# コンタクト交換リマインダー vs Lency

The clearest difference is in-app purchases: コンタクト交換リマインダー at none against Lency's 1. コンタクト交換リマインダー also leads on device support (3 vs 1) and iOS requirement (12.0 vs 18.0). Lency's advantage is update cadence (every 2 months vs every 35 months). On price and ads there is nothing between them.

Both are free to download. Lency sells 1 in-app purchase, starting at $0.99 per month. コンタクト交換リマインダー asks for nothing beyond the download.

コンタクト交換リマインダー ships an update every 35 months, Lency every 2 months. The most recent releases landed on October 9, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | コンタクト交換リマインダー | Lency |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 35 months | **Every 2 months** |
| Size | 36 MB | 10 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Tomoki Yabuuchi](https://appshunter.io/developer/1367124699) | [Shogo Matsumoto](https://appshunter.io/developer/1878990313) |

## What reviewers say

### コンタクト交換リマインダー

[App page](https://appshunter.io/ios/app/id1434428236)

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

**In-app purchases:** none


### Lency

[App page](https://appshunter.io/ios/app/lency/id6772739077)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $0.99 | per month |


## Frequently asked questions

### Is コンタクト交換リマインダー free?

コンタクト交換リマインダー is free to download, with no in-app purchases.

### Is Lency free?

Lency is free to download, with in-app purchases available.

### Do コンタクト交換リマインダー or Lency have ads?

Both コンタクト交換リマインダー and Lency show ads.

### Which is updated more often, コンタクト交換リマインダー or Lency?

コンタクト交換リマインダー ships an update every 35 months, and Lency every 2 months. Most recently, コンタクト交換リマインダー was updated on October 9, 2026 and Lency on October 5, 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.*