Comparison

SOURCE【ソース】 vs こいびと日記

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

Head to head

想いをカタチに、毎日ひと文字

About

SOURCE【ソース】

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SOURCE(ソース)の公式アプリです。【概要】 ■アプリ上から24時間いつでも予約が可能指名予約にも対応しているので担当スタッフのスケジュールを確認してからの予約が可能です。 ■クーポンお得なクーポンが配信されます。ネット予約時にクーポン利用での予約も可能なので来店時もスムーズに施術頂けます。 ■スタッフが施術したギャラリーを掲載前もって画像を確認しておけばスムーズなオーダーが可能です。 ■マイページ機能予約状況の確認やキャンセルがマイページ上から行えます。スタッフの登録が出来るので前もって担当者を登録しておけばマイページからスムーズな指名予約が可能です。

About

こいびと日記

Features

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Koibito Diary is a gentle 365-day journal for writing to, or about, someone you love. What you can do: - Answer one daily prompt at any length you like - Record your mood in five levels and attach one photo - Review your streaks and monthly flow on the calendar - Look back through recent memories and small signs Koibito Pro unlocks: - PDF export for a full year of entries - Custom prompts - All themes Koibito Pro is an auto-renewable subscription with weekly and yearly plans. The price and renewal period are shown in the app and on the App Store purchase confirmation screen before purchase. Purchases can be restored with your Apple ID. The app uses Apple's standard EULA and includes a Privacy Policy link in the app. Koibito Pro offers weekly and yearly auto-renewable plans. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://starcrown.co.jp/privacy

Screenshots

SOURCE【ソース】2 screens

こいびと日記3 screens

Verdict

The call

The clearest difference is in-app purchases: SOURCE【ソース】 at none against こいびと日記's 2. SOURCE【ソース】 also leads on iOS requirement (13.0 vs 17.0). こいびと日記's advantage is update cadence (fortnightly vs every 6 weeks). 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. こいびと日記 sells 2 in-app purchases, starting at $1.99 per 7 days. SOURCE【ソース】 asks for nothing beyond the download.

UpkeepUpdate frequency

SOURCE【ソース】 ships an update every 6 weeks, こいびと日記 fortnightly. The most recent releases landed on September 14, 2026 and September 13, 2026 respectively.

Scorecard3 real differences · 3 level

SOURCE【ソース】 versus こいびと日記: the parameters behind the verdict, then further details
Parameter	SOURCE【ソース】	こいびと日記
Price	Free	Free
Update frequency	Every 6 weeks	Fortnightly — better
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPod — better	iPhone
Requires iOS	13.0 — better	17.0
Further details — not scored
Size	4 MB	23 MB
Age rating	4+	4+
Developer	shingo kamei	Starcrown Inc

In-app purchases

None

SOURCE【ソース】

No in-app purchases

2 purchases

こいびと日記

Subscriptions2

Weekly Pro3 Days trial$1.997 Days
Yearly Pro$29.991 Year

Questions

Is SOURCE【ソース】 free?

SOURCE【ソース】 is free to download, with no in-app purchases.

Is こいびと日記 free?

こいびと日記 is free to download, with in-app purchases available.

Do SOURCE【ソース】 or こいびと日記 have ads?

Neither SOURCE【ソース】 nor こいびと日記 shows ads.

Which is updated more often, SOURCE【ソース】 or こいびと日記?

SOURCE【ソース】 ships an update every 6 weeks, and こいびと日記 fortnightly. Most recently, SOURCE【ソース】 was updated on September 14, 2026 and こいびと日記 on September 13, 2026.