# Spinfire Pro 2 vs ServeLab

The clearest difference is in-app purchases: Spinfire Pro 2 at none against ServeLab's 3. Spinfire Pro 2 also leads on iOS requirement (13.0 vs 15.1). ServeLab's advantage is update cadence (weekly vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. ServeLab sells 3 in-app purchases, starting at $29.00 per month. Spinfire Pro 2 asks for nothing beyond the download.

Spinfire Pro 2 ships an update monthly, ServeLab weekly. The most recent releases landed on September 24, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Spinfire Pro 2 | ServeLab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (2 ratings)](https://appshunter.io/ios/app/servelab/id6746733042/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 54 MB | 71 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The trustee for The Fry Developments Trust](https://appshunter.io/developer/1750172875) | [Fuzzy Yellow Balls, LLC](https://appshunter.io/developer/1549661258) |

## What reviewers say

### Spinfire Pro 2

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ServeLab

[App page](https://appshunter.io/ios/app/servelab/id6746733042)

Film your tennis serve and receive instant AI-powered feedback on your technique. Identify mistakes and get actionable advice to improve your game. Your personal tennis coach is now available on your phone.

**Highlights:** AI-powered serve analysis, Mistake identification, Personalized improvement tips, Video recording and feedback, Pocket tennis coach

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bert Monthly | $29.00 | per month |
| Bert Yearly | $299.00 | per year |
| One lesson with Bert | $67.00 | one-time |


## Frequently asked questions

### Is Spinfire Pro 2 free?

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

### Is ServeLab free?

ServeLab is free to download, with in-app purchases available.

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

Neither Spinfire Pro 2 nor ServeLab shows ads.

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

Spinfire Pro 2 ships an update monthly, and ServeLab weekly. Most recently, Spinfire Pro 2 was updated on September 24, 2026 and ServeLab on September 29, 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.*