Last Thursday I was stuck on the Brown Line heading into the Loop when the Fed announced its rate decision. I had a position in KXFEDDECISION that I wanted to adjust, and my laptop was buried in my bag under two coats. So I pulled out my phone, opened the Kalshi app, and tried to get an order in before the market repriced. The whole thing took about twelve seconds. That experience, plus a dozen others like it over the past few months, is what this review is actually based on.
The Kalshi mobile app is clean. Almost too clean, if you're coming from traditional trading platforms where information density is a feature, not a bug. When I first downloaded it after getting pushed off Polymarket by the US geofence, I remember thinking it looked more like a fintech savings app than a trading interface.
That said, there's something to be said for simplicity when you're trading on a phone screen. The main features:
The design choices make sense for the median user. But if you're used to a CME desk setup with six monitors, you'll feel the constraints.
This is what actually matters for active trading. My experience has been mixed, which is the honest answer.
On normal days, when I'm adjusting a position in something like the monthly CPI market (KXCPIYOY) or adding to a longer-dated political contract, the app works fine. Orders submit quickly. Fills happen at expected prices. No complaints.
On high-volume event days, things get more interesting. During major economic releases, I've noticed occasional lag between tapping "submit" and seeing confirmation. We're talking one to three seconds, which matters when prices are moving fast. I've also had a couple of instances where the app needed a refresh to show updated positions.
Is this worse than other mobile trading apps? Honestly, no. I've seen similar issues on TD Ameritrade's mobile app during volatile opens. But it's worth knowing that if you're trying to scalp Fed announcements from your phone, you might get burned by latency.
Let me give credit where it's due. There are several things the Kalshi mobile app handles better than I expected:

For checking positions during the day and making planned trades, the app is genuinely good. I keep it on my home screen.
Now the honest critique. If you're doing serious active trading, here's what will frustrate you:
No advanced order types. You get market and limit orders. That's it. No stop losses, no OCO brackets, no trailing stops. If you want to protect a position with a stop, you have to watch it manually or set a price alert and react. This is a real limitation for anyone managing risk across multiple positions.
Limited depth of book visibility. You can see the best bid and ask, but the full order book isn't as accessible on mobile as it is on the web platform. When I'm sizing a position, I want to see where the liquidity sits at different price levels.
No multi-leg or paired trades. If you want to spread two correlated contracts, you're placing two separate orders and hoping you don't get legged into a bad position.
Occasional sync issues. Twice in the past two months, my portfolio balance on mobile showed something different than the web version. Both times it resolved after a few minutes, but it's not a great feeling when you're trying to confirm a fill.
Here's my actual workflow. I use the Kalshi web platform for research, sizing decisions, and placing larger orders. The desktop experience has better charting, full order book visibility, and just more screen real estate for analysis.
I use the mobile app for:

This Kalshi mobile app review wouldn't be complete without saying: the app is good enough for active trading, but it's not a replacement for the full platform if you're serious about this. Treat it as a complement, not a substitute.
I share trade ideas and market analysis in the Telegram channel I run if you want to see how I'm thinking about specific setups.
Yes, Kalshi has native apps for both iOS and Android. I primarily use the iPhone version, and based on screenshots I've seen from Android users in various trading communities, the experience is similar. Both versions support the core trading features, account management, and push notifications. Download either from the App Store or Google Play.
You can. The app supports bank transfers (ACH) and wire transfers for both deposits and withdrawals. Since Kalshi is CFTC-regulated and requires full KYC verification, you'll need to complete identity verification before moving money. The process is straightforward and you can do the entire thing from your phone if needed.
Yes, you can set push notifications for specific price levels on any contract. I use this feature regularly for economic markets where I want to know if prices move past a certain threshold. The alerts are reasonably quick, usually within a few seconds of the price trigger. It's not institutional-grade speed, but it works for retail active trading.
It depends on your definition of day trading. For monitoring positions and making planned trades throughout the day, the app works well. For high-frequency scalping during volatile events like Fed announcements or election results, you'll probably want to be on the desktop platform where you have better visibility and faster execution. The mobile app is solid, but it has limitations for the most demanding use cases.
Not financial advice. I trade my own money and you can lose yours. Do your own research.