Kisi vs Brex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kisi
This app allows you to unlock doors using your smartphone. It provides secure access control for buildings and facilities, enabling you to manage who enters and when. You can also grant and revoke access remotely.
- Unlock doors with your phone
- Tap-to-unlock functionality
- MotionSense for hands-free unlocking
- Manage access for users
- Grant and revoke access remotely
- View user activity logs
- Schedule door unlocks
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Kisi is a cloud-based door access control and security solution. UNLOCK DOORS WITH YOUR PHONE With the Kisi app, you can use your iPhone to quickly and securely unlock any door equipped with Kisi. - See the list of the doors you have access to and unlock them from the app - Tap-to-unlock*: open a door by holding your iPhone up to a Kisi Reader - MotionSense*: wave your hand in front of the reader to unlock the door without taking your phone out of the bag (only supported by the MotionSense-enabled doors) - One single key for any door in any building * require bluetooth permissions. Some doors might require access to your location to be unlocked. MANAGE ACCESS TO ANYONE WITH ONE TOUCH As a Kisi admin, you can use the Kisi app to quickly and securely manage access to your facilities. - Grant or revoke access to anyone with one touch - Send access links to temporary staff and visitors - See user activity at a given place for a given date - Set scheduled unlocks - Receive relevant security-related notifications
Brex
Manage corporate finances with integrated business accounts, corporate cards, and expense tracking. Streamline reimbursements, payments, and business travel all from a single platform.
- Corporate cards
- Expense management
- Reimbursements
- Business accounts
- Business travel booking
- Global payments
- 24/7 live support
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Brex offers corporate cards, expense management, reimbursements, business accounts, and travel — all on one unified, global platform. The Brex mobile app gives you full, fast access to your Brex account and card. Use the app to make purchases, check spending limits and policies, submit expenses, request or approve reimbursements, send payments anywhere, and more. Download the free Brex app to: • Use your card without reaching for your wallet • Easily check what’s allowed per your expense policy • See any pending tasks at a glance in your inbox • Add missing receipts (many are added automatically!) • Book and manage business travel with global inventory • Send and receive ACH and wire payments anywhere • Store funds in an FDIC-insured business account • Schedule or cancel recurring or one-time payments • Reach live support 24/7 from anywhere Brex accounts also integrate with your existing tools, including QuickBooks, NetSuite, Workday, Coupa, Gusto, WhatsApp, and Slack, to help you streamline workflows and close the books faster Download the app or visit brex.com to get started.
Screenshots
Verdict
The clearest difference is chart position: Kisi at #185 against Brex's unranked. Kisi also leads on device support (3 vs 1). Brex's advantage is update cadence (weekly vs fortnightly). On price, rating, review sentiment and ratings volume there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.8 for Kisi against 4.8 for Brex. Both are backed by a comparable volume of ratings — 23K and 8.8K respectively. Written reviews split almost evenly too, at 45% and 46% positive.
Kisi ships an update fortnightly, Brex weekly. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.
| Parameter | Kisi | Brex |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (23K ratings) | 4.8 (8.8K ratings) |
| Positive reviews | 45.1% of reviews | 45.7% of reviews — better |
| Number of ratings | 23K — better | 8.8K |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #185 — better | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 35 MB | 143 MB |
| Age rating | 4+ | 4+ |
| Developer | KISI Incorporated | Brex |
Customer experience
Kisi
Brex
User reviews
Kisi
From 23K App Store ratingsWhat we love
- 🚀 Convenient and seamless door entry
- 🔒 Secure access control
- 👍 Easy to use
- 🚀 Fast and reliable performance
Room to improve
- 🐛 Inconsistent and unreliable app performance
- 🔒 Overly aggressive location permissions
- 🔋 High battery drain
- ⚠️ Missing important features like Apple Watch support
Brex
From 8.8K App Store ratingsWhat we love
- 🚀 Easy to use
- 🚀 Convenient receipt management
- 🚀 Efficient expense tracking
- 🚀 Helpful notifications
- 🚀 Smooth interface
Room to improve
- 🐛 Unreliable login process
- 🐛 Slow check deposit
- 🐛 Limited app functionality
- 🐛 Inconsistent account closure policies
- 🐛 Lack of transparency in decision-making
Bugs and requests
Kisi
Reported bugs
4 issues- Constant crashes and login issues
- Bluetooth and location permission problems
- Doors not unlocking properly
- App not working on older devices
Requested features
4 requests- Ability to sort and favorite doors
- Offline door unlocking capability
- Widget support for quick access
- Admin features to manage users and permissions
Brex
Reported bugs
4 issues- Check deposit issues
- Incorrect transaction categorization
- Unreliable account linking
- Inconsistent app behavior
Requested features
4 requests- Ability to change flights directly in the app
- Improved iPad support
- Restore gold card in Apple Wallet
- Searchable transaction history in the app
In-app purchases
Kisi
No in-app purchases
Brex
No in-app purchases








