Comparison

Useful Lock Screen Memo vs コドモジメモ帳

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

Head to head
About

Useful Lock Screen Memo

Features
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Keep what matters in sight, right on your Lock Screen. Useful Lock Screen Memo is a notes and reminders app that lets you check important notes and plans directly from your Lock Screen. Use Live Activities and widgets to display shopping lists, today’s tasks, things you need to remember and schedules you check often. 【Key features】 ■ Lock Screen notes Save a note to display it in a Live Activity and check it quickly from your Lock Screen. You can also adjust the text size and display color. ■ Reminder notifications Choose a date and time to receive the note text as a notification. You can also repeat reminders on selected days of the week. ■ Flexible advance alerts In addition to the scheduled time, enable any alerts you need: 3 days, 2 days, 1 day, 12 hours, 6 hours, 3 hours, 2 hours, 1 hour, 30 minutes, 15 minutes, 10 minutes, 5 minutes, 3 minutes or 1 minute beforehand. Use shared default settings or choose advance alerts individually for each reminder. ■ Manage multiple reminders See your saved reminders in a vertical list. If a notification cannot be scheduled, the app clearly marks it with a warning or an error. ■ Note and reminder history Previous Lock Screen notes and completed reminders are saved in history. Delete items you no longer need by swiping or pressing and holding. ■ Notification sound selection Choose from multiple built-in sounds to suit each occasion. ■ Lock Screen widget Add the widget to check a note or quickly open the app from your Lock Screen. 【Recommended for anyone who wants to】 ・Display a shopping list on your Lock Screen ・Avoid forgetting belongings or deadlines ・Check work or study plans frequently ・Receive several alerts for an important event ・Keep simple notes and reminders together in one app ・Check a note without opening the app 【Pricing】 All features are free. The app displays ads. With the optional one-time “Remove Ads” purchase, you can hide all ads. Even without “Remove Ads”, there are no feature restrictions. 【Before using the app】 ※ Live Activities and notifications must be allowed in your device settings, and the widget must be added to your Lock Screen. ※ The display duration and update timing of Live Activities may vary depending on iOS system conditions. ※ Requires iOS 26 or later. Created by katapu.net

About

コドモジメモ帳

Features
Read full description

スマホを開くたび、我が子の文字に癒やされる。 『コドモジメモ』は、お子様が書いた今だけの愛らしい文字をメモに活用! いつでも手元に残して見返せるアプリです。 登録はかんたん!専用用紙orスマホで書いてアプリに取り込むだけ! 無機質なデジタル画面が、愛おしいあなただけの特別な空間に生まれ変わります。 仕事中や忙しい一日の合間に、ふとスマホを見た瞬間にホッとする。そんな優しい日常をポケットに。

Screenshots

Useful Lock Screen Memo4 screens
コドモジメモ帳4 screens

Verdict

The call

The clearest difference is in-app purchases: コドモジメモ帳 at none against Useful Lock Screen Memo's 1. コドモジメモ帳 also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, 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. Useful Lock Screen Memo sells 1 one-off in-app purchase. コドモジメモ帳 asks for nothing beyond the download.

UpkeepUpdate frequency

Useful Lock Screen Memo ships an update weekly, コドモジメモ帳 every 2 weeks. Both last shipped on November 10, 2026.

Scorecard2 real differences · 4 level
Useful Lock Screen Memo versus コドモジメモ帳: the parameters behind the verdict, then further details
ParameterUseful Lock Screen Memoコドモジメモ帳
PriceFreeFree
Update frequencyWeekly — betterEvery 2 weeks
AdsYesYes
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size145 MB35 MB
Age rating4+4+
Developerkatapu.netNAOTO HAYASHI

In-app purchases

1 purchases

Useful Lock Screen Memo

One-time1
  • Remove Ads$5.99
None

コドモジメモ帳

No in-app purchases

Questions

Is Useful Lock Screen Memo free?
Useful Lock Screen Memo is free to download, with in-app purchases available.
Is コドモジメモ帳 free?
コドモジメモ帳 is free to download, with no in-app purchases.
Do Useful Lock Screen Memo or コドモジメモ帳 have ads?
Both Useful Lock Screen Memo and コドモジメモ帳 show ads.
Which is updated more often, Useful Lock Screen Memo or コドモジメモ帳?
Useful Lock Screen Memo ships an update weekly, and コドモジメモ帳 every 2 weeks. Most recently, Useful Lock Screen Memo was updated on November 10, 2026 and コドモジメモ帳 on November 10, 2026.

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