FlowCrypt vs LockWhisper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FlowCrypt
Easily encrypt your emails and attachments with PGP for enhanced privacy on Gmail. This app simplifies end-to-end encryption, making it accessible even without technical knowledge of cryptography. Secure your communications and files effortlessly.
- End-to-end PGP email encryption
- Secure attachment encryption
- Key generation and secure storage
- Encrypted drafts
- Password-protected encrypted messages
- Compatibility with OpenPGP standards
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Simple end-to-end encryption to secure email and attachments on Gmail. - Sets up in a few taps - Lets you use PGP encryption by generating a private and public key directly on your iPhone or iPad - Your keys are stored securely in iOS Keychain - You can choose to save your key passphrase on device or enter it as needed - Drafts are encrypted before saving to Gmail - Send messages encrypted with password to users who don't have PGP There are a few ways this encryption app stands out: - Easy email encryption that just works. - Anyone can use it. We've worked to ensure every single way possible that email encryption can be confusing has been removed, so that more people can encrypt Gmail. - You can send encrypted attachments. Text files, powerpoint slides, excel documents, image files, any and all files and attachments can be sent privately. - No understanding of cryptography needed. Don’t know what a public key is? You don’t need to know to secure your email with FlowCrypt. Power users with an existing public key are also served. Whether you have struggled with other ways to encrypt email or you are trying email encryption for the first time, you will find this a very simple secure email solution thanks to PGP. PGP stands for Pretty Good Privacy it's the standard for secure email encryption. This Gmail end-to-end encryption app lets you encrypt Gmail messages anytime your email security and privacy matters, without having to think about it. Most email providers don't give you the level of privacy that we should expect. That is why we created the FlowCrypt app that lets you encrypt google email without needing to learn anything new. Email PGP encryption has been historically a very difficult area, which few people used because there was no easy PGP solution around. If you were asked for a Public Key or a PubKey so that others can encrypt messages for you, just install FlowCrypt and you will find your new Public Key in the settings. Also, file encryption is fully supported. To encrypt an attachment just open a compose screen, add the recipient's email, and attach a file. If they have encryption set up on their end, that's it - just send the encrypted email out. PGP or the OpenPGP is a standard for encrypted communication used by more than 10 million people. FlowCrypt is compatible with most OpenPGP software out there. Looking forward to your feedback! Email us at human@flowcrypt.com as we're improving the app every day. Website: https://flowcrypt.com/ Source code: https://github.com/FlowCrypt/ Documentation: https://flowcrypt.com/docs/
LockWhisper
This app provides a secure, offline vault for all your sensitive data, using military-grade encryption. It offers features like password management, encrypted notes, secure browsing, and dual-password protection for enhanced privacy. Your data remains entirely on your device, with no cloud sync or tracking.
- Offline security and encryption
- Dual-password system for plausible deniability
- AES-256 encryption for all data
- Password manager with AutoFill
- Encrypted notes and journal editor
- Secure browser and QR code scanner
- Cross-device sync via peer-to-peer
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LockWhisper is a private, offline-first security vault for iPhone, iPad, and Mac. It keeps sensitive personal data encrypted on your device without cloud accounts, analytics, tracking, or LockWhisper servers handling your vault contents. ONE PRIVATE PLACE Store passwords, 2FA codes, PGP keys, encrypted notes, journals, plans, files, photos, videos, voice recordings, contacts, cards, identity records, travel documents, vehicle records, saved links, emergency information, habits, and private tasks. LockWhisper also includes a secure browser, secure clipboard, QR and scanner tools, photo metadata cleaning, encrypted search, favorites, import and export tools, and device-to-device sync. PRIVATE BY DESIGN Every supported module is built around local encryption and device-controlled storage. Your vault stays on your device unless you choose to export it or sync supported data directly to another trusted device. A DASHBOARD YOU CONTROL Use daily privacy tips, Quick Actions, Security Snapshot, backup health, favorites, and quick modules to reach what matters. Choose layout presets, change visual density, group modules, resize widgets, and decide which cards appear. REAL AND DECOY VAULTS LockWhisper includes an optional fake password system. Your real password opens your private vault. A separate fake password opens a decoy vault with separate data for plausible deniability. SECURITY TOOLS YOU CAN USE Security Center summarizes password health, authenticator coverage, encryption-key rotation, backup readiness, recovery status, and other actionable findings. Optional auto-destruct, recovery tools, key backup, jailbreak and debug checks, and YubiKey-assisted workflows provide additional protection. PRIVATE DEVICE SYNC Sync supported data directly between trusted devices over encrypted peer-to-peer connections. No LockWhisper account and no central cloud database for your vault contents. ONE PRICE, NOT A SUBSCRIPTION Use core privacy tools free. Upgrade to Pro with a one-time purchase for advanced modules and premium security features. LockWhisper brings passwords, private writing, encrypted files, 2FA, PGP, secure media, planning, scanner tools, and vault records together while keeping personal data under your control.
Screenshots
Verdict
The clearest difference is review sentiment: FlowCrypt at 50% against LockWhisper's 0%. FlowCrypt also leads on in-app purchases (none vs 4). LockWhisper's advantage is update cadence (every 3 weeks vs every 4 months). On price, ads, device support and iOS requirement 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
Both are free to download. LockWhisper sells 4 one-off in-app purchases. FlowCrypt asks for nothing beyond the download.
FlowCrypt ships an update every 4 months, LockWhisper every 3 weeks. The most recent releases landed on August 16, 2026 and July 21, 2026 respectively.
| Parameter | FlowCrypt | LockWhisper |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 3 — better | — |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 28 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | FlowCrypt a. s. | Nevv Atlantis LLC |
Customer experience
FlowCrypt
LockWhisper
In-app purchases
FlowCrypt
No in-app purchases
LockWhisper
- Tip $1$0.99
- Tip $3$2.99
- LockWhisper Pro$4.99
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- Tip $5$4.99









