MAMORIO vs 三井のカーシェアーズ(New)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MAMORIO
This app helps you prevent losing your belongings by attaching a small tag. It notifies you when you leave an item behind and allows you to see its last detected location via a Bluetooth crowd-sensor network. It also offers a community-based finding feature and lost-and-found integration in select regions.
- Left-behind alerts
- Last detected location history
- Crowd tracking network
- MAMORIO Spot integration (Japan)
- iPhone found alerts (Japan)
- Tag setup and management
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A modern charm for your keys and wallet. MAMORIO is the official app for the lost-item prevention tag that lets you trace "when and where" your belongings were last seen. Not GPS — a Bluetooth crowd-sensor network. That's why MAMORIO is thin, light, and long-lasting on battery. Comfortable to keep on your keys or in your wallet, all year round. What this app does - Set up and manage your MAMORIO tags in minutes - Notify you the moment your tag is out of range (left-behind alert) - Show the last detected place and time on a map (history, not real-time tracking) - Turn "Find with Everyone" (crowd tracking) on or off - Receive alerts from MAMORIO Spot stations (Japan only) - Get an email if your iPhone itself reaches a partnered lost-and-found center ■ Left-behind alerts, the moment it matters The moment your iPhone stops detecting your MAMORIO, you'll get a notification. A small heads-up before you leave the table, the train, or the meeting room prevents most forgotten items. ■ Trace "when and where" — on a map View the last place and time your MAMORIO was detected. MAMORIO does not stream a live location. It records each detected moment as history, so you can retrace where it might be. ■ Find with Everyone — crowd tracking (Patent No. 5894309) A unique feature that uses the network of MAMORIO users to quietly search for your missing item. When your MAMORIO is not nearby, a "Find with Everyone" button appears. Turn it on, and whenever another MAMORIO user passes near your tag, the place and time are sent to your app. * No information about your MAMORIO is shared with other users. ■ MAMORIO Spot — partnered lost-and-found counters (Japan only) In Japan, major train stations and commercial facilities are equipped with MAMORIO Spot devices. When a missing MAMORIO arrives at a Spot, the location is delivered to your app. The current list of partnered centers is available in-app. (Requires "Find with Everyone" to be on. This feature is currently available in Japan only.) ■ When your iPhone itself is found (Japan only) If the iPhone running this app is turned in to a partnered lost-and-found center in Japan, you'll receive an email at your registered address. You can use this feature even without owning a MAMORIO tag. * Configuration via the app or web is required. The list of partnered centers is available in-app. Currently limited to Japan. Before you start ■ There is no GPS chip inside MAMORIO MAMORIO records a history of "when and where" your item was detected. It cannot stream the live position of an item that has left your side. In return, MAMORIO is remarkably thin, light, and long on battery life. It is not suitable for real-time tracking of children, pets, or elderly family members. ■ About location data Location is obtained via your iPhone's GPS and network signals. Accuracy may vary by signal conditions and environment. For background detection, we recommend setting Location to "Always Allow". ■ Effective range (Bluetooth) Communication range varies by product model and can be shortened by walls, crowds, or interference. [Specifications] Wireless: Bluetooth Low Energy URL scheme: mamorio:// A quiet, watchful Bluetooth network. A modern charm for the keys and wallet you'd rather never lose.
三井のカーシェアーズ(New)
A car-sharing service offering 24/7 access to vehicles from 30-minute increments. Easily search, book, use, and return cars through the app, with a wide selection of vehicle types and flexible pricing plans.
- 24/7 car access from 30-minute increments
- App-based search, booking, usage, and return
- Wide variety of vehicle types
- Flexible pricing plans
- Biometric login (fingerprint/face recognition)
- Quick start from sign-up
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【三井のカーシェアとは】 24時間いつでも、最短30分からクルマを使える“新しいカーライフ”を提供するカーシェアサービスです。 三井のリパーク駐車場などにあるステーションから、まるでマイカーのように手軽に利用可能。 旅行や買い物、送迎、ビジネスシーンまで、あらゆるシーンでご利用いただけます。 【特徴】 ・アプリひとつで検索・予約・利用・返却までシームレスに完結 ・コンパクトカー、SUV、ミニバン、輸入車など、豊富なラインアップ ・ベーシックプラン/月会費無料プランなど、ライフスタイルに合わせて選べる料金体系 ・入会申込から最短15分で利用スタート。思い立ったその日にすぐ使える ・指紋・顔認証による生体ログイン対応で、安心・スムーズな操作性 【こんな方におすすめ】 ・マイカーを持たず、必要な時だけ車を使いたい方 ・買い物・レジャー・出張など、シーンに合わせて車を選びたい方 ・駐車場「三井のリパーク」をよく利用している方 ・スマートフォンで手軽に予約・決済まで完結させたい方 「三井のカーシェアーズ」で、 あなたの毎日をもっと自由に、もっと快適に。 スマートな移動の新しいスタンダードを、ここから始めましょう。
Screenshots
Verdict
The clearest difference is rating: 三井のカーシェアーズ(New) at 4.7 against MAMORIO's 4.0. 三井のカーシェアーズ(New) also leads on in-app purchases (none vs 4) and ratings volume (16 vs 3). MAMORIO's advantage is review sentiment (25% vs 17%). 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
Both are free to download. MAMORIO sells 4 in-app purchases, starting at $8.99 per year. 三井のカーシェアーズ(New) asks for nothing beyond the download.
三井のカーシェアーズ(New) holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: 三井のカーシェアーズ(New) has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 25% of MAMORIO's written reviews are positive against 17% of 三井のカーシェアーズ(New)'s, so the app with the better star average is not the one people write more warmly about.
MAMORIO ships an update every 10 days, 三井のカーシェアーズ(New) every 2 weeks. Both last shipped on October 24, 2026.
| Parameter | MAMORIO | 三井のカーシェアーズ(New) |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) | 4.7 (16 ratings) — better |
| Positive reviews | 25.5% of reviews — better | 17.4% of reviews |
| Number of ratings | 3 | 16 — better |
| Update frequency | Every 10 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 63 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | NEARIZE K.K. | Mitsui Fudosan Realty Co., Ltd. |
Customer experience
MAMORIO
三井のカーシェアーズ(New)
In-app purchases
MAMORIO
- Anshin Plan(wallet)$8.991 Year
- AnshinPlan(Bag)$8.991 Year
- Anshin Plan(Key)$8.991 Year
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- Anshin Plan(Electronics)$8.991 Year
三井のカーシェアーズ(New)
No in-app purchases









