You know those apps that pop up on your feed promising to reveal something fun and mysterious? Moonphase Filter: Love Test is exactly that. It's a lifestyle and entertainment app, mixed with a bit of photo filter magic, that claims to analyze your romantic compatibility based on the moon's phase at your birth. I downloaded it from the Play Store after seeing a friend's story post; it had over a million installs and was free, which made it an easy yes. Right after launching, I was hit with a gorgeous, dark interface full of stars and soft celestial animations, which honestly felt more polished than what I expected from a random love test app. You can jump right in without registering, though progress saves once you make an account, and there are a few optional in-app purchases for reading extra details on your matches.

Once you start using it, the onboarding is pretty quick. You put in your birthday and your partner's or crush's birthday, and the app calculates your "moonphase compatibility score" from 0 to 100. It then presents a circular chart showing your lunar phases side by side. The main action is pretty straightforward: you swipe through profiles, take compatibility tests, and see a short blurb about your emotional connection. What I found smooth was how it didn't clutter the screen with ads every five seconds, which is rare for this kind of app. The slightly confusing moment came when I tried to understand what each phase actually meant; there's a small info button, but a tooltip would have helped. A practical tip I picked up quickly was to try multiple birthdays just for fun, using fake dates on the same phone, since there is no strict validation. The UI is clean and the typography is readable, but the animations, while beautiful, can feel slow on older phones.

After spending a few hours testing it with friends, my personal verdict is that this app is perfect for casual entertainment or when you are hanging out in a group and need something light to laugh about. It is not for someone looking for serious astrological insight or deep relationship advice, since it relies heavily on a single factor: the moon's phase. Compared to apps like Co-Star or The Pattern, which give you full birth chart breakdowns, Moonphase Filter is extremely shallow. That said, its uniqueness comes from the visual filter component—you can actually overlay your moonphase on your photos, which looks stunning for social media. I can see why someone might keep it installed for the aesthetic filters alone, but I uninstalled it after two days because the compatibility readings felt repetitive. If you want a quick laugh and a pretty picture, go for it. If you want substance, look elsewhere.

• 🌙 Love Compatibility Score: Unlike apps like Co-Star that use full planetary charts, Moonphase Filter simplifies everything to your moon phase at birth. This makes it much faster to get a result. You just input two birthdays and immediately see a percentage score with a simple visual breakdown.
• 🌙 Photo Filter Integration: This is the standout feature. You can overlay your moonphase directly onto your selfies or couple photos. It uses the app's live camera or your gallery. Competing apps like The Pattern or AstroMatrix don't offer this at all, focusing only on text-based profiles.
• 🌙 No Registration Required: You can use most features without creating an account. Compared to Bumble's date mode or other social apps, this removes friction entirely. You can test your compatibility with anyone quickly without sharing personal data. The only downside is that scores aren't saved until you register.

• 🌙 Beautiful, immersive celestial design with smooth animations that make the app feel premium compared to dated rivals like LoveShack or old love calculators.
• 🌙 Extremely low barrier to entry with no mandatory registration, unlike Co-Star which forces a lengthy profile setup before any reading.
• 🌙 The photo filter feature is genuinely shareable on social media, giving it an edge over text-only apps like The Pattern or Astromatch.

• 🌙 Extremely shallow analysis compared to Co-Star or The Pattern. It only uses one astrological factor (moon phase), so results feel generic after the first few tries.
• 🌙 Animations can lag noticeably on mid-range or older phones, unlike the smooth performance of simpler apps like Love Meter or Cupid's Arrow.
• 🌙 No cross-referencing of other birth chart elements (sun sign, rising, Venus). Apps like AstroMatrix give much deeper breakdowns for free.