Evidence you can check
Product disclosures, testing and certifications are kept distinct from brand claims and parents' experiences. Sources are linked so you can look closer.
How Nestivo assesses baby products
WHY TRUST NESTIVO?
Hi, I'm Simone.
I'm a first-time mum, passionate about the environment and reducing exposure to potentially harmful chemicals in everyday products.
Why I started Nestivo
The more I learned, the more questions I had about what I was buying for my baby. Sifting through ingredient lists, certifications, marketing claims and conflicting advice took an enormous amount of time—and often left me more confused.
I started Nestivo to bring that information together, explain it clearly and make those decisions easier for other parents.
Your family's priorities
Low toxins, environmental impact, performance, price and availability can matter differently to every family. Your priorities guide the recommendation.
Clear about the limits
Missing information and practical trade-offs are shown. An unconfirmed ingredient is not assumed to be present, and a missing test is not proof of harm.
How we use AI
Human review, judgement and oversight are critical to Nestivo. With AI assistance, we synthesise real parents’ published reviews and feedback, certifications, testing where available, and manufacturer and retailer statements. We help you compare relevant certifications, look beyond marketing claims for supporting evidence, and highlight gaps we find. Nestivo is responsible for what it publishes and for making corrections.
How our assessments work
Nestivo brings together product information, testing, certifications and parent experiences to help you compare the trade-offs.
Our scores are assessments of the available evidence—not laboratory measurements, safety ratings or guarantees that a product will suit your baby.
Five things we compare
- Low toxins / materials
- Ingredients and materials, relevant chemical testing, and what certifications actually cover.
- Sustainability
- Material sourcing, plastic use, waste, reuse and realistic disposal options.
- Performance
- How well the product does its job, using relevant testing and parent experiences where available.
- Price / value
- Cost and practical value, including pack sizes or purchasing assumptions where relevant.
- Availability
- How easily families can buy the product in Australia.
Each area has its own criteria. Open a product’s score breakdown to see the recorded findings, criteria and sources behind its assessment.
What a score means
Criterion scores are out of 10. They are combined using the recorded criterion weights to produce a pillar score out of 100. Displayed scores are rounded to whole numbers.
An 80/100 low-tox score does not mean a product is “80% safe”. It reflects our assessment of its materials, disclosures and supporting evidence.
Check the explanation alongside the number: similar scores can come with different strengths, limitations and unanswered questions. Where an overall score is shown, it gives equal weight to the five pillars; it does not replace your personalised ranking.
How we assess performance
We look at how a product works in everyday use: its strengths, practical drawbacks and the evidence behind them. “Why this score?” gives a short explanation, a confidence level and the key sources. The detailed breakdown lets you explore individual findings.
Independent tests, product instructions and real parent experiences answer different questions. We use them together where useful, and keep the size, design or formula they describe clear. Parent ratings describe satisfaction, rather than directly measuring leaks, firmness or safety.
Sourcing transparency
We assess how clearly brands identify material origins, suppliers and relevant sourcing credentials. Limited provenance disclosure receives 3/10. Stronger, traceable information earns more. This measures transparency, rather than proving that a material has a lower environmental impact.
What confidence means
Confidence describes how well the available evidence supports our practical assessment. It is not a safety rating, a guarantee, or a measure of how good a product is.
- High: well-matched testing of the current design, supported by independent real-use evidence, with no major unanswered question about its relevance.
- Medium: useful testing or documented product information supports the assessment, but there are limits such as differences between sizes or versions, or limited long-term wear evidence.
- Low: important everyday-use evidence is sparse, old or difficult to match to the current product.
Mixed parent experiences can be a reliable finding. More reviews alone do not produce high confidence, and a low star average does not mean the evidence itself is weak. We explain the main reason for each product’s confidence level beside its score explanation.
Confidence is assessed separately from the product’s performance points. A missing review average does not automatically make a product low confidence or remove its available assessment. Safety, readiness and compatibility requirements still apply before recommendations are ranked.
