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Install Nostrism

Download Zapstore

Download
QR code for zapstore.dev/download
  • Scan the code with your phone’s camera
  • Tap Download anyway if the browser warns about the file
  • Allow your browser to install unknown apps if Android asks
  • Open Zapstore and finish the onboarding

Open Nostrism in Zapstore

Open
QR code to open Nostrism in Zapstore
  • Scan the code to open Nostrism in Zapstore, or search for it there
  • Tap Install, and Download if Zapstore asks you to confirm the developer
  • Confirm in Android’s install dialog. Allow Zapstore to install unknown apps if Android asks

Claimed by the developer

Shino3(しのさん) cryptographically proved they hold the key that signs Nostrism. The claim is a signed proof on Nostr, tied to the certificate below.

Developer key
npub1l60d6h2uvdwa9yq0r7r2suhgrnsadcst6nsx2j03xwhxhu2cjyascejxe5
Signing certificate
b9d8e1ccf1086388acad81b26bb84c302a895153e870d47a291ad0b59ef64e38
APK checked by
relay.zapstore.devIt read the APK and found it signed with this certificate before listing the release.
Claim published
Oct 28, 2026
Valid until
Oct 27, 2028
Proof event
5d748b3c182ead1797a11f8c4b81df880ae8730dfa1c4fc3ea372eb67518f2cain relay.zapstore.dev
How trust works

Client for Nostr, the decentralized social protocol. Your timeline, hashtags, public chats and notifications, clean and comfortable.

Nostrism is a client for Nostr, the decentralized social protocol. Your timeline, hashtags, public chats and notifications, clean and comfortable.

ALL YOUR TIMELINES, SIDE BY SIDE

On tablets and foldables, Nostrism becomes a deck: Following, hashtags, chats and notifications sit next to each other in columns. Fold your phone and you get the phone layout; unfold it and you get the deck. Add and reorder columns as you like.

NOTIFICATIONS THAT MAKE SENSE

See replies, mentions, reactions, reposts and Zaps in one place. Tap a reaction notification to open the original thread with that person highlighted.

REACTIONS, THREADED

In a thread, reactions to reactions and reposts appear as a tree under the original emoji.

CUSTOM EMOJI

React and post with custom emoji. You can even make your own emoji from text and add them to your emoji list.

PUBLIC CHATS

Join public chats (NIP-28) and hang out.

STATUS

See what people you follow are up to, or listening to, on their profiles and in the status column (NIP-38).

MAKE IT YOURS

Pick three colors (background, text and accent) to build your own theme, or use themes others have shared.

AND MORE

  • Photo and video posts (NIP-96 / Blossom); location and other metadata are removed from images before upload
  • Encrypted direct messages (NIP-17)
  • Zaps (NIP-57) and payments through a connected wallet (NIP-47), confirmed every time
  • Keyword search (NIP-50)
  • Bookmarks, pinned posts and long-form articles (NIP-23)
  • Mute words and users, report (NIP-56), and collapsed posts with content warnings
  • Relay settings (NIP-65)
  • Keyboard shortcuts
  • Sign in with a private key (kept in the device's secure storage), an external signer app (NIP-55) or a remote signer (NIP-46)
  • English and Japanese

GETTING STARTED

No sign-up needed. Just create a new key in the app. Your key stays on your device and is never sent to our servers. If you lose your key, you lose the account, so keep a backup as soon as you create one.

PRIVACY

Nostrism has no analytics, ads or tracking. Public events such as posts are sent to the relays you choose and are public. See the privacy policy for details.

Summary generated by Zapstore from source.

Original description, as the developer published it.

Zap Nostrism

Zapping anonymously. Sign in to zap with your identity.

Sats go to npub1l60d6…cejxe5, the developer who signed the app’s certificate proof.

Amount in sats

Stacked in

Latest release

Oct 25, 2026

Claimed app Google servicesSource available

Includes Google Play services for translation and Firebase components. Uses ML Kit to identify language and translate text within the app.

Release notes

・時刻の表示を「経過時間 / 日時 / 日時(秒まで)」から選べるようにしました(設定 → 表示)。日時は、今日なら時刻だけ、今年なら月日と時刻を出します ・投稿にリアクションの数を出すようにしました。通信量を抑えたいときは、設定 → 表示の「リアクションの数を出す」を切れます ・NIP-05 が「_@ドメイン」の人は、ドメインだけを表示するようにしました ・アプリを開いた直後に、ホームではなく通知の画面が出ることがある不具合を直しました


ダウンロード(プレビュー配布)

  • Android: Nostrism-0.6.29-android.apk(直接インストール用) ⚠️ Play 版(クローズドテスト)とは署名が異なるため、上書き更新はできません。入れ替える場合は一度アンインストールしてください(データも消えます)。Play でテスト参加中の方は Play 版の更新をお使いください。
  • macOS: Nostrism-0.6.29-macos.dmg ⚠️ 現在未署名です。初回起動時は Finder で右クリック→開くを選択してください。
  • iOS: TestFlight(build 1481)で配信しています。

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Get Nostrism the private way

Updates checked on your device, and every release verified before it installs.

Get Zapstore for Android

  1. Tap Download APK below.Scan the code with your Android phone’s camera.
  2. If Android asks, allow your browser to install unknown apps.
  3. Open Zapstore and finish the onboarding.
Download APK

v2.0.4 · 71.2 MB · Android 10+

Verify the download

On a computer, run shasum -a 256 <the file you downloaded>. It should print: b13e01319fecf0b3ba1fd60132758bd0fa08a235836c52d44fddb412cf1b7137

If you have zsp, Zapstore’s publishing tool, zsp utils extract-apk <the file you downloaded> works too. Its hash should be the same SHA-256: b13e01319fecf0b3ba1fd60132758bd0fa08a235836c52d44fddb412cf1b7137

On the phone, AppVerifier should show this signing certificate: 99e33b0c2d07e75fcd9df7e40e886646ff667e3aa6648e1a1160b036cf2b9320

Source code All releases and notes

Get zsp

  1. Download the file for your computer.
  2. Make it executable and put it on your PATH.
  3. In your project folder, run zsp.

Have Go? This does the same:

go install github.com/zapstore/zsp/v2/cmd/zsp@latest
macOS, Apple silicon Linux, x86-64 Linux, arm64

v2.0.1 · macOS and Linux

Verify the download

On your computer, run shasum -a 256 <the file you downloaded>. It should print the SHA-256 for the one you chose.

macOS, Apple silicon · 18.6 MB 99018fb9744e5ace2b44557550dc333496239912c0e9b1137266d4922c803346

Linux, x86-64 · 23.8 MB 1ef5373f8ecd9ba63d2c3fab98abb0d31b2244a2aac31b3749fb205c7d5f5b38

Linux, arm64 · 22.1 MB e421005ee47cba58293dce4277bb784e4cfe706dbbcb8617d671629d0238be18

Source code All releases and notes