21bitcoin vs BSDEX Comparison
In our overall rating 21bitcoin leads with 4.0 out of 5 points, ahead of BSDEX with 2.3. 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 |
| MiCAR authorisation of FIOR Digital GmbH as a crypto-asset service provider from the Austrian FMA since 27 November 2025 | 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 A price markup in the spread is not included, because most providers do not publish it.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 % |
| 1,000 sats | Wallet transfer | € 0 |
| Yes | Cost transparency | Yes |
| € 10 | 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
- 0% service fee in the savings plan from day 8 onwards, with purchases hourly, daily, weekly, every two weeks or monthly
- Instant purchases at a 1.49% service fee, 1.29% with a referral code, with no ongoing account charges
- Euro deposits, account management and Bitcoin custody cost €0, deposits also via SEPA instant transfer
- Limit orders at a target price and variable interest of 1.21% p.a. on the euro balance, paid in Bitcoin on request
- Withdrawals to your own wallet at a flat fee of 0.00001 BTC, automatically once a set balance is reached if you wish
- MiCAR authorisation from Austria’s FMA for FIOR Digital GmbH, decision of 27 November 2025; cold-wallet custody via BitGo Europe GmbH, which holds a MiCAR authorisation from BaFin
- Bitcoin only, the lack of altcoins is criticised by some users
- The 0% in the savings plan only applies from day 8; the first seven days cost 0.99% (0.79% with a referral code)
- Limit orders and instant sales cost 1.49%, a euro withdrawal €1
- Two-factor authentication needs work, according to users
- The €10 minimum order is higher than at some competitors
- All 10 cryptocurrencies trade directly against the euro
- Trading venue notified to BaFin under MiCA (Baden-Württembergische Wertpapierbörse GmbH), custody with Boerse Stuttgart Digital Custody GmbH, licensed under MiCA
- Wallet transfer always free
- Staking for ether and solana, 2 to 8% a year according to BSDEX, slashing risk on ether insured via Munich Re
- Euro balances held at Solaris SE and Deutsche Bank, statutory deposit protection up to €100,000 per bank
- 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 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.
Provider details (fees, licences, pros and cons) editorially reviewed: November 2026. 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 1.49% on instant purchases, 1.29% with a referral code, 0% in the savings plan from day 8
- Deposits via SEPA and SEPA instant transfer
- Limit orders and 1.21% p.a. interest on the euro balance
- Regulated trading venue of Börse Stuttgart
- Free wallet withdrawals
- Only 10 coins, no savings plan, staking for ETH and SOL
- 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 and a wallet inside the account. Limit orders and weekly savings plans, which some reviews ask for, are now part of the offer according to 21bitcoin.
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 |
| MiCAR authorisation of FIOR Digital GmbH as a crypto-asset service provider from the Austrian FMA since 27 November 2025 | Regulation | Custodian of cryptocurrencies (Boerse Stuttgart Digital Custody GmbH) has a BaFin license. |
| € 10 | Minimum Amount | € 10 |
| Photo ID | KYC | VideoIdent |
Verdict
In our overall rating 21bitcoin leads with 4.0 against 2.3 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 and deals exclusively in Bitcoin. On instant purchases the provider charges a service fee of 1.49%, or 1.29% with a referral code; limit orders and instant sales cost 1.49%, and OTC orders from €100,000 cost 0.49% to 0.99%. In the savings plan no service fee applies from day 8 onwards, while the first seven days cost 0.99%. According to 21bitcoin, euro deposits, account management and Bitcoin custody are free of charge; a euro withdrawal costs €1.
Austria’s Financial Market Authority (FMA) granted FIOR Digital GmbH authorisation as a crypto-asset service provider under Article 63 of the EU’s MiCAR regulation by decision of 27 November 2025, so a clearly identifiable European supervisor stands behind the app. Customer Bitcoin is kept separate from the company’s own holdings; the cold-wallet keys are held by BitGo Europe GmbH, which itself holds a MiCAR authorisation from BaFin.
The savings-plan approach is refreshingly uncomplicated: purchases run hourly, daily, weekly, every two weeks or monthly from the euro balance, and the flat wallet-transfer fee of 0.00001 BTC is widely seen as fair. Users single out the automatic transfer to a personal wallet above defined thresholds as a genuinely useful security feature. 21bitcoin now also offers limit orders at a target price and variable interest of 1.21% p.a. on the euro balance; the interest is granted by Volksbank Raiffeisenbank Bayern Mitte eG, and 21bitcoin converts it into Bitcoin free of charge on request.
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. Two-factor authentication in the app and the €10 minimum order are also seen as leaving room for improvement. That makes 21bitcoin a good fit for Bitcoin-focused investors in German-speaking Europe who save regularly and care about automatic wallet transfers and Austrian regulation.
Editorial assessment, November 2026: We have downgraded BSDEX to 2.3 out of 5 and make no recommendation. The trading venue is regulated (Baden-Württembergische Wertpapierbörse GmbH and Boerse Stuttgart Digital Custody GmbH in the ESMA register, file dated 5 November 2026), but it offers too little: only 10 cryptocurrencies, no savings plan, SEPA transfer as the only payment method and two-factor authentication by SMS only. Buying with a market order costs 0.35 percent according to the BSDEX fee schedule (accessed 8 November 2026); the advertised 0.20 percent applies to maker orders only. MiCA-licensed exchanges with a broader offer are listed in our exchange comparison.
BSDEX is a regulated crypto trading venue of Börse Stuttgart. It is operated by Baden-Württembergische Wertpapierbörse GmbH, which notified BaFin of the venue under MiCA in July 2025. Custody is handled by Boerse Stuttgart Digital Custody GmbH under BaFin supervision, licensed under MiCA since January 2025 (according to the ESMA register, file of 30 October 2026). Euro balances are held at Solaris SE and Deutsche Bank and protected by statutory deposit insurance up to €100,000 per investor and bank. 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 and SEPA bank transfer as the only payment method. BSDEX offers staking for ether and solana, at 2 to 8% a year according to its help centre, with insurance against slashing risk via Munich Re; unstaking takes 1 to 45 days depending on the blockchain. 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 or savings plans, Bitpanda or Coinbase are the better choice.