Cohort Retention Decay Simulator
Cohort Retention Decay Simulator: Compounds retention decay: Month 1 = 100 * (1 - 0.10) = 90; Month 2 = 90 * (1 - 0.10) = 81.
About this cohort retention decay simulator
Cohort Retention Decay Simulator — browser-based utility.
How this tool works
Calculation and parameter relationship: retainedByMonth[m]=round(initialUsers×(1−monthlyChurnPercent/100)^m,2)
- Select “Raw JSON / Advanced” and paste the sample input.
- Click “Run locally”.
- Compare “Raw Output Data” with the example; revise inputs when an error is shown.
Worked example
Scenario: Use the following data to evaluate Cohort Retention Decay Simulator
Sample input:
Illustrative output:
Limits and verification
Parameter domains and units: initialUsers ∈ ℤ; initialUsers ≥ 0; monthlyChurnPercent ∈ [0,100]; months ∈ ℤ ∩ [1,120]; round(…,2). Results use binary64 floating-point numbers unless BigInt is stated. Result cards show up to 10 significant digits; raw output retains the serialized value. A null ratio means the model has no meaningful finite value for that ratio; it is not zero.
Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.
Browser processing boundary
Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.
Relevant references
These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.
- CZOA formula and input assumptions documented on this page; no single governing external standard
- ECMAScript 2026, §6.1.6.1 Number Type
Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology
How to use it
- Select “Raw JSON / Advanced” and paste the sample input.
- Click “Run locally”.
- Compare “Raw Output Data” with the example; revise inputs when an error is shown.
Frequently asked questions
Which calculation does Cohort Retention Decay Simulator perform?+
Calculation and parameter relationship: retainedByMonth[m]=round(initialUsers×(1−monthlyChurnPercent/100)^m,2)
What input can I paste into Cohort Retention Decay Simulator?+
Paste the following input exactly, preserving JSON field names where present: {"initialUsers":100,"monthlyChurnPercent":10,"months":3}
Which parameter limits and units apply to Cohort Retention Decay Simulator?+
Parameter domains and units: initialUsers ∈ ℤ; initialUsers ≥ 0; monthlyChurnPercent ∈ [0,100]; months ∈ ℤ ∩ [1,120]; round(…,2). Results use binary64 floating-point numbers unless BigInt is stated. Result cards show up to 10 significant digits; raw output retains the serialized value. A null ratio means the model has no meaningful finite value for that ratio; it is not zero.
What result does this Cohort Retention Decay Simulator example produce?+
The example produces these values in the raw output: { "initialUsers": 100, "monthlyChurnPercent": 10, "retainedByMonth": [ 100, 90, 81, 72.9 ] }