Comparison

MAMORIO vs Riiiver

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

Head to head
About

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.

Highlights
  • Left-behind alerts
  • Last detected location history
  • Crowd tracking network
  • MAMORIO Spot integration (Japan)
  • iPhone found alerts (Japan)
  • Tag setup and management
Features
Read full description

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.

About

Riiiver

This platform allows users to create and customize "iiideas" by connecting compatible products and services. No programming skills are required to assemble functional modules and bring your own ideas to life.

Highlights
  • Create and use functional "iiideas"
  • Assemble functions from Trigger, Service, and Action Pieces
  • No programming skills needed
  • Develop custom Pieces (for advanced users)
  • Connects compatible products and services
  • Open IoT platform
Features
Read full description

Riiiver is an IoT platform that connects products and services, expanding their possibilities and providing a new kind of user experience. *Limited to Riiiver-compatible products and services. ~~Create and Use Your "iiideas"~~ With the Riiiver app, you can create and use functional items called "iiidea." Start by selecting one of the available iiideas that interests you and give it a try! ~~Make your “iiideas” come to life~~ You can create “iiidea” for the Riiiver platform. If you’ve ever wondered, “Wouldn’t it be great if I could do this?” or “Wouldn’t it be convenient to have that function?”, with Riiiver you can easily shape your ideas and make them a reality. ~~No special skills are needed!~~ Creating new functions with Riiiver is so easy. You don’t need to know anything about programming. All you have to do is put together a few functional modules (known as Pieces) in the app. Those with specialized knowledge (such as programming) can even create Pieces themselves. For more information on Piece development, please visit the Riiiver Developers website (https://developer.riiiver.com). ~~The structure of Riiiver~~ In Riiiver, functions are called “iiidea.” They are assembled from the three types of Pieces: Trigger, Service, and Action. To see a list of available Pieces, please check the following page: https://app.riiiver.com/piece_list/piece_list.html Riiiver is an open IoT platform service. As such, we plan to increase the number of compatible products in the future, so please stay tuned!

Screenshots

MAMORIO3 screens
Riiiver4 screens

Verdict

The call

The clearest difference is rating: MAMORIO at 4.0 against Riiiver's 1.0. MAMORIO also leads on update cadence (every 10 days vs every 2 months) and review sentiment (25% vs 17%). Riiiver's advantage is in-app purchases (none vs 4). On price, ratings volume, 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. MAMORIO sells 4 in-app purchases, starting at $8.99 per year. Riiiver asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MAMORIO holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews point the same way: 25% of MAMORIO's written reviews are positive against 17% of Riiiver's.

UpkeepUpdate frequency

MAMORIO ships an update every 10 days, Riiiver every 2 months. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.

Scorecard5 real differences · 5 level
MAMORIO versus Riiiver: the parameters behind the verdict, then further details
ParameterMAMORIORiiiver
PriceFreeFree
Rating4.0 (3 ratings) — better1.0 (4 ratings)
Positive reviews25.5% of reviews — better16.7% of reviews
Number of ratings34 — better
Update frequencyEvery 10 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size63 MB34 MB
Age rating4+4+
DeveloperNEARIZE K.K.CITIZEN WATCH CO.,LTD

Customer experience

MAMORIO

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews51 reviews
Positive25.5%
Neutral13.7%
Negative60.8%

Riiiver

All ratings4 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews6 reviews
Positive16.7%
Neutral16.7%
Negative66.7%

In-app purchases

4 purchases

MAMORIO

Subscriptions4
  • Anshin Plan(wallet)$8.991 Year
  • AnshinPlan(Bag)$8.991 Year
  • Anshin Plan(Key)$8.991 Year
Show 1 more
  • Anshin Plan(Electronics)$8.991 Year
None

Riiiver

No in-app purchases

Questions

Is MAMORIO free?
MAMORIO is free to download, with in-app purchases available.
Is Riiiver free?
Riiiver is free to download, with no in-app purchases.
Which has better reviews, MAMORIO or Riiiver?
MAMORIO is rated higher. MAMORIO averages 4.0 out of 5 from 3 ratings, while Riiiver averages 1.0 from 4 ratings.
Do MAMORIO or Riiiver have ads?
Neither MAMORIO nor Riiiver shows ads.
Which is updated more often, MAMORIO or Riiiver?
MAMORIO ships an update every 10 days, and Riiiver every 2 months. Most recently, MAMORIO was updated on October 29, 2026 and Riiiver on October 21, 2026.

Other comparisons