Comparison

OPM vs DSDir

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

Head to head
About

OPM

Securely manage your passwords with an encrypted vault that stays entirely on your device. No cloud sync, no accounts, just your master password protecting your sensitive information. Features biometric unlock and a built-in password generator.

Highlights
  • On-device AES encryption
  • Master password protection
  • Biometric unlock
  • Auto-lock after inactivity
  • Built-in password generator
  • Encrypted backup and restore
  • One-tap clipboard copy
Features
Read full description

OPM is a password manager built around one rule: your vault never leaves your device. No account, no cloud sync, no analytics, no ad networks — just an encrypted vault that lives on your phone, protected by a master password only you know. I created this app for storing my passwords in one place. It's now an habit for me to update the password everytime I update it in any app or website. If you want a password manager you can actually verify is private, not just one that promises to be, OPM is built for you. KEY FEATURES - On-device AES encryption for your entire vault - Master password protects every entry — nothing is stored in the clear - Biometric unlock (Face ID / fingerprint) layered on top of your master password for fast, secure access - Auto-lock after inactivity so an idle device is never left exposed - Full vault management — add, edit, delete, and search entries - Built-in password generator for strong, unique passwords - One-tap clipboard copy for fast logins - Encrypted backup and restore using the .opm export format - No cloud sync. No account. No ad SDKs. Your vault is never transmitted anywhere, by us or anyone else. YOUR VAULT NEVER LEAVES YOUR DEVICE Most "private" apps ask you to trust a privacy policy. OPM narrows that trust down to one thing: your vault data, your entries, your master password, your notes all is encrypted and stored locally, and is never synced, backed up, or transmitted off your device. What's in your vault stays in your vault. YOUR MASTER PASSWORD, YOUR KEY Your vault is encrypted using a key derived from your master password. We never see it, store it, or transmit it anywhere because OPM has nowhere to send it. This also means your master password can't be recovered if you lose it, so choose it carefully and keep it safe. BIOMETRIC UNLOCK, WITHOUT WEAKENING SECURITY Unlock OPM quickly with Face ID or your fingerprint. Biometrics don't replace your master password, they unlock access to a key that's still derived from it, so you get convenience without a weaker vault. BUILT-IN PASSWORD GENERATOR Create strong, unique passwords for every account directly inside OPM, so you stop reusing weak ones across sites. ENCRYPTED IMPORT & EXPORT Move your vault between devices or back it up locally using the encrypted .opm format. Your data stays portable and stays yours. WHY THIS MATTERS Every cloud-synced password manager is a target: a server that, if compromised, exposes every vault it holds at once. OPM removes that target entirely. There's no account to create, no server holding your vault, and no telemetry pipeline collecting data about how you use it. Take control of your passwords with a manager built so your vault has nowhere to go but your own device.

About

DSDir

Features
Read full description

DSDir lets you connect and manage all kinds of file services the way you use a desktop. Synology NAS, SMB, WebDAV, FTP, SFTP and iCloud Drive all live on one desktop. Stop juggling a separate app for every server. DSDir is a full file manager for your NAS and servers: browse, search, upload, download, rename, move and copy files across Synology, Windows shared folders (SMB), WebDAV, FTP, SFTP and iCloud Drive, all from one desktop with multiple windows. Stream your videos and music straight from the NAS without downloading, save them to your device to enjoy offline, upload photos to your NAS, and pass files between sites in a few taps. • Desktop Mode: It opens on the desktop by default: multiple windows, a dock, and your own wallpaper (a solid color, a gradient or a picture). Drag files between windows to move or copy them, create new folders, and use an external display with your phone as the trackpad. Next time you open it, it remembers whether you were on the desktop or the list. • Copy and paste between sites: Copy or cut in one site and paste in another, in any mix of Synology, SMB, WebDAV, FTP, SFTP and iCloud Drive. You can also drag between desktop windows. A small progress bar in the bottom-right corner shows the transfer and can be cancelled any time. If you leave the app, it keeps transferring as long as the system allows, and progress also shows on the lock screen and at the top of the display. Files with the same name are both kept, never overwritten. • One list for every site: Sites are no longer grouped by type. They sit in a single list, each marked with a tag: Synology, SMB, WebDAV, FTP, SFTP or iCloud Drive. • Your sites, your order: Sort the site list by name or type, or drag sites into the order you like. Edit mode makes tidying up and removing easy. • Protocols built in-house: SMB, WebDAV, FTP and SFTP are all implemented by us, with no third-party libraries. SFTP supports password and private-key sign-in and asks you to confirm the host key on first connection. • File management: Multi-select, cut / copy / paste, rename, delete, upload, download and new folders. List and grid views with thumbnails, plus file search, sorting and grouping. • Video and music streaming: Tap a video to stream it without downloading first. Browse music by album cover and keep listening with the mini player while you browse. • Offline manager: Save music folders and videos to your device and play them without a connection. You can limit downloads to Wi-Fi. • Synology extras: QuickConnect or IP / DDNS connection, the download center (Download Station) and Synology Drive / Cloud Station sync status. • Share extension: Tap Share in other apps to send a URL or a file straight to one of your sites. • theirdrop: Send photos, videos and files from the share sheet straight to a Windows PC on the same network, with no pairing. • 10 languages: English, Japanese, Traditional and Simplified Chinese, Korean, French, Russian, Spanish, German and Portuguese. • Your site list on every device: Your site list and quick-share settings sync to your other devices through your own iCloud account. Passwords stay in the device Keychain and are never synced through iCloud. Works with: Synology NAS (DSM 6 and 7, QuickConnect, IP and DDNS), Windows shared folders, any NAS or server that offers SMB, WebDAV, FTP or SFTP (SSH), and iCloud Drive. DSDir collects no user data. All connection information stays on your own devices and in your own iCloud account.

Screenshots

OPM4 screens
DSDir4 screens

Verdict

The call

The clearest difference is price: OPM at Free against DSDir's $1.99. OPM also leads on iOS requirement (15.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

OPM is free to download; DSDir costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OPM ships an update every 3 days, DSDir weekly. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 7 level
OPM versus DSDir: the parameters behind the verdict, then further details
ParameterOPMDSDir
PriceFree — better$1.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 days — betterWeekly
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size24 MB23 MB
Age rating4+4+
DeveloperHardik ShahUSHIO FUJIMURA

In-app purchases

None

OPM

No in-app purchases

None

DSDir

No in-app purchases

Questions

Is OPM free?
OPM is free to download, with no in-app purchases.
Is DSDir free?
DSDir costs $1.99, with no in-app purchases.
Do OPM or DSDir have ads?
Neither OPM nor DSDir shows ads.
Which is updated more often, OPM or DSDir?
OPM ships an update every 3 days, and DSDir weekly. Most recently, OPM was updated on October 31, 2026 and DSDir on November 6, 2026.

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