Comparison

iPGMail vs Docker Guard

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

Head to head
About

iPGMail

This app simplifies PGP encryption for iOS users, allowing easy sending and receiving of encrypted emails and files. It supports the OpenPGP standard, key management, and various import methods for keys and messages.

Highlights
  • PGP encryption and decryption
  • Send and receive encrypted emails
  • Encrypt and decrypt files
  • Create and manage PGP keys
  • Import keys from various sources
  • Supports OpenPGP standard
Features
Currently charting
Read full description

iPGMail is a complete OpenPGP client for iPhone and iPad. Encrypt, decrypt, and digitally sign email and files using the same RFC 9580 / RFC 4880 standard you already use with GnuPG, Mailvelope, Thunderbird, ProtonMail's PGP exports, and any other OpenPGP-compatible tool. Bring your existing PGP identity to iOS or generate a new one in the app. Your private keys are stored in a private local database with the highest data-protection class and are unlocked only by Touch ID or Face ID. All cryptography runs locally — your keys and message content never leave your device. CRYPTO & INTEROPERABILITY • OpenPGP v4 and v6 (RFC 9580 / RFC 4880, RFC 6637) — fully interoperable with GnuPG, Mailvelope, Thunderbird, ProtonMail PGP exports, and any other compliant tool • Public-key algorithms: RSA, DSA, ECDSA, EdDSA (Ed25519, Ed448), ECDH (Curve25519, X448) • Symmetric ciphers including AES-256, with modern AEAD encryption on PGP v6 (SEIPDv2) messages • PGP/MIME for encrypted email; standard ASCII-armored output for any plain-text channel • Detached and inline signatures; sign-only mode for authenticated but readable messages • Symmetric (password-based) file encryption • Encrypt to multiple recipients in a single message EMAIL • Send encrypted email directly from the app via SMTP — works with iCloud, Gmail, Outlook / Hotmail, Yahoo, AOL, Fastmail, GMX, Yandex, mail.ru, QQ, Comcast, and any custom SMTP server • Google OAuth2 for password-free Gmail authentication • Reply with quoted plaintext ("> " prefix) so encrypted threads read like normal email • Or hand off to your default mail app via the standard iOS share sheet KEY MANAGEMENT • Generate new keypairs in-app with strong defaults (ECC or RSA) • Import existing public and private keys (ASCII-armored or binary) • Search SKS / hkps key servers and Keybase to find recipient keys • Attach your public key to outgoing messages so recipients can import it directly • Inspect key flags, expiration, signatures, and user IDs FILES • Encrypt and decrypt files up to 100 MB per file (200 MB total per message), with on-screen progress • Quick Look preview of decrypted content in-place • Receive encrypted attachments directly from iOS Mail.app — no copy/paste required • Read .pgp, .gpg, .asc, and .sig files from anywhere via the Files app, AirDrop, iCloud Drive, Dropbox, or the system clipboard • Open URL handler for the x-ipgmail:// scheme so other apps can hand work to iPGMail iPAD-OPTIMIZED • Sidebar navigation and full keyboard shortcut support • Optimized layouts for Split View and Stage Manager PRIVACY POSTURE • Private keys are stored locally in a secured private database and unlocked only by Touch ID / Face ID • All encryption, decryption, signing, and verification happens on-device • No account creation, no cloud middleman, no third-party access to your message content • Open standard — your keys and messages stay portable to any other OpenPGP tool, on any platform WHO IT'S FOR Built for journalists, activists, security professionals, lawyers, developers, and anyone who already uses PGP on the desktop and wants the same workflow on iOS. Bring your existing key, decrypt your inbox, sign and send — without surrendering custody of your keys to anyone.

