# Stringcalculator vs lfoch

The clearest difference is review sentiment: Stringcalculator at 100% against lfoch's 50%. Stringcalculator also leads on price ($2.99 vs $3.99). lfoch's advantage is iOS requirement (15.0 vs 17.6). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Stringcalculator costs $2.99 and lfoch $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stringcalculator ships an update every 16 months, lfoch every 20 months. The most recent releases landed on September 30, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Stringcalculator | lfoch |
| --- | --- | --- |
| Price | **$2.99** | $3.99 |
| Rating | — | **[4.4 (9 ratings)](https://appshunter.io/ios/app/lfoch/id1665885755/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 16 months** | Every 20 months |
| Monetization | Paid | Paid |
| Size | 1 MB | 8 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Martin Uhlig](https://appshunter.io/developer/1414861205) | [Alexey Nadzharov](https://appshunter.io/developer/729549192) |

## What reviewers say

### Stringcalculator

[App page](https://appshunter.io/ios/app/stringcalculator/id1426367350)

Calculate string properties for various instruments. Determine diameter, tension, and tone based on material, frequency, and scale length. Supports multiple units of measurement.

**Highlights:** Calculate string diameter, tension, and tone, Supports gut, nylgut, carbon, Tynex, and nylon strings, Set custom frequencies, Calculate in cm, mm, or inches, Adjustable scale length

**Features:** macOS Compatibility

**In-app purchases:** none


### lfoch

[App page](https://appshunter.io/ios/app/lfoch/id1665885755)

This app generates complex LFO waveforms with multiple outputs for creating "chase" effects. It offers two LFO generators with phase modulation, adjustable suboscillators, and waveform morphing. It can output MIDI control change values and sync to tempo.

**Highlights:** Dual LFO generators with phase/ring modulation, Suboscillator modulation with waveform morphing, Adjustable waveform rate, type, and range, Output 1-16 MIDI control change values, Tempo synchronization and AUv3 MIDI Effect support, Two modes: 'perform' and 'edit', Randomize parameter values

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

**In-app purchases:** none


## Frequently asked questions

### Is Stringcalculator free?

Stringcalculator costs $2.99, with no in-app purchases.

### Is lfoch free?

lfoch costs $3.99, with no in-app purchases.

### Do Stringcalculator or lfoch have ads?

Neither Stringcalculator nor lfoch shows ads.

### Which is updated more often, Stringcalculator or lfoch?

Stringcalculator ships an update every 16 months, and lfoch every 20 months. Most recently, Stringcalculator was updated on September 30, 2026 and lfoch on September 28, 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.*