Arca by Privacy Everywhere vs Notebox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Arca by Privacy Everywhere
This email client offers robust PGP encryption for secure communication. Your private keys are generated and stored locally on your device, ensuring they never leave. It seamlessly integrates with other PGP-compatible applications.
- PGP encryption
- Local key generation
- Private key security
- Public key server storage
- Compatibility with PGP Standard apps
- Supports PGP/mime and old format
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Standard email client with PGP encryption option. Keys are generated locally, and private key never leaves users device. Public key is sent to the server. The app is compatible with all PGP Standard apps. Supports both the PGP/mime and the old format with encrypted cyphertext in the body of the message.
Notebox
This app offers a secure, block-based editor with Markdown support for local note-taking. For cross-device synchronization and real-time updates, a subscription unlocks cloud features with zero-knowledge encryption.
- Zero-knowledge encryption
- Block-based editor
- Markdown support
- Local-only mode
- Cross-device sync
- Real-time updates
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# V2 Ultimate Privacy - All user data is stored with D2D zero-knowledge encryption - Block based flexible editor - Supports Markdown - Local-only use on iPhone, iPad and Mac is FREE. # Subscribe to Sync - Across all devices - Real time - Conflict-Free - Complete Security All personal data is stored in personal iCloud. All synchronization is processed on user device locally. --- privacy policy: https://notebox.cloud/privacy-policy terms of use: https://notebox.cloud/terms-of-use
Screenshots
Verdict
The clearest difference is review sentiment: Notebox at 86% against Arca by Privacy Everywhere's 0%. Notebox also leads on update cadence (every 2 days vs weekly). Arca by Privacy Everywhere's advantage is in-app purchases (none vs 2) and iOS requirement (15.0 vs 17.0). On price, 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
Both are free to download. Notebox sells 2 in-app purchases, starting at $1.49 per month. Arca by Privacy Everywhere asks for nothing beyond the download.
Arca by Privacy Everywhere ships an update weekly, Notebox every 2 days. The most recent releases landed on October 5, 2026 and October 16, 2026 respectively.
| Parameter | Arca by Privacy Everywhere | Notebox |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (6 ratings) — better |
| Positive reviews | 0.0% of reviews | 85.7% of reviews — better |
| Number of ratings | — | 6 — better |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 38 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Privacy Everywhere ApS | Guap Inc. |
Customer experience
Arca by Privacy Everywhere
Notebox
In-app purchases
Arca by Privacy Everywhere
No in-app purchases
Notebox
- Monthly Cloud Subscription7 Days trial$1.491 Month
- Yearly Cloud Subscription1 Month trial$14.991 Year
Questions
Is Arca by Privacy Everywhere free?
Is Notebox free?
Do Arca by Privacy Everywhere or Notebox have ads?
Which is updated more often, Arca by Privacy Everywhere or Notebox?
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