# iVCS3 vs Tera Pro

The clearest difference is price: Tera Pro at $6.99 against iVCS3's $19.99. Tera Pro also leads on update cadence (every 5 days vs every 2 months) and iOS requirement (12.0 vs 17.0). iVCS3's advantage is rating (4.9 vs 4.6) and review sentiment (91% vs 69%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

iVCS3 costs $19.99 and Tera Pro $6.99 up front. iVCS3 sells 10 one-off in-app purchases and Tera Pro sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

iVCS3 holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 206 and 155 respectively. Written reviews point the same way: 91% of iVCS3's written reviews are positive against 69% of Tera Pro's.

iVCS3 ships an update every 2 months, Tera Pro every 5 days. The most recent releases landed on September 26, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | iVCS3 | Tera Pro |
| --- | --- | --- |
| Price | $19.99 | **$6.99** |
| Rating | **[4.9 (206 ratings)](https://appshunter.io/ios/app/ivcs3/id665703927/reviews)** | [4.6 (155 ratings)](https://appshunter.io/ios/app/tera-pro/id1578464219/reviews) |
| Number of ratings | **206** | 155 |
| Positive reviews | **90.6% of reviews** | 69.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 107 MB | 306 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [apeSoft](https://appshunter.io/developer/464660782) | [Harry Gohs](https://appshunter.io/developer/382428644) |

## What reviewers say

### iVCS3

[App page](https://appshunter.io/ios/app/ivcs3/id665703927)

This application emulates the iconic EMS VCS3 synthesizer, a pioneering portable synthesizer from 1969. It recreates the original's unique sound generation capabilities, including its oscillators, filters, and patch matrix, allowing users to explore its distinctive sonic palette.

**Highlights:** Official EMS VCS3 emulation, Three oscillators (2 VCOs, 1 LFO), Noise generator, Voltage controlled low pass filter (VCF), Patch board matrix, Joy-stick controller, Voltage controlled spring reverb

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Red Sky Lullaby - 180 Presets | Free | one-time |
| Singe Difficile by RUST(i)K | Free | one-time |
| RUMBLE | Free | one-time |
| OLD GRIT - COLLECTION | Free | one-time |
| JEC 2018 Iconic PinkFloyd | Free | one-time |
| JEC EMS-50 | Free | one-time |
| SINAPSYA - Under The Dust | $2.99 | one-time |
| LALA - Sonic Pleasures | $3.99 | one-time |
| JEC Mega Bank | $4.99 | one-time |
| Essential EMS Modifications | $6.99 | one-time |

**What reviewers like**

- 🚀 Faithful recreation of the original
- 👍 Powerful and versatile sound
- 🎨 Gorgeous vintage interface
- 💡 Additional features beyond the original
- 🎛️ Excellent integration with MIDI and other apps

**What reviewers complain about**

- 🐛 Occasional crashes and bugs
- 🤔 Steep learning curve
- 🔍 Difficult to navigate the matrix

**Reported bugs**

- Presets not loading
- Crashes on iOS 15.04
- Sampler not functioning properly

**Requested features**

- Mac compatibility
- Improved preset management
- Expanded sampling capabilities


### 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 iVCS3 free?

iVCS3 costs $19.99, and also offers in-app purchases.

### Is Tera Pro free?

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

### Which has better reviews, iVCS3 or Tera Pro?

iVCS3 is rated higher. iVCS3 averages 4.9 out of 5 from 206 ratings, while Tera Pro averages 4.6 from 155 ratings.

### Do iVCS3 or Tera Pro have ads?

Neither iVCS3 nor Tera Pro shows ads.

### Which is updated more often, iVCS3 or Tera Pro?

iVCS3 ships an update every 2 months, and Tera Pro every 5 days. Most recently, iVCS3 was updated on September 26, 2026 and Tera Pro on September 25, 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.*