CSS Calculator Pro

CSS Calculator Pro

By Alexey Ovod

CSS Calculator Pro is a sports utility app for competitive swimmers and triathletes that calculates performance metrics and predicts race times.

The App DNA

What makes this app unique?

Athletes use the tool to derive training benchmarks from manual swim-time inputs, bypassing the complexity of broader fitness-tracking platforms.

For Competitive swimmers and triathletes tracking performance metrics for training and race preparation.

What does it look like?

Key features

Critical Swim Speed (CSS) Test Guidestandard

Step-by-step instructions for performing the standard swim speed assessment.

CSS and Sprint Index Calculatorstandard

Calculates athlete performance metrics based on user-inputted swim times.

Race Time Predictorstandard

Estimates future race completion times using calculated speed metrics.

How much does it cost?

freeFree

The app is distributed as a free utility with no visible in-app purchases or subscription tiers.

Velocity

Dormant developmentopaqueShow more...

CSS Calculator Pro has been inactive for 3,147 days, indicating a complete cessation of development. No new feature builds, bug fixes, or events have been released in over eight years. The project appears to be abandoned by its developer.

See all version history

Who built it?

Alexey Ovod

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User Sentiment

What do users think recently?

How are ratings & reviews evolving?

App Store
0.00 · 0

Not enough recent reviews to extract reliable themes yet.

Read the full review analysis

Competition

Competitive landscape for CSS Calculator Pro

How's the Sports market?

CSS Calculator Pro operates as a niche, free-to-use utility within the Sports category. The lack of updates for over 100 months signals a stagnant market position relative to active fitness-tracking competitors.

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The rivals identified

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The Analyst's Read

Key takeaways for CSS Calculator Pro

Where is it heading?

The market for sports utilities is shifting toward automated, wearable-integrated platforms that remove manual input friction. CSS Calculator Pro's stagnant development cycle leaves it exposed to obsolescence, as it cannot compete with the feature cadence of modern fitness-tracking rivals.

  • The 8-year update gap indicates a total lack of maintenance, which erodes trust for any athlete relying on performance-tracking tools.

The SWOT

Core Strengths
  • Specialized performance-metric calculation provides direct utility for triathletes.
  • Zero-cost distribution model removes financial barriers for race-time predictions.
Critical Frictions 2 weaknesses inside
Growth Levers
  • Wearable hardware integration could automate data entry and improve retention.
Market Threats 1 threat identified

Next best moves

1 Sunset

Sunset the app because the 8-year development gap indicates no viable path to market relevance → reduce brand drag

The counter-intuitive read

Users report: The app's lack of updates is its only remaining feature…

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Bottom line

CSS Calculator Pro is a legacy utility that has been superseded by automated fitness-tracking platforms. Sunset the app to avoid brand drag, as the 8-year development gap makes any attempt at feature parity with modern rivals non-viable.

Unlock 2 critical frictions, 1 market threat and the analyst’s take.

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FAQ

Is CSS Calculator Pro still updated?
No, the app has not received an update since January 2018.
Does CSS Calculator Pro sync with wearable devices?
No, the app requires manual input for all swim times and does not support automatic syncing with wearable fitness hardware.
Is there a cost to use CSS Calculator Pro?
The app is free to use and does not contain in-app purchases or subscription tiers.

Sources

  1. [1] App Store

Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by CSS Calculator Pro, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “CSS Calculator Pro Intelligence Report.” Updated Sep 12, 2026. https://marlvel.ai/apps/css-calculator-pro

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