Comparison

Kaign vs BPMDecibel

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

Head to head
About

Kaign

Create custom playlists from your music library based on release date, artist, and genre. Save dynamic playlists that update automatically or share filters with friends. Supports Apple Music and Spotify libraries.

Highlights
  • Visual filter editor
  • Create playlists by release date
  • Filter by artist
  • Dynamic playlist updates
  • Shareable filters
  • Supports Apple Music and Spotify
Features
Read full description

Did you ever want to listen to your favorite songs from the past three years? How about having your top five artists in one playlist? Kaign’s filters are here to make that and more happen, in the most convenient way: 1st filter - All songs with at least 4 stars released after 2014 2nd filter - All songs from a list of artists names. Kaign features a visual filters editor which lets you create the above filters quickly and intuitively. Once applied to your library, Kaign filters returns a playlist of songs matching your criteria. You could start listening to the playlist right away or save it as a dynamic playlist, which will get updated as you add and/or remove songs from your library that match its criteria. Because Kaign filters are not linked to any music provider, they are completely portable and sharable. You can share any filter you’ve created with your entourage via email or AirDrop. Once received on any apple device (iPad, iPhone, Mac) which has Kaign installed, the filter will automatically open and is ready to be saved and used. The usability of Kaign filters is almost unlimited. You can combine more than one filter both inclusively or exclusively on any Music library (Apple and Spotify currently supported) as Kaign relies on meta tags to apply filters. These meta tags could be in any language available in Unicode. Simply, you can filter by genres, titles and artists’ names in English, Korean, Japanese, Punjab, Russian, Persian, Romanian, Afrikaans, Arabic, Latin, German, Italian, Spanish, French, Tasmanian, Mandarin, Polish, Bulgarian, Croatian, Serbian, Dutch, etc. We are working hard to translate the Kaign interface in as many languages as we can.

About

BPMDecibel

Features
Read full description

Measure the world of sound with two powerful tools in one simple app: - Decibel meter – instantly monitor the sound level around you. Track current dB values and peak levels with precision. - BPM detector – detect the tempo (beats per minute) of music, rhythms, or any audio source in real time. Why BPMDecibel? - Built entirely in SwiftUI for a clean, modern experience. - Lightweight and fast: no unnecessary features, just what you need. - Works completely offline, with no ads and no third-party services. - Your data stays on your device — nothing is shared or tracked. - Perfect for musicians, audio enthusiasts, or anyone curious about sound and rhythm. BPMDecibel — clean, private, and focused on what matters: sound.

Screenshots

Kaign1 screens
BPMDecibel2 screens

Verdict

The call

The clearest difference is price: Kaign at Free against BPMDecibel's $4.99. Kaign also leads on device support (4 vs 2) and iOS requirement (15.6 vs 17.0). BPMDecibel's advantage is in-app purchases (none vs 7). On 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

Kaign is free to download; BPMDecibel costs $4.99 up front. Kaign sells 7 one-off in-app purchases. BPMDecibel asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
Kaign versus BPMDecibel: the parameters behind the verdict, then further details
ParameterKaignBPMDecibel
PriceFree — better$4.99
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size12 MB1 MB
Age rating4+4+
DeveloperFrancois-Michel SchumakerMarco Tini

In-app purchases

7 purchases

Kaign

One-time7
  • 5 Filters Pack 1$0.99
  • 5 Filters Pack 2$0.99
  • 5 Filters Pack 3$0.99
Show 4 more
  • 15 Filters Value Pack$1.99
  • Extras Value Pack$1.99
  • 25 Filters Super Value Pack$2.99
  • 50 Filters Mega Value Pack$3.99
None

BPMDecibel

No in-app purchases

Questions

Is Kaign free?
Kaign is free to download, with in-app purchases available.
Is BPMDecibel free?
BPMDecibel costs $4.99, with no in-app purchases.
Do Kaign or BPMDecibel have ads?
Neither Kaign nor BPMDecibel shows ads.
Which is updated more often, Kaign or BPMDecibel?
Kaign ships an update every 2 months, and BPMDecibel every 2 months. Most recently, Kaign was updated on October 29, 2026 and BPMDecibel on October 25, 2026.

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