Comparison

Oshi Log|Fan Support App vs Day0

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

Head to head
About

Oshi Log|Fan Support App

This app helps fans meticulously record and relive their favorite idol's activities. Track events, merchandise purchases, and fan pilgrimages with timeline and map views. Engage with AI-powered chat reactions from your idol to enhance your fan experience.

Highlights
  • Record Oshi activities in a timeline
  • Save and view pilgrimages on a map
  • AI chat reactions from your Oshi
  • Receive surprise messages based on posts
  • Social media-like memory display
Features
Read full description

◆◇ Make your Oshi life more fun and easier! ◇◆ – Record your daily Oshi activities and feel closer to them – ----- “Oshi Log” is a dedicated fan app that allows you to record your precious time with your Oshi and keep it as a memory. You can look back on experiences such as live concerts, merchandise purchases, and pilgrimages to sacred places through a timeline or a map. What’s more, you can even receive reactions (AI chat) from your Oshi, making your Oshi life even more exciting! 【App Overview】 Within the app, you can record and visualize your entire Oshi activities through multiple features such as timeline, map, and chat. ・Record your day in timeline format, event by event ・Save pilgrimages with photos on a map ・Receive chat replies from your “Oshi” powered by AI ・Get surprise messages from your Oshi based on your posts!? 【Main Features】 Record Oshi schedules by date and time Save and view pilgrimages with maps and photos Chat-like communication with your Oshi Receive messages from your Oshi based on your activity logs Display your memories in a social media-like view Your “likes” will gradually take shape into memories. With “Oshi Log,” make your Oshi life even more special! ----- “Oshi Log” helps you record, share, and celebrate your Oshi life. Download now and start a brighter, more exciting Oshi journey every day! - Contact For feedback or feature requests, please reach out at: karirin419@gmail.com - Terms of Service https://sites.google.com/view/termsofserviceview - Privacy Policy https://sites.google.com/view/privacypolicyview3948

About

Day0

Features
Read full description

Day0 is a diary that only you will ever read. Log the moments that matter: who they were about, when they happened, and a note only you need to understand. Everything stays on your phone. When you change phones, export an encrypted backup file and restore it on the new phone. What's inside: • Log a moment in a few taps, or let the built-in timer keep the record for you • Build a quiet profile for each character you care about: birthday, aliases, your own notes • Keep track of the things you've collected, and watch the cost of each use settle over time • Review your history as calendars, timelines, and monthly look-backs • Lock your most private notes behind Face ID; the lock screen shows none of them, and widgets show only what you choose • Nine hand-tuned themes, a quiet mascot, and achievements that never nag • Encrypted backups you control, exported as one file that opens with your restore code There's no streak to keep, no leaderboard, no nudging. Write as much or as little as you want. Day0 keeps the record, quietly.

Screenshots

Oshi Log|Fan Support App4 screens
Day04 screens

Verdict

The call

The clearest difference is in-app purchases: Day0 at none against Oshi Log|Fan Support App's 3. Day0 also leads on update cadence (every 6 days vs fortnightly). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Oshi Log|Fan Support App sells 3 in-app purchases, starting at $2.99 per 7 days. Day0 asks for nothing beyond the download.

UpkeepUpdate frequency

Oshi Log|Fan Support App ships an update fortnightly, Day0 every 6 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Oshi Log|Fan Support App versus Day0: the parameters behind the verdict, then further details
ParameterOshi Log|Fan Support AppDay0
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyFortnightlyEvery 6 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size57 MB31 MB
Age rating4+4+
Developerhashimoto ryouyaMARQUE & CROWN INC.

In-app purchases

3 purchases

Oshi Log|Fan Support App

Subscriptions3
  • 広告非表示$2.997 Days
  • サブスクリプション(1ヶ月)3 Days trial$5.991 Month
  • 広告非表示3 Days trial$59.991 Year
None

Day0

No in-app purchases

Questions

Is Oshi Log|Fan Support App free?
Oshi Log|Fan Support App is free to download, with in-app purchases available.
Is Day0 free?
Day0 is free to download, with no in-app purchases.
Do Oshi Log|Fan Support App or Day0 have ads?
Neither Oshi Log|Fan Support App nor Day0 shows ads.
Which is updated more often, Oshi Log|Fan Support App or Day0?
Oshi Log|Fan Support App ships an update fortnightly, and Day0 every 6 days. Most recently, Oshi Log|Fan Support App was updated on October 30, 2026 and Day0 on October 31, 2026.

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