PLOPI vs Whatcha Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PLOPI
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PLOPI is a private diary for two that can begin with one unexpected line, one invite, or one person you want to answer. Sometimes a few words stay with you before you know much about the person. Instead of disappearing in a fast chat, those words can become a slower diary you can read again later. Write about a scene from your way home. A small thought that reminded you of them. A thank-you you did not want to lose. The feeling of a day that a photo alone cannot hold. With PLOPI, a short note, a longer letter, a photo, or a sticker can become part of a diary that belongs to just the two of you. A DIARY FOR JUST THE TWO OF YOU Invite one person and start a diary together. Use it with a partner, someone you miss, a close friend, or someone far away, without needing to reply right away. SLOWER THAN CHAT, EASIER TO KEEP PLOPI is not built around instant replies. Write at your own pace, let the other person read at theirs, and keep the feelings you may want to revisit later. WRITE LIKE A LETTER Encouragement, everyday updates, gratitude, or a small love letter. PLOPI gives you a calm place to write what did not fit into a quick message. ADD PHOTOS AND STICKERS Make entries feel personal with photos and stickers. Even a short line can become a memory worth opening again. WHY PLOPI - Private diary for just the two of you - Letter-like entries for a partner or someone you miss - Made for couples, close friends, and long distance - Photos and stickers for more personal memories - A gentle alternative to fast chat - Feelings and memories you can read again - Free to start If you are looking for a diary app, couples journal, private letters, a friend diary, or a calm way to stay close across distance, start your first diary for two with PLOPI. Terms of Use : https://help.plo-pi.com/en/terms/2026-06-05-1
Whatcha Diary
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Whatcha - A group diary, built for how memories actually happen together Traditional social apps broadcast from one person to many. Whatcha is different: one group, multiple people, one shared story — built for couples, classrooms, teams, and friends who want to record memories together. 【Key Features】 ・A History Where Nothing Is Lost Every save keeps the diary as it was. See who added what, go back to an earlier version at any time, and bring two accounts of the same day together into one. ・Group-First, Not Solo-First Every diary belongs to a group. Invite the people who matter, and build one shared story together instead of broadcasting to strangers. ・Fine-Grained Permissions Control exactly who can create, read, update, or delete entries in each group — down to the individual member. ・Calendar & Card Views Browse your shared memories by month or as a scrollable feed — however you like to look back. 【Recommended for】 ・Couples who want a shared diary of their relationship ・Classrooms and teams keeping a shared log ・Friends documenting a trip together ・Anyone tired of broadcasting to an audience instead of sharing with people who matter Start your shared story on Whatcha today.
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Verdict
The clearest difference is in-app purchases: Whatcha Diary at none against PLOPI's 2. Whatcha Diary also leads on ads (none vs shown). PLOPI's advantage is update cadence (every 2 days vs every 5 days). On price, 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. PLOPI sells 2 in-app purchases, starting at $3.99 per month. Whatcha Diary asks for nothing beyond the download.
PLOPI ships an update every 2 days, Whatcha Diary every 5 days. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.
| Parameter | PLOPI | Whatcha Diary |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days — better | Every 5 days |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 58 MB | 83 MB |
| Age rating | 17+ | 4+ |
| Developer | Beyond Imagine | Takanori Nagashima |
In-app purchases
PLOPI
- PLOPI PASS1 Month trial$3.991 Month
- Standard Sticker Item$0.49
Whatcha Diary
No in-app purchases





