# DXi FM synthesizer vs Tera Pro

The clearest difference is in-app purchases: DXi FM synthesizer at none against Tera Pro's 6. DXi FM synthesizer also leads on price ($1.99 vs $6.99) and review sentiment (88% vs 69%). Tera Pro's advantage is update cadence (every 5 days vs every 2 months) and rating (4.6 vs 4.3). On ads and device support there is nothing between them.

DXi FM synthesizer costs $1.99 and Tera Pro $6.99 up front. Tera Pro sells 6 one-off in-app purchases. DXi FM synthesizer asks for nothing beyond the download.

Tera Pro holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Tera Pro has 154 ratings behind it against 19, so its average is the more settled of the two. Written reviews complicate that: 88% of DXi FM synthesizer's written reviews are positive against 69% of Tera Pro's, so the app with the better star average is not the one people write more warmly about.

DXi FM synthesizer ships an update every 2 months, Tera Pro every 5 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | DXi FM synthesizer | Tera Pro |
| --- | --- | --- |
| Price | **$1.99** | $6.99 |
| Rating | [4.3 (19 ratings)](https://appshunter.io/ios/app/dxi-fm-synthesizer/id370138065/reviews) | **[4.6 (154 ratings)](https://appshunter.io/ios/app/tera-pro/id1578464219/reviews)** |
| Number of ratings | 19 | **154** |
| Positive reviews | **87.6% of reviews** | 69.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 5 MB | 306 MB |
| Requires iOS | **8.4** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takashi Mizuhiki](https://appshunter.io/developer/370138068) | [Harry Gohs](https://appshunter.io/developer/382428644) |

## What reviewers say

### DXi FM synthesizer

[App page](https://appshunter.io/ios/app/dxi-fm-synthesizer/id370138065)

Create unique sounds and music with this FM synthesizer app inspired by 80s hardware. Explore a variety of parameters to craft special tones and effects, and even record your creations. Includes a bonus 16-step loop sequencer for added musical exploration.

**Highlights:** 4 operator FM synthesis, 8 algorithms, Adjustable operator parameters, Master LPF and Delay effects, 16-step loop sequencer, Audio recording and export, MIDI keyboard support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Tera Pro

[App page](https://appshunter.io/ios/app/tera-pro/id1578464219)

Explore a vast array of sound synthesis methods, from analog emulations to modern digital techniques. Combine modules for unique sonic textures, enhanced by an intelligent interface and realtime visual feedback. Expand your sound palette with additional modules available through in-app purchases.

**Highlights:** Multiple synthesis methods (analog, FM, spectral, additive), Physical modeling and wave shaping, Intelligent user interface with realtime scopes, Flexible module routing, 128-voice polyphony with vintage voice modeling, Seamless sound switching, Extensive preset library

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Library WaveShaper | $0.99 | one-time |
| Module Waves | $5.99 | one-time |
| FM 7 module | $5.99 | one-time |
| Module RingZ | $5.99 | one-time |
| Module BrainZ | $6.99 | one-time |
| Module CloudZ | $9.99 | one-time |

**What reviewers like**

- 🎵 Exceptional sound quality and versatile synthesis capabilities
- 💡 Innovative modular workflow with flexible architecture
- 🎛️ Extensive preset library (1000+ presets)
- 🔧 Powerful sound design tools with multiple synthesis types
- 📱 Available on both iOS and macOS (M1)

**What reviewers complain about**

- 🎮 Steep learning curve and complex UI
- ⌨️ Unconventional on-screen keyboard design
- 🐛 Frequent crashes and stability issues
- 🔊 Dangerously loud output without limiter
- ⚙️ UI elements sometimes unresponsive or laggy

**Reported bugs**

- App crashes on macOS and iOS
- Piano keyboard not appearing
- Wavetable module IAP producing no sound
- In-app purchases disappearing or not activating
- Presets causing white noise or feedback blasts

**Requested features**

- Undo/Redo functionality
- MIDI Panic button (prominent placement)
- Output limiter for safety
- Standard black and white keyboard option
- Favorites/bookmarking system for presets


## Frequently asked questions

### Is DXi FM synthesizer free?

DXi FM synthesizer costs $1.99, with no in-app purchases.

### Is Tera Pro free?

Tera Pro costs $6.99, and also offers in-app purchases.

### Which has better reviews, DXi FM synthesizer or Tera Pro?

Tera Pro is rated higher. DXi FM synthesizer averages 4.3 out of 5 from 19 ratings, while Tera Pro averages 4.6 from 154 ratings.

### Do DXi FM synthesizer or Tera Pro have ads?

Neither DXi FM synthesizer nor Tera Pro shows ads.

### Which is updated more often, DXi FM synthesizer or Tera Pro?

DXi FM synthesizer ships an update every 2 months, and Tera Pro every 5 days. Most recently, DXi FM synthesizer was updated on November 1, 2026 and Tera Pro on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*