CompareForgeMethodology & Data Sources
Comparison tools are only as trustworthy as the numbers behind them. This page documents exactly how CompareForge sources, verifies, computes and presents data — and the rules that keep our tools honest.
CompareForge is published and edited by Fahad, who reviews each source and signs off on every record and tool page published on this site.
We never invent data
Every specification shown on CompareForge comes from a manufacturer specification sheet or another named source. If we cannot verify a value, we do not publish one: missing fields appear as “unavailable” or “not documented”, never as an estimate dressed up as a fact.
This applies to specs, prices, ratings, benchmarks and review scores. We do not run lab tests, we do not fabricate benchmark numbers, and we do not assign star ratings to products.
Sources are attached to products
Every product page lists its sources with links and a verification date — the last time we checked the record against the manufacturer’s own page. When a source changes (a spec sheet is revised, a price moves), the verification date is what tells you how stale the record might be.
Comparison pages inherit the sources of both products compared, so you can trace any row in a side-by-side table back to where it came from.
Derived numbers show their formula
Our calculators (percentage difference, unit price, cost per use, total cost of ownership and friends) compute results from numbers you enter. Each tool publishes the exact formula it uses in its Methodology & Data section, so you can reproduce the result with a calculator yourself.
Rule-based tools — the Fit & Clearance Checker, the Compatibility Checker — state their thresholds and pass conditions in plain language before you use them.
Rankings are rule-based, not editorial
Where we rank products (use-case fit, alternatives similarity, finder scoring), the ranking comes from weights applied to documented specification differences. We explain the weights on the tool page. There is no hand-placed “winner”, no paid placement, and no sponsor can change a score.
If two products are close, the interface says so — a one-point gap in a fit score is noise, and pretending otherwise would be misleading.
Similarity and compatibility are derived, not rated
The Alternatives Finder measures attribute similarity across documented specification fields (price, size, battery, memory, and similar). It does not read reviews or assign quality scores — it tells you how similar two phones are on paper, and lists the exact fields where they differ.
The Compatibility Checker returns a verdict only when the relevant specification field exists. Missing data produces a “not documented” verdict rather than a guess.
Corrections are part of the process
Spec sheets contain errors and phones get revised quietly. If you spot a value that disagrees with the manufacturer’s page, use the report link on any product page — corrections are verified against the source before the record is updated.
How to read our data
- Sourced value — from a named source with a verification date.
- Unavailable / not documented — the source does not state it. We do not guess.
- Derived result — computed by a published formula from values you or we entered.
- Rule-based verdict — a documented pass condition, with the reason attached to the result.
Frequently Asked Questions
Where does CompareForge get its specification data?
Manufacturer specification pages, linked from each product page with a verification date. Where independent sources are used for cross-checking, they are listed alongside.
Do you test products yourselves?
No. We do not run lab tests or produce review scores. We structure and explain published specifications, and we are explicit about the difference.
What happens when a spec is missing?
It shows as unavailable or not documented. We never fill a gap with an estimate — an honest blank beats a confident guess.
Can a company pay to rank higher?
No. Rankings are produced by documented formulas applied to specification data. Sponsored placement does not exist anywhere in the ranking logic.
How current are the prices?
Prices carry the verification date of their source record. Prices change faster than almost anything else, so always confirm the current price on the retailer or manufacturer page before buying.
Found a value that disagrees with the manufacturer? Report it — we verify against the source before updating.