# oSampler vs SynthMaster One for iPhone

The clearest difference is rating: SynthMaster One for iPhone at 4.8 against oSampler's 4.3. SynthMaster One for iPhone also leads on ads (none vs shown) and ratings volume (331 vs 71). oSampler's advantage is in-app purchases (none vs 10) and review sentiment (78% vs 66%). 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. oSampler asks for nothing beyond the download.

SynthMaster One for iPhone holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 71 and 331 respectively. Written reviews complicate that: 78% of oSampler's written reviews are positive against 66% of SynthMaster One for iPhone's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 14, 2026.

## The numbers

| Metric | oSampler | SynthMaster One for iPhone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (71 ratings)](https://appshunter.io/ios/app/osampler/id1446760908/reviews) | **[4.8 (331 ratings)](https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617/reviews)** |
| Number of ratings | 71 | **331** |
| Positive reviews | **78.4% of reviews** | 66.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 15 MB | 297 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NORICHIKA NAKATA](https://appshunter.io/developer/966061081) | [KV331 Audio](https://appshunter.io/developer/944155925) |

## What reviewers say

### oSampler

[App page](https://appshunter.io/ios/app/osampler/id1446760908)

Record and manipulate various sounds with a straightforward sampler. This application minimizes complex operations, making it accessible for quick audio editing and creative sound design. It prioritizes ease of use for a seamless sampling experience.

**Highlights:** Easy to use, Few complicated operations, Record sounds, Chop sounds, Audio manipulation

**In-app purchases:** none


### 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


## Frequently asked questions

### Is oSampler free?

oSampler is free to download, with no in-app purchases.

### Is SynthMaster One for iPhone free?

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

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

SynthMaster One for iPhone is rated higher. oSampler averages 4.3 out of 5 from 71 ratings, while SynthMaster One for iPhone averages 4.8 from 331 ratings.

### Do oSampler or SynthMaster One for iPhone have ads?

oSampler shows ads; SynthMaster One for iPhone does not.

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

oSampler ships an update every 2 months, and SynthMaster One for iPhone every 2 months. Most recently, oSampler was updated on October 14, 2026 and SynthMaster One for iPhone on October 14, 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.*