---
title: "2FA Authenticator (2FAS) - Reviews, Revenue and Downloads in Japan | Apple App Store"
description: "2FASは、二要素認証（または多要素認証）を有効にして、あなたの身元を確認し、アカウントに安全にログインするための最も簡単な方法です。これにより、個人データやパスワードをサイバー攻撃から保護することができます。すべてこのアプリ1つで、しかも100%無料です！   世界で最も安全で、プライバシーに配慮したシンプルな二要素認証（2FA、Two-Factor Authentication）アプリです。 "
---

# 2FA Authenticator (2FAS) — Japan
> #1 Rated 2FA Authenticator

![2FA Authenticator (2FAS) App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/47/ed/3a/47ed3ae5-8177-354f-66b0-0c37bc8da739/AppIcon-0-0-1x_U007epad-0-1-0-85-220.png/434x0w.png)

**Developer:** [Two Factor Authentication Service](https://apptail.io/developer/two-factor-authentication-service-qzwb) (United States)
**Category:** Productivity
**Rating:** 4.7/5 (255 ratings)
**Price:** Free
**Bundle ID:** com.twofas.org
**Store:** Apple App Store
**Country:** Japan
**Version:** 5.4.2 (released 2026-03-18)
**Original Release:** 2017-08-04
**Languages:** Indonesian, Turkish, Greek (modern), German, Japanese, French, Polish, Ukrainian, Swedish, Chinese, Italian, English, Dutch, Portuguese, Spanish

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/jp/app/app/id1217793794)
**AppTail Page:** [https://apptail.io/app/2fa-authenticator-2fas-jDl/japan](https://apptail.io/app/2fa-authenticator-2fas-jDl/japan)

## 2FA Authenticator (2FAS) Description
2FASは、二要素認証（または多要素認証）を有効にして、あなたの身元を確認し、アカウントに安全にログインするための最も簡単な方法です。これにより、個人データやパスワードをサイバー攻撃から保護することができます。すべてこのアプリ1つで、しかも100%無料です！ 

世界で最も安全で、プライバシーに配慮したシンプルな二要素認証（2FA、Two-Factor Authentication）アプリです。

セキュリティ:
・認証コードの簡単な復元: バックアップを使って認証コードを簡単に復元できます。
・アプリ保護の追加: パスコードや生体認証でアプリの保護を追加できます。
・オープンソース: 2FASはオープンソースで、透明性が高く、コミュニティ主導で開発されています。

シンプル:
・デバイス間の同期: 2FASはあなたのモバイルデバイス間で同期します。
・シンプルなインターフェース: シンプルさを追求したインターフェースです。
・ワンタップ認証: 2FASブラウザー拡張機能でワンタップ認証が可能です。
・多言語サポート: 多言語に対応しています。
・セットアップとサポートのためのクイックガイド: 簡単に設定できるようにガイドとサポートがあります。

プライバシー:
・オフラインでの動作: 2FASはオフラインでも動作します。
・パスワードやメタデータの保存なし: 2FASはパスワードやメタデータを一切保存しません。
・100%匿名での利用が可能: アカウント登録は不要で、完全に匿名で使用できます。

あなたのデータを守るのはまだ間に合います。TOTPとHOTPアルゴリズムでオンラインアカウントやサービスを今すぐ保護しましょう。 

今日から2FAS認証アプリを使い始めましょう！

ご質問があれば、Discordまでご連絡ください: 

2FASについて詳しくはこちら: 
• Check our GitHub repository: 
• Visit our website at: 
• Follow us on X: 
• Subscribe on YouTube: 

## 2FA Authenticator (2FAS) Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/92/d7/f5/92d7f58a-96a4-2a10-1e27-98e8618911e7/main1.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/78/2d/49/782d4982-b923-d524-4e77-5942a1f7d051/main2.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/71/42/73/71427356-e8ff-f93b-56a9-a3b791dcfb8d/main3.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/53/8a/31/538a31ea-4790-da65-c1cf-e51f7f09208e/backups.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/7c/99/a3/7c99a311-5b95-eeea-4121-47eb84853d84/nexttoken.png/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/19/23/34/19233459-3af7-1bef-9127-9fe9eaf7f59c/widgets.png/1242x2688.png)

