macOS

How to Compile OpenSSL 1.1.1 for Apple Silicon

By Sasmito Adibowo ⋅ 2020-08-10 ⋅ 3 comments

The long-rumored ARM Mac is on the horizon. With this comes the big work of porting and re-compiling current applications. But many Mac App Store apps are dependent on OpenSSL, which doesn’t yet support ARM on the Mac. Here is how you can continue to test your mac app while waiting for official OpenSSL support […]

How to Unit Test Network Code in Swift

By Sasmito Adibowo ⋅ 2020-07-16 ⋅ 3 comments

Testing network I/O code without accessing the backend is not easy. Here is how you can mock the backend by injecting code into the URL Loading System

How to Provide Free Time-Limited Trials in the App Store

By Sasmito Adibowo ⋅ 2020-01-02 ⋅ 4 comments

Providing “lite” version of apps had been the strategy to provide free trials since the dawn of the App Store. However these reduced-functionality apps fall short on demonstrating its full capabilities, which in itself be ineffective in enticing the user to buy. Fortunately that is no longer the only option available for App Store apps.

Code Signing Failure due to Symlink Folders

By Sasmito Adibowo ⋅ 2019-12-12 ⋅ Post a comment

You try to reduce the application’s size by sharing resources in framework bundles and creating symbolic links so that other frameworks can find and use those resources. However this fell at odds with code signing (and probably notarization). Here is how to share code and resources in frameworks the right way.

How Newbies Should Start Learning iOS User Interface Programming

By Sasmito Adibowo ⋅ 2019-11-28 ⋅ Post a comment

When you’re just starting out in iOS development, there are so many options in which to place a button. There’s storyboard, auto layout, and even SwiftUI — that’s just scratching the surface. How should someone new to programming the platform chart a learning path?

Modeling In-App Purchases Inventory

By Sasmito Adibowo ⋅ 2019-11-14 ⋅ Post a comment

There are four types of in-app purchases in Apple’s App Store, with their own unique ways to manage it. The challenge is how to isolate the intricacies of these product types from the rest of the application. Otherwise a move from non-consumable in-app purchase to a subscription type would involve a major rewrite. Learn how […]

Time-Limited in-App Purchase

By Sasmito Adibowo ⋅ 2019-10-17 ⋅ One comment

What if you need to create a “holiday special” in-app purchase? The item would only be available at a limited period some time in the future. However those who have bought the item would be able to use it beyond the purchase-able period, including restoring purchases should they need it.

Notarizing Disk Images for Developer ID Distribution

By Sasmito Adibowo ⋅ 2019-10-10 ⋅ One comment

Do you distribute your macOS apps as .zip files? That has been quaint since Sierra. You should package your apps as signed and notarized disk images instead. Otherwise Catalina would say that your package is suspicious. However creating disk images is a rather involved process. Read on to find out more.

Selecting iTunes Provider for Notarization

By Sasmito Adibowo ⋅ 2019-10-03 ⋅ Post a comment

When your Apple ID is also used for as a publisher for Apple Books or Apple Music, you may hit a snag when trying to notarize your Developer ID application. Here is how to fix it.

Invalid Bundle Identifier Error at Notarization

By Sasmito Adibowo ⋅ 2019-09-26 ⋅ Post a comment

Notarizing your app? Make sure you name your bundles correctly beforehand. This includes the main app, extensions, and any sub-bundles inside it.

All About In-App Purchases

By Sasmito Adibowo ⋅ 2019-09-25 ⋅ Post a comment

There are four types of in-app purchases in Apple’s App Store, with their own unique ways to manage it. Learn how to manage an app’s inventory of purchases, get the code base resilient to changes in the business side, and tips on how to implement some more esoteric business models as in-app purchases.

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