The rules, explained simply.
Cubo Justo remembers who took out the bins, who was available and how often each person should take part. It uses that information to choose the next turn and show how the work is being shared.
Three rules that explain almost everything
Record only your own bin runs
If you take out the bins, the bin run counts for you. Each person records only what they do themselves.
The next turn follows what is still owed
The app gives the next turn to the person who most needs to take part to restore balance.
The balance does not reset each month
A new month, time away or a responsibility change does not erase what was already owed.
The rotation is not a fixed list
The app keeps an internal balance of what each person has done and what their share should have been. Whoever most needs to take part appears under ‘Up next’. If there is a tie, the normal rotation order applies.
If Ana takes the bins out, her bin run is recorded and Cubo Justo checks the balance again. With everyone equal, Bruno will usually be next.
A normal turn
The person whose turn it is takes out the bins and records the bin run. The app gives them credit and works out who needs to take part next.
A genuine, long absence
Use this for holidays, study or time away lasting weeks or months. Only the Owner or a Coordinator can set it. While away, that person receives no new obligations and cannot record bin runs. If they already owed a share, they will complete it after returning.
Someone goes out of turn
You can help even when it is not your turn, but the bin run counts for the person who made it. The assigned person's outstanding share is not reduced. The app then recalculates because someone else may be equally behind.
Ana still owes her share: Bruno's help does not count as if Ana had taken out the bins.
Two ways to view participation
First choose a period, then switch between ‘Balance’ and ‘Bin runs’. Both views use bin runs from that period, but answer different questions.
Has everyone done the share expected of them?
- +Has done a little more than their share.
- 0Is roughly in balance.
- −Has done a little less than their share.
The app remembers who was available and their responsibility percentage for every bin run. Having fewer bin runs does not always mean someone is behind.
How many bin runs did each person make?
This view counts only the number of bin runs. A longer bar means that person went out more often; it does not mean they were fairer or did a better job.
The percentage controls frequency, not who does a better job
Responsibility sets how often someone takes part. A lower number reduces their share and a higher one increases it. It is designed for regular differences in a household; the percentages do not have to add up to 100.
Over time, Ana will have roughly two turns for every one of Bruno's. The exact sequence does not have to be identical every time.
Can be adjusted from 25% to 200%.
Changes the future split, not earlier bin runs.
Does not measure who is better and is not a punishment.
The Owner and Coordinators can adjust it.
Pedro is home for only half the month
If this happens every month, he can have 50% responsibility. Over time, he will have roughly half as many turns as someone on 100%.
María runs a sewing workshop at home
If the household agrees that her work creates around 30% more bags, she can have 130% responsibility and take part a little more often.
Cubo Justo does not choose these percentages automatically: they are a household agreement. For an exceptional absence lasting weeks or months, set the person to ‘Away’ rather than changing their usual percentage.
Three roles with clear limits
Owner
Owns the home and manages people, coordinators, reviews, settings, the plan and billing.
Ownership is permanent and cannot be transferred.Coordinator
Organises people, invitations, absences and responsibilities. They can also keep or void bin runs under review.
Cannot manage payments, ownership or other coordinators.Member
Views turns, records their own bin runs, requests reviews and takes part in the noticeboard.
Cannot change how other people are organised.‘Review’ asks for a check; it does not accuse anyone
Any member can flag a bin run if they believe it did not happen, is duplicated or belongs to someone else.
The bin run is flagged so the household can check what happened.
They can keep it as valid or void it if the entry is incorrect.
If it is voided, its effect is removed without deleting later bin runs.
The noticeboard keeps important household updates
Use it for reminders, agreements or notes everyone should know. Each person can publish and edit their own notes.
- Pinned notes stay visible at the top.
- You can see who has viewed each update.
- Important changes are shown as pending.
Frequently asked questions
Can I mark myself away to avoid a turn?
No. Members do not control their own absences. Only the Owner or a Coordinator can manage them, and they are intended for long periods away. You cannot record bin runs while away, and when you return you pick up any share you already owed.
Do responsibility percentages have to add up to 100?
No. Each percentage is compared independently with the 100% reference.
Does changing responsibility alter the past?
No. Bin runs keep the responsibility settings that applied when they happened.
Do several waste types count as several bin runs?
No. One bin run can include several waste types, but it still counts as a single run.
Can I belong to more than one home?
No. Each account belongs to one home. A Member or Coordinator can leave; the Owner must keep or delete the home because ownership cannot be transferred.