Billy vs Karui Notifications
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Billy
Effortlessly divide expenses with this tool. Scan receipts or manually input items, then assign them to individuals. It calculates each person's share of costs, including tax and tip, providing clear, transparent breakdowns.
- Scan receipt photos
- Manually enter line items
- Assign items to individuals
- Calculate tax and tip share
- Generate per-person totals
- Create shareable PDF breakdowns
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Billy makes it super easy to split bills fairly by generating individualized breakdowns of what each person ordered or shared and is responsible for. Simply scan a photo of your receipt or manually enter each line item as well as any tax and tip. Next, assign each item to the person who ordered it or the people who shared it. Billy will then generate individualized breakdowns for each person showing exactly which items they’re responsible for, their share of tax and tip, and their individual total. Billy can even generate a PDF of the entire per-person breakdown that can be easily shared, making it easy to communicate who owes what with full transparency. With Billy, payback’s a breeze.
Karui Notifications
This app provides a unified notification history for all your applications, allowing you to view deleted messages and filter out spam. It offers VIP contact prioritization, emergency alarms, and auto-replies for specific situations. The app processes notifications privately on your device, ensuring your data remains secure.
- View unsent messages
- Unified notification history
- VIP contact prioritization
- Emergency alarm feature
- Spam and promotion filtering
- Auto-reply functionality
- Notification translation
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Read unsent messages: when someone takes a message back, it’s still in Karui. Takes about a minute to set up. Every app’s notifications in one searchable history. Your VIP contacts always get through your Focus, from any app. Wake Me: people you choose can ring an alarm in an emergency, even when your iPhone is silenced. Spam and promotions are silenced, judged by the actual message, not the app. One-time codes are never silenced. Several quick messages from one person arrive as one notification. Auto Reply: tells your VIPs you’re driving, in a meeting, or asleep, and that you’ll reply later. Automatically translate notifications into your language. Deadline reminders: when a notification asks for something by a certain day, Karui reminds you the day before. How it works: Karui evaluates notifications privately on your iPhone, using your important contacts and calendar info, and decides whether to show them or hide them. Setup: you add the Karui Shortcut from a link, which takes about a minute and is all you need to read unsent messages. To filter spam, you also choose a Focus that keeps your other apps quiet. Karui guides you through both. Spam filtering and deadline reminders require Apple Intelligence to be supported and turned on. Viewing unsent messages works without it. Privacy: Karui runs privately on your iPhone with Apple Intelligence, using Apple’s on-device model, so your notifications stay on your device. The optional Second Opinion feature, off by default, sends a notification’s text to Apple’s Private Cloud Compute when you turn it on. Karui has no server, does not require an account, and sends zero analytics.
Screenshots
Verdict
The clearest difference is update cadence: Karui Notifications at daily against Billy's every 6 weeks. Billy's advantage is iOS requirement (17.0 vs 27.0). On price, rating, ratings volume and ads 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 — 5.0 for Billy against 5.0 for Karui Notifications. Both are backed by a comparable volume of ratings — 3 and 3 respectively.
Billy ships an update every 6 weeks, Karui Notifications daily. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.
| Parameter | Billy | Karui Notifications |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 | 3 |
| Update frequency | Every 6 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 — better | 27.0 |
| Further details — not scored | ||
| Size | 7 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonathan Sahoo | Justin Henry Garcia |
Customer experience
Billy
Karui Notifications
In-app purchases
Billy
No in-app purchases
Karui Notifications
No in-app purchases