## 2FA Authenticator (2FAS) Rating Breakdown in Japan
- 5 stars: 209 (82%)
- 4 stars: 25 (10%)
- 3 stars: 10 (4%)
- 2 stars: 1 (0%)
- 1 stars: 10 (4%)

## 2FA Authenticator (2FAS) Reviews in Japan

### ****- "バックアップ機能が優秀"
たの2fasアプリも使っていたが、バックアップ機能が難点だった。端末ごとに設定したものをすべて一つにまとめる事ができるのがこのアプリ。たた、唯一わかりにくいのはパソコンの拡張機能。あれはなんだ。
-- kanrikyoku, 2024-12-16

### ***** "非常に優秀なアプリです"
オープンソースで非常に安全性が高く、もちろん無料で使用できます。最近authyが2度目のセキュリティ事故を起こしたので、こちらに引越してきました。グーグルドライブやicloudに暗号化されたバックアップがとれますので端末が故障し詰む事も有りません。また機種変更も容易です。日本語版あれば最強になれるかと。
-- ジェネラルss, 2024-08-13

### ****- "日本語をサポートして欲しいです"
いいアプリだが日本語対応してないこれは残念なことです
-- add medical, 2024-06-11

### ***-- "Desktop app is preferable"
I have been using it on my iPhone for a while, all seems good until I start trying it on MacOS. The browser extension only works when it detects the text filed on web page, it maybe ok for some users, but for those who needs to input 2FA code in the app other than web browser, it is useless. 

So, 5 stars for iOS app, 1 star for browser extension. Avg 3 stars
-- Erick.Chan, 2024-01-05

### *---- "You can join, but you can’t leave."
The app allows you to import tokens from other authentication apps with ease, but does not allow you to export your tokens to anything except their own 2FAS clients on other platforms.

If you want to migrate your tokens to another app, you must…

1. Export their proprietary file.
2. Modify the extension of that file to a readable format.
3. Dig through the code and learn how to distinguish every individual token’s account and secret.
4. Manually enter every token’s information into the app you wish to migrate to. This can easily take a day if you have a lot of tokens.
5. Pray that actually works.

DO NOT USE THIS APP IF YOU WANT AGENCY OVER YOUR TOKENS. Other apps are just as secure, but will still allow you to export your tokens if you wish to leave.
-- エッギー, 2023-07-17

[View all 2FA Authenticator (2FAS) reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)


## 2FA Authenticator (2FAS) Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Free | United Kingdom | Productivity | #36 |
| Top Free | Germany | Productivity | #75 |
| Top Free | Austria | Productivity | #111 |
| Top Free | Portugal | Productivity | #140 |
| Top Free | Spain | Productivity | #166 |
| Top Free | Nigeria | Productivity | #173 |
| Top Free | Switzerland | Productivity | #174 |
| Top Free | Australia | Productivity | #175 |
| Top Free | Canada | Productivity | #205 |
| Top Free | Czechia | Productivity | #213 |
| Top Free | Denmark | Productivity | #234 |
| Top Free | Kuwait | Productivity | #252 |
| Top Free | Netherlands | Productivity | #254 |
| Top Free | Sweden | Productivity | #270 |
| Top Free | France | Productivity | #280 |
| Top Free | Belgium | Productivity | #280 |
| Top Free | Poland | Productivity | #293 |
| Top Free | Hungary | Productivity | #295 |
| Top Free | New Zealand | Productivity | #310 |
| Top Free | Ireland | Productivity | #342 |
| Top Free | United States | Productivity | #347 |
| Top Free | Belarus | Productivity | #367 |
| Top Free | Romania | Productivity | #379 |
| Top Free | Russia | Productivity | #380 |
| Top Free | Italy | Productivity | #399 |
| Top Free | Thailand | Productivity | #402 |
| Top Free | Chile | Productivity | #452 |
| Top Free | Taiwan | Productivity | #459 |
| Top Free | Philippines | Productivity | #477 |
| Top Free | Finland | Productivity | #486 |
| Top Free | Colombia | Productivity | #490 |
| Top Free | Pakistan | Productivity | #494 |
| Top Free | United Kingdom | Overall | #496 |

