Lunes Wallet - Lunes, Bitcoin, Litecoin, Buy BTC

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This app was first launched on 31st January 2018 and currently has more than 5000 downloads, a 4.2 stars rating from 169 users and the latest APK (version 2.1) was from 6th December 2018.

Our analysis was done on 28th December 2019 based on data found in their Playstore description and their website . In our GitLab this app is discussed in Issue #68.

We found these ways of contacting the developers:

Disclaimer

The following Analysis is not a full code review! We plan to make code reviews available in the future but even then it will never be a stamp of approval but rather a list of incidents and bad coding practice. We cannot find and tell you all the dark secrets the wallet providers might have.

Do your own research!

Try out searching for "lost bitcoins", "stole my money" or "scammers" together with the wallet's name, even if you think the wallet is generally trustworthy. For all the bigger wallets you will find accusations. Make sure you understand why they were made and if you are comfortable with the provider's reaction.

The Analysis

In the description we read:

Full Private Key Control - The wallet being decentralized means that Lunes does not have access to your cryptos, only you through the private key.

That sounds good.

Neither on Google Play nor on their website can we find anything about source code. That’s bad.

Our verdict: not verifiable.

Verdict Explained

Not verifiable: No Open Source Code found

This verdict means that we could not find any source to compile the app from. Internally the company might do everything right but as we can't verify it, there is nothing protecting the user from an exit-scam where the provider releases an app that leaks the keys to the servers.

The app cannot be independently verified. If the provider puts your funds at risk on purpose or by accident, you will probably not know about the issue before people start losing money. If the provider is more criminally inclined he might have collected all the backups of all the wallets, ready to be emptied at the press of a button. The app might have a formidable track record but out of distress or change in management turns out to be evil from some point on, with nobody outside ever knowing before it is too late.