Kepler Round Beat Box 2 vs Rifflet
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kepler Round Beat Box 2
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Kepler Round Beat Box is a music beat box. MAIN PANEL - Dragging the edge of round black plate can change volume. - Dragging a center ball makes sway the rhythm. - To stop sway mode touch and release at the same position on the round plate. - On metronome mode shows ringing pattern buttons. SETTING PANEL - Swing Setting -- No Swing -- Triplet Swing -- Golden selection Swing - Sound Selection -- Rock (default 16 beats) -- Samba (sample samba beats) -- Latin (sample latin beats) -- Broken beat (sample broken beat) -- Metronome
Rifflet
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Rifflet turns a short music idea into a playable lesson. Type a prompt, generate a local sound, pick Piano, Guitar, or Ukulele, follow the notes as keys or tab, hear local instrument playback, and save or share the riff card. The app is intentionally simple: local audio generation, coach tips, saved riff ideas, piano playback, and guided practice views. It does not require an account, network login, or cloud AI key.
Screenshots
Verdict
The clearest difference is update cadence: Rifflet at monthly against Kepler Round Beat Box 2's every 19 months. Rifflet also leads on device support (4 vs 2). Kepler Round Beat Box 2's advantage is iOS requirement (12.0 vs 17.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Kepler Round Beat Box 2 ships an update every 19 months, Rifflet monthly. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.
| Parameter | Kepler Round Beat Box 2 | Rifflet |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 19 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomohisa Himeno | Anupam Chugh |
In-app purchases
Kepler Round Beat Box 2
No in-app purchases
Rifflet
No in-app purchases
Questions
Is Kepler Round Beat Box 2 free?
Is Rifflet free?
Do Kepler Round Beat Box 2 or Rifflet have ads?
Which is updated more often, Kepler Round Beat Box 2 or Rifflet?
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