# SynthMaster One for iPhone vs E Piano Synth

The clearest difference is review sentiment: SynthMaster One for iPhone at 66% against E Piano Synth's 0%. SynthMaster One for iPhone also leads on ads (none vs shown) and rating (4.7 vs 4.5). E Piano Synth's advantage is in-app purchases (none vs 10). On price, update cadence and device support there is nothing between them.

Both are free to download. SynthMaster One for iPhone sells 10 one-off in-app purchases. E Piano Synth asks for nothing beyond the download.

SynthMaster One for iPhone holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: SynthMaster One for iPhone has 332 ratings behind it against 34, so its average is the more settled of the two. Written reviews point the same way: 66% of SynthMaster One for iPhone's written reviews are positive against 0% of E Piano Synth's.

SynthMaster One for iPhone ships an update every 2 months, E Piano Synth every 6 weeks. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | SynthMaster One for iPhone | E Piano Synth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (332 ratings)](https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617/reviews)** | [4.5 (34 ratings)](https://appshunter.io/ios/app/e-piano-synth-keyboard-tiles/id1513122706/reviews) |
| Number of ratings | **332** | 34 |
| Positive reviews | **66.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 297 MB | 140 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [KV331 Audio](https://appshunter.io/developer/944155925) | [Satomi Uchida](https://appshunter.io/developer/1340507560) |

## What reviewers say

### SynthMaster One for iPhone

[App page](https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617)

This powerful wavetable synthesizer app offers an intuitive workflow for creating new sounds. It features a rich library of wavetables, inspiring factory presets, and real-time modulation feedback for sound design.

**Highlights:** Wavetable synthesis, 300 factory presets, AUv3 support, Files App integration, Real-time modulation feedback, Semi-modular architecture, 32-step arpeggiator/sequencer

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BigTone Club Construction Set | $4.99 | one-time |
| True Trance Sounds Volume 1 | $4.99 | one-time |
| Vandalism Future House | $4.99 | one-time |
| NatLife Retrowave Sounds Vol.1 | $4.99 | one-time |
| Demis Hellen Euphoric Trance | $4.99 | one-time |
| NatLife Progressive&Deep Vol.1 | $4.99 | one-time |
| Vandalism Shocking Future Bass | $4.99 | one-time |
| Venus Theory Trap Sounds | $4.99 | one-time |
| Desktop Presets Upgrade | $9.99 | one-time |
| SM One Expansions Bundle | $24.99 | one-time |

**What reviewers like**

- ✨ Excellent sound quality
- 🤩 Incredible features for free
- 👍 Easy to use interface
- 🎛️ Versatile sound design capabilities
- 🎵 Great for GarageBand integration

**What reviewers complain about**

- 🐛 Frequent crashes
- 🔌 Issues with GarageBand integration
- 💸 In-app purchase problems
- 🔄 Presets not saving
- 📉 App appears abandoned

**Reported bugs**

- App crashes when loading saved presets
- App crashes when setting default sound
- AUv3 option disappears in GarageBand
- Inability to reload user patches without crashing
- Inability to purchase certain IAP packs

**Requested features**

- Fix in-app purchase issues
- Improve GarageBand AUv3 stability
- Enable saving of custom presets
- Address crashing when loading presets
- Fix note pitch issues


### E Piano Synth

[App page](https://appshunter.io/ios/app/e-piano-synth-keyboard-tiles/id1513122706)

This application offers a virtual piano keyboard with customizable sound settings for both basic and effect synthesizers. Adjust parameters like attack, sustain, and release, and explore a wide range of effects. It features adjustable octaves and keyboard sizes, along with recording and looping capabilities.

**Highlights:** Customizable piano sound settings, Extensive effect synthesizer options, Adjustable octave and keyboard size, Recording and loop functions, Suitable for jam sessions and lessons, Score display for iPad users

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

**In-app purchases:** none


## Frequently asked questions

### Is SynthMaster One for iPhone free?

SynthMaster One for iPhone is free to download, with in-app purchases available.

### Is E Piano Synth free?

E Piano Synth is free to download, with no in-app purchases.

### Which has better reviews, SynthMaster One for iPhone or E Piano Synth?

SynthMaster One for iPhone is rated higher. SynthMaster One for iPhone averages 4.7 out of 5 from 332 ratings, while E Piano Synth averages 4.5 from 34 ratings.

### Do SynthMaster One for iPhone or E Piano Synth have ads?

E Piano Synth shows ads; SynthMaster One for iPhone does not.

### Which is updated more often, SynthMaster One for iPhone or E Piano Synth?

SynthMaster One for iPhone ships an update every 2 months, and E Piano Synth every 6 weeks. Most recently, SynthMaster One for iPhone was updated on October 24, 2026 and E Piano Synth on October 22, 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.*