Comparison

Castella vs Focus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Castella

Features
Read full description

Castella — AI for real shopfloor casting Stop wasting shifts on guesswork. