Comparison

Opus Wellness vs ねむカフェ

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

Head to head
About

Opus Wellness

Features
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Every morning. 10 seconds. Three answers. What mode am I in. Why. What to do about it. Just your iPhone. No ring. No band. No wearable. — YOUR FACE AFTER LAST NIGHT Open your camera. 10 seconds. OPUS scans your skin across five layers — hydration, smoothness, tone evenness, radiance, and pore clarity — and scores each one. But the number isn't the point. The connection is. "After 5.5 hours of sleep, your skin score dropped 12 points." "Three days above 2L of water — your skin is responding." "HRV up, skin down. Something's off." Your face changes every morning. OPUS reads why. — AI THAT READS YOU — NOT A CATEGORY Every morning, one sentence no one else gets. Not a template. Not a horoscope. Your numbers, read by AI. "5.8 hours of sleep — your skin will show it by noon." "HRV dropped after Wednesday's alcohol. Recovery: 2 days." "Three weeks of data. You sleep worse on Sundays. Every single one." "3 coffees yesterday. Sleep took the hit. Skin followed." It doesn't motivate. It doesn't coach. It just says what it sees. — BETTER WITH APPLE WATCH OPUS works with just your iPhone. With Apple Watch, it gets sharper — HRV, sleep stages, SpO2, resting heart rate, all pulled automatically. More data in. Smarter insight out. No Watch? No problem. OPUS still reads your skin, sleep, activity, and stress. Own one? OPUS becomes the intelligence layer your Watch never had. — YOUR BASELINE Every body is different. OPUS learns your normal in 14 days, then flags what shifts. No population averages. No generic benchmarks. Just you. 22 metric pairs. Correlations only your data reveals. Sleep ↔ Skin. HRV ↔ Stress. Activity ↔ Recovery. A personal map of how your body actually connects. — DAILY MODE Restore — Your body needs recovery. Take it easy. Steady — A balanced day. Stay in your rhythm. Thrive — Your peak day. That thing you've been postponing? Today. — KNOW TOMORROW. TODAY. OPUS predicts your next-day score based on your patterns. Not a guess — a projection from your own data, updated every morning. Prepare before your body even gets there. — PRO — FIRST 14 DAYS FREE Your daily mode and score are always free. For those who want the full picture: · AI-powered daily insight that learns you better every day. · Full correlation map between skin, sleep, and stress. · 30-day body trend graph — watch yourself change. · Next-day prediction — know tomorrow before it arrives. — Privacy first. Health data stays on your iPhone. Skin photos are encrypted in transit and deleted after analysis — never stored, never shared. Available in 7 languages: English · Español · Deutsch · Français · Türkçe · 日本語 · 한국어 Tomorrow morning. 10 seconds. You'll know. OPUS is a wellness app. It does not provide medical diagnosis. Always consult a healthcare professional for health decisions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://opus-bio.github.io/opus-privacy-/

About

ねむカフェ

This app helps you manage caffeine intake by calculating how much remains in your body based on what you drink and your bedtime. It provides personalized recommendations to help you enjoy caffeinated beverages without compromising your sleep.

