PO

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

Head to head
About

NebulizerAU

This audio effect plugin emulates the sound of an old-school, warbly tape delay. It functions as an AUv3 effect, allowing it to be used on multiple tracks within various audio applications. It delivers a distinct lo-fi sound.

Highlights
  • AUv3 effect plugin
  • Tape delay emulation
  • Lo-fi sound character
  • Stackable on multiple tracks
  • Compatible with GarageBand, AUM
Features
Read full description

Old school warbly malfunctioning tape delay Nebulizer comes echoing back from the IAA doldrums. But fear not. Even though it's now an AUv3 effect plugin, ready to stack up on multiple tracks in GarageBand, AUM or your favourite audio application, it's still the wayward lo-fi monstrosity you used to know. And if you didn't know it, isn't it about time you did? Nebulizer is totally free. No ads, no in-app purchases, no subscriptions, no surveillance, no nag screens. If you want premium features, this is not the app for you.

About

PO

Design and edit drum sounds, kits, and patterns for Teenage Engineering's PO-32 Tonic. Transfer your creations to the device via audio. Back up and edit existing sounds, and import/export patches from Microtonic.

Highlights
  • Shape 16 sounds with 21 synth parameters
  • Program 16-step patterns with accents
  • Send kits, sounds, or patterns via audio
  • Back up and decode PO-32 data dumps
  • Import/export Microtonic patches
  • Local library with tags and favorites
Features
Read full description

PO-PatchStudio designs drum sounds, kits and patterns for Teenage Engineering's PO-32 Tonic, then sends them to your Pocket Operator over sound. Free, with no ads and no account. The PO-32 has no USB data connection. It loads new sounds the way an old modem does, by listening through its microphone. So this app does the fiddly part on a proper screen: build a kit, hold your phone next to the PO-32 and press play. WHAT YOU CAN DO - Shape all 16 sounds with the full set of 21 synth parameters, plus both ends of the morph - Program 16-step patterns on the pads, with accents, and hear them before you send - Send a whole kit, a single sound or a pattern to the PO-32 over audio - Back up your PO-32: record its data dump through the microphone and the app decodes it into a kit you can edit - Import Microtonic .mtdrum and .mtpreset patches, including files from older versions of Microtonic, and export your sounds back out - Keep kits, sounds and patterns in a local library with tags and favourites WORKS WITH - PO-32 Tonic - Also sends drum sounds to the PO-35 Speak's built-in Tonic channel HOW TRANSFER WORKS Put the PO-32 in receive mode (press acc + sound), turn your phone's volume up and play the transfer into the PO-32's mic. To back up, start recording in the app, then hold write and press sound on the PO-32. Previews come from an open-source recreation of the PO-32's synth, so they sound close to the hardware but not identical. Once a sound is on the PO-32, it plays through the device's own engine. A NOTE FROM ME I'm a solo developer and a PO-32 owner. PO-PatchStudio stands on the open-source libpo32 library by Eric Lewis and years of reverse-engineering by the Pocket Operator community, which is why it's free. If something is missing or broken, tell me. Not affiliated with or endorsed by Teenage Engineering AB or NuEdge Development AB. Pocket Operator, PO-32 and Tonic are trademarks of Teenage Engineering AB. Microtonic is a trademark of NuEdge Development AB.

Screenshots

NebulizerAU2 screens
PO4 screens

Verdict

The call

The clearest difference is ratings volume: NebulizerAU at 3 against PO's 1. On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for NebulizerAU against 5.0 for PO. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

UpkeepUpdate frequency

NebulizerAU ships an update daily, PO every 2 days. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 8 level
NebulizerAU versus PO: the parameters behind the verdict, then further details
ParameterNebulizerAUPO
PriceFreeFree
Rating5.0 (3 ratings)5.0 (1 ratings)
Number of ratings3 — better1
Update frequencyDaily — betterEvery 2 days
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size2 MB12 MB
Age rating4+4+
DeveloperMatthew CaldwellPhoton Consulting Limited

Customer experience

NebulizerAU

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

PO

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

In-app purchases

None

NebulizerAU

No in-app purchases

None

PO

No in-app purchases

Questions

Is NebulizerAU free?
NebulizerAU is free to download, with no in-app purchases.
Is PO free?
PO is free to download, with no in-app purchases.
Which has better reviews, NebulizerAU or PO?
NebulizerAU and PO are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.
Do NebulizerAU or PO have ads?
Neither NebulizerAU nor PO shows ads.
Which is updated more often, NebulizerAU or PO?
NebulizerAU ships an update daily, and PO every 2 days. Most recently, NebulizerAU was updated on October 1, 2026 and PO on October 11, 2026.

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