Hello, I’m developing an app to detect movement past a strong magnet, targeting both Android and iOS. On Android, I’m using the Sensor API, which provides calibrated readings with temperature compensation, factory (or online) soft-iron calibration, and online hard-iron calibration. The equivalent on iOS appears to be the CMCalibratedMagneticField data from the CoreMotion framework. However, I’m encountering an issue with the iOS implementation. The magnetometer data on iOS behaves erratically compared to Android. While Android produces perfectly symmetric peaks, iOS shows visual peaks that report double the magnetic field strength. Additionally, there’s a "pendulum" effect: the field strength rises, drops rapidly, rises again to form a "double peak" structure, and takes a while to return to the local Earth magnetic field average. The peaks on iOS are also asymmetric. I’m wondering if this could be due to sensor fusion algorithms applied by iOS, which might affect the CMCalibratedMagneticField data. Are there other potential reasons for this behavior? Any insights or suggestions would be greatly appreciated. Thank you!

Hello. We have an app and a custom dylib hat seems to be crashing only when Rosetta is involved. I believe it's the custom DYLIB that crashes. Here are some observations. The issue happens on the older 2022 built DYLIB (Intel only) And the newer DYLIB built (Universal) The universal DYLIB works fine natively on both Intel and M1 machines. It's only when we access it through an Intel only .app and it's running with Rosetta that we see the crash. The older Intel only .DYLIB worked perfectly with the same testing .app in versions before Sonoma, now they crash with the same .app, same build. Crash reports have been all over the place, they vary but repeat themselves. It has been a little confusing as to how to approach this issue and would appreciate any input that can help us understand what is going wrong and how to move forward. Crash reports are attached Crash Report 1 Crash Report 2 Crash Report 3 The crash occurs as SIGSEGV Version: 2.0 (1) Code Type: X86-64 (Translated) Parent Process: launchd [1] User ID: 501 Date/Time: 2025-04-14 19:55:06.0103 +0200 OS Version: macOS 14.6 (23G5075b) Report Version: 12 Anonymous UUID: A08ECCFA-BF01-8636-7453-E4476586D3A8 Time Awake Since Boot: 3900 seconds System Integrity Protection: enabled Notes: PC register does not match crashing frame (0x0 vs 0x102920144) Crashed Thread: 10 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x000000011d052840 Exception Codes: 0x0000000000000001, 0x000000011d052840 Termination Reason: Namespace SIGNAL, Code 11 Segmentation fault: 11 Terminating Process: exc handler [3174] VM Region Info: 0x11d052840 is not in any region. Thank you so much for all the attention and effort.

I'm new to the Screen Time API and trying to block custom websites, but I can't get WebDomain tokens to work. When I create a WebDomain like WebDomain(domain: "reddit.com"), the token property is always nil. I have proper authorization and the app works fine for blocking apps, but website blocking just won't work. I'm confused because I see apps like JOMO that let users type in any website domain and successfully block it using Screen Time API. They have the same 49 domain limit and only ask for Screen Time permission, so they must be using the same API I am. But somehow their WebDomain tokens work and mine don't. I've tried creating the tokens right after getting authorization and during the FamilyActivityPicker session, but still get nil. Am I missing some setup step or API call that makes WebDomain tokens valid? Any help would be really appreciated since I'm stuck on this.

I'm building a light-based(sunrise) alarm iOS app using SwiftUI , the idea is to wake users not with sound, but with a full-screen bright light UI (mimicking sunrise or a light alarm clock). I'd like to replicate behavior similar to the native Clock app: My goal: When the scheduled time is reached, forcefully display a full-screen "light" screen, even if the device is: locked running another app or the app is backgrounded The problem: So far, I can: Show a full-screen AlarmView only if the app is opening But I cannot: Automatically wake the screen when app is closed My confusion: I've read that Critical Alerts allow bypassing Do Not Disturb and Silent Mode but that's only for sound right? Can Critical Alerts also help with waking the screen or displaying visuals like full-screen UI automatically? If not, is there any way to simulate this kind of alarm: light-based screen effect ( sunrise alarm clock) triggered automatically at a specific time without needing the user to manually tap the notification? Do I need to consider: PushKit + VoIP? CallKit (but it's meant for calls)? Background tasks + silent push? Or is it simply impossible without special entitlements? Thanks in advance for any insights. This seems like a simple use case (light-based alarm), but I’m surprised how limited the options is.

