# SpiderOak CrossClave vs Polynom

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.

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. Both last shipped on November 3, 2026.

## The numbers

| Metric | SpiderOak CrossClave | Polynom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (10 ratings)](https://appshunter.io/ios/app/spideroak-crossclave/id1570911952/reviews) | **[4.9 (8 ratings)](https://appshunter.io/ios/app/polynom/id6449726919/reviews)** |
| Number of ratings | **10** | 8 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 29 MB | 63 MB |
| Requires iOS | **14.3** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SpiderOak, Inc.](https://appshunter.io/developer/360584374) | [Code Siren, LLC](https://appshunter.io/developer/1685237207) |

## What reviewers say

### SpiderOak CrossClave

[App page](https://appshunter.io/ios/app/spideroak-crossclave/id1570911952)

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.

**Highlights:** Secure collaboration spaces, Private file storage, Encrypted chat, Focus on privacy, Team and group functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Polynom

[App page](https://appshunter.io/ios/app/polynom/id6449726919)

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.

**Highlights:** 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™

**In-app purchases:** none


## Frequently asked questions

### Is SpiderOak CrossClave free?

SpiderOak CrossClave is free to download, with no in-app purchases.

### Is Polynom free?

Polynom is free to download, with no in-app purchases.

### Which has better reviews, SpiderOak CrossClave or Polynom?

Polynom is rated higher. SpiderOak CrossClave averages 4.8 out of 5 from 10 ratings, while Polynom averages 4.9 from 8 ratings.

### Do SpiderOak CrossClave or Polynom have ads?

Neither SpiderOak CrossClave nor Polynom shows ads.

### Which is updated more often, SpiderOak CrossClave or Polynom?

SpiderOak CrossClave ships an update every 5 weeks, and Polynom every 2 months. Most recently, SpiderOak CrossClave was updated on November 3, 2026 and Polynom on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*