買取チェッカー vs Kotodute
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
買取チェッカー
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“いま一番高く売れるお店”がでわかる! 最新買取価格の一括比較・ショップ横断検索アプリ 「どこのお店の買取が一番高いか調べるのが面倒…」 「複数のお店を回って、一番お得な売り先を探すのが大変…」 「最新の買取相場を知って、損をせずに売りたい…」 買取チェッカーは、そんなトレカユーザーのための買取価格比較アプリです。 ■ 買取チェッカーでできること 1. 有名ショップの買取表をリアルタイム集約 各人気店舗が公開している最新の買取表を毎日自動で集約。 ショップを横断して最高値を一覧表示するので、もう何軒もサイトを巡る必要はありません。 2. カードを撮るだけ!スキャン検索 手元のカードを撮影するだけで自動でカードを特定し、各ショップの最新買取価格をリストアップ。 検索窓にカード名を入れる手間なく、瞬時に価格を調べられます。 3. 複数枚の合計買取額をシミュレーション 売りたいカードを次々と撮影して追加すれば、合計金額を自動計算。 「このカードたちの合計が、A店なら◯円、B店なら◯円」という比較が簡単にできます。 4. 「まとめて売るならどこ?」もすぐわかる 登録したカードリストをもとに、ショップごとの合計買取額をランキング表示。 どのお店に持ち込むのが良さそうか、一目で判断できます。 5. 相場の動きをグラフでチェック 過去の買取価格の推移をグラフで確認できます。 今の価格が過去と比べて高いのか低いのか、売り時を判断するデータとして活用してください。 ■ こんな方におすすめ! ・各ショップの買取表を一つずつ確認するのが面倒な方 ・手持ちのカードが各店舗でいくらになるか、まとめて比較したい方 ・一番高い買取店を効率よく見つけたい方 ・トレカの相場推移を把握したい方 ■ 対応商品 現在はポケモンカード(ポケカ)、ワンピースカードに対応しています。 ※今後、上記以外のTCGやホビー商材にも順次拡大予定です。 ■ 掲載店舗について 首都圏の有名ショップを中心に、実店舗の買取価格表を網羅しています。 ※本アプリは価格情報の比較・集約サービスであり、アプリ内での直接の買取・査定は行っておりません。売却の際は各店舗のルールに従ってご利用ください。
Kotodute
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Do you have words you want to leave behind for someone you love? Kotodute is an app that delivers your heartfelt messages to the people who matter most, when you no longer can. Create a message for one loved one free forever. Upgrade with a one-time purchase to create up to 10 messages—no monthly or yearly subscription. Kotodute checks in with you once a month. Your message is delivered only if you stop responding, helping ensure it is sent only when truly needed. Leave your unspoken words in safe hands, and let them reach the future. FEATURES ■ One Message Free Forever Create and keep one message for a loved one at no cost. Upgrade with a one-time purchase to create up to 10 messages. No subscriptions. No recurring fees. ■ Your Data Stays Yours Kotodute has no developer-operated server. Your messages, recipients, and settings are stored only in your own Google account. No one—including the developer—can view or access your messages. Your memories remain under your control. ■ Messages Are Sent from Your Gmail Messages are never sent from our servers. If delivery becomes necessary, they are sent directly from your own Gmail account. Recipients receive the message as if it came directly from you. ■ Monthly Check-ins Help Prevent Mistakes Once a month, simply confirm that you're okay. As long as you continue checking in, your messages will never be sent. If a check-in is missed, reminder emails are sent first to reduce the risk of accidental delivery. ■ Simple Setup 1. Write your message. 2. Choose the recipient. 3. Check in once each month. That's all. WHO IS IT FOR? • Anyone who wants to leave a message for loved ones • People who want to express gratitude to family • Those who want to leave words for a spouse or partner • Parents who want to leave messages for their children • Anyone preparing for the future, one step at a time • Anyone who wants peace of mind FREQUENTLY ASKED QUESTIONS Q. Is the app free? A. Yes. One message for one loved one is free forever. A one-time purchase unlocks up to 10 messages. Q. Is there a subscription? A. No. Kotodute uses a one-time purchase. There are no monthly or yearly fees. Q. Where are my messages stored? A. Everything is stored only in your own Google account. No one—including the developer—can access your data. Q. Who sends the messages? A. Messages are sent from your own Gmail account, never from a company server. Q. When are messages delivered? A. If you do not complete your monthly check-in, messages are scheduled to be sent on the first day of the following month. If you have designated a trusted contact, they will first receive an email asking them to confirm your well-being. Messages are sent only if no response is received within 48 hours. Q. How do you prevent accidental delivery? A. Kotodute requires a monthly check-in and sends reminder emails before any delivery. Multiple confirmation steps help minimize accidental sending. Q. Why do I need a Google account? A. Your data is never stored on our servers. Everything stays securely in your own Google account, ensuring only you control your messages. Q. Do recipients need the app? A. No. They receive a normal email and do not need to install Kotodute. Q. Do I need the app to edit my messages? A. Yes. Editing messages requires the Kotodute app. Q. Does Kotodute support widgets? A. Yes. You can complete your monthly check-in directly from a widget without opening the app. The words you leave behind may become a lifelong treasure for someone you love. Kotodute helps deliver the words you couldn't say, even when you're no longer able to say them yourself.
Screenshots
Verdict
The clearest difference is in-app purchases: 買取チェッカー at none against Kotodute's 1. 買取チェッカー also leads on iOS requirement (16.4 vs 18.0). Kotodute's advantage is ads (none vs shown) and update cadence (every 2 weeks vs monthly). 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
Both are free to download. Kotodute sells 1 one-off in-app purchase. 買取チェッカー asks for nothing beyond the download.
買取チェッカー ships an update monthly, Kotodute every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | 買取チェッカー | Kotodute |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 88 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | YKP, KK | Toshinori Matsui |
In-app purchases
買取チェッカー
No in-app purchases
Kotodute
- Kotodute Premium$5.99









