21bitcoin vs BISON Comparison
| 0.79 % | Fees | 1.25 % |
| € 7.90 | Cost for €1,000 | € 12.50 |
| 1 | Cryptos | 26 |
| SEPA Instant Transfer, SEPA Transfer | Payment Methods | SEPA Instant Transfer, SEPA Transfer, Credit Card |
| Licensed as a virtual currency service provider according to FM-GwG §32a Para. 2 by the Financial Market Authority of Austria | Regulation | Cryptocurrencies are held by BaFin-regulated company Boerse Stuttgart Digital Custody GmbH. |
Cost comparison
The basis is a Bitcoin purchase worth €1,000, including all fees and spreads.
| € 7.90 | Cost for €1,000 | € 12.50 |
| 0.79 % | Fees | 1.25 % |
| € 0.75 | Wallet transfer | € 0 |
| Yes | Cost transparency | Yes |
| € 15 | Minimum Amount | € 1 |
| SEPA Instant Transfer, SEPA Transfer | Payment Methods | SEPA Instant Transfer, SEPA Transfer, Credit Card |
On a €1,000 purchase you pay €4.60 less at 21bitcoin.
Pros & Cons
- Transparent fees from 0.79% with no ongoing account charges
- Withdrawals to your own wallet at a flat fee of 0.00001 BTC
- Automatic transfer to your own wallet above defined thresholds
- Savings-plan standing orders are invested in Bitcoin as soon as they arrive
- FMA-licensed as a virtual asset service provider in Austria
- Bitcoin only – the lack of altcoins is criticised by some users
- Two-factor authentication needs work, according to users
- The €15 minimum order is higher than at some competitors
- Crypto custody by the BaFin-regulated Boerse Stuttgart Digital Custody GmbH
- Free wallet transfer to your own wallets
- Staking and savings plans available for regular investing
- Tax report offered as an additional feature
- Deposits via SEPA, SEPA instant bank transfer, and credit card
- Minimum amount starting at just 1 € for getting started
- Trading fees of 1.25 % room for improvement compared with some providers
- SMS-based 2FA security – advanced authentication room for improvement
- Processing time for wallet transfers (up to 24 hours) occasionally criticized
Score Comparison
User Experiences
AI AnalysisUser reviews paint a broadly positive picture of 21bitcoin. What owners value most is the clean, intuitive app and how easy it is to use, while individual voices see room for improvement on fees and on the feature set.
Users generally describe BISON in the evaluated user data as easy to understand and clear. In particular, the intuitive and easy-to-use app is frequently praised in reviews, while fees, support, and the selection of coins are seen more critically by users.
This analysis is based on 608 user reviews analysed by AI from the Apple App Store, Trustpilot and the Google Play Store. The total number of reviews on each platform may be higher — the platform ratings (star ratings) shown refer to all reviews available there. The ratings displayed reflect users' experiences and do not represent the site operator's own assessment. All information without guarantee. As of: March 2026. This comparison does not constitute investment advice.
Features
| ✓ | Savings plan | ✓ |
| ✓ | Staking | ✓ |
| ✓ | Wallet transfer | ✓ |
| ✓ | Automatic wallet transfer | ✓ |
| ✓ | Credit card payment | ✓ |
| ✓ | FMA regulation (Austria) | ✓ |
| ✓ | Web platform | ✓ |
| ✓ | Mobile app (iOS/Android) | ✓ |
| ✓ | SEPA instant transfer | ✓ |
| ✓ | BaFin-regulated custodian | ✓ |
| ✓ | Tax report | ✓ |
| ✓ | SEPA instant bank transfer | ✓ |
- Automatic transfer to your own wallet above set amounts
- FMA-regulated and based in Austria
- Fees from 0.79% with full cost transparency
- Deposits via SEPA and SEPA instant transfer
- Powered by Börse Stuttgart with many years of capital markets experience
- Free wallet transfer to your own wallets
- Tax report for crypto tax filing
- BaFin-regulated crypto custody
The five areas head to head
AI AnalysisFees & Costs
On fees and costs the picture is mixed. Users describe the pricing as fair, though some point to costs they consider high. A few also note that the tax side has to be organised by the user, and that the resulting tax burden feels heavy.
When it comes to fees and costs, users report criticism comparatively often. According to reviews, the fees and spread are repeatedly described as high. Especially among price-conscious users, this area is therefore perceived rather critically in the user data.
