Comparison

HearMee vs D

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

Head to head
About

HearMee

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HearMee is an AI-powered emotional support app designed for adolescents and young adults who need a private, judgment-free space to process their feelings. Whether you're feeling overwhelmed, isolated, or unsure where to turn, HearMee offers anonymous, trauma-informed support—anytime, anywhere. Disclaimer: HearMee provides AI-generated supportive conversations and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read in this app. If you are in immediate danger or crisis, please contact your local emergency services or a trusted adult.

About

D

Features
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Know exactly how much vitamin D you're getting. Every day. D-Fine tracks your vitamin D from three sources — sunlight, food, and supplements — and tells you if it's enough, based on your skin, your location, and the time of day. THE PROBLEM Vitamin D deficiency is one of the most common in the world, even among people who spend time outdoors. The issue isn't laziness. It's that no one can tell how much sun they actually need. It depends on where you live, the time of day, your skin type, what you're wearing. You can't figure that out by feel. THREE SOURCES, ONE NUMBER Until now, there was no way to see all the sources of vitamin D together. D-Fine combines sunlight, food, and supplements into a single daily figure — your IU today versus your personalized daily target. If you're taking a supplement, you'll finally know whether it's the right dose for you, today, in this season. WHAT D-FINE DOES Sunlight — D-Fine reads your time in daylight from your iPhone and Apple Watch, then calculates the IU your skin actually synthesized, factoring in UV index, sun angle, cloud cover, your Fitzpatrick skin type, how much skin is exposed, and any SPF you logged. Food — Log meals containing vitamin D. D-Fine adds the IU to your daily total. Supplements — Track your daily supplement dose. D-Fine warns you before you cross safe thresholds. WHO IT'S FOR People who live far from the equator, work indoors, have darker skin, are over 50, or just want to stop guessing. PRIVACY All processing happens on your device. Your profile syncs through your private iCloud container — only you can read it. Anonymous usage data is strictly opt-in (default OFF), uses a non-persistent install ID, and contains no Apple identifiers or personal information. APPLE WATCH With an Apple Watch, D-Fine measures your Time in Daylight continuously and passively, the way Apple intended. Without it, the app falls back to estimating from outdoor workouts and UV conditions — still useful, just less precise. D-Fine is not a medical device. It's a science-based calculation tool to help you understand your vitamin D intake. For medical concerns, talk to your doctor. Privacy Policy: https://d-fine.app/privacy Support: https://d-fine.app/support

Screenshots

D4 screens

Verdict

The call

The clearest difference is device support: D at 2 against HearMee's —. On price, in-app purchases and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 6 level
HearMee versus D: the parameters behind the verdict, then further details
ParameterHearMeeD
PriceFreeFree
Rating5.0 (5 ratings) — better—
Number of ratings5 — better—
Ads—No
In-app purchasesNoNo
Devices—iPhone, Apple Watch — better
Requires iOS17.517.4 — better
Further details — not scored
Size16 MB13 MB
Age rating12+4+
DeveloperIshita SatheAirbag Studio Srl

In-app purchases

None

HearMee

No in-app purchases

None

D

No in-app purchases

Questions

Is HearMee free?
HearMee is free to download, with no in-app purchases.
Is D free?
D is free to download, with no in-app purchases.

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