ポジティブノート vs My Happy Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ポジティブノート
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Start each evening with 3 positive things — and watch your mindset transform. Positive Note is a journaling app built around the "Three Good Things" technique, a proven method from positive psychology that trains your brain to notice joy, reduce stress, and build a more optimistic outlook on life. HOW IT WORKS Every day, write 3 things that made you happy, something you accomplished, or a moment you're proud of. No matter how small — "all the traffic lights were green" counts. The simple act of noticing and recording these moments rewires your brain to seek out happiness in everyday life. FEATURES • Three Good Things — Write 3 positive entries each day using the proven positive psychology method • Calendar View — Review past entries and visualize your progress month by month • Streak Tracking — Stay motivated with your consecutive day streak and total entry count • Daily Reminders — Set a custom notification time to build a consistent evening habit • Photo Journal — Attach a photo to capture the moment and make memories last • 30 Color Themes — Personalize the app with handpicked gradient themes • Widget Support — See your current streak right on your iPhone home screen • Privacy First — All data is stored locally on your device; no account required THE SCIENCE BEHIND IT The "Three Good Things" technique was developed by positive psychology researcher Martin Seligman. Studies show that writing three positive things each day for just one week significantly increases happiness — and the effect can last for months. WHO IT'S FOR • Anyone who wants to build a more positive, grateful mindset • People looking for a simple, sustainable daily journaling habit • Those experiencing stress, anxiety, or negative thinking patterns • Anyone who wants to appreciate the small joys hidden in everyday life Start small. Write 3 things. Feel the difference. Download Positive Note and begin your journey to a happier, more grateful you.
My Happy Diary
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Find and gently record the “small happiness” in your everyday life In the middle of busy days, why not pause for just a moment? Happy Diary – My Happy Diary is a journaling app that helps you nurture a positive mindset by writing down one “happy moment” each day. Simply save a photo and a short note to easily capture moments that bring you a sense of calm and warmth. Key Features Simple and easy-to-use design Look back on past memories with a calendar view Record your “happiness of the day” with photos Weekly and monthly AI-powered analysis reports Because it only takes one minute a day, it’s easy to keep going. By writing things down, you’ll start to notice more moments where you think, “Today wasn’t so bad after all.” Little by little, a more positive mindset will return. Recommended for people who: Want to relieve daily stress Want to regain a positive outlook Are looking for a journal app that’s easy to maintain Want to keep memories together with photos Wishing you a happy day, today and every day By finding small moments of happiness, everyday life becomes a little kinder. With Happy Diary – My Happy Diary, take time to care for your own heart. Terms of Service: https://yuki-sato-95.github.io/happy-diary-doc/terms.html
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Verdict
The clearest difference is in-app purchases: ポジティブノート at none against My Happy Diary's 1. My Happy Diary's advantage is ads (none vs shown) and iOS requirement (15.1 vs 17.6). On price, update cadence 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. My Happy Diary sells 1 in-app purchase, starting at $1.99 per month. ポジティブノート asks for nothing beyond the download.
ポジティブノート ships an update fortnightly, My Happy Diary weekly. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.
| Parameter | ポジティブノート | My Happy Diary |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 19 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Masahiro Okura | yuki sato |
In-app purchases
ポジティブノート
No in-app purchases
My Happy Diary
- プレミアムプラン(1ヶ月)14 Days trial$1.991 Month