## 2FA Authenticator (2FAS) Discovered Keywords
- 2fa authenticator 2fas

## Apps Similar to 2FA Authenticator (2FAS)
- [LastPass Authenticator](https://apptail.io/app/lastpass-authenticator-zzi/japan)
- [EMURGO’s Yoroi Cardano Wallet](https://apptail.io/app/emurgos-yoroi-cardano-wallet-lFq/japan)
- [Proton Drive: Privacy Storage](https://apptail.io/app/proton-drive-privacy-storage-gev/japan)
- [Proton Calendar: Secure Events](https://apptail.io/app/proton-calendar-secure-events-Stv/japan)
- [Authenticator App](https://apptail.io/app/authenticator-app-vfx/japan)
- [Authenticator App+](https://apptail.io/app/authenticator-app-ZPB/japan)
- [The Authenticator‎ App](https://apptail.io/app/the-authenticator-app-DoD/japan)
- [Yubico Authenticator](https://apptail.io/app/yubico-authenticator-TgO/japan)
- [Authenticator App - 2FA](https://apptail.io/app/authenticator-app-2fa-IOpk/japan)
- [Proton Pass - Password Manager](https://apptail.io/app/proton-pass-password-manager-yxSm/japan)

## 2FA Authenticator (2FAS) Available In
- [United States](https://apptail.io/app/2fa-authenticator-2fas-jDl/united-states)
- [Germany](https://apptail.io/app/2fa-authenticator-2fas-jDl/germany)
- [Australia](https://apptail.io/app/2fa-authenticator-2fas-jDl/australia)
- [United Kingdom](https://apptail.io/app/2fa-authenticator-2fas-jDl/united-kingdom)
- [Canada](https://apptail.io/app/2fa-authenticator-2fas-jDl/canada)
- [France](https://apptail.io/app/2fa-authenticator-2fas-jDl/france)
- [Brazil](https://apptail.io/app/2fa-authenticator-2fas-jDl/brazil)
- [Netherlands](https://apptail.io/app/2fa-authenticator-2fas-jDl/netherlands)
- [Spain](https://apptail.io/app/2fa-authenticator-2fas-jDl/spain)
- [Nigeria](https://apptail.io/app/2fa-authenticator-2fas-jDl/nigeria)
- [Switzerland](https://apptail.io/app/2fa-authenticator-2fas-jDl/switzerland)
- [Italy](https://apptail.io/app/2fa-authenticator-2fas-jDl/italy)
- [South Africa](https://apptail.io/app/2fa-authenticator-2fas-jDl/south-africa)
- [India](https://apptail.io/app/2fa-authenticator-2fas-jDl/india)
- [Poland](https://apptail.io/app/2fa-authenticator-2fas-jDl/poland)
- [China](https://apptail.io/app/2fa-authenticator-2fas-jDl/china)
- [Austria](https://apptail.io/app/2fa-authenticator-2fas-jDl/austria)
- [Vietnam](https://apptail.io/app/2fa-authenticator-2fas-jDl/vietnam)
- [Belgium](https://apptail.io/app/2fa-authenticator-2fas-jDl/belgium)
- [Thailand](https://apptail.io/app/2fa-authenticator-2fas-jDl/thailand)
- [Russia](https://apptail.io/app/2fa-authenticator-2fas-jDl/russia)
- [Mexico](https://apptail.io/app/2fa-authenticator-2fas-jDl/mexico)
- [Sweden](https://apptail.io/app/2fa-authenticator-2fas-jDl/sweden)
- [New Zealand](https://apptail.io/app/2fa-authenticator-2fas-jDl/new-zealand)
- [Romania](https://apptail.io/app/2fa-authenticator-2fas-jDl/romania)
