# スマート温湿度計 vs MemoRing

The clearest difference is update cadence: MemoRing at monthly against スマート温湿度計's every 6 months. スマート温湿度計's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

スマート温湿度計 ships an update every 6 months, MemoRing monthly. The most recent releases landed on September 13, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | スマート温湿度計 | MemoRing |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Size | 34 MB | 7 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RATOC Systems, Inc.](https://appshunter.io/developer/568725272) | [Yumiko Ishihara](https://appshunter.io/developer/1702444192) |

## What reviewers say

### スマート温湿度計

[App page](https://appshunter.io/ios/app/id6443804289)

**Features:** macOS Compatibility

**In-app purchases:** none


### MemoRing

[App page](https://appshunter.io/ios/app/memoring/id6461309259)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is スマート温湿度計 free?

スマート温湿度計 is free to download, with no in-app purchases.

### Is MemoRing free?

MemoRing is free to download, with no in-app purchases.

### Do スマート温湿度計 or MemoRing have ads?

Neither スマート温湿度計 nor MemoRing shows ads.

### Which is updated more often, スマート温湿度計 or MemoRing?

スマート温湿度計 ships an update every 6 months, and MemoRing monthly. Most recently, スマート温湿度計 was updated on September 13, 2026 and MemoRing on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*