# Password 4 Pro — Lock Passcode Security!

> Secure password manager with local backup and military-grade encryption. (iPhone/iPad app by Gerinn LLC.)

- Source: https://appshunter.io/ios/app/password-4-pro/id570632076 (this page in markdown: same URL + `.md`)
- Developer: [Gerinn LLC](https://appshunter.io/developer/537042831)
- Category: Utilities, Business
- Price: Free with in-app purchases
- Rating: 2.50/5 from 2 App Store ratings · 149 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 13 MB
- Languages: Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan), American English, Korean
- Released: 2013-03-22
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/password-4-pro/id570632076/reviews.md

## What is Password 4 Pro?

******* Password Management Expert *******

Too many password to remember? 
Worried about the safety of your password?
With Password 4, there are no more such problems!


We do not store any password of users’. Instead, the password backup will be done by Documents App. In the first generation product, we have collected many feedbacks from users. And in Password 4, we have updated the interface and make a brand new password management tool.  

We have applied military-level encryption algorithm and nobody may crack the password for the database exported or the data backed up in Documents App. You only need to remember a simple 4 digit password. 

Functions:
1. The program itself will not connect to the internet while local back up is in operation. 
2. Local data backup 
3. Secure notebook to record private words
4. Save image information including password security card, credit cards, etc.
5. Customize categories 
6. Generate random password automatically
7. Customize the format of classified information.

Features:
• Biometric Unlock
• Backstage anti-screenshot
• Optimized for iOS 17

## Key features

- Local data backup
- Secure notebook
- Save image information
- Generate random passwords
- Biometric unlock
- Anti-screenshot

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Quarterly | $1.99 | per 3 months |
| Annual | $5.99 | per year |


## Recent user reviews (10 of 149)

All indexed reviews: https://appshunter.io/ios/app/password-4-pro/id570632076/reviews.md

### 1/5 — 前の方がまだましだ💢

*2026-03-11, version 4.0.6*

パスワード表のアップデートされたか何だかで以前のアプリと見た目が変わったのは勝手だが、此方がパスワードをわかりやすく書き込みしといたら、アプリ仕様が変わったと思いきや、こっちが書き込んで無いスペル迄、文字化けってやつかは知らんが、醜くてたまらねえ💢💢
運営さんただ作りゃ良いってもんじゃねえんだよ❗️
作ったら自分の携帯にインストールして文字化けしないかくらい確認してから市場に出してもらいたいんだがな💢
大至急不具合箇所を修正されたし。
使いにくくて仕方ないんだよ。

### 1/5 — 有待加強

*2026-01-28, version 4.0.6*

輸出備份檔案，根本沒有備份。而且檔案還有密碼，密碼也不是鎖定密碼，天～

### 5/5 — 最高のパスワードアプリ

*2025-07-14, version 4.0.6*

たくさん登録しても検索で機能で、すぐに見つかります。超おすすめのシンプルなパスワードアプリだと思います。

### 1/5 — バックアップできない

*2025-06-06, version 4.0.6*

バックアップ機能があり、テキストデータで吐き出せるがパスワード保護されており、そのパスワード情報がどこにもない。
アップデートで記載できる情報数も減り、別端末で情報を共有もできないので使いづらい。

### 1/5 — 新版難用

*2025-05-30, version 4.0.6*

更新後，舊的資訊都亂掉，圖片消失了

### 1/5 — ログインできない

*2025-05-14, version 4.0.6*

ログインできなくなった。

### 2/5 — ロック画面解除パスワード

*2025-01-08, version 4.0.6*

新しいpassword4にしたら、ロック画面解除パスワードが変わってしまった。
顔認証で解除はできているが、これでは困る。顔認識に不具合が生じたら使えなくなる不安がある。

