FAC Phazer vs BLEASS Phaser
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FAC Phazer
This music effect plugin offers a rich sonic palette inspired by classic guitar pedals and hardware synthesizers. It provides extensive control over phasing effects with adjustable LFOs, unique characters, and versatile modulation options for all instruments and genres.
- Inspired by classic phaser units
- Adjustable LFO with tempo sync
- Four unique sonic characters
- External modulation and Step mode
- Stereo phase modulation
- Universal AUv3 purchase
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• Inspired by famous phaser units from guitarist and keyboardist world • Unique sonic character combined with a large amount of control • Adjustable LFO; diverse waveforms and synchronizable to host tempo • Versatile: External modulation (parameters), Step mode, and more • Unique Butterfly Meter: Shows LFO modulation and output level • Suitable for all musical genres and instruments • Stereo, adjustable phase modulation distance between both channels • Includes various presets for inspiration • Advanced Responsive Design, portrait and landscape views • Universal Purchase: AUv3 for iOS (iPad/iPhone), macOS and Vision Pro FAC Phazer will satisfy most fans of phasing effects, seducing them with its rich sonic palette and elegant interface. To achieve the classic phase effect, the original signal is blended with a slightly out-of-phase copy of itself. Altering the timing difference between the two signals produces the swooshing sound characteristic of phasing. Most phaser units available on the market are built around this circuit topology, each with its own specificities and limitations. Guitar pedals provide a great sonic signature out of the box and are a great source of inspiration, but we often overlook the impressive built-in effects sections of some hardware synthesizers. FAC Phazer combines the best of both worlds into a single plugin, offering access to all parameters involved in crafting the phasing effect. The design and development were inspired by both pedals and built-in phaser effects found in hardware synthesizers. This led to the creation of four unique characters: Classic, Midori, Step, and Tirus. All parameters can be applied to each of these characters, allowing you to create new, exciting, and outstanding sounds. The presets Slow, Moderate, and Jumpy Phase Pedal or also Fleur d’Oranger bring the classic pedals sound signature within your reach. If you're seeking more modern characteristics, the Step Sound I preset offers a splendid stepping mode, while the Midori Phase Shift II preset emphasizes the feedback in a unique way. On the other hand, the Tirus Anthem preset is an excellent starting point for exploring phasing effects produced with built-in synthesizer effects. An important aspect that strongly contributes to the variety of the sonic palette provided by the plugin is the modulation options. The LFO can run in free mode, be synchronized to the host tempo, or be defined by external automation parameters. The documentation is available at fredantoncorvest.com/FAC_Phazer.html
BLEASS Phaser
This versatile audio effect plugin injects unique character into guitar, keyboard, vocal, and bass sounds. It offers a wide range of phasing effects, from subtle movement to atmospheric soundscapes, with an intuitive visual interface.
- Versatile phasing effect
- Subtle movement to atmospheric soundscapes
- Intuitive visualizer
- Two LFO modulation sources
- Tactile interface design
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More subtle than flanging and more colourful than chorus, phasing has long been a go-to effect for guitarists, keyboardists, vocalists and bassists who want to inject a touch of other-worldly character into their sound. No effects collection is complete without a phaser! BLEASS Phaser delivers a comprehensive and highly versatile phasing effect. Whether you’re looking for gentle movement, resonant swirls, or stunning atmospheric soundscapes, BLEASS Phaser can do it all. The plugin’s interface is dominated by a colourful and captivating visualisation that illustrates the notch frequencies that create the phasing effect. This detailed and intuitive display, coupled with BLEASS’ trademark tactile interface design, demystifies the entire phasing process, and makes working with BLEASS Phaser a joy. Phasers use all-pass filters to create frequency-specific phase changes within a sound. When this sound is overlaid on the original unprocessed sound, it creates notch filters at the cutoff frequencies of the all-pass filters. By using multiple all-pass filters, with frequencies that spread from a “centre” frequency determined by the first all-pass filter, a complex comb filtering effect is generated. Adding modulation to the filter frequencies leads to the characteristic sweeping, whooshing sound that phasing is known for. BLEASS Phaser has two LFO modulation sources. The first modulates the notch filter cutoff frequencies, the second modulates the spread of notch frequencies around the initial centre frequency. This allows the plugin to create classic repetitive phasing effects, as well as complex, ever-shifting notch patterns that add tons of sonic interest to a part. With BLEASS Phaser in your collection, you will never need another phaser! More information on bleass.com/phaser
Screenshots
Verdict
The clearest difference is in-app purchases: BLEASS Phaser at none against FAC Phazer's 3. BLEASS Phaser also leads on review sentiment (100% vs 83%) and price ($6.99 vs $9.99). FAC Phazer's advantage is update cadence (every 4 months vs every 21 months). On rating, ratings volume, ads and monetization model 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
FAC Phazer costs $9.99 and BLEASS Phaser $6.99 up front. FAC Phazer sells 3 one-off in-app purchases. BLEASS Phaser asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for FAC Phazer against 5.0 for BLEASS Phaser. Both are backed by a comparable volume of ratings — 30 and 11 respectively. Written reviews are what separate them: 83% of FAC Phazer's written reviews are positive against 100% of BLEASS Phaser's.
FAC Phazer ships an update every 4 months, BLEASS Phaser every 21 months. The most recent releases landed on September 22, 2026 and August 26, 2026 respectively.
| Parameter | FAC Phazer | BLEASS Phaser |
|---|---|---|
| Price | $9.99 | $6.99 — better |
| Rating | 5.0 (30 ratings) | 5.0 (11 ratings) |
| Positive reviews | 83.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 30 — better | 11 |
| Update frequency | Every 4 months — better | Every 21 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.4 | 11.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Frederic Corvest | BLEASS |
Customer experience
FAC Phazer
BLEASS Phaser
In-app purchases
FAC Phazer
- Small Tip$1.99
- Medium Tip$4.99
- Large Tip$14.99
BLEASS Phaser
No in-app purchases









