Helio Sequencer vs LevLr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Helio Sequencer
A free and open-source music sequencer designed for hobbyist composers, game developers, and indie artists. Comprehensive documentation is available to help users get started with its features.
- Open-source music sequencer
- Aimed at hobbyist composers
- Supports game developers
- For indie artists
- Includes documentation
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Helio is a free and open-source music sequencer aimed at hobbyist composers, game developers, and indie artists. Follow the documentation to get started: https://docs.helio.fm
LevLr
This audio effect plugin offers simple compression and limiting for music production. It features two modes and two intuitive controls, making it easy to achieve desired dynamics without complex settings. Presets are included for quick adjustments.
- Compressor and Limiter modes
- Two intuitive controls (In/Out)
- Simple presets
- AUv3 compatible
- Standalone operation
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LevLr Compressor / limiter Plugin (AUv3) LevLr is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic or GarageBand. Overview The LevLr "leveller" is a super simple dynamics processor with just two modes and two controls. If you find tinkering with compression ratios, makeup gain and attack / decay times, confusing or time-consuming, you might like to give LevLr a try, especially as it's free! Parameters Active - Toggles the effect On or Off. Mode - Changes between Comp (compressor) and Limit (limiter) mode. Typically you would use Comp on an individual track, and Limit on a master output. In - Determines how hard you drive the compression "circuit". As you increase the gain, the compression effect will become more obvious, with an overall increase in perceived volume and "weight". Out - Allows you to reduce the output in cases where you have the desired amount of compression, but the track is now too dominant in your mix. You generally don't need to adjust this unless your In setting is more than about 6dB. With so few controls, it's pretty easy to dial-in LevLr to taste, but it also has three very simple presets to get you going: Default - a general-purpose Comp setting that can help a track sit in the mix a bit better. Track Compressor - this is heavier / more obvious compression, with a little gain compensation. Master Limiter - this can work well on a master bus and makes everything seem LOUDER! That's pretty much all there is to it, but for the technically minded... The In value is basically the compression threshold, so for example 6dB means compression will kick-in somewhere around the -6dB level. The compression ratios used are 4:1 and 12:1 for Comp and Limit mode respectively. Automatic gain compensation is applied internally depending on the threshold and ratio. The attack time is extremely fast (close to 0ms) meaning that LevLr should handle just about anything you can throw at it without exceeding 0dB at its output. Please do take a look at my other AudioUnits on the App Store if you can spare the time. Supporting paid apps allows me to release free ones as a little thankyou from time to time. For more info and support please visit: www.waverley-instruments.com/robjackson
Screenshots
Verdict
The clearest difference is rating: LevLr at 5.0 against Helio Sequencer's 4.4. LevLr also leads on update cadence (daily vs every 3 months). On price, ratings volume, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
LevLr holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 13 and 5 respectively.
Helio Sequencer ships an update every 3 months, LevLr daily. The most recent releases landed on September 6, 2026 and September 8, 2026 respectively.
| Parameter | Helio Sequencer | LevLr |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (13 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 13 — better | 5 |
| Update frequency | Every 3 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 7 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Rudenko | Rob Jackson |
Customer experience
Helio Sequencer
LevLr
In-app purchases
Helio Sequencer
No in-app purchases
LevLr
No in-app purchases









