# RacquetTune vs Spinfire Pro 2

The clearest difference is price: Spinfire Pro 2 at Free against RacquetTune's $2.99. Spinfire Pro 2 also leads on update cadence (monthly vs every 3 months). RacquetTune's advantage is chart position (#13 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Spinfire Pro 2 is free to download; RacquetTune costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RacquetTune ships an update every 3 months, Spinfire Pro 2 monthly. The most recent releases landed on October 20, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | RacquetTune | Spinfire Pro 2 |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.6 (474 ratings)](https://appshunter.io/ios/app/racquettune-string-tension/id365729342/reviews)** | — |
| Number of ratings | **474** | — |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Paid | — |
| Best chart rank | **#13** | — |
| Size | 11 MB | 54 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Sten Kaiser](https://appshunter.io/developer/309325742) | [The trustee for The Fry Developments Trust](https://appshunter.io/developer/1750172875) |

## What reviewers say

### RacquetTune

[App page](https://appshunter.io/ios/app/racquettune-string-tension/id365729342)

**Currently charting:** #13 Top Paid · Sports (US App Store)

This app uses sound to accurately measure racquet string tension and analyze racquet performance. It offers tools to customize racquets, simulate different configurations, and track stringing consistency for various racket sports.

**Highlights:** String tension measurement, Swingweight calculator, Stiffness calculator, Racquet configuration simulation, Tension history tracking, Export test data

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🔒 Consistent and precise measurements
- 📊 Useful for tracking tension loss over time
- 🔧 Helpful for customizing rackets
- 📋 Good for logging string usage and tension
- 🔍 Accurate enough for most stringing needs

**What reviewers complain about**

- 🐛 Inconsistent or inaccurate readings
- 🔍 Not precise enough for some users
- 🤔 Complicated setup/calibration process
- 🔇 Requires a quiet environment to work properly
- 🔌 Stops working after some time

**Reported bugs**

- App crashes when trying to delete rackets
- String factor database not working properly
- Inconsistent readings on the same racket
- Struggles with rackets with built-in dampers

**Requested features**

- Add more strings to the database
- Allow logging of playing hours
- Improve history/graphing features
- Support for hybrid string setups
- Add racket database for easier setup


### Spinfire Pro 2

[App page](https://appshunter.io/ios/app/spinfire-pro-2/id6503728031)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RacquetTune free?

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

### Is Spinfire Pro 2 free?

Spinfire Pro 2 is free to download, with no in-app purchases.

### Do RacquetTune or Spinfire Pro 2 have ads?

Neither RacquetTune nor Spinfire Pro 2 shows ads.

### Which is updated more often, RacquetTune or Spinfire Pro 2?

RacquetTune ships an update every 3 months, and Spinfire Pro 2 monthly. Most recently, RacquetTune was updated on October 20, 2026 and Spinfire Pro 2 on October 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*