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- S1 vs DIY
SafePal S1 vs SeedSigner DIY
What S1 does better (9) and where DIY wins (17) — every spec side by side.
Why is S1 better than DIY?
- Secure Element chipYes · DIY: No
- Mobile appYes · DIY: No
- Thickness6 mm vs 50 mm8.3×
- Secure bootYes · DIY: No
- PIN lockYes · DIY: No
- PIN entered on the deviceYes · DIY: No
- USB-CYes · DIY: No
- Built-in batteryYes · DIY: No
- Weight126 g vs 150 g+19%
Why is DIY better than S1?
- Open-source firmwareNo · S1: Yes
- Reproducible buildsNo · S1: Yes
- MultisigNo · S1: Yes
- 100% air-gappedNo · S1: Yes
- Source code availableNo · S1: Yes
- Compatible third-party wallets0 vs 11
- Bitcoin-only firmware / editionNo · S1: Yes
- BIP85 child seedsNo · S1: Yes
- SeedQR backupNo · S1: Yes
- User-added entropy (dice)No · S1: Yes
- Message signingNo · S1: Yes
- Own node connectionNo · S1: Yes
Specifications
Side by side
| Security | ||
| Secure Element chip | Yes | No |
| Secure Element certification | EAL5+ | — |
| Air-gapped signing | Yes | Yes |
| 100% air-gapped | No | Yes |
| Supply-chain & tamper protection | Yes | Yes |
| Secure boot | Yes | No |
| Anti-klepto (anti-exfil) signing | No | No |
| Firmware & open source | ||
| Open-source firmware | No | Yes |
| Source code available | No | Yes |
| Reproducible builds | No | Yes |
| Firmware licence | — | MIT |
| Upgradable firmware | Yes | Yes |
| Firmware update via | USB | microSD |
| Bitcoin-only firmware / edition | No | Yes |
| Device lock | ||
| PIN lock | Yes | No |
| PIN entered on the device | Yes | No |
| Fingerprint unlock | No | No |
| Duress PIN / decoy wallet | No | No |
| Brick / wipe PIN | No | No |
| Wipe after failed attempts | No | No |
| Time-delayed unlock | No | No |
| Anti-phishing words | No | No |
| Keys & backup | ||
| BIP39 passphrase | Yes | Yes |
| Shamir backup (SLIP-39) | No | No |
| Seed XOR | No | No |
| BIP85 child seeds | No | Yes |
| 24-word seed | Yes | Yes |
| SeedQR backup | No | Yes |
| microSD backup | No | No |
| NFC backup card | No | No |
| User-added entropy (dice) | No | Yes |
| Stateless use (no stored keys) | No | Yes |
| Multiple seeds on one device | No | No |
| Bitcoin features | ||
| Multisig | No | Yes |
| Taproot | Yes | Yes |
| Miniscript | No | — |
| Message signing | No | Yes |
| Coin control | Yes | Yes |
| Own node connection | No | Yes |
| Tor support | No | Yes |
| Replace-by-fee | No | Yes |
| Silent Payments | No | Yes |
| Spending limits | No | No |
| Testnet | No | Yes |
| Supported assets | ||
| Altcoins & tokens | Yes | No |
| Bitcoin only | No | Yes |
| Connectivity | ||
| Signing connectivity | QR code | QR code, microSD |
| USB | No | No |
| USB-C | Yes | No |
| Bluetooth | No | No |
| NFC | No | No |
| QR code camera | Yes | Yes |
| Animated QR (UR) | No | Yes |
| microSD signing | No | Yes |
| Screen & input | ||
| Screen | Yes | Yes |
| Screen size | 1.3″ | 1.3″ |
| Screen type | IPS | IPS LCD |
| Screen resolution | 320 × 320 | 240 × 240 |
| Touchscreen | No | No |
| Colour screen | Yes | Yes |
| Gorilla Glass | No | No |
| Controls | Buttons | Buttons |
| QWERTY keyboard | No | No |
| Battery & power | ||
| Built-in battery | Yes | No |
| Battery capacity | 400 mAh | — |
| Removable battery | No | — |
| Wireless charging | No | No |
| Design | ||
| Weight | 126 g | 150 g |
| Length | 86 mm | 190 mm |
| Width | 54 mm | 120 mm |
| Thickness | 6 mm | 50 mm |
| Materials | Plastic | Plastic |
| Water / dust resistance | No | No |
| Several colours available | No | Yes |
| Warranty (months) | 12 | — |
| Assembled in | China | — |
| DIY build possible | No | Yes |
| Apps | ||
| Official apps | Android, iOS, Browser extension | — |
| Desktop app | No | No |
| Mobile app | Yes | No |
| Works with wallet apps | — | Bitcoin Safe, Zeus, Nunchuk, Cove, Electrum, Sparrow, Specter Desktop, Blockstream Green, BlueWallet, Bitcoin Keeper, Bull |
| Compatible third-party wallets | 0 | 11 |
| Other features | ||
| FIDO2 / U2F security key | No | No |
| Password manager | No | No |