About

Docker Guard

Features
Read full description

Docker Guard is the fastest way to keep an eye on your Docker hosts from your iPhone or iPad. Docker Guard is a native iPhone and iPad monitoring client for your self-hosted Docker environment. It requires the free, open-source Docker Guard Agent running on your Docker host. Connect to any server running the open-source Docker Guard Agent and get a live, industrial-style dashboard of everything that matters — CPU load, memory usage, and the state of every container, image, volume and network. When something needs a nudge, start, stop or restart containers with a single tap. LIVE DASHBOARD - Circular gauges for aggregated CPU and memory usage across all running containers - Sparkline history so you can spot trends at a glance - Engine version, architecture and host name at the top - Counts for containers, images, volumes and networks, always up to date CONTAINER CONTROL - Full container list with status, image and ports - One-tap start, stop and restart - Filter running vs. stopped - Detail view with environment and mount information IMAGES, VOLUMES, NETWORKS - Browse every image on the host with size and tags - Inspect volumes and their drivers - See each Docker network and its driver PRIVACY AND SECURITY FIRST - Your data never touches our servers. The app talks directly to your own Docker Guard Agent over HTTPS. - TLS certificates are pinned on first use (TOFU). Any change is flagged with a clear warning — you decide whether to trust the new fingerprint. - API key authentication for every request. - All credentials and certificate fingerprints live in the iOS Keychain. - Optional Face ID / Touch ID app lock keeps the app protected even if your device is unlocked. BUILT FOR iOS 26 - Native SwiftUI with the Liquid Glass look and feel - Swift 6 strict concurrency, main-actor by default - iPhone and iPad layouts, portrait and landscape - Light and dark mode - English and German SELF-HOSTED BY DESIGN The Docker Guard Agent is a small, open-source Rust service you run on your own machine as a Docker container. It mounts only the Docker socket, exposes a minimal HTTPS API, and generates its own self-signed certificate on first boot. No cloud relay, no telemetry, no third parties. Full setup instructions and the agent source are available on the Docker Guard website. Docker Guard is an independent project and is not affiliated with or endorsed by Docker Inc.

Screenshots

iPGMail4 screens
Docker Guard2 screens

Verdict

The call

The clearest difference is price: Docker Guard at Free against iPGMail's $3.99. Docker Guard also leads on update cadence (daily vs every 10 days). iPGMail's advantage is in-app purchases (none vs 1) and chart position (#199 vs unranked). On ads 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

Docker Guard is free to download; iPGMail costs $3.99 up front. Docker Guard sells 1 one-off in-app purchase. iPGMail asks for nothing beyond the download.

UpkeepUpdate frequency

iPGMail ships an update every 10 days, Docker Guard daily. The most recent releases landed on September 28, 2026 and September 10, 2026 respectively.

Scorecard5 real differences · 6 level
iPGMail versus Docker Guard: the parameters behind the verdict, then further details
ParameteriPGMailDocker Guard
Price$3.99Free — better
Rating4.3 (235 ratings) — better—
Positive reviews66.3% of reviews—
Number of ratings235 — better—
Update frequencyEvery 10 daysDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
Best chart rank#199 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better26.4
Further details — not scored
Size21 MB2 MB
Age rating4+4+
DeveloperWyllys IngersollHans Renz

Bugs and requests

iPGMail

Reported bugs

3 issues
  • Crashes when importing certain private keys
  • Issues with sending/receiving encrypted attachments
  • Problems with key server integration and key management

Requested features

4 requests
  • Ability to save password/passphrase
  • Automatic deletion of local decrypted files
  • Better integration with iOS Mail app
  • Support for more encryption algorithms beyond RSA

Docker Guard

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

iPGMail

No in-app purchases

1 purchases

Docker Guard

One-time1
  • Control Pack$3.99

Questions

Is iPGMail free?
iPGMail costs $3.99, with no in-app purchases.
Is Docker Guard free?
Docker Guard is free to download, with in-app purchases available.
Do iPGMail or Docker Guard have ads?
Neither iPGMail nor Docker Guard shows ads.
Which is updated more often, iPGMail or Docker Guard?
iPGMail ships an update every 10 days, and Docker Guard daily. Most recently, iPGMail was updated on September 28, 2026 and Docker Guard on September 10, 2026.

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