Comparison

When · Days That Matter vs Sparks

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

Head to head
About

When · Days That Matter

Features
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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/

About

Sparks

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Sparks 可以快速记录你头脑中的想法,支持添加文字和图片,编辑和操作同样简单,支持本地加密和黑暗模式。所有数据均在设备端离线运行,绝对不会上传您的任何数据。

Screenshots

When · Days That Matter4 screens
Sparks3 screens

Verdict

The call

The clearest difference is in-app purchases: Sparks at none against When · Days That Matter's 1. When · Days That Matter's advantage is update cadence (every 3 weeks vs every 26 months). On price 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. When · Days That Matter sells 1 one-off in-app purchase. Sparks asks for nothing beyond the download.

UpkeepUpdate frequency

When · Days That Matter ships an update every 3 weeks, Sparks every 26 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 4 level
When · Days That Matter versus Sparks: the parameters behind the verdict, then further details
ParameterWhen · Days That MatterSparks
PriceFreeFree
Update frequencyEvery 3 weeks — betterEvery 26 months
AdsNo—
In-app purchasesYesNo — better
DevicesiPhone — better—
Requires iOS17.016.0 — better
Further details — not scored
Size6 MB1 MB
Age rating4+4+
Developer杰龙 刘建辉 贾

In-app purchases

1 purchases

When · Days That Matter

One-time1
  • When Premium · Lifetime Access$0.99
None

Sparks

No in-app purchases

Questions

Is When · Days That Matter free?
When · Days That Matter is free to download, with in-app purchases available.
Is Sparks free?
Sparks is free to download, with no in-app purchases.
Which is updated more often, When · Days That Matter or Sparks?
When · Days That Matter ships an update every 3 weeks, and Sparks every 26 months. Most recently, When · Days That Matter was updated on October 24, 2026 and Sparks on October 25, 2026.

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