Comparison

Guardian Keyper vs Satodime

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Guardian Keyper

Securely back up your digital secrets like passwords and seed phrases using decentralized social recovery. Encrypt and fragment your data across trusted devices, ensuring only you can access it.

Highlights
  • Decentralized social recovery
  • Encrypts and fragments digital secrets
  • Trusted Guardian device network
  • PGP-style asymmetric cryptography
  • Open-source for transparency
  • Mitigates single points of failure
Features
Read full description

Guardian Keyper is a secure, decentralized mobile app that offers you peace of mind by safeguarding your digital secrets using advanced social recovery technology. The risk of data leakage from centralized storage is eliminated with Keyper, ensuring your passwords, seed phrases, and all private data remain exclusively yours. Harness the power of Web3 Social Recovery technology by encrypting your digital secrets and fragmenting them to the shards stored by trusted Guardians: your smartphone, tablet, or mobile devices of friends and family. Rest assured, neither your Guardians nor Keyper can ever see, store or copy your secret: shards are useless without you. Your Guardians never know your complete secret or contact other Guardians, eliminating the risk of collusion. Key Features: Personally choose your trusted Guardians and be aware of who holds your secret fragments. Mitigate single points of failure and safeguard your digital assets from loss, theft, or hacking. Implement social recovery for any smart contract or account abstraction wallet with Keyper. Secure your secrets with robust PGP-style asymmetric public-key-based cryptography. Stay in Control with Open-Source: Keyper places you in the driver's seat of your digital secrets storage. Access our open-source repository to know precisely who you're entrusting and how the process works. Safeguard your secrets in 5 steps: 1. Install Keyper on at least 3 trusted mobile devices – your Guardians. 2. Add a new Vault on a device for secret entry and recovery. 3. Onboard Guardians by scanning their QR or text codes. 4. Commit your secret(s) to the Vault, where they will be encrypted into Shards and dispatched to Guardians. 5. Retrieve your secrets anytime, provided your Guardians are online. Note: The Vault owner can also be a Guardian, but it's optional (check the “Keep one Shard on my device” checkbox on the Vault creation step). If you decide against retaining a Shard on your device during Vault creation, you'll need 4 devices: the Vault owner and 3 Guardians. If you lose the Vault owner device or one of the Guardians, fear not: you can easily restore your Vault with the consent of the remaining Guardians – ensuring your assets are secure under any circumstances. Word of caution Deleting the app housing your Vault or Shards from your device will cause irreversible loss of them. Restoring a Vault to the device that already holds a shard from the same vault is impossible (this is a limitation of the current release 2.1.1, we will fix it in future releases). Use a device free of any shards from the vault to be restored.

About

Satodime

Securely store, manage, and exchange your cryptocurrencies and NFTs using a smart card. Create multiple vaults, deposit assets, and retrieve private keys with ease, all without account registration. Enjoy off-chain transactions and real-time balance tracking.

Highlights
  • Secure cold storage for crypto assets
  • Create and manage up to 3 vaults per card
  • Deposit and retrieve crypto with QR codes
  • Off-chain exchange of cryptocurrencies and NFTs
  • No account registration or KYC required
  • Multi-crypto support including tokens and NFTs
  • Real-time balance and price tracking
Read full description

This application is the perfect companion to your Satodime smart card, allowing you to physically store, manage and exchange your crypto-currencies. Satodime is the easiest and fastest way to protect your crypto-currencies or other cryptographic assets on cold storage. In a few clicks, create up to 3 vaults per card to store your favorite tokens. Exchange your crypto-currencies and NFTs as you would a banknote without the need for a trusted third party, off-chain. Your vault's private keys are stored and sealed in the chip's secure memory offering added security. Specifications: - No account registration or KYC: scan your card via NFC and operate autonomously. - Multi-crypto support: BTC, XCP, BCH, LTC, MATIC, ETH and ERC-20 and ERC-721 tokens (NFT). - Follow in real time the status of your balances and the price (EUR, USD,...). - The application does not store any sensitive information. - No personal data is collected. - The application is open-source. Features: - Create up to 3 vaults on a single card. - Create a vault in a few clicks (SEAL) and view its content directly. - Deposit your crypto-currencies on this vault easily (deposit address in QR code format). - Retrieve the private key of your vault in a few clicks (UNSEAL). - The application allows you to easily export all the most common private key formats (standard, WIF...). - Delete a vault in a few clicks (RESET). You can reuse your card over and over again (SEAL-UNSEAL-RESET). - The expert mode allows you to use the Testnet, to display additional information and to provide the entropy used to generate the key pairs. Note: Satodime is a product of Satochip S.R.L., Satodime does not sell or provide crypto-currency in any form.

Screenshots

Guardian Keyper4 screens
Satodime4 screens

Verdict

The call

The clearest difference is review sentiment: Guardian Keyper at 100% against Satodime's 33%. Guardian Keyper also leads on rating (5.0 vs 1.0) and update cadence (monthly vs every 5 months). On price, ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Guardian Keyper holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 100% of Guardian Keyper's written reviews are positive against 33% of Satodime's.

UpkeepUpdate frequency

Guardian Keyper ships an update monthly, Satodime every 5 months. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Guardian Keyper versus Satodime: the parameters behind the verdict, then further details
ParameterGuardian KeyperSatodime
PriceFreeFree
Rating5.0 (1 ratings) — better1.0 (1 ratings)
Positive reviews100.0% of reviews — better33.3% of reviews
Number of ratings11
Update frequencyMonthly — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size53 MB31 MB
Age rating4+4+
DeveloperGuardian Labs LimitedSatochip

Customer experience

Guardian Keyper

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Satodime

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

Guardian Keyper

No in-app purchases

None

Satodime

No in-app purchases

Questions

Is Guardian Keyper free?
Guardian Keyper is free to download, with no in-app purchases.
Is Satodime free?
Satodime is free to download, with no in-app purchases.
Which has better reviews, Guardian Keyper or Satodime?
Guardian Keyper is rated higher. Guardian Keyper averages 5.0 out of 5 from 1 ratings, while Satodime averages 1.0 from 1 ratings.
Do Guardian Keyper or Satodime have ads?
Neither Guardian Keyper nor Satodime shows ads.
Which is updated more often, Guardian Keyper or Satodime?
Guardian Keyper ships an update monthly, and Satodime every 5 months. Most recently, Guardian Keyper was updated on October 14, 2026 and Satodime on October 24, 2026.

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