Comparison

Ovulation Partner vs Tallwise

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

Head to head
About

Ovulation Partner

Features
Read full description

Greenlight is the only fertility app built for him. Get discreet, perfectly-timed "green light" alerts during her fertile window—no awkward "it's time" conversations. She shares her window through a private, encrypted web link. You get gentle code-word notifications at T-2, T-1, and day-of. That's it. No charts, no thermometers, no pressure. BUILT FOR THE PARTNER, NOT THE TRACKER Most fertility apps are designed for the woman tracking her cycle. Greenlight is the quiet, respectful companion app for her partner—delivering perfectly-timed reminders without the pressure. HOW IT WORKS • She shares her fertile window through a secure link • You get gentle alerts 2 days before, 1 day before, and day-of • Custom code words keep notifications private ("Green light tonight") • Works across all your devices • Snooze and mute anytime—zero pressure WHO IT'S FOR • Couples trying to conceive (TTC) who want better timing without the awkward • Partners who keep missing the fertile window • Husbands who want to be supportive without feeling like they're being scheduled • Anyone who's tired of "is it today?" text threads PRIVACY-FIRST BY DESIGN • No personal data stored—ever • Anonymous 6-character pairing tokens • End-to-end encrypted data in transit and at rest • Automatic deletion after 90 days • No ads, no tracking, no data sold PRICING (7-Day Free Trial Included) • Monthly: $4.99/month • Quarterly: $12.99/3 months (Save 13%) • Annual: $29.99/year (Save 50% — Most Popular) Start your free trial today. Get perfectly-timed reminders. Keep the romance, lose the pressure. --- Subscription automatically renews unless cancelled at least 24 hours before the trial ends. Manage in iOS Settings. Cancel anytime. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Tallwise

Features
Read full description

How tall will you be? Tallwise gives you a real answer from growth science, not a guess. WHAT IT DOES • Predicts your adult height from your age, height, weight, your parents' heights and your stage of growth, using the Khamis-Roche method and CDC growth charts • Shows a range with an honest error band, and updates the prediction every time you log a new height • Places you on the growth chart: see your percentile and your projected path to adulthood • Growth Score from sleep, protein, movement and a daily 10-minute posture and mobility routine • Works for teenagers, and for parents logging a child TALLWISE PLUS Plus unlocks your exact predicted number, monthly re-predictions, the Growth Score and the daily routine, and the share card. Monthly, yearly or lifetime, cancel any time. Prices are shown in the app and may vary by country. PRIVATE BY DESIGN No account. No ads. No tracking. Everything stays on your phone. Tallwise is not medical advice. Predictions are statistical estimates with a stated error range; talk to a doctor about growth concerns. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://alagicamir.github.io/korklar-legal/tallwise/privacy.html

Screenshots

Ovulation Partner4 screens
Tallwise4 screens

Verdict

The call

The clearest difference is update cadence: Tallwise at every 4 days against Ovulation Partner's every 8 months. Ovulation Partner's advantage is iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases 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. Ovulation Partner sells 3 in-app purchases, starting at $4.99 per month and Tallwise sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Ovulation Partner ships an update every 8 months, Tallwise every 4 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 4 level
Ovulation Partner versus Tallwise: the parameters behind the verdict, then further details
ParameterOvulation PartnerTallwise
PriceFreeFree
Update frequencyEvery 8 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better18.0
Further details — not scored
Size23 MB8 MB
Age rating17+4+
DeveloperJuan BallonAmir Alagic

In-app purchases

3 purchases

Ovulation Partner

Subscriptions3
  • Greenlight Premium (Monthly)7 Days trial$4.991 Month
  • Greenlight Premium (3 Months)7 Days trial$12.993 Months
  • Annual Premium - Greenlight7 Days trial$29.991 Year
4 purchases

Tallwise

Subscriptions3
  • Plus Monthly$1.991 Month
  • Tallwise Plus$4.997 Days
  • Tallwise Plus3 Days trial$34.991 Year
One-time1
  • Plus Lifetime$19.99

Questions

Is Ovulation Partner free?
Ovulation Partner is free to download, with in-app purchases available.
Is Tallwise free?
Tallwise is free to download, with in-app purchases available.
Do Ovulation Partner or Tallwise have ads?
Neither Ovulation Partner nor Tallwise shows ads.
Which is updated more often, Ovulation Partner or Tallwise?
Ovulation Partner ships an update every 8 months, and Tallwise every 4 days. Most recently, Ovulation Partner was updated on October 28, 2026 and Tallwise on October 24, 2026.

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