JB Timing Trainer vs 4Comp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JB Timing Trainer
Master your rhythm with this advanced metronome app. It offers versatile subdivisions, musical drones, and customizable beat patterns for precise musical practice. Includes video tutorials to help you utilize all features.
- Versatile subdivisions (1-21 per beat)
- Musical drones for practice enhancement
- Customizable beats and complex patterns
- Seamless subdivision switching
- Silent beats for tempo retention
- Save and access favorite beat patterns
- In-app video tutorials
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Master Your Timing with JB Timing Trainer - The Ultimate Metronome for Precision Practice Unlock your rhythmic potential with this ultimate metronome designed for precision practice. Perfect your timing with advanced subdivision features and enhance your musical accuracy effortlessly. Features: • Versatile Subdivisions: Practice with 1-21 subdivisions per beat for precise timing. • Musical Drones: Enhance your sessions with background musical drones. • Advanced Mode: Customize your beats and create complex patterns. • Dynamic Practice: Switch between subdivisions seamlessly to challenge your skills. • Silent Beats: Test your tempo retention with inserted silent beats. • Easy Presets: Save and quickly access your favorite beat patterns. • In-App Video Tutorials: Learn to use all features effectively with step-by-step video guides. • Works equally well in portrait and landscape mode. Transform your practice sessions and achieve perfect timing. Download JB Timing Trainer now and experience a new level of precision in your music!
4Comp
This audio plugin offers four distinct analog-style compressor models (FET, VCA, Optical, Vari-Mu), each with its own sound and interface. It provides advanced features like stereo linking, sidechain filtering, and real-time transfer curve visualization.
- Four analog compressor models (FET, VCA, Optical, Vari-Mu)
- Unique DSP engine and interface for each model
- Live transfer curve visualization
- Stereo link and sidechain high-pass filter
- Dry/wet mix and auto make-up gain
- 17 presets included
- 0-sample latency
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Four analog-style compressors in one AUv3 plugin: FET, VCA, Optical and Vari-Mu. Each is its own DSP engine with its own sound, and the whole interface — face, knobs, meters — changes to match the one you pick. New in 1.1: tap ? for a quick start and a guide to each model, and watch the live transfer curve on VCA. FET Fast gain reduction from a feedback detector, with an all-buttons mode. Hi-hats, drum buses, spiky guitars. Ice-blue face. VCA Bus glue with program-dependent AUTO release. Tames transients and spikes without grabbing. Crimson face. Optical Smooth, level-dependent release from a modelled photocell — the cell's light memory. Vocals, brass, strings. Electroluminescent-green face. Vari-Mu A ratio that rises with level, plus harmonic colour that thickens thin tracks. Mix bus and mastering. Brass face. Four separate DSP paths Each model is its own compressor engine rather than a preset over one circuit: feedback FET, two-stage VCA, photocell release, rising-ratio tube. Switch faceplates mid-session and the plugin animates to the new model's look. Complement it Stereo link (Linked or Dual Mono), sidechain high-pass, dry/wet mix, input/output and auto make-up gain, a gain-reduction meter styled for each model and 17 presets. Real-time-safe DSP, 0-sample latency by default. Works in GarageBand, AUM, Cubasis, Loopy Pro and other AUv3 hosts on iPhone and iPad.
Screenshots
Verdict
The clearest difference is price: 4Comp at $4.99 against JB Timing Trainer's $14.99. 4Comp also leads on update cadence (weekly vs every 5 months). On rating, ratings volume, 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
JB Timing Trainer costs $14.99 and 4Comp $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for JB Timing Trainer against 5.0 for 4Comp. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
JB Timing Trainer ships an update every 5 months, 4Comp weekly. Both last shipped on October 24, 2026.
| Parameter | JB Timing Trainer | 4Comp |
|---|---|---|
| Price | $14.99 | $4.99 — better |
| Rating | 5.0 (2 ratings) | 5.0 (2 ratings) |
| Number of ratings | 2 | 2 |
| Update frequency | Every 5 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 36 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Son of a Bjork AB | NATHAN THOMAS MATHIS |
Customer experience
JB Timing Trainer
4Comp
In-app purchases
JB Timing Trainer
No in-app purchases
4Comp
No in-app purchases