- [Ukraine](https://apptail.io/app/2fa-authenticator-2fas-jDl/ukraine)
- [Hungary](https://apptail.io/app/2fa-authenticator-2fas-jDl/hungary)
- [Portugal](https://apptail.io/app/2fa-authenticator-2fas-jDl/portugal)
- [Philippines](https://apptail.io/app/2fa-authenticator-2fas-jDl/philippines)
- [Denmark](https://apptail.io/app/2fa-authenticator-2fas-jDl/denmark)
- [Greece](https://apptail.io/app/2fa-authenticator-2fas-jDl/greece)
- [Indonesia](https://apptail.io/app/2fa-authenticator-2fas-jDl/indonesia)
- [Czechia](https://apptail.io/app/2fa-authenticator-2fas-jDl/czechia)
- [Singapore](https://apptail.io/app/2fa-authenticator-2fas-jDl/singapore)
- [Norway](https://apptail.io/app/2fa-authenticator-2fas-jDl/norway)
- [Japan](https://apptail.io/app/2fa-authenticator-2fas-jDl/japan)
- [United Arab Emirates](https://apptail.io/app/2fa-authenticator-2fas-jDl/united-arab-emirates)
- [Colombia](https://apptail.io/app/2fa-authenticator-2fas-jDl/colombia)
- [Pakistan](https://apptail.io/app/2fa-authenticator-2fas-jDl/pakistan)
- [Malaysia](https://apptail.io/app/2fa-authenticator-2fas-jDl/malaysia)
- [Türkiye](https://apptail.io/app/2fa-authenticator-2fas-jDl/turkey)
- [Argentina](https://apptail.io/app/2fa-authenticator-2fas-jDl/argentina)
- [Chile](https://apptail.io/app/2fa-authenticator-2fas-jDl/chile)
- [Hong Kong SAR China](https://apptail.io/app/2fa-authenticator-2fas-jDl/hong-kong)
- [Slovakia](https://apptail.io/app/2fa-authenticator-2fas-jDl/slovakia)
- [Taiwan](https://apptail.io/app/2fa-authenticator-2fas-jDl/taiwan)
- [Ireland](https://apptail.io/app/2fa-authenticator-2fas-jDl/ireland)
- [Saudi Arabia](https://apptail.io/app/2fa-authenticator-2fas-jDl/saudi-arabia)
- [Bulgaria](https://apptail.io/app/2fa-authenticator-2fas-jDl/bulgaria)
- [Egypt](https://apptail.io/app/2fa-authenticator-2fas-jDl/egypt)
- [Slovenia](https://apptail.io/app/2fa-authenticator-2fas-jDl/slovenia)
- [Finland](https://apptail.io/app/2fa-authenticator-2fas-jDl/finland)
- [South Korea](https://apptail.io/app/2fa-authenticator-2fas-jDl/south-korea)
- [Lithuania](https://apptail.io/app/2fa-authenticator-2fas-jDl/lithuania)
- [Croatia](https://apptail.io/app/2fa-authenticator-2fas-jDl/croatia)
- [Israel](https://apptail.io/app/2fa-authenticator-2fas-jDl/israel)
- [Ghana](https://apptail.io/app/2fa-authenticator-2fas-jDl/ghana)
- [Peru](https://apptail.io/app/2fa-authenticator-2fas-jDl/peru)
- [Luxembourg](https://apptail.io/app/2fa-authenticator-2fas-jDl/luxembourg)
- [Kazakhstan](https://apptail.io/app/2fa-authenticator-2fas-jDl/kazakhstan)
- [Estonia](https://apptail.io/app/2fa-authenticator-2fas-jDl/estonia)
- [Dominican Republic](https://apptail.io/app/2fa-authenticator-2fas-jDl/dominican-republic)
- [Cyprus](https://apptail.io/app/2fa-authenticator-2fas-jDl/cyprus)
