Comparison

single line diary vs When · Days That Matter

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

Head to head
About

single line diary

A simple daily journal app that allows you to record entries from 62 days in the past up to tomorrow. It features a checkbox for each day and lets you customize the start of your week to Sunday or Monday.

Highlights
  • Daily single line entries
  • Checkbox for each day
  • Customizable week start (Sunday/Monday)
  • Date range: 62 days prior to tomorrow
Read full description

from 62 days before to tomorrow, 64 days daily single line diary with a checkbox. switching the first day of the week in Sunday or Monday.

About

When · Days That Matter

Features
Read full description

When (formerly #DAYS) helps you keep the dates that shape your past, present, and future. Birthdays, anniversaries, and the days a plan begins or ends can all live on one continuous timeline. ONE STORY, MORE THAN ONE DATE Add beginnings, endings, and other moments to the same record, so its full arc stays together—not just a countdown number. SEE TIME CLEARLY Browse what has passed, what is in progress, and what is coming next. When uses each actual date and keeps the exact day count visible. HOME SCREEN WIDGETS Keep important dates and photos on your Home Screen. Each widget size can have its own event and composition. GENTLE, USEFUL REMINDERS Set custom and milestone reminders. Notifications are scheduled locally on your device, with no account required. FREE & PREMIUM Create up to 10 records for free, with iCloud sync and timelines included. Premium unlocks unlimited records, advanced reminders, poster widget layouts, and celebration effects. A one-time purchase unlocks Premium permanently. Your records are designed with privacy in mind. If you enable iCloud, sync is provided by Apple CloudKit. Purchases are handled by Apple’s StoreKit. Questions or feedback? Email aloooone@proton.me Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

single line diary1 screens
When · Days That Matter4 screens

Verdict

The call

The clearest difference is in-app purchases: single line diary at none against When · Days That Matter's 1. single line diary also leads on iOS requirement (6.0 vs 17.0). When · Days That Matter's advantage is ads (none vs shown) and update cadence (every 3 days vs every 6 months). On price 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. When · Days That Matter sells 1 one-off in-app purchase. single line diary asks for nothing beyond the download.

UpkeepUpdate frequency

single line diary ships an update every 6 months, When · Days That Matter every 3 days. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 4 level
single line diary versus When · Days That Matter: the parameters behind the verdict, then further details
Parametersingle line diaryWhen · Days That Matter
PriceFreeFree
Positive reviews45.5% of reviews—
Update frequencyEvery 6 monthsEvery 3 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPod — betteriPhone
Requires iOS6.0 — better17.0
Further details — not scored
Size4 MB6 MB
Age rating4+4+
DeveloperSHIGETO TAKAGI杰龙 刘

In-app purchases

None

single line diary

No in-app purchases

1 purchases

When · Days That Matter

One-time1
  • When Premium · Lifetime Access$0.99

Questions

Is single line diary free?
single line diary is free to download, with no in-app purchases.
Is When · Days That Matter free?
When · Days That Matter is free to download, with in-app purchases available.
Do single line diary or When · Days That Matter have ads?
single line diary shows ads; When · Days That Matter does not.
Which is updated more often, single line diary or When · Days That Matter?
single line diary ships an update every 6 months, and When · Days That Matter every 3 days. Most recently, single line diary was updated on October 11, 2026 and When · Days That Matter on October 12, 2026.

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