It’s important to be upfront about what you’re looking for online. If you’re interested in something casual, free sites that require less information to sign up could work perfectly. It’s probably not worth paying for a membership if you’re not looking for anything long term and are willing to risk going on a couple of potentially bad dates. If marriage is what you’re after, then you might have better luck on paid sites that pair you with people who have the same priorities.
As this is 2019, all of these services, even the decades-old Match, offer both iPhone apps and Android Apps, but still have desktop counterparts for when you're at work and want to take a break from your spreadsheet to set up a weekend tryst. (Bumble is the one exception here.) Just be aware that the functionality can vary substantially between the app and desktop interfaces. For example, there's no swiping on Tinder's browser version.
You can usually expect to need to pay some money to get all the perks and benefits of a dating site, and SingleParentMeet follows this model. Creating a profile with pictures, viewing and searching for matches, and “flirting” or liking photos is all part of the free experience. If you upgrade to a Premium Membership, you’ll unlock the usual bevy of dating site features. This includes the full gauntlet of communication features (messages, chat, flirting, etc.), a site economy featuring “tokens” and gifts, and a slew of proprietary dating tools including PromoteMe, ConnectMe, and MatchMe. The free experience gives you a taste of what you can get, but paying offers the full functionality you need to really make a match.