Comparison

Fertility Window Planner vs SilverStrong

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

Head to head
About

Fertility Window Planner

This app helps you identify your fertile window for conception through private data logging and transparent prediction engines. It visualizes your cycle data, including basal body temperature and cervical mucus, to show your most fertile days and predicted ovulation. Core features are free, with an optional subscription for advanced insights and history.

Highlights
  • Log basal body temperature, cervical mucus, and test results
  • Visualize fertile window and predicted ovulation day
  • Transparent prediction engine with chart explanations
  • Private data storage with export and delete options
  • Optional subscription for full cycle history and insights
Features
Read full description

Fertility Window Planner is the calm, private way to find your fertile window while trying to conceive. No ads, no data selling, no AI chatbot — just your own signs, read by a transparent engine that shows its work. LOG YOUR SIGNS IN SECONDS Record basal body temperature (°F or °C), cervical mucus, ovulation-test results, flow, intercourse and symptoms — one tap per day, editable any time. SEE YOUR FERTILE WINDOW The Dawn Arc and a phase-tinted calendar show the six days you're most likely to conceive, your predicted ovulation day, and your next period — each with an honest confidence tier. UNDERSTAND THE 'WHY' A BBT chart draws your temperature curve with the computed coverline, the shaded fertile window and your mucus/OPK markers — so you can see exactly how each prediction was made. Nothing leaves your device to compute it. BUILT FOR PRIVACY Your data is yours: protected by per-account security, never sold, no third-party trackers. Export or delete everything any time. PRO (optional subscription) Unlock full cycle history, cross-cycle chart overlay, personal pattern insights and saved summaries. Core logging and your current fertile-window prediction are always free. - Monthly $6.99 or Annual $39.99, with a 7-day free trial - Payment is charged to your Apple ID at confirmation; auto-renews unless canceled at least 24 hours before the period ends; manage or cancel in Settings Fertility Window Planner is for general wellness and body literacy. It is not medical advice, a diagnosis, or a contraceptive method, and never labels days 'safe' or 'unsafe.' Talk to a healthcare provider about conceiving or any concern. Privacy Policy: https://preview.apppublishing.ai/legal/540/privacy Terms of Use (EULA): https://preview.apppublishing.ai/legal/540/terms

About

SilverStrong

This app offers low-impact home workouts designed for individuals over 50. It includes a five-minute assessment to gauge fitness levels and provides personalized exercise sessions that adapt based on user feedback and pain levels. Track progress against WHO targets for strength, balance, and movement.

Highlights
  • Five-minute fitness assessment
  • Personalized, adaptive workout sessions
  • Seated and supported exercise options
  • Progress tracking against WHO targets
  • Large font and spoken instructions
  • Optional subscription for advanced features
Features
Read full description

SilverStrong is built for people over 50 who want to move well at home — without a gym, without a class, and without guessing whether any of it is working. START WITH A NUMBER, NOT A GUESS The Check is a five-minute test you do at home: how many times you can stand from a chair in 30 seconds, and how long you can hold four balance positions. Your result is scored against the published figures for your age and sex, so you know where you actually stand. A SESSION BUILT FOR TODAY Every session is assembled to the length you choose, from movements you can actually do — seated, holding on, or free-standing — and it leaves out anything that loads a joint you have told it is sore. IT LISTENS, AND IT CHANGES Rate the effort and any pain at the end, answer one question the next morning, and the plan moves. Two clean sessions and it steps up. Pain, or soreness that is worse the next day, and it eases back. The reason is written on the screen in plain words every time. THE THREE WEEKLY TARGETS Moving minutes, strength days and balance days, tracked separately against the World Health Organization's weekly numbers for adults. Balance is the one almost nobody counts. BUILT FOR THE EYES AND HANDS THAT WILL USE IT Large type, high contrast, generous buttons, spoken instructions so you can look away from the phone, and a light and a dark theme. It works on iPhone and iPad. FREE, AND IT STAYS FREE The Check and its score, a complete session every single day, the whole movement library, the three weekly targets and every safety behaviour are free — permanently. SILVERSTRONG PLUS (optional subscription) - Unlimited re-Checks, your trend line, and a projected date you reach the published average for your age - Sessions that step up on their own, plus 20 and 30 minute lengths - Your stiffness compared across session days and rest days - A printable session sheet and a summary page you can hand your doctor - Your full history $6.99 a month or $39.99 a year, after a 7-day free trial. Payment is charged to your Apple Account at confirmation. It renews automatically at the same price unless you turn off auto-renew at least 24 hours before the end of the period, and you can manage or cancel it any time in your Apple Account settings. SilverStrong is a wellness tool, not medical advice. If something hurts, changes, or worries you, talk to your doctor. Privacy Policy: https://preview.apppublishing.ai/legal/739/privacy Terms of Use (EULA): https://preview.apppublishing.ai/legal/739/terms

Screenshots

Fertility Window Planner4 screens
SilverStrong4 screens

Verdict

The call

The clearest difference is review sentiment: Fertility Window Planner at 100% against SilverStrong's 50%. Fertility Window Planner also leads on rating (4.0 vs 3.7) and update cadence (every 9 days vs every 3 weeks). SilverStrong's advantage is ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model 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. Fertility Window Planner sells 3 in-app purchases, starting at $6.99 per month and SilverStrong sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Fertility Window Planner holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 100% of Fertility Window Planner's written reviews are positive against 50% of SilverStrong's.

UpkeepUpdate frequency

Fertility Window Planner ships an update every 9 days, SilverStrong every 3 weeks. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 6 level
Fertility Window Planner versus SilverStrong: the parameters behind the verdict, then further details
ParameterFertility Window PlannerSilverStrong
PriceFreeFree
Rating4.0 (1 ratings) — better3.7 (3 ratings)
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings13 — better
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.115.1
Further details — not scored
Size37 MB40 MB
Age rating4+4+
DeveloperASHOK KUMARTheodore Armstrong

Customer experience

Fertility Window Planner

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

SilverStrong

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

3 purchases

Fertility Window Planner

Subscriptions3
  • Fertility Planner Pro Monthly7 Days trial$6.991 Month
  • Fertility Planner Pro Annual7 Days trial$39.991 Year
  • Fertility Window Planner$39.991 Year
2 purchases

SilverStrong

Subscriptions2
  • SilverStrong Plus Monthly7 Days trial$6.991 Month
  • SilverStrong Plus Yearly7 Days trial$39.991 Year

Questions

Is Fertility Window Planner free?
Fertility Window Planner is free to download, with in-app purchases available.
Is SilverStrong free?
SilverStrong is free to download, with in-app purchases available.
Which has better reviews, Fertility Window Planner or SilverStrong?
Fertility Window Planner is rated higher. Fertility Window Planner averages 4.0 out of 5 from 1 ratings, while SilverStrong averages 3.7 from 3 ratings.
Do Fertility Window Planner or SilverStrong have ads?
Neither Fertility Window Planner nor SilverStrong shows ads.
Which is updated more often, Fertility Window Planner or SilverStrong?
Fertility Window Planner ships an update every 9 days, and SilverStrong every 3 weeks. Most recently, Fertility Window Planner was updated on October 13, 2026 and SilverStrong on October 2, 2026.

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