# Stringcalculator vs Precise Strobe Tuner

The clearest difference is price: Precise Strobe Tuner at Free against Stringcalculator's $2.99. Precise Strobe Tuner also leads on update cadence (weekly vs every 16 months) and iOS requirement (15.1 vs 17.6). Stringcalculator's advantage is in-app purchases (none vs 6) and review sentiment (100% vs 89%). On ads and device support there is nothing between them.

Precise Strobe Tuner is free to download; Stringcalculator costs $2.99 up front. Precise Strobe Tuner sells 6 in-app purchases, starting at $1.99 per month. Stringcalculator asks for nothing beyond the download.

Stringcalculator ships an update every 16 months, Precise Strobe Tuner weekly. The most recent releases landed on October 15, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Stringcalculator | Precise Strobe Tuner |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[4.8 (92 ratings)](https://appshunter.io/ios/app/precise-strobe-tunerstrobopro/id6455632707/reviews)** |
| Number of ratings | — | **92** |
| Positive reviews | **100.0% of reviews** | 88.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 57 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Martin Uhlig](https://appshunter.io/developer/1414861205) | [Applicaudia AB](https://appshunter.io/developer/1565543993) |

## 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


### Precise Strobe Tuner

[App page](https://appshunter.io/ios/app/precise-strobe-tunerstrobopro/id6455632707)

Achieve perfect pitch with real strobe tuning technology, offering unmatched accuracy for a variety of instruments. Its bright, easy-to-read display is ideal for dark performance venues, and it supports custom and alternative tunings.

**Highlights:** Genuine strobe tuning technology, Automatic pitch detection, Intelligent noise filter, Unmatched low-frequency accuracy, Bright, easy-to-read display, Multiple tunings supported, No ads

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StroboPro Universal Pro | $1.99 | per month |
| Unlock Premium Features | $1.99 | per month |
| StroboPro Universal Pro | $14.99 | per year |
| Annual Subscription | $14.99 | per year |
| StroboPro Pro (Lifetime) | $14.99 | one-time |
| Premium for lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Stringcalculator free?

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

### Is Precise Strobe Tuner free?

Precise Strobe Tuner is free to download, with in-app purchases available.

### Do Stringcalculator or Precise Strobe Tuner have ads?

Neither Stringcalculator nor Precise Strobe Tuner shows ads.

### Which is updated more often, Stringcalculator or Precise Strobe Tuner?

Stringcalculator ships an update every 16 months, and Precise Strobe Tuner weekly. Most recently, Stringcalculator was updated on October 15, 2026 and Precise Strobe Tuner on October 27, 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.*