The Claims That Do Not Survive Scrutiny
Every listing in this category advertises the same set of app-only advantages: faster rounds, higher payouts, exclusive tables, better odds for new installs, quicker withdrawals. None of them can be true of a client that does not decide outcomes and does not hold the money. Where an app genuinely pays differently from the web build, it pays less, because that is the edit worth making to a package you intend to redistribute.
The one honest app-only advantage — reconnecting cleanly after a signal drop — is never the one advertised, presumably because it is dull and specific rather than exciting.
If You Already Have Both
Use them against each other once. Open the same round type in the app and in the browser, note the payout on a winning call in each, and check that the round timers on offer match. Two minutes of comparison is worth more than any review, and it is the only test that detects the specific way this category takes extra money from people.
For what the install itself contains, read the apk and install notes. For the round both clients are displaying, start from the format breakdown.