# My Number Card Check App vs SecondLoop

The clearest difference is iOS requirement: My Number Card Check App at 18.0 against SecondLoop's 26.2. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | My Number Card Check App | SecondLoop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/my-number-card-check-app/id6557056813/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 31.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | — |
| Size | 9 MB | 11 MB |
| Requires iOS | **18.0** | 26.2 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [デジタル庁](https://appshunter.io/developer/1353779871) | [Tetsuya Takaoka](https://appshunter.io/developer/357418783) |

## What reviewers say

### My Number Card Check App

[App page](https://appshunter.io/ios/app/my-number-card-check-app/id6557056813)

This app scans and reads the IC chip of a My Number Card to verify personal data. It's designed for businesses and local government to confirm the identity of customers and residents.

**Highlights:** Scan My Number Card IC chip, Read personal data, Verify name and personal information, Identity verification for businesses, Identity verification for local government

**In-app purchases:** none

**What reviewers like**

- 👍 Can confirm registration details
- 👍 Can be used by individuals
- 👍 Convenient to not carry card
- 👍 Easy to confirm registration
- 👍 Simple and easy to use

**What reviewers complain about**

- 🐛 Difficult to understand usage
- 🐛 Registration is difficult
- 🐛 Errors during registration
- 🐛 Birthday input format unclear
- 🐛 Reading accuracy issues

**Reported bugs**

- Errors during registration
- Birthday input format issue
- Reading accuracy problems
- Cannot read My Number Card
- Cannot proceed after reading

**Requested features**

- Make PIN settings optional
- Add English language support
- Improve birthday input clarity
- Provide clearer usage instructions
- Allow history deletion


### SecondLoop

[App page](https://appshunter.io/ios/app/secondloop/id6758907063)

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

**In-app purchases:** none


## Frequently asked questions

### Is My Number Card Check App free?

My Number Card Check App is free to download, with no in-app purchases.

### Is SecondLoop free?

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

### Do My Number Card Check App or SecondLoop have ads?

Neither My Number Card Check App nor SecondLoop shows ads.

### Which is updated more often, My Number Card Check App or SecondLoop?

My Number Card Check App ships an update every 3 weeks, and SecondLoop every 3 weeks. Most recently, My Number Card Check App was updated on October 14, 2026 and SecondLoop on October 16, 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.*