# Viking Synth vs Filterjam

The clearest difference is price: Filterjam at Free against Viking Synth's $3.99. Filterjam also leads on rating (5.0 vs 4.7) and review sentiment (83% vs 71%). Viking Synth's advantage is update cadence (every 4 months vs every 22 months) and iOS requirement (12.0 vs 14.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

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

Filterjam holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 42 and 34 respectively. Written reviews point the same way: 71% of Viking Synth's written reviews are positive against 83% of Filterjam's.

Viking Synth ships an update every 4 months, Filterjam every 22 months. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Viking Synth | Filterjam |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.7 (42 ratings)](https://appshunter.io/ios/app/viking-synth/id1085274012/reviews) | **[5.0 (34 ratings)](https://appshunter.io/ios/app/filterjam/id1659941144/reviews)** |
| Number of ratings | **42** | 34 |
| Positive reviews | 71.2% of reviews | **83.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 22 months |
| Monetization | Paid | **Free** |
| Size | 11 MB | 25 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) |

## 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


### Filterjam

[App page](https://appshunter.io/ios/app/filterjam/id1659941144)

This app offers a multiband resonant filter for creating unique audio effects. It divides input signals into four bands, allowing for various sonic manipulations from subtle enhancements to extreme sound mangling.

**Highlights:** Multiband resonant filtering, 4-band signal division, Sum or multiply band modes, Versatile sound shaping, Ringmod-like effects

**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 Filterjam free?

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

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

Filterjam is rated higher. Viking Synth averages 4.7 out of 5 from 42 ratings, while Filterjam averages 5.0 from 34 ratings.

### Do Viking Synth or Filterjam have ads?

Neither Viking Synth nor Filterjam shows ads.

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

Viking Synth ships an update every 4 months, and Filterjam every 22 months. Most recently, Viking Synth was updated on October 12, 2026 and Filterjam on October 1, 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.*