CSS Calculator Pro vs Trainer Workouts
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CSS Calculator Pro
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.
- Learn critical swim speed test
- Calculate critical swim speed
- Calculate sprint distance index
- Predict race time
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With this simple app you will - Learn how to perform critical swim speed test - Calculate your critical swim speed and sprint distance index - Predict your race time
Trainer Workouts
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Trainer Workouts is a focused iOS app built for indoor cycling sessions with Bluetooth sensors and smart trainers. It helps athletes train with structure, monitor key metrics live, and keep a clean workout history. **Live training dashboard** Real-time display of core metrics like power, cadence, heart rate, speed, distance, and elapsed time. **Bluetooth device management** Easy pairing and reconnection for heart rate monitors, cadence sensors, and home trainers. **Structured workouts** Built-in and custom Zwift `.zwo` workouts with visual timeline and target guidance. **Workout creation & import/export** Create workouts directly in the app, import `.zwo` files from Files, and export workouts when needed. **Session control** Start, pause, resume, and stop sessions with optional automation at workout end. **Workout guidance cues** Optional countdown alerts before interval changes, with sound/vibration support. **History & performance tracking** Full session history with summary metrics and detailed post-workout view. **Strava integration** Connect your Strava account and sync sessions with clear sync status tracking. **Athlete settings** Configure FTP, weight, and training-related behavior from a dedicated settings area. **Subscriptions** Monthly, yearly, and lifetime plans unlock unlimited sessions. Privacy Policy: https://drusy.github.io/trainer-workouts/privacy/ Terms of Use (Apple EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
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. 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.
| Parameter | CSS Calculator Pro | Trainer Workouts |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| Update frequency | Every 2 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 8.1 — better | 26.2 |
| Further details — not scored | ||
| Size | 2 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexey Ovod | Kevin Renella |
In-app purchases
CSS Calculator Pro
No in-app purchases
Trainer Workouts
- Trainer Workouts Premium - Monhtly$1.991 Month
- Trainer Workouts Premium - Yearly$12.991 Year
- Trainer Workouts Premium - Lifetime$24.99
Questions
Is CSS Calculator Pro free?
Is Trainer Workouts free?
Do CSS Calculator Pro or Trainer Workouts have ads?
Which is updated more often, CSS Calculator Pro or Trainer Workouts?
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