This beauty is usable for many things. If your Magic Academy is a level 5, you can disenchant it for Spell Fragments. A lower-level Magic Academy might give you fewer Spell Fragments.
50% Portal Profit - 3360 Spell Fragments
25% Portal Profit - 1850 Spell Fragments
20% Portal Profit - 1510 Spell Fragments
15% Portal Profit - 1180 Spell Fragments
10% Portal Profit - 800 Spell Fragments
5% Portal Profit - 420 Spell Fragments
But this is not their primary use in the game.
They are meant to be used to replenish Settlement Goods in case you run out of them and cannot reproduce them as fast as you would need to. How many resources they will give you depends on their value and the size of your Portal Storage. A level 1 Portal has only a tiny Storage, and you will get less from a Portal Profit than when your Portal is at level 4. The Vortex of Storage also increases your Portal Storage, but you cannot get this Ancient Wonder until Chapter 15, The Elvenars.
Do you know what goods you can expect from your Portal Profits? If there are multiple goods, you will always get all of them, not only one. If you are short on only one good, you might exceed your Storage Capacity for the additional goods.
Chapter 6 - A Portal to the Past - Granite, Copper
Chapter 7 - Blossoms of Promise - Night Essence, Ambrosia
Chapter 8 - Mud and Mushrooms - Loot, Mushrooms of Wisdom
Chapter 9 - Natives of the Continent - Wood Ghosts, Wind Chimes, Treant Sprouts
Chapter 10 - Elvarian Sorcerers Society - Arcane Alchemists, Alchemy and Arcane Necromancers
Chapter 11 - Halflings - Tingle Bread, Savy Soup, and Jolly Jelly
Chapter 12 - Elementals - Elvenar Essence
Chapter 13 - Amuni - Grave Goods and Traps
Chapter 14 - Constructs - Humanium and Elvarium
Chapter 15 - The Elvenars - Human and Elven Collections and Manifests
Chapter 16 - Embassies - Statutes
Chapter 17 - Traders of Unur - Elvenarin Zero
Chapter 18 - Teamspirit - Visitors to the Park: Humans, Elvenars, and Elves
Chapter 19 - Revenge of the Exile - White and Black Magic
Chapter 20 - Power of Music - Bars
Chapter 21 - The Vallorian Legend - Prey
Portal Profits are always helpful, but in the higher chapters, they do not necessarily give you the final Settlement Goods needed for your Research, but only goods to make those final Settlement Goods. Or if they offer you the final Settlement Good, you might need other goods to upgrade your Settlement Buildings.
This time, there should be no difference between the Elvenar App and the Browser Version.