Shared Diary vs Pairlog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shared Diary
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[Overview] This is a diary app that lets you share your days with people you care about. Here are some ways you can use it: * Jot down your thoughts and feelings as a personal diary * Share your daily life with close friends or your partner * Talk about your day with your child * Use it with your spouse to share little things—like gratitude, happy moments, or updates about the kids * Use it in a small team to keep track of daily work or share reports Once you get into the habit of writing a diary, you start noticing more things around you. It helps you become more aware of the little joys in everyday life, and it also strengthens your ability to express your thoughts in words. Being able to put your feelings and ideas into words boosts your communication skills, which can really help in your relationships—at school, work, or at home. If reading this made you think, "Maybe I’ll give diary writing a try," we’re happy to hear it. Even writing just 20 or 30 characters a day is totally fine. And honestly, you don’t even need to use this app—we just hope it encourages you to start. [Recommended for people who] * Want a simple, easy-to-use diary app * Want to build a daily writing habit * Feel shy about expressing feelings out loud * Want to do a shared/partner diary * Don’t want to exchange LINE but still want a casual way to communicate in text Term of service(EULA): https://originate-aster.co.jp/shared-diary/terms privacy policy: https://originate-aster.co.jp/privacy-policy/
Pairlog
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Pairlog is a logging app for couples and partners. The day you felt grateful. The evening you shared a meal. The promises you made together. Capture the small moments of everyday life and keep them as a shared record — just for the two of you. Sharing chores, how you communicate, syncing schedules, small acts of thoughtfulness. Pairlog helps you gently organize your life together, reducing the "I said it / I never heard that" mix-ups that can get in the way. We built Pairlog to be easy — not complicated settings or overly detailed tracking, but a quick log you can add the moment something comes to mind. Simple enough to keep up every day, natural enough to fit into your life together. What you can do: • Promise List — Keep track of things you've agreed on, so nothing gets forgotten. • Calendar — Look back and see what you did and when, together. • Gratitude Log — Record the moments you felt thankful for your partner, with a note to remember why. • Rewards — As you build up logs, you earn points toward rewards you choose together. The more you log, the more your shared time and memories take shape. Even on busy days, Pairlog helps you hold on to your feelings for each other — and the things that matter most to you both. A note from the developer: Pairlog isn't meant to score your relationship or turn it into a competition. It's a quiet place to keep your promises and gratitude, day by day. We care more about you using it at your own pace than using it perfectly.
Screenshots
Verdict
The clearest difference is in-app purchases: Pairlog at none against Shared Diary's 1. Pairlog also leads on ads (none vs shown). On price, update cadence, device support 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
Both are free to download. Shared Diary sells 1 in-app purchase, starting at $2.99 per month. Pairlog asks for nothing beyond the download.
Shared Diary ships an update fortnightly, Pairlog weekly. The most recent releases landed on October 10, 2026 and October 19, 2026 respectively.
| Parameter | Shared Diary | Pairlog |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 41 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Originate Aster, Inc. | RINTARO YAMADA |
In-app purchases
Shared Diary
- Proプラン(1か月間)$2.991 Month
Pairlog
No in-app purchases