Hi all, I'm working on a Screen Time-based app with gamification features for families, where both children and parents interact and compare usage stats. The endgoal of the app is to motivate for less screentime or more use of productive apps. I'm testing Apple's Family Controls API, which works great for getting data from child devices. However, this API doesn't support fetching screen time data on the parent device itself. Apps like Jomo appear to provide insights and even their own "calculations" on screen time usage directly on the parent device. I have tested a few apps that showed both the usage data for my children and myself and did some nice things with it like creating stats. I've gone through the documentation and APIs extensively, but I can’t figure out how they’re doing this. As far as I can tell the only solution would be a custom VPN or MDM. However as far as I can tell Jomo for example does not use either of those. My questions are: Am I missing some API Are apps like Jomo using private APIs which they have been granted access to from Apple? Is there any way to access similar data on a parent device without using MDM or VPN? Any guidance or clarification would be greatly appreciated!

reposting this in case it got missed the first time around here https://aninterestingwebsite.com/forums/thread/775900 We had a question that came up when we comparing data from WeatherKit to other sources - WeatherKit visibility was well beyond the boundaries we had historically, even from Darksky. That raises two questions: is visibility actually in meters like the docs say? is this visibility at ground level, 500ft, or some other height? We were seeing visibility numbers of up to 40 miles (after converting the number the API sent to miles), where all of our other sources are usually within 10 miles

In release mode, the values are missing. I don't know what's wrong with it. If I install the debug version first and then overwrite it with the release build, I can retrieve the values stored in debug mode. But if I uninstall completely and install the release version directly, it's empty

Hello, I’m presenting the familyActivityPicker from a presented sheet in my application. When I select some apps, categories or websites and tap “Done”, the familyActivityPicker is dismissed but the presenting sheet is also dismissed on iOS 18.4, iOS 18.5, iOS 26 beta 1 and 2. If I tap on “Cancel” from the familyActivityPicker, the sheet is also dismissed on iOS 18.4, iOS 18.5, iOS 26 beta 1 and 2. The same code works perfectly fine on iOS 18.0, iOS 18.1, iOS 18.2 and iOS 18.3. Is this a known-issue? If opened the feedback FB18369821 for this. Regards, Axel

在watchOS11.5下，Apple watch无法加载天气。无论是否连接自己的iPhone均无法加载

I am developing multi timer app which works in background mode. at first, I could go multi timer in background mode using background mode 'audio' which uses slient wav file. However, app has rejected background mode 'audio' should not use which not for audio app. I want to know how to develop timer app which works in background mode in ios platform. native ios timer that let us alarmed time. so I want develop that kind of app Sincerely,

How can I use the Screen Time API to set a restriction for a child account from my app running on the parent’s account?

in beta5 now the custom sound configuration works and it actually plays sound when alarm runs off BUT the sound is played only for once. has anyone figured out on how to put it on repeat? or do I have to wait on this for another couple of weeks💀

I’m testing FinanceKit with Apple Cash and noticed that transfers don’t include any counterparty information. Here’s an example transaction I fetched: Transaction( id: 5A96EA49-B7C9-4481-949D-88247210C1D7, accountID: 28D7C0E2-DC2A-4138-B105-BCE5EE00B705, transactionAmount: 30 USD, creditDebitIndicator: .credit, transactionDescription: "Transfer", originalTransactionDescription: "", merchantCategoryCode: nil, merchantName: nil, transactionType: .transfer, status: .booked, transactionDate: 2025-08-19 21:57:54 +0000, postedDate: 2025-08-19 21:57:55 +0000 ) As you can see: transactionDescription is just "Transfer" originalTransactionDescription is empty merchantName is nil No counterparty details are exposed In contrast, the Wallet app clearly shows the other person’s name and avatar for Apple Cash transfers, making it easy to understand who the payment was with. In FinanceKit, there’s no way to distinguish between transfers with different people — every transfer looks identical. Questions Is there a hidden or planned field for Apple Cash counterparty information? Can FinanceKit provide at least minimal metadata (e.g., contact name, initials, or a privacy-preserving identifier)? Is there any workaround today to correlate Apple Cash transfers with contacts? Feature request: Please expose counterparty information for Apple Cash transfers. Even something as simple as a stable identifier or name string would enable developers to build Wallet-quality transaction detail screens. Thanks!

