# Viking Synth vs oSampler

The clearest difference is price: oSampler at Free against Viking Synth's $3.99. oSampler also leads on review sentiment (78% vs 69%). Viking Synth's advantage is ads (none vs shown) and rating (4.7 vs 4.3). On ratings volume, update cadence, in-app purchases and device support there is nothing between them.

oSampler is free to download; Viking Synth costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Viking Synth holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 42 and 71 respectively. Written reviews complicate that: 69% of Viking Synth's written reviews are positive against 78% of oSampler's, so the app with the better star average is not the one people write more warmly about.

Viking Synth ships an update every 4 months, oSampler every 2 months. The most recent releases landed on September 23, 2026 and July 7, 2026 respectively.

## The numbers

| Metric | Viking Synth | oSampler |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.7 (42 ratings)](https://appshunter.io/ios/app/viking-synth/id1085274012/reviews)** | [4.3 (71 ratings)](https://appshunter.io/ios/app/osampler/id1446760908/reviews) |
| Number of ratings | 42 | **71** |
| Positive reviews | 69.4% of reviews | **78.4% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Paid | **Ad-supported** |
| Size | 11 MB | 15 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) | [NORICHIKA NAKATA](https://appshunter.io/developer/966061081) |

## What reviewers say

### Viking Synth

[App page](https://appshunter.io/ios/app/viking-synth/id1085274012)

This app emulates a classic monophonic analog synthesizer with advanced DSP technology. It features three variable wave oscillators, dual ladder filters, an LFO, and two modulation busses for versatile sound design.  An intuitive interface and extensive preset library make it ideal for creating thick bass and rich lead sounds.

**Highlights:** Three continuously variable wave oscillators, Dual ladder filters (Lowpass/Highpass), Multi-wave LFO, Two modulation busses, Intuitive user interface with expandable controls, 228 presets including Bass, Lead, and Synthwave, State-of-the-art DSP for authentic sound

**In-app purchases:** none

**What reviewers like**

- 🎶 Great sound quality
- 💡 Versatile sound options
- 💰 Excellent value (free)
- 💻 Lightweight and efficient
- 🎹 Good for learning synthesis

**What reviewers complain about**

- ❓ Preset issues
- 🔌 Not a standalone app
- 🐛 Occasional crashes
- 💾 Settings not saving
- 🤷‍♂️ Difficult to find/use

**Reported bugs**

- Presets not showing up
- Presets disappear
- App not showing in AUv3 menu
- Settings not saving after iOS 14 update
- Crashes when opening presets browser

**Requested features**

- More subtle drive mode
- Categorized preset browser
- Polyphony option
- Dark mode
- More apps from developer


### 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


## Frequently asked questions

### Is Viking Synth free?

Viking Synth costs $3.99, with no in-app purchases.

### Is oSampler free?

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

### Which has better reviews, Viking Synth or oSampler?

Viking Synth is rated higher. Viking Synth averages 4.7 out of 5 from 42 ratings, while oSampler averages 4.3 from 71 ratings.

### Do Viking Synth or oSampler have ads?

oSampler shows ads; Viking Synth does not.

### Which is updated more often, Viking Synth or oSampler?

Viking Synth ships an update every 4 months, and oSampler every 2 months. Most recently, Viking Synth was updated on September 23, 2026 and oSampler on July 7, 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.*