Comparison

Bio vs Compatibility Cards

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bio

Discover deeper connections by analyzing your birth date for physical, mental, and emotional compatibility with others. This tool helps you understand relationship dynamics and find more fulfilling partnerships.

Highlights
  • Birth date compatibility analysis
  • Physical compatibility assessment
  • Mental compatibility assessment
  • Emotional compatibility assessment
  • Relationship insight tool
Features
Read full description

You can now find the love of your life. No need to settle for less. If you have been getting involved with people who make you unhappy, a Bio-Compatibility Analysis® can help you to determine why. The data is based upon your birth date. You will be surprised how amazingly accurate it is. This full, paid version offers complete analyses of your physical, mental and emotional compatibility with others.

About

Compatibility Cards

Discover intimate matches based on birth dates using an ancient numerology system. This app provides insights into relationship compatibility, offering a unique perspective on connections.

Highlights
  • Discover intimate matches
  • Birth date-based analysis
  • Magi System numerology
  • Card associations for birth dates
  • Unlimited match lookups
  • Detailed compatibility insights
Features
Read full description

Compatibility Cards: - Helps individuals discover their intimate match with another person based on birth dates. - Compared to Astrology, the Magi System is considered very accurate. This is because Astrology groups all individuals together by month whereas the Magi System is specific to an individuals birth date. - The numerology Magi system was developed 25,000 years ago. It is based on the fact that individuals born on the same day, typically have similar traits and personalities. Although twins are exceptions. - Each birth date is associated to a specific card. The names of each card are the same as the cards in the playing cards deck. - For example, the commonly used 52 deck of cards for poker is developed from the Magi system. - With a one time purchase, you can look up an unlimited amount of matches. How to Use: - Fill in your birthday as well as their birthday and your planetary birth card match will populate. EXAMPLES of results are... - MOON: Closeness and compatibility - Venus: Love in the purest form - Saturn: A match of criticism and disappointments - This is by far the most accurate system. It is unsurpassed in pin pointed knowledge and truth. Some of it may shock you, but in your heart you will know it is true. - Please note, the match you receive is fixed and unchangeable. This is not random as you will receive the same match every time when combining the same birth dates.

Screenshots

Bio4 screens
Compatibility Cards4 screens

Verdict

The call

The clearest difference is rating: Compatibility Cards at 4.8 against Bio's 4.0. Compatibility Cards also leads on in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 6 months). Bio's advantage is review sentiment (100% vs 88%). On price, ads, monetization model and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Bio sells 3 one-off in-app purchases. Compatibility Cards asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Compatibility Cards holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Compatibility Cards has 14 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of Bio's written reviews are positive against 88% of Compatibility Cards's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Bio ships an update every 6 months, Compatibility Cards every 3 weeks. The most recent releases landed on October 17, 2026 and September 27, 2026 respectively.

Scorecard6 real differences · 4 level
Bio versus Compatibility Cards: the parameters behind the verdict, then further details
ParameterBioCompatibility Cards
PriceFreeFree
Rating4.0 (1 ratings)4.8 (14 ratings) — better
Positive reviews100.0% of reviews — better87.5% of reviews
Number of ratings114 — better
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.510.0 — better
Further details — not scored
Size6 MB14 MB
Age rating9+4+
DeveloperBiological Immunity Research InstituteHalf Moon Studio Inc.

Customer experience

Bio

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Compatibility Cards

All ratings14 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews8 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

In-app purchases

3 purchases

Bio

One-time3
  • 1 Credit$1.99
  • 5 Credits$3.99
  • 10 Credits$4.99
None

Compatibility Cards

No in-app purchases

Questions

Is Bio free?
Bio is free to download, with in-app purchases available.
Is Compatibility Cards free?
Compatibility Cards is free to download, with no in-app purchases.
Which has better reviews, Bio or Compatibility Cards?
Compatibility Cards is rated higher. Bio averages 4.0 out of 5 from 1 ratings, while Compatibility Cards averages 4.8 from 14 ratings.
Do Bio or Compatibility Cards have ads?
Neither Bio nor Compatibility Cards shows ads.
Which is updated more often, Bio or Compatibility Cards?
Bio ships an update every 6 months, and Compatibility Cards every 3 weeks. Most recently, Bio was updated on October 17, 2026 and Compatibility Cards on September 27, 2026.

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