My sticker app was rejected when I submitted it to App Store Connect. Reason: "We were unable to locate your stickers in message app after installed your app." When I checked on an iOS18 device, this was correct. However, my stickers is visible when I dragged the half-modal(like sheetPresentationController) part. I hope what I need to do to get the stickers to display initially. My code(Xcode16.2) class StickerViewController: MSStickerBrowserViewController { var stickers = [MSSticker]() override func viewDidLoad() { super.viewDidLoad() loadStickers() } override var stickerSize: MSStickerSize { get { return .small } } func loadStickers() { var imageSetPath = "en" for index in 1...20 { var strIndex = "" strIndex = "stmp" + String(index) + imageSetPath createSticker(assetLocation: "\(strIndex)", assetDescription: "\(strIndex)") } } func createSticker(assetLocation: String, assetDescription: String) { guard let path = Bundle.main.path(forResource: assetLocation, ofType: "png") else { return } let url = URL(fileURLWithPath: path) do { let sticker = try MSSticker(contentsOfFileURL: url, localizedDescription: assetDescription) stickers.append(sticker) } catch { print(error) } } } extension StickerViewController { override func numberOfStickers(in stickerBrowserView: MSStickerBrowserView) -> Int { return stickers.count } override func stickerBrowserView(_ stickerBrowserView: MSStickerBrowserView, stickerAt index: Int) -> MSSticker { return stickers[index] } }

We have received some information that with the release of iOS 18, there have been notable changes in how this API behaves, can apple team shed some light on this? on ios 17 this worked without much issues, what has changed on ios 18?

I'm currently finding it impossible to get a text filtering extension to be invoked when there's an incoming text message. There isn't a problem with the app/extension because this is the same app and code that is already developed, tested, and unchanged since I last observed it working. I know if there's any history of the incoming number being "known" then the extension won't get invoked, and I used to find this no hindrance to testing previously provided that: the incoming number isn't in contacts there's no outgoing messages to that number there's no outgoing phone calls to the number. This always used to work in the past, but not anymore. However, I've ensured the incoming text's number isn't in contacts, in fact I've deleted all the contacts. I've deleted the entire phone history, incoming and outgoing, and I've also searched in messages and made sure there's no interactions with that number. There's logging in the extension so I can see its being invoked when turned on from the settings app, but its not getting invoked when there's a message. The one difference between now and when I used to have no problem with this - the phone now has iOS 18.5 on it. Its as if in iOS 18.5 there ever was any past association with a text number, its not impossible to remove that association. Has there been some known change in 18.5 that would affect this call filtering behavior and not being able to rid of the incoming message caller as being "known" to the phone? Update I completely reset the phone and then I was able to see the the message filter extension being invoked. That's not an ideal situation though. What else needs to be done beyond what I mentioned above in order to get a phone to forget about a message's number and thus get an message filtering extension to be invoked when there's a message from that number?

crash.txt

I just launched my watch app with alarms using WKExtendedRuntimeSession, as an api I wish it was possible to: set a small title/message on the alarm ui itself, right now all it displays is the "Alarm from < app name >" with the app icon, but it would be nice to be able to set a short 1~2 line message below it as well! be able to read the current scheduled date, right now it's only possible to know it's scheduled.

