Comparison

OSH vs Shellter

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

OSH

Features
Read full description

OSH turns your iPhone into a hardware-backed approver for zero-trust SSH access. Instead of long-lived SSH keys scattered across laptops, your team's gateway issues short-lived SSH certificates only after a human approves each request. OSH is where that approval happens โ€” on a device you carry, protected by Face ID and the Secure Enclave. HOW IT WORKS โ€ข Enroll your device by scanning the gateway's QR code. โ€ข When someone requests SSH access, OSH shows you who, what, and where. โ€ข Approve or deny with Face ID. Your approval is signed by a key that lives only in the Secure Enclave. โ€ข The gateway issues a short-lived certificate โ€” no standing keys, no shared secrets. WHY IT'S SECURE โ€ข The signing key is generated inside the Secure Enclave and is non-exportable โ€” it can never leave your iPhone. โ€ข Every approval requires biometric authentication. โ€ข OSH connects only to the gateway you configure. It has no analytics, no trackers, no ads, and no third-party SDKs. FOR TEAMS โ€ข Role-aware: signers, admins, and root see the controls appropriate to them. โ€ข Review access rules, approval history, and gateway logs from the app. OSH requires a compatible zero-trust SSH gateway to connect to. If your organization doesn't run one yet, contact us at ad@openlay.com.

About

Shellter

Features
Read full description

Shellter is an SSH, SFTP and FTP client that keeps everything on your phone. There is no account to create, nothing syncs, and the app sends no telemetry. It opens connections to the servers you type in, and makes no other network request. That is the whole product. A REAL TERMINAL โ€” An interactive shell rendered with xterm, not a toy console. It follows the keyboard, resizes the remote PTY when you rotate the phone, and keeps 10,000 lines of scrollback FILES WITHOUT A SECOND LOGIN โ€” Browse, upload, download, rename, delete and create folders over SFTP or FTP. Open the file browser from inside a live SSH session and it reuses that connection instead of opening another one. A download never silently overwrites a file you already have. HOST KEYS, PINNED AND CHECKED โ€” The server's host key is pinned the first time you connect and compared on every reconnect. If it does not match, the connection stops BEFORE authentication โ€” your password is never sent to a server that failed the check. WHERE YOUR SECRETS LIVE โ€” Passwords and private keys go into the iOS Keychain, hardware-backed where supported, stored "this device only" so they cannot be restored onto another phone. HONEST ABOUT PROTOCOLS โ€” SSH and SFTP are verified by host-key pinning. FTPS is encrypted but does not verify the certificate. FTP is cleartext. Prefer SFTP.

Screenshots

OSH4 screens
Shellter4 screens

Verdict

The call

The clearest difference is device support: Shellter at 3 against OSH's 1. Shellter also leads on iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

Scorecard2 real differences ยท 4 level
OSH versus Shellter: the parameters behind the verdict, then further details
ParameterOSHShellter
PriceFreeFree
Update frequencyWeeklyโ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad, iPod โ€” better
Requires iOS18.015.0 โ€” better
Further details โ€” not scored
Size4 MB21 MB
Age rating4+4+
DeveloperOpen layer technologies L.L.C S.O.CBlocify LLC

In-app purchases

None

OSH

No in-app purchases

None

Shellter

No in-app purchases

Questions

Is OSH free?
OSH is free to download, with no in-app purchases.
Is Shellter free?
Shellter is free to download, with no in-app purchases.
Do OSH or Shellter have ads?
Neither OSH nor Shellter shows ads.

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