BISON belongs to the Boerse Stuttgart Group and has been on the market since 2019. For this review we evaluated the provider's official material only — the fee page, the help centre and the risk information. Data collected 15 August 2026.
The regulatory structure
BISON is not a single company but a construction of several regulated entities. Anyone assessing its safety needs to understand that split.
The app is operated by EUWAX AG, registered at Boersenstrasse 4, 70174 Stuttgart. Custody of crypto-assets is handled by Boerse Stuttgart Digital Custody GmbH, which according to BISON was the first company to receive a MiCAR licence from BaFin. Euro balances are not held by BISON itself but by its banking partners Solaris SE and Deutsche Bank AG.
This three-way structure has a practical consequence that is often missed: statutory deposit protection of 100,000 euros applies to the euro balances — per customer and per partner bank. With two partner banks, up to 200,000 euros can therefore be covered.
That protection expressly does not extend to the crypto-assets themselves. Cryptocurrencies are not covered by any deposit guarantee. Custody is instead covered by an insurance arrangement which, according to the provider, protects against theft and hacking among other risks and is included in the custody service. It is not insurance against price losses, nor is it meant to be.
Users do not enter into a separate contract with the partner banks; BISON remains the single point of contact.
The fees
BISON's fee page is unusually clearly structured and dispenses with tiers, loyalty levels and discount mechanics. That is a genuine advantage — but it does not make the costs low.
Free of charge: account opening, account maintenance, euro deposits and withdrawals, crypto deposits and withdrawals, Instant SEPA transfers, and custody including insurance cover.
The actual cost sits in the spread. Buying and selling Bitcoin and Ethereum carries a proportional spread averaging 1.25 percent; all other cryptocurrencies average 1.75 percent. BISON itself notes that this figure fluctuates and can depend on market conditions and trade size.
Important for the arithmetic: the spread applies in both directions. A full buy-and-sell cycle on an altcoin position therefore costs in the region of 3.5 percent before any price gain has been made at all.
Instant deposits by credit card, Apple Pay or Google Pay cost an additional 2.49 percent of the transaction volume. Instant SEPA is free at BISON but may trigger fees at the user's own bank. For investors depositing regularly, bank transfer is not one option among several — it is the only sensible one.
Securities cost a flat 1.99 euros per purchase or sale regardless of size. On a 100-euro order that is roughly 2 percent; on 1,000 euros only about 0.2 percent. Small recurring purchases of shares and ETFs are comparatively expensive here.
The point that gets too little attention: staking
For Ethereum and Solana, BISON retains 27 percent of the staking rewards. That is stated on the official fee page and sits at the upper end of the market.
More significant, however, is a second note on the same page, in BISON's own words: the staking service is currently not regulated under MiCAR and does not offer the protection and supervision established by EU rules.
This deserves emphasis. Anyone choosing BISON precisely because of German regulation should know that this argument does not carry for the staking part of the offering. Trading and custody are regulated; staking, according to the provider, is not.
Handled transparently at least: BISON developed an insurance arrangement together with Munich Re covering slashing risk in Ethereum staking — the potential loss of crypto-assets where validators breach network rules. Detailed risk information is set out in the staking special terms.
Ratings
On its own website BISON reports an average rating of 4.49 out of 5 stars, drawn from a total of 48,180 reviews: 4.6 stars from 39,020 reviews in the iOS App Store and 4.0 stars from 9,160 reviews in the Google Play Store, each retrieved on 27 March 2026.
The gap between the two platforms is notable and rarely mentioned in coverage of BISON. The average is heavily carried by the iOS share.
Who BISON suits
The strengths are clearly on the regulatory side: a German-domiciled structure, BaFin supervision of the operator, MiCAR-licensed custody, statutory deposit protection on euro balances across two partner banks, and a fee page that genuinely discloses everything, including the uncomfortable parts.
The weakness is price. A spread of 1.25 to 1.75 percent in each direction is high by European standards, and the 27 percent staking fee reinforces that impression.
BISON therefore suits beginners who value German supervision, German-language support and simple operation, and who invest in modest, regular amounts. It is less suited to active traders, to large volumes, and to anyone whose primary concern is execution cost.
Scoring
Fees: 2 out of 5. The spread is transparently disclosed but high, and applies in both directions.
Regulation and security: 5 out of 5. Cleanly separated, individually supervised entities, MiCAR-licensed custody, deposit protection on euro balances across two banks.
Transparency: 4 out of 5. The fee page is exemplary and names the absence of MiCAR protection on staking. One point deducted because the spread is given as an average and can fluctuate.
Feature range: 3 out of 5. Crypto, shares, ETFs, ETCs, savings plans and staking cover the needs of retail investors. Advanced functions such as futures, margin or lending are absent.
Investing in crypto-assets carries substantial risks and can lead to total loss of the capital invested. This review is not investment advice.