- [Latvia](https://apptail.io/app/2fa-authenticator-2fas-jDl/latvia)
- [Kenya](https://apptail.io/app/2fa-authenticator-2fas-jDl/kenya)
- [Sri Lanka](https://apptail.io/app/2fa-authenticator-2fas-jDl/sri-lanka)
- [Azerbaijan](https://apptail.io/app/2fa-authenticator-2fas-jDl/azerbaijan)
- [Uganda](https://apptail.io/app/2fa-authenticator-2fas-jDl/uganda)
- [Belarus](https://apptail.io/app/2fa-authenticator-2fas-jDl/belarus)
- [Kuwait](https://apptail.io/app/2fa-authenticator-2fas-jDl/kuwait)
- [Ecuador](https://apptail.io/app/2fa-authenticator-2fas-jDl/ecuador)
- [Nepal](https://apptail.io/app/2fa-authenticator-2fas-jDl/nepal)
- [Namibia](https://apptail.io/app/2fa-authenticator-2fas-jDl/namibia)
- [Uruguay](https://apptail.io/app/2fa-authenticator-2fas-jDl/uruguay)
- [Senegal](https://apptail.io/app/2fa-authenticator-2fas-jDl/senegal)
- [Lebanon](https://apptail.io/app/2fa-authenticator-2fas-jDl/lebanon)
- [Jamaica](https://apptail.io/app/2fa-authenticator-2fas-jDl/jamaica)
- [Algeria](https://apptail.io/app/2fa-authenticator-2fas-jDl/algeria)
- [Panama](https://apptail.io/app/2fa-authenticator-2fas-jDl/panama)
- [Malta](https://apptail.io/app/2fa-authenticator-2fas-jDl/malta)
- [Armenia](https://apptail.io/app/2fa-authenticator-2fas-jDl/armenia)
- [Qatar](https://apptail.io/app/2fa-authenticator-2fas-jDl/qatar)
- [Uzbekistan](https://apptail.io/app/2fa-authenticator-2fas-jDl/uzbekistan)
- [Jordan](https://apptail.io/app/2fa-authenticator-2fas-jDl/jordan)
- [Bahrain](https://apptail.io/app/2fa-authenticator-2fas-jDl/bahrain)
- [North Macedonia](https://apptail.io/app/2fa-authenticator-2fas-jDl/north-macedonia)
- [Oman](https://apptail.io/app/2fa-authenticator-2fas-jDl/oman)
- [Tunisia](https://apptail.io/app/2fa-authenticator-2fas-jDl/tunisia)
- [Angola](https://apptail.io/app/2fa-authenticator-2fas-jDl/angola)
- [Iceland](https://apptail.io/app/2fa-authenticator-2fas-jDl/iceland)
- [Mali](https://apptail.io/app/2fa-authenticator-2fas-jDl/mali)
- [Paraguay](https://apptail.io/app/2fa-authenticator-2fas-jDl/paraguay)
- [Suriname](https://apptail.io/app/2fa-authenticator-2fas-jDl/suriname)
- [Belize](https://apptail.io/app/2fa-authenticator-2fas-jDl/belize)
- [Honduras](https://apptail.io/app/2fa-authenticator-2fas-jDl/honduras)
- [Mauritius](https://apptail.io/app/2fa-authenticator-2fas-jDl/mauritius)
- [Cayman Islands](https://apptail.io/app/2fa-authenticator-2fas-jDl/cayman-islands)
- [Brunei](https://apptail.io/app/2fa-authenticator-2fas-jDl/brunei)
- [Bermuda](https://apptail.io/app/2fa-authenticator-2fas-jDl/bermuda)
- [Macao SAR China](https://apptail.io/app/2fa-authenticator-2fas-jDl/macau)
- [Madagascar](https://apptail.io/app/2fa-authenticator-2fas-jDl/madagascar)
- [Grenada](https://apptail.io/app/2fa-authenticator-2fas-jDl/grenada)

---

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