Comparison

Positive Journal vs シンプル3行日記

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

Head to head
About

Positive Journal

Features
Read full description

Layer Diary is a journaling app designed to make the "3-Line Positive Journal" a daily digital habit. Writing three positive lines each night builds resilience — the ability to bounce back from stress, setbacks, and hard days with greater ease. The rule is simple. Before bed, write down three good things that happened today. Your brain encodes memories most powerfully in the 15 minutes before sleep. Fill that window with something good, and your mind consolidates the whole day as a positive one. No negatives. No pressure. Small things count — "The weather was beautiful" or "My evening walk felt great" is enough. Keep it up, and gratitude stops feeling like a practice. It starts feeling like you. Your past, quietly layering beneath you Every entry adds a new layer. Tap any date and look back at the same day last year, the same day last month, the same weekday last week — all stacked and scrollable. You'll see, in one glance, how far you've come. A built-in daily reminder helps you make this a non-negotiable part of your night routine. Your thoughts, protected Face ID lock. Automatic iCloud sync. Plain text export. Your words, guarded quietly — always there when you need them. Three lines tonight. A better you, eventually.

About

シンプル3行日記

Features
Read full description

シンプル3行日記は、1日3行だけ書く、続けやすい日記アプリです。 ■ 特長 ・今日の出来事を3行だけ記録 ・連続日数(ストリーク)と最長記録を表示 ・過去の記録を日付つきで振り返り ・日本語/英語の切り替え、ダークモードに対応 ・広告付きで完全無料 三日坊主になりがちな人でも続けやすい、ゆるい日記習慣を。

Screenshots

Positive Journal4 screens
シンプル3行日記3 screens

Verdict

The call

The clearest difference is ads: Positive Journal at none against シンプル3行日記's shown. シンプル3行日記's advantage is iOS requirement (17.0 vs 26.2). On price, update cadence, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Positive Journal ships an update every 4 days, シンプル3行日記 every 3 days. The most recent releases landed on September 20, 2026 and September 16, 2026 respectively.

Scorecard2 real differences · 4 level
Positive Journal versus シンプル3行日記: the parameters behind the verdict, then further details
ParameterPositive Journalシンプル3行日記
PriceFreeFree
Update frequencyEvery 4 daysEvery 3 days — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhoneiPhone
Requires iOS26.217.0 — better
Further details — not scored
Size1 MB3 MB
Age rating4+4+
DeveloperPIN STUDIOSearial, Inc.

In-app purchases

None

Positive Journal

No in-app purchases

None

シンプル3行日記

No in-app purchases

Questions

Is Positive Journal free?
Positive Journal is free to download, with no in-app purchases.
Is シンプル3行日記 free?
シンプル3行日記 is free to download, with no in-app purchases.
Do Positive Journal or シンプル3行日記 have ads?
シンプル3行日記 shows ads; Positive Journal does not.
Which is updated more often, Positive Journal or シンプル3行日記?
Positive Journal ships an update every 4 days, and シンプル3行日記 every 3 days. Most recently, Positive Journal was updated on September 20, 2026 and シンプル3行日記 on September 16, 2026.

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