Stellr vs BLEASS Flanger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stellr
Create deep, ethereal ambiance with a pitch-shifter, dual delays, and reverb. Explore sonic possibilities with 15 presets, randomization, and parameter automation. Enhance your music with a new dimension of sound.
- Pitch shifter with fine-tuning or semitone snap
- Two independent delays for complex feedback
- LFO modulation and various reverb types
- Pre-gain and dry/wet level control
- Audio Unit Extension, Audiobus, Inter-App Audio support
- 15 built-in presets with import/export
- Realtime frequency spectrum visualizer
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Stellr is a pitch-shifter/delay/reverb sound processor aimed to recreate the classic shimmer effect. It makes deep ethereal ambiance on top of your sound, providing you with a wide variety of sonic possibilities. Add a new dimension to your music. The effect features 20 ready to use presets which can be shared between devices as well as randomize button for endless variations. When loaded as Audio Unit effect, all parameters can be automated via host app. Stellr main features: – Pitch shifter which can be fine-tuned or snapped to semitone – Two separate delays for creating a complex feedback effect – LFO modulation and different types of reverb – Set pre-gain and dry/wet levels – Audio Unit Extension support – 20 built-in presets – Low-pass and High-pass filters – Ability to save and randomize parameters – Import and export of user presets – Realtime frequency spectrum visualizer
BLEASS Flanger
This audio effect app provides a modern take on classic flanging, offering flexible modulation sources, an envelope generator, and beat synchronization. It allows for complex and evolving timbral movement within your sound, with intuitive controls and efficient CPU usage.
- Flexible LFOs
- Envelope generator
- Beat synchronization
- Variable modulation routing
- Multi-mode input filter
- Stereo width control
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BLEASS Flanger harnesses the sonic characteristics of classic flanger effects and brings them fully up-to-date with a pair of flexible LFOs, variable modulation routing, an envelope generator and beat synchronisation. Classic flangers are a delay-based effect, and modulate the delay time to create the distinctive, repetitive flanged sound. But with BLEASS Flanger, multiple modulation sources are combined to create detailed, complex and evolving timbral movement within your sound. The addition of an envelope generator, which is triggered by the incoming signal, adds an additional dimension to the flanger effect, making it sensitive to the dynamics and nuances of your performances. The second LFO can take the sonic possibilities further still, with the option for it to modulate the delay’s feedback strength or stereo width. The tonal character of the effect can be controlled easily thanks to the multi-mode input filter, whilst the ability to synchronise the LFOs to the beat of your music allows you to explore completely new rhythmic and evolving effects. BLEASS’ trademark interface design ensures this powerful collection of tools are both easy and fun to work with, so you can harness their sonic versatility without ever hindering your musical creativity. And with super-efficient CPU usage, and compatibility with all major hosts and DAWs on desktop, iPad or iPhone, BLEASS Flanger is the only flanger you will ever need. More information on https://www.bleass.com/flanger/
Screenshots
Verdict
The clearest difference is rating: BLEASS Flanger at 5.0 against Stellr's 3.4. BLEASS Flanger also leads on review sentiment (100% vs 67%) and price ($3.99 vs $4.99). On ratings volume, update cadence, 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
Stellr costs $4.99 and BLEASS Flanger $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BLEASS Flanger holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 9 and 13 respectively. Written reviews point the same way: 67% of Stellr's written reviews are positive against 100% of BLEASS Flanger's.
Stellr ships an update every 40 months, BLEASS Flanger every 31 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.
| Parameter | Stellr | BLEASS Flanger |
|---|---|---|
| Price | $4.99 | $3.99 — better |
| Rating | 3.4 (9 ratings) | 5.0 (13 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 9 | 13 — better |
| Update frequency | Every 40 months | Every 31 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | BACKPULLVER SOFTWARE LTD OOD | BLEASS |
Customer experience
Stellr
BLEASS Flanger
In-app purchases
Stellr
No in-app purchases
BLEASS Flanger
No in-app purchases









