Comparison

CycleLog Period vs Conception Calendar

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

Head to head

CycleLog Period

Period tracking, kept private

Conception & fertility tracker

Free

💪 Health & Fitness

No ratingsView app →

About

CycleLog Period

Features

Read full description

CycleLog tracks period days with a private calendar — nothing leaves your phone. Lightweight. Private. Free.

About

Conception Calendar

Features

Read full description

Conception Calendar is a science-based, minimal, privacy-first fertility tracker for those trying to conceive (TTC). • Fertile window & peak-fertility estimates (Wilcox model) • Symptothermal tracking: basal body temperature (BBT) + cervical mucus for retrospective ovulation confirmation • Premium, clean monthly calendar; accessible via colour + icon + label • AI-powered TTC coach (Premium) — context-aware, educational answers to your questions • Your data stays ONLY on your device — no servers, no iCloud, never sold, no ads • Optional Apple Health integration • Fun section: cultural gender predictions (not scientific, for entertainment) Conception Calendar is not a medical device; results are estimates and cannot be used for contraception. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://dogum-takvimi.web.app/privacy-policy-en.html

Screenshots

CycleLog Period3 screens

Conception Calendar4 screens

Verdict

The call

CycleLog Period and Conception Calendar are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences

CycleLog Period versus Conception Calendar: the parameters behind the verdict, then further details
Parameter	CycleLog Period	Conception Calendar
Price	Free	Free
Ads	No	No
In-app purchases	No	No
Devices	iPhone	iPhone
Requires iOS	17.0	17.0
Further details — not scored
Size	1 MB	1 MB
Age rating	4+	17+
Developer	LEAN ASIA CO., LTD	Kerim Oz