# Viking Synth vs MF

The clearest difference is price: Viking Synth at $3.99 against MF's $14.99. Viking Synth also leads on review sentiment (71% vs 50%) and ratings volume (41 vs 8). MF's advantage is update cadence (monthly vs every 4 months). On rating, ads, in-app purchases and monetization model there is nothing between them.

Viking Synth costs $3.99 and MF $14.99 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 4.5. That said, the two scores are not equally well evidenced: Viking Synth has 41 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 71% of Viking Synth's written reviews are positive against 50% of MF's.

Viking Synth ships an update every 4 months, MF monthly. The most recent releases landed on October 20, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Viking Synth | MF |
| --- | --- | --- |
| Price | **$3.99** | $14.99 |
| Rating | **[4.7 (41 ratings)](https://appshunter.io/ios/app/viking-synth/id1085274012/reviews)** | [4.5 (8 ratings)](https://appshunter.io/ios/app/mf-101s-lowpass-filter/id6449946747/reviews) |
| Number of ratings | **41** | 8 |
| Positive reviews | **71.2% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 11 MB | 47 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) | [Moog Music Inc.](https://appshunter.io/developer/396776421) |

## 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


### MF

[App page](https://appshunter.io/ios/app/mf-101s-lowpass-filter/id6449946747)

This app is a digital recreation of a classic analog lowpass filter effect pedal. It allows users to add dynamic motion and warm, vibrant tones to various audio sources like guitars, vocals, and synthesizers.

**Highlights:** Analog 4-pole lowpass filter emulation, Envelope follower for dynamic motion, Processes guitar, voice, and synths, AUv3 effects plugin, Warm and vibrant sound quality

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Viking Synth free?

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

### Is MF free?

MF costs $14.99, with no in-app purchases.

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

Viking Synth is rated higher. Viking Synth averages 4.7 out of 5 from 41 ratings, while MF averages 4.5 from 8 ratings.

### Do Viking Synth or MF have ads?

Neither Viking Synth nor MF shows ads.

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

Viking Synth ships an update every 4 months, and MF monthly. Most recently, Viking Synth was updated on October 20, 2026 and MF on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*