STEPS vs jAmp Doubler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STEPS
Create complex rhythmic patterns with this powerful MIDI sequencer. Control any MIDI-compatible app, send MIDI over network, and synchronize external hardware synths. Features a user-friendly interface for seamless performance and editing.
- MIDI-out system
- Bluetooth LE MIDI support
- Audiobus 3 support
- External hardware synchronization
- Performance and editing modes
- Ableton Link integration
- Global swing and BPM control
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Steps by Reactable is a small yet powerful MIDI sequencer that allows you to create complex rhythmic patterns in a surprising new way. Forget piano rolls and experiment with Steps’ inspiring dials. With Steps you can control any MIDI compatible app, send MIDI over network to your laptop or any other compatible device, and even synchronize external hardware analog synths such as Korg Volcas or Pocket Operators via an audio cable. Features: - Plug and play MIDI-out system automatically sends to all available MIDI input ports and our own virtual port. - Bluetooth LE MIDI support - Audiobus 3 Support as MIDI and Audio Sender - Connect your iDevice with an external MIDI interface and control MIDI hardware. - Synchronize external hardware synths such as Korg Volca or Pocket operators via the audio output. - A carefully designed user interface that allows you to quickly switch between performance to editing mode. - Play together with Ableton Link and sync multiple apps and devices over WiFi. - Global Swing function (50% - 75%) - applied automatically to eight and sixteenth notes. - Save and recall sequences, seamlessly during playback. - Global bpm control ranging from 20 to 999 BPM. - Global Gate level allows global control of note duration. - Global MIDI velocity control. - Global Glide function applies pitch bend to small distances between adjacent steps (if the synth being controlled supports pitch bend). - Global transpose ribbon allows for easy transposition of the entire pattern. - Step pitch preview function (available while transport is stopped).
jAmp Doubler
This audio plugin creates a stereo effect by introducing a subtle delay to one audio channel. It offers precise control over the delay time and can be managed via MIDI. Ideal for enhancing mono audio sources with a wider soundstage.
- Stereo widening effect
- Adjustable delay time (0-50 microseconds)
- MIDI control
- AUv3 plugin format
- Enhances mono audio
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Doubler is an AUv3 plugin that adds stereo effect by delaying the right channel wrt the left channel. The delay is controlled by the central knob and goes from 0 microseconds to 50 microseconds. It is possible to control this plugin via MIDI.
Screenshots
Verdict
The clearest difference is price: jAmp Doubler at Free against STEPS's $0.99. jAmp Doubler also leads on review sentiment (100% vs 56%) and rating (5.0 vs 3.9). STEPS's advantage is ratings volume (13 vs 4) and iOS requirement (9.0 vs 14.0). On ads, in-app purchases and device support 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
jAmp Doubler is free to download; STEPS costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
jAmp Doubler holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 13 and 4 respectively. Written reviews point the same way: 56% of STEPS's written reviews are positive against 100% of jAmp Doubler's.
STEPS ships an update every 3 weeks, jAmp Doubler every 9 days. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.
| Parameter | STEPS | jAmp Doubler |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.9 (13 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 55.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 13 — better | 4 |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 9.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 7 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Reactable Systems SL | Jan Maes |
Customer experience
STEPS
jAmp Doubler
In-app purchases
STEPS
No in-app purchases
jAmp Doubler
No in-app purchases









