Comparison

Bio vs STAR/CHILD

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

STAR/CHILD

This app provides personalized astrological insights for parents, offering detailed relationship breakdowns and birth chart analyses for your entire family. It delivers daily horoscopes, audio readings, and weekly previews to help you understand your children's needs and enhance your parenting style.

Highlights
  • Family relationship breakdowns
  • Full birth charts and analysis
  • Daily horoscopes for parents and kids
  • Daily and weekly audio astrology readings
  • Whole Sky horoscope tracking
  • Downloadable parenting guides
Read full description

STAR/CHILD is the only astrology app just for parenting. It’s a complete parenting playbook based on your unique astrological chart and the charts of your whole family. Here’s what you get to work with: * Ultra-detailed relationship breakdowns that unpack what astrology says about your relationship with your kids and co-parents (and how they vibe with each other too) * Full birth charts for everyone in your family along with an extensive and highly specific analysis of what each of your placements has to say about your parenting style — and what your kids’ charts have to say about what exactly they’re likely to need most from you in order to thrive. * Daily horoscopes for you and each of your kids that take everything happening up in the sky and translate it into the essential things you need to know to make the most of your parenting life on any given day. * Daily audio readings to give you the essential rundown of the day: what's the vibe, what to expect, and how to make the most of it. * Weekly audio astrology previews to take you deep into the coming week's astrology and what it means for life with kids (and life in general). * Whole Sky horoscopes to show you where every planet, luminary, and node are in the sky on any given day: what sign they're in, what house they're in for you specifically, and what you need to know about each transit. * Downloadable guides that go in deep (we mean super deep) on what your Sun, Rising, and Moon signs say about your parenting superpowers, how you emotionally process things, what parts of life with kids might be challenging for you, and how to deal with all of it. Your family isn’t like anyone else’s. This is your super-detailed guidebook to life with your weird little crew, specifically. Just as they are, just as you are, explained by the astrology of the moment you were born, and every moment you’re living in now. Terms of Service: https://www.starchild.app/terms-of-service Privacy Policy: https://www.starchild.app/privacy-policy

Screenshots

Bio4 screens
STAR/CHILD4 screens

Verdict

The call

The clearest difference is review sentiment: Bio at 100% against STAR/CHILD's 40%. Bio also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). STAR/CHILD's advantage is rating (4.4 vs 4.0) and update cadence (monthly vs every 6 months). On price, in-app purchases, device support and iOS requirement 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 and STAR/CHILD sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

STAR/CHILD holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: STAR/CHILD has 401 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 40% of STAR/CHILD'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, STAR/CHILD monthly. The most recent releases landed on October 1, 2026 and October 12, 2026 respectively.

Scorecard6 real differences · 4 level
Bio versus STAR/CHILD: the parameters behind the verdict, then further details
ParameterBioSTAR/CHILD
PriceFreeFree
Rating4.0 (1 ratings)4.4 (401 ratings) — better
Positive reviews100.0% of reviews — better40.5% of reviews
Number of ratings1401 — better
Update frequencyEvery 6 monthsMonthly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.516.2 — better
Further details — not scored
Size6 MB95 MB
Age rating9+4+
DeveloperBiological Immunity Research InstituteSTAR/CHILD

Customer experience

Bio

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

STAR/CHILD

All ratings401 ratings
Positive81.0%
Neutral8.7%
Negative10.2%
Written reviews84 reviews
Positive40.5%
Neutral29.8%
Negative29.8%

Bugs and requests

Bio

Not enough reviews yet to summarise bugs or requests.

STAR/CHILD

Reported bugs

14 issues
  • App crashes on launch or when opening
  • Login screen loops infinitely
  • Users logged out repeatedly throughout the day
  • Account data wiped requiring re-input of information
  • New app update reverts to old interface
Show 9 more
  • Daily horoscopes not updating or loading late
  • Weekly readings showing previous week's content
  • Multiple family members showing identical horoscopes despite different signs
  • Co-parent horoscopes lagging days behind other users
  • Date adjustment feature not functioning properly
  • Email sign-up code not being received
  • Charts showing incorrect house placements
  • Inconsistent data across different profiles
  • App stuck on previous week's content

Requested features

13 requests
  • Multiple house system options (Placidus, Porphyry, Equal House)
  • Synastry and composite chart analysis
  • Relational analysis comparing parent-child charts
  • Ability to add grandchildren and extended family
  • Automatic daily reading uploads at consistent times
Show 8 more
  • Bulk weekly reading uploads
  • Subtitles for audio-only features
  • Email update functionality
  • Visible logout button in settings
  • Free trial period before paid subscription
  • Educational content for children
  • Aspect and placement details in charts
  • Relationship analysis between family members

In-app purchases

3 purchases

Bio

One-time3
  • 1 Credit$1.99
  • 5 Credits$3.99
  • 10 Credits$4.99
3 purchases

STAR/CHILD

Subscriptions3
  • Weekly$2.997 Days
  • Monthly$10.001 Month
  • Yearly$99.001 Year

Questions

Is Bio free?
Bio is free to download, with in-app purchases available.
Is STAR/CHILD free?
STAR/CHILD is free to download, with in-app purchases available.
Which has better reviews, Bio or STAR/CHILD?
STAR/CHILD is rated higher. Bio averages 4.0 out of 5 from 1 ratings, while STAR/CHILD averages 4.4 from 401 ratings.
Do Bio or STAR/CHILD have ads?
STAR/CHILD shows ads; Bio does not.
Which is updated more often, Bio or STAR/CHILD?
Bio ships an update every 6 months, and STAR/CHILD monthly. Most recently, Bio was updated on October 1, 2026 and STAR/CHILD on October 12, 2026.

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