Verdict up front: This app leans on longevity, telling users it has been running since 2018. A claimed history is easy to type and hard to verify, so we tried to verify it. We found no corporate record supporting the date, and no evidence of mining hardware behind the plans it sells.
Key facts — checked 25 September 2026
Package name: com.b99technologies.b99mining · Listed developer: B99 Technologies LTD · Installs: 5,000 plus · Store rating: 4.0 from 349 ratings · Claim made: Operating since 2018
Why the 2018 claim is the thing to test
Longevity is the most persuasive claim a deposit scheme can make, because it answers the question users are actually asking. If the operator has paid out for years, it must be real. That is why the claim is made, and it is why it deserves more scrutiny than the returns on offer.
It is also the cheapest claim to fabricate. A sentence in a store listing costs nothing. Checking it, by contrast, is straightforward. A company trading since 2018 leaves records. It has a registration with an incorporation date. It has filed accounts for several years. It has a domain with a registration history, press coverage, forum discussion, and customers who have been talking about it for years.
The listing states it plainly, telling users that B99 Cloud Miner has offered cloud Bitcoin mining to miners worldwide since 2018. We looked for the record behind that sentence and found no registration for B99 Technologies LTD with an incorporation date supporting it, no filed accounts, and no user discussion predating the app. For an operation in its eighth year of business, the absence of history is the finding.
No hashrate means no mining
The clearest test for any cloud mining offer is one question. What hashrate am I renting?
That question has an exact answer in a real contract, given in terahashes per second, alongside a maintenance fee covering electricity, and the name of the pool the hardware mines into. Those three facts let you check the offer against the current price of hashrate and work out whether it is plausible. They are the substance of the contract.
This app gestures at them without supplying them. Its listing promises a real-time dashboard to monitor hash power and offers what it calls detailed hashrate insights, so hashrate language is present. What is absent is a hashrate you are contractually renting, a named pool the hardware mines into, and a maintenance fee. Insights into a number the app itself generates are not the same as a contract. That inverts the relationship, because in mining the hashrate is what you buy and the return is what happens to it. Selling a return without a hashrate means the return does not come from mining, and the only other place it can come from is the deposits of later users.
⚠ Verified evidence — checked 25 September 2026
- No corporate record supporting the claimed 2018 start date
- No registration, address or filings traced for B99 Technologies LTD
- No hashrate figure, pool account or maintenance fee disclosed
- No user discussion of the service predating the app listing
- Returns advertised as fixed, which mining cannot guarantee
The withdrawal is where this pattern ends
A scheme paying returns out of deposits rather than revenue can only continue while deposits grow. It manages that by making withdrawal harder than deposit, and the methods are consistent across the category.
A minimum threshold sits above your balance, so you deposit more to reach it. A verification fee must be paid before processing. A network fee must be funded separately. An account upgrade unlocks a higher withdrawal tier. Referrals are required before a payout is released. Each of these buys the operator time and extracts more money from a user who has already lost some.
The rule is simple and worth holding onto. Money never has to move towards you to move away from you. If a payout requires a payment, the payout is not coming.
What to do now
If you have not paid, do not. There is no verifiable company, no verifiable hardware and no verifiable payout history here.
If you have paid, stop and refuse every fee framed as a withdrawal step. Screenshot your balance, your plan, the listing and your payment records now, while you still have access, because these apps are removed without notice and the evidence goes with them.
Then act on the payment method. Card and regulated payment service transactions can sometimes be reversed, but the windows are short, so contact the provider quickly. Crypto transfers are far harder, though the transaction hashes and receiving addresses should still be recorded. Be wary of anyone who contacts you afterwards offering to recover the funds, because that approach is usually a second scam directed at the same person.
Our view: The strongest claim this app makes, that it has run since 2018, is the one we could not corroborate anywhere. Combined with the absence of a hashrate figure or any identifiable operator, it should be treated as a deposit scheme rather than a mining service. Do not pay in.
Sources, checked 25 September 2026: Google Play listing for com.b99technologies.b99mining, company registry and domain history searches
Comments are closed