Mimiri Notes vs Nen: Which is Better in 2026?
A comprehensive comparison of Mimiri Notes and Nen covering features, pricing, use cases, and which tool is the right choice for your needs.
⚡ Quick Verdict
Choose Mimiri Notes if:
- →You want more affordable paid plans (from $1.2/mo)
- →You need aes-gcm-256 encrypted on-device before anything is uploaded or share a single note or a whole subtree, still end-to-end encrypted
Choose Nen if:
- →You need payload stays ciphertext past tls termination — logs, cdn and proxies see base64 or ml-kem-768 (fips 203) post-quantum key exchange with chacha20-poly1305
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Mimiri Notes vs Nen: At a Glance
Pricing Comparison: Mimiri Notes vs Nen
Understanding the pricing differences between Mimiri Notes and Nen is crucial for making the right choice. Here's how their plans compare side by side.
Mimiri Notes Pricing
Nen Pricing
💡 Pricing takeaway: Both Mimiri Notes and Nen offer free tiers, making it easy to try before you buy. Compare the specific plans to find the best value for your use case.
Feature-by-Feature Comparison
Here's how every feature from Mimiri Notes and Nen stacks up.
What Makes Each Tool Unique
🔵 Unique to Mimiri Notes
Features available in Mimiri Notes but not in Nen:
- ✓AES-GCM-256 encrypted on-device before anything is uploaded
- ✓Share a single note or a whole subtree, still end-to-end encrypted
- ✓Hidden from screen-sharing software; PIN lock and auto-lock
- ✓Open source under GPLv2 with clients for six platforms
- ✓Free tier is permanent, not a trial; paid tiers only add storage
🟣 Unique to Nen
Features available in Nen but not in Mimiri Notes:
- ✓Payload stays ciphertext past TLS termination — logs, CDN and proxies see base64
- ✓ML-KEM-768 (FIPS 203) post-quantum key exchange with ChaCha20-Poly1305
- ✓Drop-in nenFetch client and withNen server wrapper, about ten lines total
- ✓Mandatory per-request HMAC and replay protection; encrypted SSE streaming
- ✓Open-source SDK with a published protocol spec and threat model
Use Case Recommendations
Best for: Mimiri Notes
Mimiri Notes is an end-to-end encrypted note app that treats encrypted sharing as a first-class feature rather than an enterprise add-on: you can share a single note or a whole branch of the tree with several trusted people, and every change inside that subtree syncs between participants while staying decryptable only by them. Everything is AES-GCM-256 encrypted on your device before it leaves, so neither the vendor, its servers nor your ISP can read it, and the whole codebase is open source under GPLv2 so the security claims are inspectable. The organising model is a tree with no distinction between folders and notes — any note can hold both content and sub-notes, nesting without limit, with search to narrow the tree quickly. Practical hardening goes further than most: a PIN code gates the running app, the window hides itself from screen-sharing software to prevent accidental exposure, passwords are hidden from onlookers and cameras, and the app can auto-lock after a period of disuse. Clients exist for Windows, Linux, macOS, Android, iOS and the web, all syncing in real time with a local offline copy and automatic conflict resolution. The free tier is explicitly not a trial. The company behind it is innonova GmbH, and downloads are published for every supported platform alongside a browser client that needs no install at all.
Ideal use cases:
- •Teams or individuals who need aes-gcm-256 encrypted on-device before anything is uploaded
- •Teams or individuals who need share a single note or a whole subtree, still end-to-end encrypted
- •Teams or individuals who need hidden from screen-sharing software; pin lock and auto-lock
- •Teams or individuals who need open source under gplv2 with clients for six platforms
- •Anyone focused on encryption workflows
- •Anyone focused on notes workflows
Best for: Nen
Nen addresses a gap that is not a flaw in TLS so much as the place TLS stops. HTTPS protects a request in transit and does it well, but the moment TLS terminates — at the load balancer, the CDN edge, the serverless runtime — the JSON body sits in plaintext across logs, databases, proxies and every third-party hop. Nen keeps the payload itself encrypted end to end, so the trust boundary moves inward past all of that to the specific code that genuinely needs to read the data. The integration is deliberately small: swap fetch for nenFetch on the client, wrap the route handler with withNen on the server, and the handshake, key rotation, per-request HMAC and replay protection happen underneath, roughly ten lines start to finish. The cryptography is post-quantum by default — ML-KEM-768 key exchange under FIPS 203 with ChaCha20-Poly1305 for the payload — which matters specifically for harvest-now-decrypt-later exposure, since payloads that come to rest as ciphertext in a queue or a database stay protected. Encrypted server-sent-event streaming is supported, along with in-memory, Redis and edge session stores. The site is unusually careful about what it does not claim: it states plainly that the two Nen endpoints necessarily hold plaintext, publishes a threat model and protocol spec, and even links a page arguing that if your only concern is the public transit leg, PQ-TLS already covers you. The SDK is open source with no limits.
Ideal use cases:
- •Teams or individuals who need payload stays ciphertext past tls termination — logs, cdn and proxies see base64
- •Teams or individuals who need ml-kem-768 (fips 203) post-quantum key exchange with chacha20-poly1305
- •Teams or individuals who need drop-in nenfetch client and withnen server wrapper, about ten lines total
- •Teams or individuals who need mandatory per-request hmac and replay protection; encrypted sse streaming
- •Anyone focused on encryption workflows
- •Anyone focused on post-quantum workflows
🔐 Other Security & Privacy Tools to Consider
Mimiri Notes and Nen aren't the only options. Here are other popular tools in the same space:
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Snyk
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Is one of these your tool?
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Frequently Asked Questions
Is Mimiri Notes better than Nen?
It depends on your needs. Mimiri Notes offers 5 key features including AES-GCM-256 encrypted on-device before anything is uploaded and Share a single note or a whole subtree, still end-to-end encrypted, while Nen provides 5 features including Payload stays ciphertext past TLS termination — logs, CDN and proxies see base64 and ML-KEM-768 (FIPS 203) post-quantum key exchange with ChaCha20-Poly1305. Mimiri Notes uses a freemium model with a free tier, while Nen is freemium with free access available. Choose based on which features and pricing model align with your requirements.
Is Mimiri Notes cheaper than Nen?
Mimiri Notes is cheaper, starting at $1.20/month compared to Nen's $79/month. Both tools offer free tiers, so you can try each before committing. Always check the official websites for the most current pricing.
Can I use Mimiri Notes and Nen together?
Yes, many users combine Mimiri Notes and Nen in their workflow. Mimiri Notes excels at aes-gcm-256 encrypted on-device before anything is uploaded, while Nen shines with payload stays ciphertext past tls termination — logs, cdn and proxies see base64. Using both allows you to leverage the strengths of each tool, though this means managing two subscriptions — though free tiers can help manage costs.
What's the main difference between Mimiri Notes and Nen?
While both are security & privacy tools, Mimiri Notes emphasizes aes-gcm-256 encrypted on-device before anything is uploaded, whereas Nen is known for payload stays ciphertext past tls termination — logs, cdn and proxies see base64. The best choice depends on your specific workflow and feature priorities.
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