# Tuner Wave vs UnitStack

The clearest difference is update cadence: UnitStack at every 2 days against Tuner Wave's every 19 months. Tuner Wave's advantage is iOS requirement (15.0 vs 18.6). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Tuner Wave against 5.0 for UnitStack. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Tuner Wave ships an update every 19 months, UnitStack every 2 days. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Tuner Wave | UnitStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/tuner-wave/id6462375879/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/unitstack/id6757423947/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 7 MB | 4 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Taehyuk Kwon](https://appshunter.io/developer/1702983946) | [Michael Yang](https://appshunter.io/developer/1866843188) |

## What reviewers say

### Tuner Wave

[App page](https://appshunter.io/ios/app/tuner-wave/id6462375879)

This utility precisely tunes guitar strings with advanced frequency resolution, achieving less than 0.2% offset. It offers superior accuracy compared to other iOS tuning apps.

**Highlights:** Precise guitar string tuning, Enhanced frequency resolution, Less than 0.2% offset accuracy, Superior to other iOS tuning apps

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

**In-app purchases:** none


### UnitStack

[App page](https://appshunter.io/ios/app/unitstack/id6757423947)

This utility app allows for simultaneous unit and currency conversions, saving your progress and custom units. Its minimalist design ensures a clear and efficient user experience for all your measurement needs.

**Highlights:** Stack multiple conversions, Persistent values, Custom units of measure, Minimalist interface, Custom color themes, Currency conversion

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tuner Wave free?

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

### Is UnitStack free?

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

### Which has better reviews, Tuner Wave or UnitStack?

Tuner Wave and UnitStack are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Tuner Wave or UnitStack have ads?

Neither Tuner Wave nor UnitStack shows ads.

### Which is updated more often, Tuner Wave or UnitStack?

Tuner Wave ships an update every 19 months, and UnitStack every 2 days. Most recently, Tuner Wave was updated on October 7, 2026 and UnitStack on October 4, 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.*