SpiderOak CrossClave vs Polynom
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SpiderOak CrossClave
Securely collaborate with your trusted contacts using private spaces for file storage and chat. This tool prioritizes privacy and security for families, groups, or teams to share and discuss important information.
- Secure collaboration spaces
- Private file storage
- Encrypted chat
- Focus on privacy
- Team and group functionality
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Collaborate securely with the people who matter most to you, with an uncompromising focus on privacy and security. CrossClave’s secure spaces give your family, group, or team a place to store photos and files or chat about upcoming events or projects.
Polynom
This platform offers advanced data protection using post-quantum cryptography and multiple security protocols. It provides secure collaboration with features like Social Encryption™ and Quantum Rooms™ for enhanced privacy.
- Post-quantum cryptography (PQC)
- CNSA Suite 2.0 compliance
- AES-256 encryption
- CRYSTALS-Kyber-1024 key exchange
- SHA-512 secure hashing
- CRYSTALS-Dilithium5 digital signatures
- Social Encryption™
- Quantum Rooms™
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Polynom is a future-facing collaboration platform that uses the latest post-quantum cryptography (PQC) to protect your data from even the most powerful quantum computers. Polynom is CNSA Suite 2.0-compliant and uses a variety of security protocols, including AES-256 encryption, CRYSTALS-Kyber-1024 key exchange, SHA-512 secure hashing, and CRYSTALS-Dilithium5 digital signatures. Polynom also offers Social Encryption™ and Quantum Rooms™, which provide additional layers of security and ranks among the most secure collaboration applications.
Screenshots
Verdict
The clearest difference is device support: SpiderOak CrossClave at 3 against Polynom's 1. SpiderOak CrossClave also leads on iOS requirement (14.3 vs 17). On price, rating, review sentiment and ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.8 for SpiderOak CrossClave against 4.9 for Polynom. Both are backed by a comparable volume of ratings — 10 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
SpiderOak CrossClave ships an update every 5 weeks, Polynom every 2 months. The most recent releases landed on September 28, 2026 and October 11, 2026 respectively.
| Parameter | SpiderOak CrossClave | Polynom |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (10 ratings) | 4.9 (8 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 10 — better | 8 |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.3 — better | 17 |
| Further details — not scored | ||
| Size | 29 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | SpiderOak, Inc. | Code Siren, LLC |
Customer experience
SpiderOak CrossClave
Polynom
In-app purchases
SpiderOak CrossClave
No in-app purchases
Polynom
No in-app purchases
