Comparison

Simple Memo Notes vs ロックメモ

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

Head to head

Simple Memo Notes

Handwrite on your smartwatch

About

Simple Memo Notes

Features

Read full description

Simple Notes is a handwriting memo app for Apple Watch and iPhone. - Handwrite on your Apple Watch and see it on your iPhone right away. - Operate the Watch with one hand, even while it stays in your pocket. - Add and edit handwritten notes on iPhone too. - No account needed. Your notes are stored on your device. Jot down whatever comes to mind on the Watch on your wrist, without taking out your phone.

About

ロックメモ

This app allows you to display notes and to-dos directly on your lock screen, ensuring you never forget important information. It also features a doodle function for creative expression and an idea generator to inspire your day.

Highlights

Lock screen note display
To-do list management
Customizable colors and designs
Freehand drawing/doodle function
Daily idea generator
Note and memo creation

Features

Read full description

「ロックメモ」は、忘れたくないメモやToDoをロック画面に表示できるメモアプリです。買い物リスト、今日やること、大切な予定などを登録しておけば、iPhoneを開くたびにすぐ確認できます。メモやToDoだけでなく、自由に線や文字を書ける落書き機能にも対応。好きな色やデザインで、自分だけのロック画面メモを作れます。さらに、休日や空いた時間にやりたいことが見つかるアイデア機能も搭載しています。【こんな方におすすめ】・予定やタスクを忘れやすい・メモやToDoをすぐ確認したい・ロック画面を自分好みにしたい・手書きや落書きで自由にメモしたい・毎日のちょっとしたアイデアが欲しい【主な機能】・メモの作成、管理・ToDoリストの作成、管理・ロック画面へのメモ表示・色やデザインのカスタマイズ・自由に書ける落書き機能・毎日を楽しむアイデア機能忘れたくないことを、いつでも目に入る場所へ。ロックメモで、毎日の予定やひらめきをもっと気軽に残しましょう。

Screenshots

Simple Memo Notes1 screens

ロックメモ4 screens

Verdict

The call

The clearest difference is ads: Simple Memo Notes at none against ロックメモ's shown. ロックメモ's advantage is update cadence (every 2 days vs every 3 weeks) and iOS requirement (15.0 vs 26.4). On price, 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. Simple Memo Notes sells 2 in-app purchases, starting at $24.99 per month and ロックメモ sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Simple Memo Notes ships an update every 3 weeks, ロックメモ every 2 days. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

Scorecard3 real differences · 5 level

Simple Memo Notes versus ロックメモ: the parameters behind the verdict, then further details
Parameter	Simple Memo Notes	ロックメモ
Price	Free	Free
Positive reviews	—	100.0% of reviews
Update frequency	Every 3 weeks	Every 2 days — better
Ads	No — better	Yes
In-app purchases	Yes	Yes
Monetization	—	Free with in-app purchases
Devices	iPhone, Apple Watch	iPhone, iPod
Requires iOS	26.4	15.0 — better
Further details — not scored
Size	1 MB	93 MB
Age rating	4+	4+
Developer	Kazuki Iwanaga	Shunsuke Kaburagi

In-app purchases

2 purchases

Simple Memo Notes

Subscriptions2

MagicMemo Pro 月額プラン$24.991 Month
MagicMemo Pro 年額プラン$199.991 Year

7 purchases

ロックメモ

One-time7

チケット10枚$0.99
チケット20枚$1.99
プレミアムサービス$2.99

Show 4 more

チケット50枚$3.99
チケット100枚$5.99
チケット300枚$14.99
チケット500枚$24.99

Questions

Is Simple Memo Notes free?

Simple Memo Notes is free to download, with in-app purchases available.

Is ロックメモ free?

ロックメモ is free to download, with in-app purchases available.

Do Simple Memo Notes or ロックメモ have ads?

ロックメモ shows ads; Simple Memo Notes does not.

Which is updated more often, Simple Memo Notes or ロックメモ?

Simple Memo Notes ships an update every 3 weeks, and ロックメモ every 2 days. Most recently, Simple Memo Notes was updated on October 2, 2026 and ロックメモ on October 3, 2026.