Why Sources Matter
Nuanyue publishes factual claims about software: what it is, which platforms it supports, how it is priced, who develops it. Each claim is tied to a source and a date, so a reader — or an AI retrieval system — can tell the difference between something we confirmed and something a developer merely stated.
How Facts Are Recorded
Every entry is stored as a set of claims. Each claim has four parts:
- subject — the entity the claim is about, such as
software:zipic; - predicate — what is being asserted, such as
supportsPlatform; - value — the assertion itself, such as
macOS; - status — how confident we are, and which sources back it.
Claim Statuses
| Status | Meaning |
|---|---|
| Verified | Confirmed against a first-party source. |
| Developer-stated | Stated by the developer; not independently confirmed. |
| Editorially reviewed | A judgement made by Nuanyue’s editors. |
| Derived | Inferred from other verified facts. |
| Unverified | Not stated by any source we track. |
What We Do Not Do
- We do not invent prices, ratings, review counts or version numbers.
- We do not publish superlatives such as “best”, “#1” or “fastest” without evidence that supports them.
- We do not treat third-party coverage as the sole basis for a product fact.
- We do not let visible page content and structured data disagree.
Re-verification
Sources are re-checked when an entry is reviewed, and the date of that check is shown on the listing.
A listing that has not been re-checked shows no check date at all — only the date its content last changed. That is deliberate. An edit is not a check, and printing the date of one under the label of the other is a claim a reader has no way to audit. Entries are queued for re-verification by age, measured from the update date.
Source grades
Sources are graded A–E. Higher grades carry more weight, and a product fact is never supported by a grade E source alone.
- Grade AFirst-party store listing
- The vendor’s own listing on the Mac App Store. Version, price and platform come straight from Apple’s catalogue.
- Grade BOfficial product website
- A page published by the developer or vendor. Used for positioning, platform support and pricing where no store listing exists.
- Grade COfficial documentation
- Reference material published by the developer, used for capabilities and requirements.
- Grade DSource repository
- The project’s own public repository. Used for licence, release history and open-source status.
- Grade EThird-party reference
- Independent coverage. Only ever used as supporting context — never as the sole basis for a product fact.