More about the performance calculation
Where a separate published test and a usable parent average are available, the performance score combines 60% of the test rating with 40% of the parent star average multiplied by 20. The selected review source must report at least 50 reviews. That is an editorial rule, not a scientifically validated threshold; the relevant unique current-product review count may still be unconfirmed.
Without a usable review average, we can use the named test on its own. Where there is no separate test, we use the recorded practical criteria and normalise their weights, excluding the additional review-consistency bonus. We do not add parent stars again to criteria already informed by parent reports.
A parent-only assessment is a last resort when no useful test or practical criteria exist; it would carry low confidence. No current catalogue product needs this alternative. Missing inputs never become zero or an invented midpoint. With no defensible evidence, we keep “Not scored”.
We retain full calculations, sources and assumptions in the underlying evidence records. Individual tests apply to their named size and design. Unconfirmed changes, mixed-product ratings and store-wide ratings cannot establish the performance of a specific current product. Overall scores still require all five pillars.
Evidence is not all the same
- Testing and certifications: checking the exact product, substances or materials covered.
- Manufacturer information: useful disclosures and claims, with their limitations identified.
- Parent experiences: practical observations about fit, leaks, cleaning and everyday use.
A certification for one material does not automatically cover the whole product. Experiences with an older formula, another size or an overseas model may not describe the product you are buying.
When information is missing
We identify evidence gaps rather than assuming that an undisclosed substance is present or that a product is harmful.
Missing evidence can limit an assessment. Where a score cannot be supported, it is shown as “Not scored”. If a displayed pillar score does not yet have a reconciled criterion calculation, the full score breakdown identifies that limitation.
Clearer disclosure can strengthen an assessment, but limited disclosure alone does not prove greater harm.
How “Find my match” works
Your first-ranked priority comes first: eligible products are compared on that score before other preferences are used to break ties.
When that leading score is tied, Nestivo uses your full priority order to help choose between products. Your buying preferences also affect eligibility. If you are open to reusable nappies, they receive an additional preference boost in the tie-break calculation.
Where product age guidance is relevant, we check your child’s age before ranking products. Feeding matches start conservatively at 6 months and ask about readiness. Seated feeding products also require sitting unaided and a confirmed weight group within the recorded configuration limit. Products with unconfirmed age ranges remain browsable but are excluded from age-filtered matches. Chairs with unconfirmed weight limits are excluded from Find My Match. Manufacturer, product-family, distributor and retailer age sources are labelled separately so their scope is clear. An unresolved product stays visible as a listed option with a limit to check, rather than a verified match. Compare filters product age guidance only; it does not confirm readiness or weight fit. Age does not replace weight, fit, development or the manufacturer’s instructions.
For cots and cot mattresses, an optional existing-item filter compares the specified mattress length, width, shape/system and thickness limit in both directions. It uses nominal manufacturer dimensions and does not certify the fit or safe condition of an individual item. Unknown requirements are not assumed to match. If a cot owner selects I don’t know for maximum mattress thickness, the results are explicitly a length/width/shape shortlist with thickness still to check, not a confirmed thickness match. A dimension-matching size outside the recorded price/value assessment remains available to inspect, with that limit explained.
Age brackets use three-month ranges below one year and six-month ranges thereafter. Whole-bracket results must satisfy the product guidance across the whole range. An optional exact month can refine a result at a product-specific age boundary without changing that boundary.
Our score explanations discuss practical benefits, trade-offs and evidence limits. A high upfront price can still offer longer-term value if a product is kept in use; an adjustable design is not a guarantee of durability or lifetime savings. Editorial wording changes do not change the underlying criterion calculations or factual review dates.
This means your recommendation may differ from someone else’s—even when you are comparing the same products.
Keeping information current
The “Last reviewed” date, where shown, tells you when Nestivo last checked that product record. Brand changes do not appear automatically.
Prices, availability, ingredients and certifications can change between reviews. Follow the linked sources and check the current product or packaging before buying.
Spotted something outdated? Use the product’s correction option in the comparison tool to tell us what needs checking.