3D Synth vs MetroCore
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3D Synth
This app is a touch synthesizer that allows continuous pitch control for expressive playing. It offers various sound-shaping tools and effects, along with on-device recording capabilities for sharing and backup.
- Chromatic touch interface
- Real-time responsive play
- Multiple oscillator and FM instruments
- ADSR envelope shaping
- Reverb, delay, distortion, EQ effects
- On-device audio recording
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3DSynth! A chromatic touch synthesizer and on-device recorder. Chromatic by design - 3DSynth lets you play all notes and frequencies continuously—not locked to MIDI steps—so you control pitch directly with your finger like a real instrument! Real-time, responsive play - Low latency and immediate feedback keep your phrasing natural and expressive while you glide and shape the note in motion. Shape your sound - Choose different instruments (oscillator, FM, plucked), sculpt with ADSR and add effects like reverb, modulation, delay, distortion, and EQ! Record on device - Capture your takes directly to the app’s local recordings folder for sharing and backup. **Important** Deleting the app removes its local data, including recordings and settings. Export anything you want to keep before uninstalling or resetting the device. Enjoy and thanks for downloading!
MetroCore
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- Sample-accurate metronome - Audio-thread scheduling for rock-solid timing - Clear downbeat and accent distinction - Click with your finger for adjust the tempo rate - Multiple sound types - Flexible time signatures and subdivisions - Studio, Stage, and Night visual themes - Background playback and lock screen support - Designed for musicians, not demos. Powered by Apple Audio Engine Technology, MetroCore runs all timing logic on the audio thread, stable and accurate. Designed for real-world use, MetroCore adapts to studio, stage, and night environments with carefully tuned visual times and clear accent differentiation. No gimmicks, No distractions. Just precise time at the core of your music.
Screenshots
Verdict
The clearest difference is price: 3D Synth at Free against MetroCore's $2.99. On ads, in-app purchases, device support and iOS requirement 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
3D Synth is free to download; MetroCore costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | 3D Synth | MetroCore |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.5 | 17.6 — better |
| Further details — not scored | ||
| Size | 9 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | David Noy | Fuxing Xue |
In-app purchases
3D Synth
No in-app purchases
MetroCore
No in-app purchases









