Frequently asked questions

Pellio is a logbook for pellet heating. You log your refills and your purchases; the app works out what you have left, how long it will last, what the season is costing you and when the next service is due. There is nothing to keep up but the logging itself.

About fifteen seconds, standing in front of the appliance. The refill screen holds a single field: the number of bags, adjustable half a bag at a time with large buttons and quick choices. Today’s date and the appliance are already filled in, and the app immediately shows the conversion into kilograms and what will be left afterwards.

No. You can log it later by changing the date. The home screen shows a strip of the last fourteen days with a marker on every day you loaded: that is what makes a missed entry visible. A refill that has already been logged, however, cannot be corrected today — no screen allows it, and only deleting the batch removes the refills attached to it.

Both are handled. The app suggests a default appliance and only shows the selector once there are two, so that logging stays light for people who have one.

Bag weight is recorded batch by batch, when you log the purchase. As long as every batch shares the same format, stock is shown in bags as well as weight; as soon as two formats coexist, only the weight is shown — adding a 15 kg bag to a 12.5 kg one does not convert back into a meaningful number of bags. When a refill exceeds what is left in the current batch, the app spreads it over two batches and tells you what goes where.

Never. Pellio measures nothing and connects to no appliance: it gives back what you have logged, and nothing else. There is no tank gauge, no automatic reading, no hardware to install.

From your average daily consumption, smoothed over seven days — days without a refill counting as zero — measured against the stock you have left. The result is stated as an estimate and in round terms: “about 4 weeks”, never a precise date. When the data is missing, the app would rather say nothing than show a zero.

Three, and only when there is something to say: low stock below seven days of autonomy, empty stock, and unusual consumption when the week runs at least 30% above your habit. That last one never appears before fourteen days of history — with no habit, there is no anomaly. When all is well, the home screen says nothing.

The amount paid, delivery included, divided by the total weight of the batch. The app then gives you your average price, your cheapest and dearest purchases, and points out the time of year when you bought best — but it stays quiet while the gap is too small to be worth acting on. A purchase whose price you do not know stays in the list and drops out of the statistics: it does not count as zero.

You record your interventions — annual service, glass, ash pan, burn pot, flue sweep, breakdown, repair, other — with their date, description and cost. You can set thresholds in kilograms (“clean the burn pot every 300 kg”): the app counts the kilos burned since the last intervention of that kind and tells you what is left before it falls due. It also tracks the warranty and the month of the annual service.

A season runs from 1 September to 31 August. The summary gives the pellets burned, the cost, the bags carried, the days with a refill, the heaviest day, and the first and last day of heating. It can be shared as text and exported as CSV or PDF. When a batch has no known price, the cost is reported as incomplete rather than quietly understated.

No. No account, no email address, no password. The app opens and is immediately useful, and it works entirely offline — which helps, since garages rarely have a signal.

On your device, in a local database. Your refills, purchases, prices and interventions do not leave it and are readable by nobody else. The only thing the app sends is anonymous usage statistics — which screens are opened, which technical errors occur — tied to a session rather than to a person.

Not yet, and it is worth knowing before you start: there is no restorable backup today. Losing the phone means losing the history. The CSV and PDF exports are made to be read in a spreadsheet or filed away, not to be imported back into the app.

Each on their own phone, but the data never meets: there is no sync between devices and no household sharing today. Every phone keeps its own logbook. Sharing is planned; it is not shipped.

To almost nothing: the only permission declared on Android is internet access, to send the anonymous statistics. No camera, no photos, no location, no contacts, no notifications.

Pellio is built for iOS and Android. It is not published on the stores yet: this page describes an app that works, not one you can already install.

Yes: no advertising, no subscription, no in-app purchase, no feature held back for a paid version. Nothing here is funded by your data — it never leaves your device.

The interface is in French and English. Weights are shown in kilograms or pounds, as you prefer, and the setting never rewrites your data. Amounts can be entered in euros, US dollars, pounds sterling, Swiss francs or Canadian dollars, and the statistics never mix two currencies.