Tuner Wave vs UnitStack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tuner Wave
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.
- Precise guitar string tuning
- Enhanced frequency resolution
- Less than 0.2% offset accuracy
- Superior to other iOS tuning apps
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Tuner Wave is a tool to be used to tune guitar strings. The accuracy of Tuner Wave beats other tuning applications running in iOS device using unique sample method to enhance the resolution of frequency. You can achieve less than 0.2% of offset of target frequency.
UnitStack
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.
- Stack multiple conversions
- Persistent values
- Custom units of measure
- Minimalist interface
- Custom color themes
- Currency conversion
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UnitStack lets you stack multiple unit conversions at once—so you never have to switch units or reselect conversions again. Your conversions are always saved. Open the app and start typing. Add custom units too—like that old reliable sauce spoon. Built for speed and clarity • Stack multiple conversions at once • Persistent values — pick up where you left off • Minimal, distraction-free interface • Custom color themes, including your own • Support for custom units of measure Whether you’re comparing measurements, converting currencies, or working across systems, UnitStack keeps everything visible and friction-free. Currency exchange rates are provided by Frankfurter (ECB reference rates).
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Tuner Wave | UnitStack |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 19 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 7 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Taehyuk Kwon | Michael Yang |
Customer experience
Tuner Wave
UnitStack
In-app purchases
Tuner Wave
No in-app purchases
UnitStack
No in-app purchases
