Comparison

Trope vs Relic Flow

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

Head to head
About

Trope

Create evolving soundscapes by tracing abstract shapes on your screen. This app offers a darker, more introspective and atmospheric musical experience, ideal for generative music exploration. Recommended for use with headphones or external speakers.

Highlights
  • Generative soundscape creation
  • Interactive touch interface
  • Evolving musical textures
  • Introspective and atmospheric tone
  • Abstract shape tracing
Features
Read full description

Trope, designed by ambient pioneer Brian Eno and musician / software designer Peter Chilvers, expands further on the ideas introduced by Bloom, their acclaimed iPhone application.  Darker in tone, Trope immerses users in endlessly evolving soundscapes created by tracing abstract shapes onto the screen, varying the tone with each movement. Recommended for headphones and external speakers. "Trope is a different emotional experience from Bloom - more introspective, more atmospheric. It shows that generative music, as one of the newest forms of sonema, can draw on a broad palette of moods." - Brian Eno

About

Relic Flow

Generate unique Lo-Fi rhythms, noise patterns, and drum loops using advanced synthesis algorithms. Explore billions of sound samples with intuitive controls and real-time audio recording. Perfect for musicians and sound designers seeking endless creative possibilities.

Highlights
  • Lo-Fi rhythm and drum loop generation
  • Billions of unique sound samples
  • Real-time audio recording to WAV
  • Multiple input methods (on-screen, PC keyboard, MIDI)
  • Export to WAV, SunVox, and text clipboard
  • iOS Audio Unit Extension (AUv3) support
Features
Read full description

Relic Flow is a generator of Lo-Fi rhythms, noise patterns and drum loops based on unique synthesis algorithms from NightRadio. More than 4 billion samples from the depths of the Mathematical Universe! Features: * search for new sounds with three buttons: next random set, edit code, previous set; each set of 12 sounds corresponds to a code of 8 characters; * three types of keyboards for live performing: on-screen buttons, PC keyboard, MIDI input; * several processing parameters + control via MIDI; * real-time audio recording to WAV (32-bit); * export to: WAV (one file or a set), SunVox (samples + effects in one file), text clipboard; * the LCK button freezes individual samples - they will not change during the search for new sets; * iOS Audio Unit Extension (AUv3). Double clicking on a parameter opens a window for setting the exact value. If you enable the Hold option, the notes will play endlessly, without reacting to key release (noteOff) events; turning the note on again works like turning it off; there are two ways to enable this option: 1) using the Hold parameter in the "MIDI Mapping" window; 2) by pressing the HOLD button, which appears in place of LCK while playing the musical keyboard: press HOLD, release the desired notes - then the released notes will continue to play.

Screenshots

Trope4 screens
Relic Flow2 screens

Verdict

The call

Trope and Relic Flow both sit at 4.8 stars, but that hides the real split: 93% of Relic Flow's written reviews are positive against 64% of Trope's. Relic Flow also leads on price ($1.99 vs $3.99) and iOS requirement (12.0 vs 15.6). On rating, ratings volume, update cadence 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

Trope costs $3.99 and Relic Flow $1.99 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 — 4.8 for Trope against 4.8 for Relic Flow. Both are backed by a comparable volume of ratings — 38 and 26 respectively. Written reviews are what separate them: 64% of Trope's written reviews are positive against 93% of Relic Flow's.

UpkeepUpdate frequency

Trope ships an update every 34 months, Relic Flow every 17 months. The most recent releases landed on September 27, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 7 level
Trope versus Relic Flow: the parameters behind the verdict, then further details
ParameterTropeRelic Flow
Price$3.99$1.99 — better
Rating4.8 (38 ratings)4.8 (26 ratings)
Positive reviews63.7% of reviews93.3% of reviews — better
Number of ratings38 — better26
Update frequencyEvery 34 monthsEvery 17 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size39 MB6 MB
Age rating4+4+
DeveloperOpal LimitedAlexander Zolotov

Customer experience

Trope

All ratings38 ratings
Positive94.7%
Neutral5.3%
Negative0.0%
Written reviews146 reviews
Positive63.7%
Neutral11.6%
Negative24.7%

Relic Flow

All ratings26 ratings
Positive96.2%
Neutral0.0%
Negative3.8%
Written reviews15 reviews
Positive93.3%
Neutral0.0%
Negative6.7%

Bugs and requests

Trope

Reported bugs

12 issues
  • Does not run in background/sleep mode
  • App speeds up sleep timer
  • Errors about iOS 11 incompatibility
  • Cannot listen and create after update
  • Screen looks awful (outdated UI)
Show 7 more
  • App doesn't work/programmed feel
  • Music doesn't stop when app is closed
  • Sleep timer not working correctly in iOS6
  • Glitchy sound/static at note start
  • ノイズが入る (Noise occurs)
  • 音が割れる (Sound distortion/crackling)
  • Bug that changes line type back to default after erasing

Requested features

11 requests
  • Ability to save compositions
  • Option to turn off random background noises
  • More control over sound parameters (attack, duration)
  • User sound input option
  • Recording function
Show 6 more
  • More variety in sounds and moods
  • Mac app store version
  • Streaming to AirPort Express
  • Improve responsiveness to touches
  • Option to remove random tones
  • Background tasking/multitasking improvements

Relic Flow

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Trope

No in-app purchases

None

Relic Flow

No in-app purchases

Questions

Is Trope free?
Trope costs $3.99, with no in-app purchases.
Is Relic Flow free?
Relic Flow costs $1.99, with no in-app purchases.
Which has better reviews, Trope or Relic Flow?
Trope and Relic Flow are both rated 4.8 out of 5 on the App Store, from 38 and 26 ratings respectively.
Do Trope or Relic Flow have ads?
Neither Trope nor Relic Flow shows ads.
Which is updated more often, Trope or Relic Flow?
Trope ships an update every 34 months, and Relic Flow every 17 months. Most recently, Trope was updated on September 27, 2026 and Relic Flow on September 17, 2026.

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