### 1/5 — 4にバグ？

*2024-10-03, version 4.0.6*

4を使って最近気ついたが、アプリ閉じて短い時間なら誰でも簡単に開けます。全く顔認証をスルーしています。ダメでは？

### 1/5 — 最悪

*2024-09-04, version 4.0.6*

アプデで以前データが消去された。
マジで最悪（怒）

### 1/5 — 買斷就是買斷

*2024-07-01, version 4.0.6*

不然幹嘛叫買斷？

就算贈送一年的使用權利

也跟之前的購買的意向不一樣

請處理之前已購買的客戶

## Frequently asked questions about Password 4 Pro

### What does Password 4 Pro do?

This app acts as a password management expert, helping you remember and secure your passwords. It offers a secure notebook for private words, allows you to save image information like credit cards, and generates random passwords automatically. It utilizes military-level encryption for data protection.

### How does the app ensure password safety?

The app employs military-level encryption algorithms to protect your data. It does not store your passwords directly; instead, backups are handled by the Documents App. You only need to remember a single 4-digit password to access your encrypted data.

### Is Password 4 Pro free to use?

The application is free to download and use, but it does offer in-app purchases and contains advertisements. Specific features or advanced functionalities may require these in-app purchases.

### What devices is Password 4 Pro compatible with?

The description mentions that the app is optimized for iOS 17. While specific device models are not listed, it is designed for Apple's iOS operating system.

### Can I use this app to store credit card details?

Yes, the app allows you to save image information, which includes details like password security cards and credit cards. This feature, combined with its strong encryption, helps keep your financial information secure.

## Version history (last 5 releases)

### 4.0.6 — 2024-02-18

1. Added account data deletion function.
2. Optimize localization.
3. Optimize input content interaction.

### 4.0.5 — 2024-02-06

Added the ability to import data from Passsword 3’s iCloud backup.

### 4.0.4 — 2024-02-05

1. Localized Content Optimization
2. Modify Application Icon

### 4.0.3 — 2024-02-02

Optimize the multi-language localization switch function.
Optimize the layout for large fonts.
Fix localization errors.
Correct the display of software version numbers.

### 4.0.2 — 2024-02-01

1. Enhance language localization.
2. Fix the issue of additional categories caused by inconsistent names between new and old version classifications.
3. Resolve the problem of unsuccessful free membership claim for old version users.

## Apps similar to Password 4 Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [My Eyes Only Password Manager](https://appshunter.io/ios/app/my-eyes-only-password-manager/id486403498) | 4.8 (4,203) | Free | Utilities |
| [Norton Password Manager](https://appshunter.io/ios/app/norton-password-manager/id504750161) | 4.5 (40,778) | Free | Utilities |
| [Password Manager - Secure](https://appshunter.io/ios/app/password-manager-secure/id934286423) | 4.6 (752) | Free | Utilities |
| [Password Manager. Login Vault](https://appshunter.io/ios/app/password-manager-login-vault/id1341464587) | 4.6 (291) | Free | Utilities |
| [Authenticator Password Manager](https://appshunter.io/ios/app/authenticator-password-manager/id849132027) | 3.7 (56) | Free | Utilities |
| [App Lock, Hide Passwords Apps](https://appshunter.io/ios/app/app-lock-hide-passwords-apps/id1614510749) | 4.6 (9,720) | Free | Utilities |

## More apps by Gerinn LLC

- [Truth or Dare Lite !](https://appshunter.io/ios/app/truth-or-dare-lite/id568369010)
- [Truth or Dare Pro ！](https://appshunter.io/ios/app/truth-or-dare-pro/id573792593)
- [Password 4 Lite](https://appshunter.io/ios/app/password-4-lite/id626623288)
- [Time Timer Lite - Colorful World](https://appshunter.io/ios/app/time-timer-lite-colorful-world/id660641615)
- [Text Pictures Lite - Including Amazing Text Keyboard](https://appshunter.io/ios/app/text-pictures-lite-including-amazing-text-keyboard/id663687070)

All apps by Gerinn LLC: https://appshunter.io/developer/537042831

## Related topics

[4dxos](https://appshunter.io/ios/topics/4dxos)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*