# NFM vs StringVest

The clearest difference is update cadence: StringVest at every 2 months against NFM's every 12 months. StringVest also leads on price ($0.99 vs $4.99) and device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

NFM costs $4.99 and StringVest $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

NFM ships an update every 12 months, StringVest every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | NFM | StringVest |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Rating | **[4.9 (34 ratings)](https://appshunter.io/ios/app/nfm-auv3-fm-synth/id1247473972/reviews)** | — |
| Number of ratings | **34** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 3 MB | 15 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nikolozi Meladze](https://appshunter.io/developer/1612048764) | [Philip Vincent](https://appshunter.io/developer/1890469991) |

## What reviewers say

### NFM

[App page](https://appshunter.io/ios/app/nfm-auv3-fm-synth/id1247473972)

This intuitive FM synthesizer works as an Audio Unit Extension plug-in for music production apps. It features six stereo operators, customizable algorithms, and built-in effects. Manage presets and precisely enter parameter values with a numeric pad.

**Highlights:** Six stereo operators, Customizable FM algorithm, Adjustable envelopes, Built-in effects (distortion, delay, flanger), Monophonic, polyphonic, legato, glide voice modes, Preset management with import/export, Numeric pad for precise parameter entry

**Features:** macOS Compatibility

**In-app purchases:** none


### StringVest

[App page](https://appshunter.io/ios/app/stringvest/id6761650269)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NFM free?

NFM costs $4.99, with no in-app purchases.

### Is StringVest free?

StringVest costs $0.99, with no in-app purchases.

### Do NFM or StringVest have ads?

Neither NFM nor StringVest shows ads.

### Which is updated more often, NFM or StringVest?

NFM ships an update every 12 months, and StringVest every 2 months. Most recently, NFM was updated on October 24, 2026 and StringVest on October 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.*