# Stringcalculator vs iPracticePro

The clearest difference is update cadence: iPracticePro at monthly against Stringcalculator's every 16 months. iPracticePro also leads on iOS requirement (15.6 vs 17.6). Stringcalculator's advantage is price ($2.99 vs $5.99) and review sentiment (100% vs 87%). On ads, in-app purchases and device support there is nothing between them.

Stringcalculator costs $2.99 and iPracticePro $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stringcalculator ships an update every 16 months, iPracticePro monthly. The most recent releases landed on September 30, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Stringcalculator | iPracticePro |
| --- | --- | --- |
| Price | **$2.99** | $5.99 |
| Rating | — | **[4.7 (239 ratings)](https://appshunter.io/ios/app/ipracticepro/id1491146332/reviews)** |
| Number of ratings | — | **239** |
| Positive reviews | **100.0% of reviews** | 86.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 170 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Martin Uhlig](https://appshunter.io/developer/1414861205) | [Steffen Weber](https://appshunter.io/developer/1491146331) |

## 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


### iPracticePro

[App page](https://appshunter.io/ios/app/ipracticepro/id1491146332)

This app offers a comprehensive suite of tools for musicians, including a chromatic tuner, extensive chord library, and customizable metronome. Practice scales, intervals, and complex chord progressions with adjustable tempos and time signatures. Explore fingering charts and reed adjustment information for wind instruments.

**Highlights:** Chromatic tuner with adjustable frequencies, Extensive chord library with over 45 types, Customizable metronome with adjustable BPM and time signatures, Chord progression practice with over 50 progressions, Pad for creating custom intervals and chords, Saxophone fingering charts and reed adjustment info

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great practice tool
- 💡 Fantastic ear training
- 💡 Useful for improvisation
- 👍 Easy to use
- 👍 Versatile for various instruments

**What reviewers complain about**

- 🐛 Does not run in the background
- 🐛 Limited sound quality
- 🐛 Cannot limit roots and progressions simultaneously
- 🐛 Basic sound quality
- 🐛 No metronome in drone section

**Reported bugs**

- App closes on its own after about 30 seconds
- Cannot limit roots and progression at the same time

**Requested features**

- Display notes of a chord when improvising
- Ability to create own chord progressions
- Random tempo oscillation with tweakable parameters
- Add sax voices
- Cover more than an octave


## Frequently asked questions

### Is Stringcalculator free?

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

### Is iPracticePro free?

iPracticePro costs $5.99, with no in-app purchases.

### Do Stringcalculator or iPracticePro have ads?

Neither Stringcalculator nor iPracticePro shows ads.

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

Stringcalculator ships an update every 16 months, and iPracticePro monthly. Most recently, Stringcalculator was updated on September 30, 2026 and iPracticePro on October 13, 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.*