I found about Phoneum during their initial bounty, the project was about mining with smartphones, and it was working until the veto from Google and Apple on the app made the dev team change everything about it, they were very fast to adapt and successfully started to create an ecosystem of games with which people can earn cryptocurrency playing and watching some ads.

I know it is not a real Dapp because it is not decentralized but they are developing an API system and before or after they will make it completely decentralized.

Phoneum ecosystem

Phoneum created in a short period of time many parts of their ecosystem: Phm Wallet, Crypto treasures, Cloud Earning PHM, Crypto Planet and then the mini-games as such as Cannon Blast, Treasure Stairs, Treasure Battle, Crypto Connect.

PHM wallet

A simple Ethereum full compliant wallet for android and soon for iOS

Crypto Treasures

This was the definitive first app to earn crypto with it, themed around pirates times' it has weekly missions that give you treasure chests, XP and gold with which you can earn PHM, buy treasure chests and find in them not only PHM but other crypto as such as BTC, ETH, TRON, EOS, XLM, LTC, XRP, DOGE and more. There are two minigames and it is connected to Treasure Battles, Treasure Stairs, and Cannon Blast through the quests section while you can access Crypto Planet and Treasure Battle with the main page buttons. There is a button that can get you ads to watch from gold rewards. The XP makes you earn more PHM in the Cloud Earning PHM of which you can control statistics simply tapping on the Phoneum counter.

Cloud Earning PHM

As the name suggests it is an app that as the Electron one, cloud mines PHM in periods of 7 days, you just have to claim and restart once a week. Log in with the same credentials used for Crypto Treasures.

Crypto Planet

The theme of this app is about space, it has a gem mining section, a crystal incubator, and a simple shooter game to warm your thumbs in the winter :) a connection to Crypto Connect and Crypto treasures and being on another server needs another registration, the concept is the same, instead of getting gold and then crypto you need crystals, there are quests and video ads to be watched.

There other minigames and standalone games that help to collect more gold like treasure stairs and cannon blast (their first standalone mini-game)

I think this is a good way to spread some crypto around, the team is very adaptive and fast, you cannot become rich with it but it's a start, there are minimum requirements for withdrawals, the support is answering to emails pretty fast, the most promising thing is the API they mention on the website, if they can get it right and connect it to their token PHM or create a real coin for it, the value could go up.