Comparison

FAC Envolver vs Ringotron

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

Head to head
About

FAC Envolver

This audio effect processor transforms input audio using MIDI CC and notes to control synthesizer parameters. It features a noise gate and a trance gate for unique sound modulation and sequences.

Highlights
  • MIDI CC and note control
  • Envelope follower
  • Noise gate
  • Trance gate
  • Stereo effect with linked channels
  • Adjustable pitch and scale progression
Read full description

Being a MIDI effect in its essence, controlling your synthesizers parameters (e.g volume, cutoff, res) with MIDI CC and notes, FAC Envolver is also able to transform the input audio via two exclusive effects: a Noise Gate and a Trance Gate. This combination is the key to breathe life into your sound, providing interesting natural modulation and sequences that will always be different by nature. Under the hood, FAC Envolver is an envelope follower delivering MIDI data generated from the contour of a signal. The source of this signal may come from two distinctive circuits: the first one is a classic envelope follower and the second one is a rythmical pattern called trigger gate. Both circuits are responsible for providing a signal envelope that can be altered by a set of parameters and delivered as MIDI control change messages (CC). The generated signal envelope also passes through a gate detection mechanism driven by a threshold. When the signal goes above the threshold, the gate is open and when the signal goes below, the gate is closed. This open/close sequence provides a second envelope which is delivered as MIDI CC (on/off) and notes. The pitch of the note may be set within the effect or from an external value provided by MIDI input. Both may follow a particular scale progression. The envelope follower circuit also provides a noise gate to control precisely the level of your audio signal. This uses the same open/close sequence built by the gate detection mechanism that delivers MIDI data but acts on the audio. Following the same logic, when the second circuit - the trigger gate - is engaged, the open/close sequence provides a trance gate style effect to the audio. FAC Envolver is a stereo effect and provides two slots, one slot per channel. Both can be linked to facilitate the manipulation. The audio can also be turned to mono and the dry and wet audio can be mixed.

About

Ringotron

This app offers advanced control over ring modulation effects for sound design and audio processing. Its multi-band design allows precise manipulation of the audio spectrum, with a special soft mode to reduce unwanted intermodulation. It can also function as a resonant filter that smoothly transitions into a ring modulator.

Highlights
  • Parallel ring modulator units
  • Stereo separation control
  • Ultra-narrow band resonance
  • Ribbon controls for frequencies
  • Modulation system for band centers
  • Tempo syncing for oscillators
  • Soft limiter and clipper
Features
Read full description

Ringotron allows taming the strong transformational effects of traditional ring modulation, opening up a wider range of possibilities in sound design and audio FX. Its multi-band design enables fine control over which parts of the spectrum will be transformed by the effect. A special soft mode is available that borrows concepts from feedback modeling, which can be used to reduce intermodulation effects that are often a limiting factor in the more general applicability of ring modulators. In addition to the layers of control they provide, combination of these core features also allows the plugin to act as a stereo, multi-peak resonant filter that can also smoothly morph into a ring modulator. FEATURES: • 2 parallel ring modulator units (max. modulator frequency: 8 kHz) • Stereo separation can be added to band center, mod. frequency, mod. phase • Ultra-narrow bands can be used to create highly resonant sounds • 4 large ribbon controls for band center and modulator frequencies • Band center frequencies can be modulated by the built-in modulation system • Tempo syncing can be independently configured for each oscillator • Built-in soft limiter and clipper to protect against volume spikes IMPORTANT INFORMATION: The plugin comes with a zero-latency, non-brickwall soft limiter, and as such, its stopping power is limited. Make sure to always leave enough headroom or use an external brickwall limiter for total protection against powerful transients. Alternatively, a built-in soft clipper is also available. PLEASE NOTE: • AUv3-compatible host app is required • Suported sampling rates: 44.1, 48, 96 kHz

Screenshots

FAC Envolver4 screens
Ringotron2 screens

Verdict

The call

The clearest difference is update cadence: FAC Envolver at every 3 months against Ringotron's every 20 months. FAC Envolver also leads on price ($9.99 vs $12.99) and iOS requirement (10.0 vs 14.0). On rating, review sentiment, ratings volume 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

FAC Envolver costs $9.99 and Ringotron $12.99 up front. 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 — 4.9 for FAC Envolver against 5.0 for Ringotron. Both are backed by a comparable volume of ratings — 41 and 15 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

FAC Envolver ships an update every 3 months, Ringotron every 20 months. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

Scorecard3 real differences · 7 level
FAC Envolver versus Ringotron: the parameters behind the verdict, then further details
ParameterFAC EnvolverRingotron
Price$9.99 — better$12.99
Rating4.9 (41 ratings)5.0 (15 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings41 — better15
Update frequencyEvery 3 months — betterEvery 20 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better14.0
Further details — not scored
Size25 MB4 MB
Age rating4+4+
DeveloperFrederic Corvestquantovox

Customer experience

FAC Envolver

All ratings41 ratings
Positive97.6%
Neutral0.0%
Negative2.4%
Written reviews14 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Ringotron

All ratings15 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

FAC Envolver

No in-app purchases

None

Ringotron

No in-app purchases

Questions

Is FAC Envolver free?
FAC Envolver costs $9.99, with no in-app purchases.
Is Ringotron free?
Ringotron costs $12.99, with no in-app purchases.
Which has better reviews, FAC Envolver or Ringotron?
Ringotron is rated higher. FAC Envolver averages 4.9 out of 5 from 41 ratings, while Ringotron averages 5.0 from 15 ratings.
Do FAC Envolver or Ringotron have ads?
Neither FAC Envolver nor Ringotron shows ads.
Which is updated more often, FAC Envolver or Ringotron?
FAC Envolver ships an update every 3 months, and Ringotron every 20 months. Most recently, FAC Envolver was updated on October 15, 2026 and Ringotron on October 13, 2026.

Other comparisons