# 単位換算電卓 vs ID期限リマインダー

The clearest difference is in-app purchases: 単位換算電卓 at none against ID期限リマインダー's 1. 単位換算電卓 also leads on ads (none vs shown) and update cadence (monthly vs every 3 months). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. ID期限リマインダー sells 1 one-off in-app purchase. 単位換算電卓 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.0 for 単位換算電卓 against 3.0 for ID期限リマインダー. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

単位換算電卓 ships an update monthly, ID期限リマインダー every 3 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 単位換算電卓 | ID期限リマインダー |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/id1548442583/reviews) | [3.0 (1 ratings)](https://appshunter.io/ios/app/id/id6754081427/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 7 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sakae Ichikawa](https://appshunter.io/developer/1548442585) | [Yasuhiro Hamada](https://appshunter.io/developer/1825750232) |

## What reviewers say

### 単位換算電卓

[App page](https://appshunter.io/ios/app/id1548442583)

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

**In-app purchases:** none


### ID期限リマインダー

[App page](https://appshunter.io/ios/app/id/id6754081427)

Manage expiration dates for important documents like passports and driver's licenses. This app prioritizes privacy with offline operation and no personal data collection. Receive timely notifications and use convenient widgets to stay informed.

**Highlights:** Offline operation, No personal data collection, Template-based registration, Urgency color coding, Smart notification system, Lock and home screen widgets, Ad removal option

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is 単位換算電卓 free?

単位換算電卓 is free to download, with no in-app purchases.

### Is ID期限リマインダー free?

ID期限リマインダー is free to download, with in-app purchases available.

### Which has better reviews, 単位換算電卓 or ID期限リマインダー?

単位換算電卓 and ID期限リマインダー are both rated 3.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do 単位換算電卓 or ID期限リマインダー have ads?

ID期限リマインダー shows ads; 単位換算電卓 does not.

### Which is updated more often, 単位換算電卓 or ID期限リマインダー?

単位換算電卓 ships an update monthly, and ID期限リマインダー every 3 months. Most recently, 単位換算電卓 was updated on November 3, 2026 and ID期限リマインダー on October 30, 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.*