# CSS Calculator Pro vs Trainer Workouts

The clearest difference is in-app purchases: CSS Calculator Pro at none against Trainer Workouts's 3. CSS Calculator Pro also leads on iOS requirement (8.1 vs 26.2). Trainer Workouts's advantage is update cadence (daily vs every 2 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Trainer Workouts sells 3 in-app purchases, starting at $1.99 per month. CSS Calculator Pro asks for nothing beyond the download.

CSS Calculator Pro ships an update every 2 weeks, Trainer Workouts daily. Both last shipped on October 8, 2026.

## The numbers

| Metric | CSS Calculator Pro | Trainer Workouts |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | Free | — |
| Size | 2 MB | 18 MB |
| Requires iOS | **8.1** | 26.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Alexey Ovod](https://appshunter.io/developer/1545142178) | [Kevin Renella](https://appshunter.io/developer/1622795370) |

## What reviewers say

### CSS Calculator Pro

[App page](https://appshunter.io/ios/app/css-calculator-pro/id1082142936)

This application helps swimmers learn and calculate their critical swim speed and sprint distance index. It also allows users to predict their race times based on their performance metrics.

**Highlights:** Learn critical swim speed test, Calculate critical swim speed, Calculate sprint distance index, Predict race time

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

**In-app purchases:** none


### Trainer Workouts

[App page](https://appshunter.io/ios/app/trainer-workouts/id6759984622)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trainer Workouts Premium - Monhtly | $1.99 | per month |
| Trainer Workouts Premium - Yearly | $12.99 | per year |
| Trainer Workouts Premium - Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is CSS Calculator Pro free?

CSS Calculator Pro is free to download, with no in-app purchases.

### Is Trainer Workouts free?

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

### Do CSS Calculator Pro or Trainer Workouts have ads?

Neither CSS Calculator Pro nor Trainer Workouts shows ads.

### Which is updated more often, CSS Calculator Pro or Trainer Workouts?

CSS Calculator Pro ships an update every 2 weeks, and Trainer Workouts daily. Most recently, CSS Calculator Pro was updated on October 8, 2026 and Trainer Workouts on October 8, 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.*