CyclePlay vs Fertility Forecaster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CyclePlay
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THIS APP REQUIRES A CyclePlay HARDWARE DISPLAY CyclePlay is your personal assistant while driving, giving you notifications about new messages and incoming calls, directly on your E-bike display, while not taking your attention of the road. CyclePlay also allows you to have routing directly on your bike display, with distance and next turn action. Clear view of remaining and traveled distance. No more taking your attention away from the road – Safety first!
Fertility Forecaster
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Most fertility apps track your cycle. This one answers a different question: what are your actual chances? Fertility Forecaster gives you a per-cycle probability of conceiving, a way to feel what that probability means, and an honest projection of how the next year or two might go. WHAT YOU GET A monthly number. Starting from your age, refined by anything else you choose to share — how long you've been trying, how regular your cycles are, your health, your partner. Every question is optional, and skipping one isn't a penalty. A way to feel it. A percentage is easy to misread. Spin a wheel weighted to your exact odds. Count out a hundred people like you. Or play a year forward, cycle by cycle, and watch how differently it can go. The longer view. Cumulative chances across the next 3, 6, 12 or 24 cycles, with the curve that shows how it flattens — and why that flattening isn't a verdict. HOW IT'S DIFFERENT It shows its working. A prominent "Method & medical sources" section explains the calculation and links to eight original studies and clinical guidelines. It won't flatter you. The estimate falls the longer you've been trying, because that is what the evidence says. The app explains why that's ordinary Bayesian updating rather than bad news, and why plenty of couples in the slow tail still conceive. It tells you where the research disagrees with the folklore. Low AMH, for instance, turns out to be a poor predictor of natural conception, and the app says so plainly instead of alarming you. Timing is handled properly. If you use ovulation tests and concentrate sex into the fertile window, that counts in your favour — not against you for a low monthly average. NO CYCLE TRACKING Deliberately. There are excellent apps for logging periods and this isn't one of them. Nothing to log daily, no notifications, no streaks to keep. PRIVATE BY DESIGN No account, no sign-in, no network calls. Your answers live in this app's own storage and disappear when you delete it. Fertility Forecaster gives population estimates, not a diagnosis or a prediction about you specifically. It cannot see anything a doctor would find. If you have been trying for a while, talk to one.
Screenshots
Verdict
The clearest difference is iOS requirement: CyclePlay at 15.6 against Fertility Forecaster's 17.0. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | CyclePlay | Fertility Forecaster |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 30 MB | 1 MB |
| Age rating | 4+ | 12+ |
| Developer | Promovec AS | Dayton Thorpe |
In-app purchases
CyclePlay
No in-app purchases
Fertility Forecaster
No in-app purchases









