Locked In!
Security+
On the App StoreThe baseline security certification, one domain at a time.
INDEPENDENT iOS STUDIO
We trace ideas from a single line of Swift to the App Store.
Stack Trace Studios is a solo-run iOS studio crafting native, privacy-first apps in SwiftUI. Three families: Locked In! for certification exam prep, the Curriculum Suite for four-year courses, and the standalone studio apps. 27 apps.
27apps in the catalog
23live on the App Store
100%native SwiftUI
0third-party trackers
// certification exam prep
Locked In!
A family of focused, offline study apps — one per certification. Bite-sized lessons mapped to the official exam blueprint, performance-based questions, flashcards, and weak-spot tracking.
Locked In!
CySA+
On the App StoreAnalyst work: detection, triage, and the response that follows.
Locked In!
PenTest+
On the App StoreScoping, recon, exploitation, and writing the report that lands.
Locked In!
SecurityX
On the App StoreThe advanced practitioner exam, for architects and engineers.
Locked In!
CISSP
On the App StoreAll eight domains of the Common Body of Knowledge.
Locked In!
OSCP
On the App StoreStudy companion for the hands-on offensive certification.
Locked In!
A+
On the App StoreBoth cores, nine domains, the whole IT support foundation.
Locked In!
Network+
On the App StoreWiring, addressing, routing, and why the packet did not arrive.
Locked In!
Linux+
On the App StoreThe command line, the filesystem, and everything systemd.
Locked In!
Cloud+
On the App StoreVendor-neutral cloud architecture, operations, and cost.
Locked In!
Data+
On the App StoreMining, analysis, visualisation, and data governance.
Locked In!
Project+
On the App StoreProject management for people who did not sign up to be PMs.
Locked In!
PMP
On the App StorePeople, Process, Business Environment — and the situational judgement.
// four-year courses, offline
Curriculum Suite
Full university-length courses in one app each — a hundred lessons across four years, with the evidence attached and the disagreements taught as disagreements.
Liminal
On the App StoreFour years of Western philosophy, from the Presocratics to now.
Cognita
Coming soonWundt to fMRI — including the studies that failed to replicate.
Codon
Coming soonMolecules to ecosystems — and the numbers textbooks get wrong.
Scarcity
Coming soonSmith to Piketty, with the live disagreements taught as disagreements.
Biome
Coming soonSoil to climate policy, separating the settled from the contested.
Unredacted
On the App StoreContact to the drone war, including the parts that get left out.
// everything else
Studio Apps
The standalone apps — reference, everyday tools, and one game. Each one does a single job and is built to work without an account.
Learning & Reference
CivBites
On the App StoreBite-sized U.S. civics with an adaptive quiz that finds your weak spots.
Critica
On the App StoreCritically annotate the Islamic sourcebase — Qur'an, hadith, sira, fiqh, tafsir.
Decanon
On the App StoreThe canon, deconstructed — all 66 books with plain-language critical notes.
Tools & Utilities
Tanksmith
On the App StoreAn offline logbook for reef keepers — readings, livestock, dosing, trends.
Roomprint
On the App StoreDocument your rental from move-in to move-out, then export the PDF.
DishCheck
On the App StoreCheck a menu against your allergen profile before you order.
Period Private
On the App StoreA cycle tracker that is 100% offline — no account, no sync, no tracking.
Fractured: US
On the App StoreA composite index tracking U.S. civil-conflict risk, with a Home Screen widget.
// about the studio
Small studio, deep catalog.
Stack Trace Studios is an independent, solo-run iOS studio. The name is a nod to where every good build ends up — reading the trace, finding the line, shipping the fix. We make focused apps that do one thing well, then move on to the next idea.
Everything is written in modern SwiftUI and SwiftData. Apps are designed to run on-device and offline wherever possible, so your data stays yours — no accounts to create, no analytics SDKs, no ads. When an app needs a paid tier, it is a simple one-time unlock, not a subscription treadmill.
- native 100% SwiftUI & SwiftData — no cross-platform shortcuts
- private on-device first; no trackers, no ad SDKs
- offline built to work without a signal
- honest one-time unlocks, never dark patterns
- focused one app, one job, done well
// say hello
Let's build something.
Support question, press inquiry, or just want to talk shop about indie iOS? The inbox is open. For help with a specific app, the support pages get you there faster.
$ mail OmarAppSupport@gmail.com