Free · Five languages · Built in Singapore
Thirty short lessons in the language you think in. No product, no sales pitch, no advice.
Lesson 4 of 30 · 3 min
When interest rates rise, the price of an existing bond usually falls. The coupon is fixed; the price is what adjusts. Here is why, with one bond and one number.
Illustrative screen. The prototype is in a closed iOS test.
Why this exists
US$160 trillion Global fixed-income debt outstanding at the end of 2025 (SIFMA Capital Markets Fact Book). The largest asset class in the world, and the least explained to the people who own it.
Coupon, yield, duration, seniority, minimum denomination — the vocabulary arrives all at once, usually from someone who is paid when you buy. Coursework is written for exams. Broker pages are written to sell.
BondGuru starts from the other end. It teaches first, and it has nothing to sell you.
What you learn
Three to nine minutes a lesson, each ending in a short check. Tier 1 earns a Foundation badge in under an hour.
Tier 1 · Foundation
Forty minutes, plus a six-question check.
In the current prototype
Tier 2 · Growth
13 lessons · Yield to maturity · Credit spreads · Callables and perpetuals · Clean versus dirty price · How bonds are actually bought in Singapore and Hong Kong · +8 more
Planned · authoring from Q4 2026
Tier 3 · Mastery
8 lessons · Prospectuses and term sheets · The yield curve · Funds versus direct bonds · Relative value · +4 more
Planned · authoring from Q1 2027
How it works
Short lessons in five languages. Progress is saved, and every check can be retaken.
Look up real bonds and read their terms in the words you just learned. Save the ones you want to follow.
Ask for a licensed adviser when you want one, and pick the institution yourself. Or simply keep learning.
Talking to an adviser
You arrive at the conversation knowing the vocabulary. The adviser arrives knowing you asked. Neither side wastes the first meeting.
The boundary, in one place. BondGuru teaches. It does not advise, assess suitability, recommend products, rank or match anyone, hold money, place orders or arrange transactions. It is structured as an introducer: you pick the institution from the full panel, the fee arrangement is disclosed before anything is sent, and every regulated conversation happens with the licensed institution you chose. Introductions are available only where an institution has joined the panel, which is disclosed in full inside the app.
Are you the adviser? See what your side looks likeA taste of the method
Every lesson has this shape: a plain question, a plain answer, one thing to check on the document in front of you.
The issuer named on the term sheet, not the bank that sold it to you. Look for the legal entity, and for whether a parent guarantees it.
Senior, subordinated, perpetual or contingent capital are different places in the queue. The coupon usually tells you how far back you are standing.
Yield to maturity assumes you hold to the end and the issuer pays every coupon on time. A callable bond can end early, on the issuer's terms, not yours.
Prices fall when rates rise. Duration tells you roughly how much. A bond you never sell still shows that price on your statement.
Who builds it
“For most of my career I explained bonds one client at a time, across a desk, with a product already in the room. The clients who did best were those who had learned the investment vocabulary before we met. BondGuru exists so that everyone can arrive that prepared.”
Built with InterAktiv Technology, a Singapore-owned development firm established in 2003, led by Teng Chuan Hiang.
Early access
Early access, a direct line to the author of the lessons, and a say in what gets written next. Free, and no obligation to speak to anyone.