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Everyday LifeGenerated accuracy model review: 2026-05-06
Subscription Cost accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- It standardizes the cost to an annual amount: * **Monthly:** Cost × 12 * **Weekly:** Cost × 52 * **Daily:** Cost × 365
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Subscription Cost: $14.99
- Frequency: Monthly
Expected outputs
- Cost Per Year: $179.88
- Cost Over 5 Years: $899.40
Known limitations
- This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
- Use the result as a planning estimate unless the calculator page states a stricter purpose.
Assumptions
- The billing amount stays the same across the full period.
- Taxes, fees, and price increases are not included unless they are part of the entered cost.
- Daily, weekly, and monthly frequencies are treated as fixed cycles.
Unit handling
- Subscription Cost accepts values in $.
- Frequency accepts one of the configured options.
- Cost Per Year is displayed as currency.
- Cost Over 5 Years is displayed as currency.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Currency outputs are displayed with standard US dollar formatting.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current subscription-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Subscription Cost.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.