[Question] Inconsistent Call Directory number matching across regions (Japan, Taiwan, U.S.) We’re developing a Call Directory extension and observed inconsistent number matching depending on carrier region and number format. Environment Device: iPhone (iOS 26.0) Call Directory Extension: Custom implementation Carrier A: Japan carrier SIM Carrier B: Taiwan carrier SIM Numbers added to Call Directory patterns: +81 120 580 2XXX +81 704 336 2XXX Observed Behavior (Japan Carrier SIM) Incoming call from +81 120 580 2XXX → Caller name not displayed (Call Directory match failed). Entering 0120 580 2XXX in the Phone app dialer → Name displayed correctly. Incoming call from +81 704 336 2XXX → Caller name displayed correctly. Entering 070 4336 2XXX in the Phone app dialer → Name displayed correctly. Observed Behavior (Taiwan Carrier SIM) Entering +81 120 580 2XXX in the dialer → Name not displayed until the call button is pressed. Entering +81 704 336 2XXX in the dialer → Name displayed immediately, before the call is placed. Steps to Reproduce For Japan carrier: Use a device running iOS 26 with a Japanese SIM card. Add the following numbers to the Call Directory extension: +81 120 580 2XXX and +81 704 336 2XXX Receive an incoming call from +81 120 580 2XXX → ❌ Caller name not displayed. Open the Phone app and enter 0120 580 2XXX → ✅ Caller name displayed. Receive an incoming call from +81 704 336 2XXX → ✅ Caller name displayed. Open the Phone app and enter 070 4336 2XXX → ✅ Caller name displayed. For Taiwan carrier: 7. Insert a Taiwan SIM card (keep the same Call Directory patterns). 8. Enter +81 120 580 2XXX → ❌ Name not shown until the call button is pressed. 9. Enter +81 704 336 2XXX → ✅ Name shown immediately. Expected Result For both numbers: Caller name from Call Directory should display consistently: a) On incoming calls. b) When entering the full number in the dialer (before pressing call). Behavior should be consistent across regions (Japan, Taiwan, United States). Actual Result Region / Carrier Number Pattern Incoming Call Dialer (Local Format) Japan +81 120 580 2XXX ❌ Not shown ✅ Shown (0120 580 2XXX) Japan +81 704 336 2XXX ✅ Shown ✅ Shown (070 4336 2XXX) Taiwan +81 120 580 2XXX N/A ❌ Not shown until call Taiwan +81 704 336 2XXX N/A ✅ Shown immediately Questions How should numbers be formatted or stored in the Call Directory patterns so that they match both incoming calls and dialer input consistently across regions? Are there region-specific number normalization rules (e.g., Japan’s 0-prefixed local dialing or Taiwan’s international format handling)? Is there an official guideline or recommendation for formatting phone numbers in Call Directory extensions (e.g., E.164 vs local format) to ensure consistent matching? Notes The inconsistent behavior appears to be related to how iOS normalizes numbers per carrier region and local dialing conventions. In Japan, incoming calls from mobile numbers starting with 070 match correctly, while 0120 (toll-free) fails unless entered in local format.

I am trying to create an app that allows users to opt in and apply a shield to all of their apps during a specified amount of time each day, but they can always turn the shield off from our app or directly ignore the shield for 1 minute from a shield button. It is important that the user doesn't choose what apps to apply a shield to through the activity picker, as some users might not apply it to all apps. Currently I am doing everything I described in my app and shield all apps and webdomain categories with this: store.shield.applicationCategories = .all() store.shield.webDomainCategories = .all() But the, store.shield.applicationCategories = .all(), seems to block everything except for some system apps like Messages, Phone, FaceTime, Maps, Clock, Settings, Safari, Find My, Clock, Compass, Health, etc. It does block some system apps like Weather, Photos, Camera, Measure, App Store, etc. I know I can fully block applications from it's bundle identifier but I do not want to remove apps from the home screen. I only want to apply a shield to all of them. I have read every apple documentation possible about this and can't see a way to do it, currently how I am doing it seems to be the best way but it is still not enough. Even blocking a specific category token taken from the activity picker won't apply to some system level applications under it unless you get all the application tokens and apply the shield by applications and not category. I am really looking for help to see if there is something I can do to achieve my app's goal.