21bitcoin vs BSDEX Comparison
In our overall rating 21bitcoin leads with 4.0 out of 5 points, ahead of BSDEX with 2.9. On disclosed fees BSDEX is cheaper: € 3.50 instead of € 12.90 per €1,000 purchase. If you care most about usability, features, stability, and support, 21bitcoin has the better sub-scores. BSDEX lists more cryptocurrencies (10) than 21bitcoin (1).
| 1.29 to 1.49 % | Fees | 0.35 % |
| € 12.90 | Minimum cost per €1,000 | € 3.50 |
| 1 | Cryptos | 10 |
| SEPA Instant Transfer, SEPA Transfer | Payment Methods | SEPA Transfer |
| Licensed as a virtual currency service provider according to FM-GwG §32a Para. 2 by the Financial Market Authority of Austria | Regulation | Custodian of cryptocurrencies (Boerse Stuttgart Digital Custody GmbH) has a BaFin license. |
Cost comparison
The basis is a Bitcoin purchase worth €1,000, calculated from the disclosed trading fee. A price markup in the spread is not included, because most providers do not publish it.
| € 12.90 | Minimum cost per €1,000 | € 3.50 |
| 1.29 to 1.49 % | Fees | 0.35 % |
| € 0.75 | Wallet transfer | € 0 |
| Yes | Cost transparency | Yes |
| € 15 | Minimum Amount | € 10 |
| SEPA Instant Transfer, SEPA Transfer | Payment Methods | SEPA Transfer |
On disclosed fees you pay €9.40 less at BSDEX per €1,000 purchase.
Pros & Cons
- Transparent service fee of 1.29% to 1.49% on one-off purchases, 0% in the savings plan from day 8, 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
- All 10 cryptocurrencies trade directly against the euro
- Trading and custody under BaFin supervision, custody with Boerse Stuttgart Digital Custody GmbH
- Wallet transfer always free
- The advertised 0.20 % applies to maker orders only. Buying with a market order, which is the normal case, costs 0.35 %, that is 75 % more.
- Only 10 cryptocurrencies, far fewer than at large exchanges
- No savings plan and no staking available
- Only SEPA bank transfer as a payment method
- Two-factor authentication via SMS only, no authenticator app
- Weak app ratings: 1.5 stars on Google Play
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.
User reports on BSDEX overall paint a mixed picture: the clear layout, easy usability and low fees are mentioned frequently, while technical hurdles with login and app usage are also noted in the reviews.
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
| available | Savings plan | not available |
| not available | Staking | not available |
| available | Wallet transfer | available |
| available | Automatic wallet transfer | not specified |
| not available | Credit card payment | not available |
| available | FMA regulation (Austria) | not specified |
| not available | Web platform | available |
| available | Mobile app (iOS/Android) | available |
| available | SEPA instant transfer | not specified |
| not specified | Cost transparency | available |
| not specified | 2FA security | available |
| not specified | SEPA bank transfer | available |
| not specified | Minimum amount | not available |
- Automatic transfer to your own wallet above set amounts
- FMA-regulated and based in Austria
- Service fee of 1.29% to 1.49% on one-off purchases, 0% in the savings plan from day 8
- Deposits via SEPA and SEPA instant transfer
- Regulated trading venue of Börse Stuttgart
- Free wallet withdrawals
- Only 10 coins, no savings plan, no staking
- Market orders 0.35 %, maker 0.20 %
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.
Many users respond positively to the fees and costs. Low fees are highlighted several times in the reviews. Overall, the cost structure is perceived positively from the user perspective.
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 often describe BSDEX as clear and easy to understand, and the intuitive app is also mentioned positively in reviews. At the same time, users report technical hurdles when using the platform, for example when logins are not possible, users have to log in again repeatedly, or the app occasionally freezes.
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.
Regarding features and the offering, the user data shows a rather reserved picture. Users mainly want more coins and more altcoins; a savings plan, a profit-and-loss display and a dark mode are also mentioned occasionally. According to reviews, a chart display is also sometimes requested.
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.
Regarding stability and reliability, users report in part positively about dependable everyday use. At the same time, reviews mention update problems, app startup difficulties, FaceID errors and repeated logouts. The fact that withdrawals are not possible is also occasionally mentioned in the user data.
Customer Support
Support is frequently described as fast, with users reporting prompt replies. Individual contact channels are occasionally seen as having room for improvement.
The support is described by users in several reviews as fast, helpful and competent. Users particularly praise the prompt assistance in direct contact. In individual cases, users would like even more support for specific issues.
Details
| FIOR Digital GmbH | Company | Baden-Württembergische Wertpapierbörse GmbH |
| 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 | Custodian of cryptocurrencies (Boerse Stuttgart Digital Custody GmbH) has a BaFin license. |
| € 15 | Minimum Amount | € 10 |
| Photo ID | KYC | VideoIdent |
Verdict
In our overall rating 21bitcoin leads with 4.0 against 2.9 for BSDEX.
On disclosed fees you pay €9.40 less at BSDEX per €1,000 purchase.
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. On one-off purchases the provider charges a service fee of 1.29% to 1.49%, and in the savings plan no service fee applies from day 8. 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.
BSDEX is a regulated crypto trading venue of Börse Stuttgart. Custody is handled by Boerse Stuttgart Digital Custody GmbH under BaFin supervision, and withdrawals to your own wallet are free. That is solid, but compared with other platforms it is not enough for a good rating.
The offering is narrow: only 10 cryptocurrencies, no savings plan, no staking and SEPA bank transfer as the only payment method. Buying with a market order costs 0.35 %; the advertised 0.20 % applies to maker orders only. Two-factor authentication works via SMS only, authenticator apps are not supported. Users are lukewarm too: the app scores 1.5 stars on Google Play and 3.2 on Trustpilot, with reports of login problems, repeated logouts and issues after updates.
Our verdict: BSDEX suits investors who only want to hold Bitcoin and a few large coins through German exchange infrastructure. If you are looking for a regulated platform with a wider selection, savings plans or staking, Bitpanda or Coinbase are the better choice.