Highlights
  • Caffeine remaining calculation
  • Personalized half-life settings
  • 3-stage intake recommendations
  • Customizable beverage list
  • Consumption logging
  • Home screen widget
Features
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「この時間にコーヒー、今飲んで大丈夫?」 「エナジードリンクを飲むと、夜に影響しそう?」 そんな迷いを、就寝時刻から逆算して1タップで確認できます。 ねむカフェは、飲んだカフェイン量とあなたの就寝時刻をもとに、就寝時に体内に残るカフェイン量の目安を計算します。コーヒー、お茶、エナジードリンクなどを飲む前にチェックすることで、カフェインと上手に付き合うための判断をサポートします。 こんな方へ ・午後のコーヒーで夜の寝つきが気になる ・エナジードリンクを飲みたいけど、夜への影響が不安 ・カフェインを何時まで飲んでいいか分からない ・コーヒーやお茶を楽しみながら、睡眠にも配慮したい ・自分のカフェイン感受性を把握したい ねむカフェの特徴 「今飲んでもOK?」を1タップで確認 飲む前にアプリを開いて飲料を選ぶだけ。就寝時刻に体内に残るカフェイン量を推定し、3段階の目安で表示します。 ・問題なし:影響は少なめの見込み ・控えめに:量を調整したいタイミング ・今日はやめとく:就寝時刻に残りやすい見込み あと何mg飲めるかが分かる 「今日はあと180mgまで」など、残りの目安量を表示。数字だけでなく、コーヒー何杯分に近いかもイメージしやすく確認できます。 あなたに合わせた半減期設定(カフェインが体から抜けるまでの時間の個人差) カフェインの感じ方には個人差があります。ねむカフェでは、年齢、喫煙習慣、感受性などをもとに、カフェインが体から抜けるまでの時間(半減期)をあなた向けに設定できます。 主要なカフェイン飲料に対応 コーヒー、カフェラテ、紅茶、緑茶、エナジードリンク、栄養ドリンク、チョコレート系など、日常でよく飲む・食べるカフェイン食品を選べます。自分で飲料を追加することもできます。 記録とウィジェットで継続しやすい 飲んだカフェインを記録して、体内残量や履歴を確認できます。ホーム画面ウィジェットを使えば、アプリを開かなくても現在の目安をすばやく確認できます。 こんな場面で使えます ・コンビニでコーヒーを買う前に確認。就寝時刻への影響が少なそうなら、安心して楽しめます。 ・夕方エナジードリンクを飲むか迷ったときにチェック。控えめ表示なら、量を減らす判断に。 ・寝る前に今日のカフェイン残量を確認。明日以降の飲み方の参考にできます。 ご利用にあたって ねむカフェは医学的な診断、治療、睡眠改善を目的としたアプリではありません。表示される数値や判定は、カフェイン摂取量と半減期モデルにもとづく生活上の目安です。 カフェインの影響には個人差があります。妊娠中・授乳中の方、持病のある方、服薬中の方、体調に不安がある方は、医師などの専門家にご相談ください。 ご意見・ご要望 「この飲料を追加してほしい」「この機能があると便利」などのご意見は、フィードバックからお寄せください。

Screenshots

Opus Wellness4 screens
ねむカフェ4 screens

Verdict

The call

The clearest difference is in-app purchases: ねむカフェ at none against Opus Wellness's 2. ねむカフェ also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). Opus Wellness's advantage is ads (none vs shown) and update cadence (every 3 days vs every 6 weeks). On price 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. Opus Wellness sells 2 in-app purchases, starting at $9.99 per month. ねむカフェ asks for nothing beyond the download.

UpkeepUpdate frequency

Opus Wellness ships an update every 3 days, ねむカフェ every 6 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 3 level
Opus Wellness versus ねむカフェ: the parameters behind the verdict, then further details
ParameterOpus Wellnessねむカフェ
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 3 days — betterEvery 6 weeks
AdsNo — betterYes
In-app purchasesYesNo — better
Monetization—Ad-supported
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size9 MB36 MB
Age rating12+4+
DeveloperCagri DelilerKAZUKI SHIOTSUKI

In-app purchases

2 purchases

Opus Wellness

Subscriptions2
  • OPUS Pro — Monthly14 Days trial$9.991 Month
  • OPUS Pro Yearly14 Days trial$59.991 Year
None

ねむカフェ

No in-app purchases

Questions

Is Opus Wellness free?
Opus Wellness is free to download, with in-app purchases available.
Is ねむカフェ free?
ねむカフェ is free to download, with no in-app purchases.
Do Opus Wellness or ねむカフェ have ads?
ねむカフェ shows ads; Opus Wellness does not.
Which is updated more often, Opus Wellness or ねむカフェ?
Opus Wellness ships an update every 3 days, and ねむカフェ every 6 weeks. Most recently, Opus Wellness was updated on October 31, 2026 and ねむカフェ on November 5, 2026.

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