Usability & User Experience
Reviewers frequently describe the app as intuitive, uncluttered and self-explanatory, and ease of use is the single most praised aspect. A few users report problems getting into their account, but overall usability comes across positively.
Users mainly report a clear design and an intuitive app with BISON. According to reviews, the platform is often described as easy to use, user-friendly, and self-explanatory. Some users mention annoying notifications and report that verification does not always go smoothly.
Features & Offering
The savings plan is the feature users appreciate most. At the same time they ask for more in several places: additional coins, more savings-plan options, price notifications, a wallet inside the account and limit orders. Weekly DCA is mentioned occasionally as well.
According to reviews, users are rather reserved about BISON’s offering, mainly because of the limited coin selection. Many users would like to see more coins or cryptocurrencies; additionally, an API for Blockpit, staking, savings plans, as well as an iPad or Mac version are mentioned occasionally.
Stability & Security
On stability and reliability, users mostly report trouble-free day-to-day use and describe the app as dependable. Access issues come up occasionally and are the one area some users would like to see improved.
In terms of stability and reliability, many users are generally positive about BISON. According to reviews, the app is repeatedly described as reliable. However, some users report app crashes, so from the perspective of individual reviews the technical reliability still has room for improvement.
Customer Support
Support is frequently described as fast, with users reporting prompt replies. Individual contact channels are occasionally seen as having room for improvement.
When it comes to support, users report mixed experiences in the reviews, but overall rather critical ones. There is repeated mention of no support or long response times, which is why some users describe customer service as room for improvement. Support is also occasionally mentioned critically in connection with delays around withdrawals.
Details
| FIOR Digital GmbH | Company | EUWAX AG |
| 2021 | Founded | 2019 |
| Licensed as a virtual currency service provider according to FM-GwG §32a Para. 2 by the Financial Market Authority of Austria | Regulation | Cryptocurrencies are held by BaFin-regulated company Boerse Stuttgart Digital Custody GmbH. |
| € 15 | Minimum Amount | € 1 |
| Photo ID | KYC | eID, VideoIdent |
Verdict
In our overall rating 21bitcoin leads with 4.0 against 2.5 for BISON.
On a €1,000 purchase you pay €4.60 less at 21bitcoin.
For most investors 21bitcoin is therefore the better choice.
21bitcoin has established itself as an Austrian Bitcoin app across German-speaking Europe, valued above all for a transparent fee structure starting at 0.79%. The provider is licensed by Austria's Financial Market Authority (FMA) as a virtual asset service provider and deals exclusively in Bitcoin. Users single out the automatic transfer to a personal wallet above defined thresholds as a genuinely useful security feature.
The savings-plan approach is refreshingly uncomplicated: standing orders are invested in Bitcoin as soon as the money arrives, and the flat wallet-transfer fee of 0.00001 BTC is widely seen as fair. For investors in Austria, Germany and Switzerland looking for an FMA-regulated alternative to the Swiss Bitcoin apps, 21bitcoin reads as a solid option. Total costs of €7.90 on a €1,000 trade sit in the middle of the field.
Because Bitcoin is the only asset on offer, 21bitcoin is not aimed at investors who want a broad crypto portfolio – a limitation some users do point out. The absence of two-factor authentication in the app and the €15 minimum order also leave room for improvement. That makes 21bitcoin a good fit for Bitcoin-focused investors in German-speaking Europe who care about cost transparency, automatic wallet transfers and Austrian regulation.
BISON is the crypto app of Börse Stuttgart and is perceived in the DACH region as a provider with a traditional capital markets background. Crypto custody is handled by Boerse Stuttgart Digital Custody GmbH, which is regulated by BaFin. With 26 tradable coins, the selection is clearly limited compared with specialized crypto exchanges.
As one of the few offerings among German brokers, BISON allows free wallet transfers to your own wallets. Staking, savings plans, and an integrated tax report are also available. Deposits are possible via SEPA, instant bank transfer, and credit card.
The trading fees of 1.25 % are in the upper range of the brokers compared and are occasionally criticized by users. The exclusively SMS-based 2FA and the processing time for wallet transfers of up to 24 hours are also seen as room for improvement. Overall, BISON is aimed at investors who prefer an established German provider and are willing to accept trade-offs in fees and coin selection.