Comparison

Stellr vs BLEASS Flanger

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

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.

Highlights
  • Flexible LFOs
  • Envelope generator
  • Beat synchronization
  • Variable modulation routing
  • Multi-mode input filter
  • Stereo width control
Read full description

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

Stellr2 screens
BLEASS Flanger3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Stellr costs $4.99 and BLEASS Flanger $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Stellr versus BLEASS Flanger: the parameters behind the verdict, then further details
ParameterStellrBLEASS Flanger
Price$4.99$3.99 — better
Rating3.4 (9 ratings)5.0 (13 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings913 — better
Update frequencyEvery 40 monthsEvery 31 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size26 MB27 MB
Age rating4+4+
DeveloperBACKPULLVER SOFTWARE LTD OODBLEASS

Customer experience

Stellr

All ratings9 ratings
Positive55.6%
Neutral11.1%
Negative33.3%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

BLEASS Flanger

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stellr

No in-app purchases

None

BLEASS Flanger

No in-app purchases

Questions

Is Stellr free?
Stellr costs $4.99, with no in-app purchases.
Is BLEASS Flanger free?
BLEASS Flanger costs $3.99, with no in-app purchases.
Which has better reviews, Stellr or BLEASS Flanger?
BLEASS Flanger is rated higher. Stellr averages 3.4 out of 5 from 9 ratings, while BLEASS Flanger averages 5.0 from 13 ratings.
Do Stellr or BLEASS Flanger have ads?
Neither Stellr nor BLEASS Flanger shows ads.
Which is updated more often, Stellr or BLEASS Flanger?
Stellr ships an update every 40 months, and BLEASS Flanger every 31 months. Most recently, Stellr was updated on November 2, 2026 and BLEASS Flanger on November 4, 2026.

Other comparisons