AirGap Vault vs Keystone Nexus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AirGap Vault
This app transforms your phone into a secure, offline cryptocurrency vault. It supports numerous blockchains and integrates with other wallets for seamless, secure transaction signing without network connection.
- Blockchain agnostic crypto vault
- Offline private key storage
- Verifiable QR code transaction signing
- Supports multiple companion wallets
- Segwit support
- Offline key generation
- Shamir Shares (Social Recovery)
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AirGap Vault is a blockchain agnostic crypto vault that turns your mobile phone into a cold wallet. AirGap Vault does not connect to any network, irrespective of the device used. This system built into the app makes it more secure than an ordinary crypto wallet. Transactions can be signed seamlessly without the use of cables, thanks to verifiable QR codes. This opens up multiple possibilities for interacting with other solutions. AirGap Vault is currently used alongside other companion apps like AirGap Wallet, MetaMask, Sparrow Wallet, BlueWallet, Specter, and any other QR code-based wallets. These companion apps serve as watch-only wallets that allow users to view portfolios and initiate transactions while the Vault signs transactions and protect your private keys offline. AirGap Vault supports: When paired with MetaMask - All EVM-compatible blockchains When paired with AirGap Wallet - Bitcoin - BTC, - Ethereum - ETH, - Polkadot - DOT, - Kusama - KSM, - Tezos - XTZ, - Cosmos - ATOM, - Moonbeam - GLMR, - Moonriver - MOVR, - Astar - ASTR, - Shiden - SDN, - Aeternity - AE, - Groestlcoin - GRS Features: - Segwit Support - MetaMask Support - Offline Address Overview - Secure Keyboard - Coin Flip & Dice Roll - Offline Key Generation - BIP39 Passphrase - Shamir Shares (Social Recovery) - BIP85 Child Entropy - Open Source Get the highest security by installing AirGap Vault on a separate smartphone, and never connect that phone with any network again. Another option is to install AirGap Vault and its companion app on the same device. Follow the step-by-step video on how to set up the AirGap solution: https://www.youtube.com/watch?v=M9ICKaLxuwQ To learn how to setup AirGap Vault with MetaMask watch this guide: https://www.youtube.com/watch?v=HIKJh0h7QiU
Keystone Nexus
Manage your digital assets securely with this companion app for a hardware crypto wallet. It offers multi-chain support, an intuitive interface, and full control over your assets, syncing across mobile and the hardware device.
- Multi-chain asset management
- Intuitive user interface
- Full asset control and ownership
- Syncs with hardware wallet
- Send and receive digital assets
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**The next evolution in secure crypto management.** Keystone Nexus is the official companion app for the **Keystone 3 PRO**, delivering seamless and secure management of your digital assets. **Key Features:** - **Multi-Chain Support:** Send, receive, and manage your digital assets seamlessly. - **Simple & Intuitive Design:** User-friendly interface tailored for both crypto beginners and pros. - **Ultimate Control:** Your assets. Maintain full ownership and security at all times. - **Stay Synced:** Manage your crypto portfolio securely across mobile and the Keystone 3 PRO hardware wallet. **Need Help?** For questions or support, contact us at: **support@keyst.one** Learn more: [https://keyst.one](https://keyst.one/)
Screenshots
Verdict
AirGap Vault and Keystone Nexus both sit at 4.4 stars, but that hides the real split: 38% of AirGap Vault's written reviews are positive against 20% of Keystone Nexus's. AirGap Vault also leads on device support (3 vs 1) and ratings volume (27 vs 9). Keystone Nexus's advantage is update cadence (fortnightly vs every 2 months). On price, rating, ads and in-app purchases 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 — 4.4 for AirGap Vault against 4.6 for Keystone Nexus. Both are backed by a comparable volume of ratings — 27 and 9 respectively. Written reviews are what separate them: 38% of AirGap Vault's written reviews are positive against 20% of Keystone Nexus's.
AirGap Vault ships an update every 2 months, Keystone Nexus fortnightly. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.
| Parameter | AirGap Vault | Keystone Nexus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (27 ratings) | 4.6 (9 ratings) — better |
| Positive reviews | 38.5% of reviews — better | 20.0% of reviews |
| Number of ratings | 27 — better | 9 |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 116 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Papers GmbH | YANSSIE HK LIMITED |
Customer experience
AirGap Vault
Keystone Nexus
In-app purchases
AirGap Vault
No in-app purchases
Keystone Nexus
No in-app purchases
Questions
Is AirGap Vault free?
Is Keystone Nexus free?
Which has better reviews, AirGap Vault or Keystone Nexus?
Do AirGap Vault or Keystone Nexus have ads?
Which is updated more often, AirGap Vault or Keystone Nexus?
Other comparisons
