Comparison

Missing Number Calculator vs ぺたっとメモ

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

Head to head

Missing Number Calculator

About

Missing Number Calculator

Features

Read full description

Instantly solve missing number math puzzles! Find the value of the blank with this intuitive calculator app. Missing Number Calculator lets you solve equations with a missing value. Enter a math expression with a blank, and the app finds the answer instantly. Perfect for learning, practice, or fun!

About

ぺたっとメモ

Features

Read full description

ぺたっとメモ「あとで見返したい」「今すぐ残したい」そんなメモを、付箋みたいに“ぺたっ”と貼れるアプリです。スクリーンショット、画像、 URL、ひとことメモ。整理を頑張らなくても、気軽に残せます。やさしい色合いと、気持ちいいアニメーションで、毎日つい開きたくなるメモ体験を。 ●主な機能付箋みたいなメモUI スクショ・画像保存 URLメモ色分けメモドラッグ並び替えシンプル検索気持ちいいアニメーション ●こんな人におすすめスクショが増えがちメモ整理が苦手シンプルなメモアプリが欲しいかわいいUIが好き思いつきをすぐ残したい

Screenshots

Missing Number Calculator1 screens

ぺたっとメモ4 screens

Verdict

The call

The clearest difference is price: ぺたっとメモ at Free against Missing Number Calculator's $0.99. ぺたっとメモ also leads on update cadence (daily vs every 3 days) and iOS requirement (15.1 vs 17.0). On ads, 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

ぺたっとメモ is free to download; Missing Number Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Missing Number Calculator ships an update every 3 days, ぺたっとメモ daily. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 3 level

Missing Number Calculator versus ぺたっとメモ: the parameters behind the verdict, then further details
Parameter	Missing Number Calculator	ぺたっとメモ
Price	$0.99	Free — better
Update frequency	Every 3 days	Daily — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad	iPhone, iPad, iPod — better
Requires iOS	17.0	15.1 — better
Further details — not scored
Size	6 MB	79 MB
Age rating	4+	4+
Developer	Infinity Inc. (Apps)	MARIE MORIKAGE

In-app purchases

None

Missing Number Calculator

No in-app purchases

None

ぺたっとメモ

No in-app purchases

Questions

Is Missing Number Calculator free?

Missing Number Calculator costs $0.99, with no in-app purchases.

Is ぺたっとメモ free?

ぺたっとメモ is free to download, with no in-app purchases.

Do Missing Number Calculator or ぺたっとメモ have ads?

Neither Missing Number Calculator nor ぺたっとメモ shows ads.

Which is updated more often, Missing Number Calculator or ぺたっとメモ?

Missing Number Calculator ships an update every 3 days, and ぺたっとメモ daily. Most recently, Missing Number Calculator was updated on October 13, 2026 and ぺたっとメモ on October 6, 2026.