Comparison

Rainbow data vs Sibyl Care

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

Head to head
About

Rainbow data

Features
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The fertility data tracker for data geeks. Rainbow Data will help you: - Track your cycle and predict ovulation if you are trying to conceive naturally - Track your Basal body temperature (BBT) and detect ovulation based on charting, ovulation tests or lab tests - Schedule drug and supplement reminders and track their usage - Record, review and analyse lab test results - Build a full picture of your fertility data - Enjoy a beautiful and minimal design!

About

Sibyl Care

Features
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Your guide through pregnancy loss. Sibyl is a private companion for miscarriage and pregnancy loss โ€” here whenever you need answers, reassurance, or just a place to make sense of it all. Losing a pregnancy can feel disorienting, isolating, and hard to put into words. Whether you're in the early days or further along, Sibyl offers gentle, ongoing support as feelings, questions, and decisions come up โ€” tailored to what you're experiencing right now. Sibyl has been built with the input of medical and mental health professionals specializing in pregnancy loss, so everything inside is clinically grounded, expertly reviewed, and designed with your real needs in mind. Inside Sibyl, you can: - Receive personalized support and information based on where you are in your experience - Read clear, clinically reviewed articles on what to expect โ€” physically and emotionally - Work through guided reflection exercises developed with mental health professionals to help you process what you're feeling - Talk with a supportive AI companion, available any time - Find support organized around your mind, body, and everyday life - Build a picture of your experience over time, so support feels continuous Sibyl is designed to help you feel less alone โ€” and more supported for whatever comes next. Terms of Use: https://www.sibyl.care/terms-of-use

Screenshots

Rainbow data4 screens
Sibyl Care4 screens

Verdict

The call

The clearest difference is in-app purchases: Rainbow data at none against Sibyl Care's 4. Sibyl Care's advantage is update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Sibyl Care sells 4 in-app purchases, starting at $9.99 per month. Rainbow data asks for nothing beyond the download.

UpkeepUpdate frequency

Rainbow data ships an update every 3 weeks, Sibyl Care weekly. The most recent releases landed on September 10, 2026 and September 22, 2026 respectively.

Scorecard2 real differences ยท 4 level
Rainbow data versus Sibyl Care: the parameters behind the verdict, then further details
ParameterRainbow dataSibyl Care
PriceFreeFree
Update frequencyEvery 3 weeksWeekly โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 โ€” better14.0
Further details โ€” not scored
Size29 MB21 MB
Age rating17+17+
DeveloperVarious MBSibyl Care B.V.

In-app purchases

None

Rainbow data

No in-app purchases

4 purchases

Sibyl Care

Subscriptions3
  • Sibyl Monthly$9.991 Month
  • Sibyl 3-Month$23.993 Months
  • Sibyl 6-Month$41.996 Months
One-time1
  • Sibyl Lifetime Access$99.99

Questions

Is Rainbow data free?
Rainbow data is free to download, with no in-app purchases.
Is Sibyl Care free?
Sibyl Care is free to download, with in-app purchases available.
Do Rainbow data or Sibyl Care have ads?
Neither Rainbow data nor Sibyl Care shows ads.
Which is updated more often, Rainbow data or Sibyl Care?
Rainbow data ships an update every 3 weeks, and Sibyl Care weekly. Most recently, Rainbow data was updated on September 10, 2026 and Sibyl Care on September 22, 2026.

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