# Atom | Piano Roll 2 vs BLEASS Slow Machine

The clearest difference is price: BLEASS Slow Machine at $6.99 against Atom | Piano Roll 2's $19.99. BLEASS Slow Machine also leads on review sentiment (82% vs 68%) and chart position (#194 vs unranked). Atom | Piano Roll 2's advantage is update cadence (weekly vs every 28 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Atom | Piano Roll 2 costs $19.99 and BLEASS Slow Machine $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BLEASS Slow Machine holds the better App Store score, 4.6 against 4.5. Both are backed by a comparable volume of ratings — 96 and 38 respectively. Written reviews point the same way: 68% of Atom | Piano Roll 2's written reviews are positive against 82% of BLEASS Slow Machine's.

Atom | Piano Roll 2 ships an update weekly, BLEASS Slow Machine every 28 months. Both last shipped on October 29, 2026.

## The numbers

| Metric | Atom | Piano Roll 2 | BLEASS Slow Machine |
| --- | --- | --- |
| Price | $19.99 | **$6.99** |
| Rating | [4.5 (96 ratings)](https://appshunter.io/ios/app/atom-piano-roll-2/id1536259776/reviews) | **[4.6 (38 ratings)](https://appshunter.io/ios/app/bleass-slow-machine/id1544923864/reviews)** |
| Number of ratings | **96** | 38 |
| Positive reviews | 67.5% of reviews | **81.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 28 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#194** |
| Size | 16 MB | 27 MB |
| Requires iOS | 12.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Victor Porof](https://appshunter.io/developer/1446209018) | [BLEASS](https://appshunter.io/developer/1220444177) |

## What reviewers say

### Atom | Piano Roll 2

[App page](https://appshunter.io/ios/app/atom-piano-roll-2/id1536259776)

This advanced AUv3 MIDI editor and sequencer allows for complex musical composition and live performance. It functions as a plugin within compatible music hosts, enabling users to create intricate patterns, launch clips, and customize workflows with scripting.

**Highlights:** AUv3 MIDI note editor, Modular sequencer, Clip launcher, Step input and real-time recording, Customizable layouts and themes, Scripting for custom workflows, Ghost lanes for harmonies and counterpoint

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🎹 Excellent piano roll editor with intuitive interface
- 🎯 Powerful MIDI sequencing and clip launching capabilities
- 🔗 Great integration with AUM and hardware controllers like Launchpad
- ✨ Feature-rich with multiple layers, patterns, and flexible grid
- ⚡ Smooth and responsive performance

**What reviewers complain about**

- 🐛 Frequent crashes and stability issues in AUM
- 🖱️ No mouse/trackpad support for drawing notes
- 📝 Missing MIDI CC editing functionality
- 🎚️ Poor velocity editing workflow
- 👁️ UI elements too small and cramped

**Reported bugs**

- Crashes when saving sessions in AUM
- Notes get corrupted during playback
- White background display issue
- Position indicator jumps when loop doesn't start at bar 1
- Buttons for adding bars disappear after certain point

**Requested features**

- MIDI CC editing and visualization
- Mouse and trackpad input support
- Logic Pro for iPad support
- Chord entry in step input mode
- Velocity editing improvements and visual feedback


### BLEASS Slow Machine

[App page](https://appshunter.io/ios/app/bleass-slow-machine/id1544923864)

**Currently charting:** #194 Top Paid · Music (US App Store)

This music effect app offers creative ways to manipulate audio, allowing you to slow down tracks, create tape stop effects, and program speed variations. It provides precise control over rhythm, pitch, and timing for unique sound design.

**Highlights:** Creative slow down effect, Tape stop effect with performance controls, Speed sequencer for programmed variations, Adjustable loop size and speed, Filter for frequency band control, Multiple time stop modes

**In-app purchases:** none


## Frequently asked questions

### Is Atom | Piano Roll 2 free?

Atom | Piano Roll 2 costs $19.99, with no in-app purchases.

### Is BLEASS Slow Machine free?

BLEASS Slow Machine costs $6.99, with no in-app purchases.

### Which has better reviews, Atom | Piano Roll 2 or BLEASS Slow Machine?

BLEASS Slow Machine is rated higher. Atom | Piano Roll 2 averages 4.5 out of 5 from 96 ratings, while BLEASS Slow Machine averages 4.6 from 38 ratings.

### Do Atom | Piano Roll 2 or BLEASS Slow Machine have ads?

Neither Atom | Piano Roll 2 nor BLEASS Slow Machine shows ads.

### Which is updated more often, Atom | Piano Roll 2 or BLEASS Slow Machine?

Atom | Piano Roll 2 ships an update weekly, and BLEASS Slow Machine every 28 months. Most recently, Atom | Piano Roll 2 was updated on October 29, 2026 and BLEASS Slow Machine on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*