JAF Collection vs BLEASS Dragonfly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JAF Collection
This audio effects collection offers digital models of classic analog synthesizer filters for iOS devices. It provides professional analog sound and optimized touchscreen interaction, functioning as standalone apps or Audio Units within other hosts.
- Digital models of classic analog synthesizer filters
- Optimized for touchscreen interaction
- Standalone host applications included
- Audio Units (AU) plugin support
- Unison oscillator section for testing and live performance
- MIDI connectivity and control
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The JAF Collection is an exciting set of digital modeled classic analog synthesizer filters (VCFs) for iOS. The emphasis of this collection of audio effects is professional analog sounding and optimized behavior with touchscreen usage. The collection is exclusively available on Apple devices. The apps and the included Audio Units are “universal”, so they work on iPhones and iPads the same way and also have basically the same appearance and functionality. Note: These apps are so-called “Audio Units” (aka plugins), which usually require hosting audio applications to operate. Although, they come with their own basic host applications, which include for instance Core MIDI connectivity and microphone input, to use the filters out of the box, like external hardware devices, without requiring another host application. The JAF Collection Filters can also act as a synthesizer module due to the fact, that there is an unison oscillator section (VCOs) built in for testing and for live performances. The analog modeled synthesizer has no advanced controls or modulators. It just runs the oscillators continuously and can be controlled by external MIDI messages to snap to MIDI pitches or being automated with the volume controller. The complete MIDI assignment is documented in the MIDI Implementation Chart for the JAF Collection, which is embedded into the main app.
BLEASS Dragonfly
This audio effect plugin offers a unique approach to tremolo, allowing music producers to add dynamic modulation to synths, vocals, and melodies. It syncs tremolo effects with input frequencies, MIDI notes, or sidechained signals for creative sonic textures.
- Pitch tracking for self or sidechain modes
- MIDI input for precise triggering
- Manual rate and amplitude control
- Adjustable smoothing, stereo, attack, and release
- Wild mode for saturation and waveshaping
- Animated visualization of effect rate
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BLEASS Dragonfly is a completely new approach to tremolo effect which brings new sonic possibilities to all music producers. Make your synths, voices or any melody “vibrate” in correspondence with its own frequencies, or with external basses and leads! Just like in Billie Eilish’s song “Xanny”, Dragonfly helps you achieve the same effect as when the voice gets modulated by a heavy bass. BLEASS Dragonfly automatically syncs the tremolo effect applied on a track using various triggers: First, you can use the pitch tracking module on either the input audio track (“self mode”) or a sidechained audio track (“sidechain mode”). You also can use the midi input to trigger Dragonfly with accuracy: the tremolo will automatically sync with the notes’ frequencies. Finally, a manual mode allows you to set a fixed frequency. Then you can finetune your settings by adjusting the fine, factor, smoothness, stereo, attack & release. The “Wild” mode applies a waveshaper to the signal to produce a subtle saturation. The final tremolo effect rate is mirrored by the flapping wings of the Dragonfly. BLEASS Dragonfly is also available for Mac & Windows (AU / VST3) https://www.bleass.com/dragonfly/ ________________________________________________ Technical description: SOURCE stage: - MANUAL: Tremolo rate is set by the Rate knob. Tremolo amplitude is set by the Amplitude knob. - MIDI: Tremolo rate corresponds to the rate of the lowest MIDI note received by the plugin. Tremolo amplitude corresponds to the velocity value of this note. - SELF: Pitch tracking on the input signal gives the tremolo rate. Tremolo amplitude matches the input signal’s amplitude. - SIDECHAIN: Pitch tracking on the sidechain signal gives the tremolo rate. Tremolo amplitude matches the sidechain signal’s amplitude. - SOURCE CHANNEL: Sets the channel to be analysed for SELF and SIDECHAIN modes. - AMPLITUDE: Sets tremolo amplitude in MANUAL mode. - GAIN: Sets the input gain in MIDI, SELF and SIDECHAIN modes. DRAGONFLY stage: - RATE: Sets tremolo rate in MANUAL mode. - FINE: Offsets the detected pitch value by +/- 0.5 semitone in MIDI, SELF and SIDECHAIN mode. - FACTOR: Detected or set rate is multiplied by this factor to give the final tremolo rate. - SMOOTH: Sets the smoothing duration of rate variations. - STEREO: Sets phase difference between left and right channels. - ATTACK: Attack duration of the effect. - RELEASE: Release duration of the effect. - MODE: SIMPLE is a basic tremolo. WILD uses complex waveshaping for warm and saturated effect. - WILDNESS: Sets waveshaping strength in WILD mode. - VISUALISATION: Dragonfly wings are animated to match the rate and amplitude of the effect. Green label on the left indicates the input MIDI note and rate. Blue label on the right indicates the applied MIDI note and Rate. MIX stage: - GAIN: Output gain of the effect. - DRY/WET: Dry/wet balance. NOTE: This is an AUv3 effect which needs a compatible host that ideally offers audio sidechain or MIDI FX routing (such as AUM, Cubasis 3 or Logic)
Screenshots
Verdict
The clearest difference is update cadence: JAF Collection at every 9 days against BLEASS Dragonfly's every 24 months. BLEASS Dragonfly's advantage is price ($7.99 vs $12.99) and review sentiment (100% vs 87%). On rating, 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
JAF Collection costs $12.99 and BLEASS Dragonfly $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for JAF Collection against 4.8 for BLEASS Dragonfly. Both are backed by a comparable volume of ratings — 20 and 17 respectively. Written reviews are what separate them: 87% of JAF Collection's written reviews are positive against 100% of BLEASS Dragonfly's.
JAF Collection ships an update every 9 days, BLEASS Dragonfly every 24 months. The most recent releases landed on October 12, 2026 and October 18, 2026 respectively.
| Parameter | JAF Collection | BLEASS Dragonfly |
|---|---|---|
| Price | $12.99 | $7.99 — better |
| Rating | 4.9 (20 ratings) — better | 4.8 (17 ratings) |
| Positive reviews | 86.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 20 — better | 17 |
| Update frequency | Every 9 days — better | Every 24 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 12 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Jens Guell | BLEASS |
Customer experience
JAF Collection
BLEASS Dragonfly
In-app purchases
JAF Collection
No in-app purchases
BLEASS Dragonfly
No in-app purchases
Questions
Is JAF Collection free?
Is BLEASS Dragonfly free?
Which has better reviews, JAF Collection or BLEASS Dragonfly?
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