Young tech-savvy Labour activists have created a new app that is attracting hundreds of users to help push the party towards a stronger stance in support of a new referendum on Brexit.

The “Together against Brexit” app has already been downloaded by over 1,000 users and has more than 500 profiles on it since it was released on Friday.

Activists are using it to share information and views, but also to set up campaign activity and – critically – to organise themselves ahead of the crucial vote on Labour’s stance on a People’s Vote on Tuesday.

The Independent has launched its Final Say campaign for a People’s Vote on whatever the outcome of Brexit is, with more than 820,000 people having signed its petition so far.

One person involved in setting up the new app, told The Independent: “This is the go to place if you think the party needs to come out for a People’s Vote.

“It brings people together for what’s going to be the fight of our generation.”

It comes as those in the senior echelons of Labour seek to finesse the motion that will be voted on to give caveated support to a new referendum, with Unite boss Len McCluskey saying on Sunday that any vote must not include an option to stay in the EU.

Len McCluskey says second EU referendum should not inclide remain option

On Saturday night Mr Corbyn said he would not “walk away” if conference voted for a motion calling on the party to back a new referendum. But some backing a final say are concerned that the motion voted on will only offer vague approval for a new vote.

Then on Sunday, Unite general secretary Mr McCluskey said: “The referendum shouldn’t be on, ‘do you want to go back in the European Union’.

“The people have already decided on that. We very rarely have referendums in this country, the people have decided against my wishes and my union’s wishes, but they have decided.

“So if the parliamentarians, if spineless Tory MPs, lose the courage of their convictions and won’t vote against whatever deal comes back, then my union and Labour’s policy at the moment is to say, ‘well, if you are incapable of carrying out your functions in parliament, we should take the deal back to the people.”