Comparison

ここに手紙を置いてきた。 vs PLOPI

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

Head to head
About

ここに手紙を置いてきた。

Features
Read full description

Someone left a letter somewhere in your city. Envelope icons float on the map. Walk within 10 meters to read one. Once read, the letter disappears — and you earn the right to leave one of your own. Anonymous letters. Words from strangers. Tiny secrets hidden in your neighborhood. --- How to Play --- 1. Find letters on the map 2. Walk within 10m to unlock 3. Open and read (letter disappears) 4. Earn writing credits by reading 5. Leave a letter at your current spot One free letter per day. Read more to write more. 47 seed letters are placed across Japan. Find the one in your city.

About

PLOPI

Features
Read full description

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

Screenshots

ここに手紙を置いてきた。4 screens
PLOPI4 screens

Verdict

The call

The clearest difference is in-app purchases: ここに手紙を置いてきた。 at none against PLOPI's 2. PLOPI's advantage is iOS requirement (15.0 vs 18.0). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PLOPI sells 2 in-app purchases, starting at $3.99 per month. ここに手紙を置いてきた。 asks for nothing beyond the download.

Scorecard2 real differences · 4 level
ここに手紙を置いてきた。 versus PLOPI: the parameters behind the verdict, then further details
Parameterここに手紙を置いてきた。PLOPI
PriceFreeFree
Update frequency—Every 2 days
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size19 MB58 MB
Age rating4+17+
Developersatoshi amasakiBeyond Imagine

In-app purchases

None

ここに手紙を置いてきた。

No in-app purchases

2 purchases

PLOPI

Subscriptions1
  • PLOPI PASS1 Month trial$3.991 Month
One-time1
  • Standard Sticker Item$0.49

Questions

Is ここに手紙を置いてきた。 free?
ここに手紙を置いてきた。 is free to download, with no in-app purchases.
Is PLOPI free?
PLOPI is free to download, with in-app purchases available.
Do ここに手紙を置いてきた。 or PLOPI have ads?
Both ここに手紙を置いてきた。 and PLOPI show ads.

Other comparisons