About this site

Why it exists

Product pages use terms like "high pressure", "powerful spray" or "travel friendly", and often give very few numbers behind them. A product might list its capacity but not its spray time. Dimensions are not always measured the same way. Some useful specifications are buried in manuals, retailer listings or support pages, and sometimes two sources for the same product give different figures.

That makes comparison harder than it needs to be, especially when two products describe similar features in completely different words.

This site brings that information together and standardises it where standardising it makes sense. Original sources are recorded, missing information stays missing, and comparable figures use common units.

What counts as good depends on the use

Weight and packed size matter when you are travelling. Capacity and spray time matter more for daily use at home. Some people care about pressure, some want something simple with no battery to charge, and some want the smallest or cheapest thing that works.

The comparisons here are organised around those uses, so the differences are visible enough that people can choose on what matters to them.

Feedback from people who own these products helps decide what is worth comparing at all. Discussions in communities like r/bidets have raised practical questions about spray time, water capacity and use in public toilets that a product page rarely answers.

How products are compared

Every product follows the same data structure and the same published criteria.

• Sources are identified. Manufacturer specifications, independent measurements, calculations and estimates are labelled separately on every figure.
• Missing information stays missing. When no reliable figure can be found, the specification is recorded as unavailable. Missing data is handled according to the published scoring rules instead of being replaced with an assumption.
• Estimates do not decide results. Some characteristics can be reasonably inferred from how a product is built. Where more than a third of the products in a comparison can only be estimated on a criterion, that criterion is still shown but scores zero for everyone.
• Some comparisons cannot produce a ranking. When most of the information a use case depends on is unpublished, the criteria are shown and no order is given. Sorting products on the few criteria that happen to be available would say more about which manufacturers publish specifications than about which product suits the job.
• The methodology is public. The criteria, weightings, data states and reliability rules are all documented and can be checked.

The judgement is in choosing the criteria. Deciding that weight should count for more than capacity on a hiking page is a judgement, and it is one you are entitled to disagree with. That is why every criterion and weighting is shown alongside the comparison, so the rules can be inspected before the ranking is interpreted. Once those criteria are set, the ranking follows from the data.

Nobody decides a ranking directly, and that includes me. Manufacturers know their products better than I do and are usually the best source for technical specifications. People who use these things every day are the best source for what is worth comparing at all. My part is structuring the information and publishing the rules that apply to it. Anyone can send a missing source, point out an error, or challenge a criterion.

The full scoring system, data states and reliability tiers are on the methodology page.

Who makes this

My name is Karim Ali. I am an engineer and product designer, and I also designed PORTALO, one of the portable bidets included in the database.

Working on PORTALO is what led me to spend so much time researching this category. Over the years I collected specifications, manuals, retailer listings and product documentation for most of what was on sale. Turning that research into a structured database seemed useful beyond my own work.

PORTALO goes through the same published comparison system as every other product.

For manufacturers

Manufacturers are welcome to contribute. If you have published specifications that are missing here, send them over. Better source data makes the database better for everyone using it, and it makes your product easier to tell apart from the next one.

Corrections, new specifications and updated documentation all go to contact@portablebidetguide.com. Every change follows the same sourcing rules used throughout the database, whether or not it moves a product in a comparison. Specifications need a public source so that anyone reading the comparison can follow it and check the information for themselves. When two sources disagree, the disagreement is documented instead of being quietly resolved.

The full protocol for submissions and corrections is on the methodology page.

I also hope this encourages better product documentation over time. The easier specifications are to find and compare, the easier it becomes for a buyer to understand why one product may suit them better than another.

Commercial policy

Manufacturers cannot pay to change a score, a ranking or a comparison result. The site currently does not use affiliate links, sponsored placements or commissions on the products it lists.