# SynthMaster One for iPhone vs BLEASS Monolit

The clearest difference is update cadence: SynthMaster One for iPhone at every 2 months against BLEASS Monolit's every 12 months. SynthMaster One for iPhone also leads on ratings volume (331 vs 82) and iOS requirement (10.0 vs 12.0). BLEASS Monolit's advantage is review sentiment (83% vs 66%). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. SynthMaster One for iPhone sells 10 one-off in-app purchases and BLEASS Monolit sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for SynthMaster One for iPhone against 4.7 for BLEASS Monolit. Both are backed by a comparable volume of ratings — 331 and 82 respectively. Written reviews are what separate them: 66% of SynthMaster One for iPhone's written reviews are positive against 83% of BLEASS Monolit's.

SynthMaster One for iPhone ships an update every 2 months, BLEASS Monolit every 12 months. The most recent releases landed on September 19, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | SynthMaster One for iPhone | BLEASS Monolit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (331 ratings)](https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617/reviews)** | [4.7 (82 ratings)](https://appshunter.io/ios/app/bleass-monolit/id1589410030/reviews) |
| Number of ratings | **331** | 82 |
| Positive reviews | 66.0% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 297 MB | 35 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) | [BLEASS](https://appshunter.io/developer/1220444177) |

## 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


### BLEASS Monolit

[App page](https://appshunter.io/ios/app/bleass-monolit/id1589410030)

This app offers a powerful yet intuitive mono-synthesizer for creating a wide range of sounds, from deep basses to sparkling arpeggios. It features a user-friendly interface with tactile controls and a randomizer for sonic inspiration, along with factory presets and purchasable sound packs.

**Highlights:** Intuitive mono-synthesizer, Analogue sound engine, User-friendly interface, Random sound generator, Factory presets, Additional sound packs

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abyssal Preset Pack | $3.99 | one-time |
| Leads Preset Pack | $3.99 | one-time |
| Basses Preset Pack | $3.99 | one-time |


## Frequently asked questions

### Is SynthMaster One for iPhone free?

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

### Is BLEASS Monolit free?

BLEASS Monolit is free to download, with in-app purchases available.

### Which has better reviews, SynthMaster One for iPhone or BLEASS Monolit?

SynthMaster One for iPhone is rated higher. SynthMaster One for iPhone averages 4.8 out of 5 from 331 ratings, while BLEASS Monolit averages 4.7 from 82 ratings.

### Do SynthMaster One for iPhone or BLEASS Monolit have ads?

Neither SynthMaster One for iPhone nor BLEASS Monolit shows ads.

### Which is updated more often, SynthMaster One for iPhone or BLEASS Monolit?

SynthMaster One for iPhone ships an update every 2 months, and BLEASS Monolit every 12 months. Most recently, SynthMaster One for iPhone was updated on September 19, 2026 and BLEASS Monolit 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.*