Comparison

Conception Calendar vs Olla Period App

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

Head to head
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

About

Olla Period App

Features
Read full description

Olla is a private period and symptom tracker that lets you track your health in your own words. Instead of filling in endless forms, simply tell Olla what happened. Log your period, spotting, hot flashes, cramps, headaches, mood, sleep, energy, HRT, medication, pain, or anything else you want to remember. Olla turns what you log into a personal health journal you can explore over time. See when symptoms happened, how often they occurred, and how they changed across days, months, periods, and cycles. Compare anything you track to look for patterns in your own data. Ask Olla questions about your history, such as: - When did I last have a headache? - How often have I logged hot flashes? - Did I have more hot flashes before or after changing my HRT? - How does my sleep compare with my period days? - What symptoms have I logged most this month? Olla is especially useful when your cycle isn't predictable. It doesn't require your body to follow a 28-day cycle, making it useful for irregular periods and perimenopause tracking. Set reminders for anything you want to remember, then check them off in your journal. PRIVATE BY DESIGN Your health data stays on your iPhone. No account. No cloud database. No advertising trackers. Your period and symptom history is yours. Under strict GDPR rules! WITH OLLA YOU CAN • Track periods and spotting • Track symptoms in your own words • Keep a daily health and symptom journal • Track perimenopause symptoms • Log HRT and medications • Track sleep, mood, pain and energy • Compare symptoms and other things you track • See symptom patterns over time • Ask questions about your logged history • Set custom reminders • Review your cycle and period history No rigid symptom checklist. No assumption that every cycle is the same. Just tell Olla what happened and build a useful record of your own body over time. Privacy https://app.notion.com/p/ninakolari/Privacy-Policy-Olla-3dae68c52640804a9d23ec3086fe0ded Terms https://app.notion.com/p/ninakolari/Terms-Conditions-Olla-3dae68c5264080029251e10982f09822

Screenshots

Conception Calendar4 screens
Olla Period App4 screens

Verdict

The call

The clearest difference is in-app purchases: Conception Calendar at none against Olla Period App's 2. Conception Calendar also leads on iOS requirement (17.0 vs 26.5). On price, ads and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Olla Period App sells 2 in-app purchases, starting at $2.99 per 7 days. Conception Calendar asks for nothing beyond the download.

Scorecard2 real differences Ā· 4 level
Conception Calendar versus Olla Period App: the parameters behind the verdict, then further details
ParameterConception CalendarOlla Period App
PriceFreeFree
Update frequency—Every 3 days
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhoneiPhone
Requires iOS17.0 — better26.5
Further details — not scored
Size1 MB16 MB
Age rating17+17+
DeveloperKerim OzKatja Nina Kolari

In-app purchases

None

Conception Calendar

No in-app purchases

2 purchases

Olla Period App

Subscriptions2
  • Olla Weekly Subscription$2.997 Days
  • Olla Annual3 Days trial$19.991 Year

Questions

Is Conception Calendar free?
Conception Calendar is free to download, with no in-app purchases.
Is Olla Period App free?
Olla Period App is free to download, with in-app purchases available.
Do Conception Calendar or Olla Period App have ads?
Neither Conception Calendar nor Olla Period App shows ads.

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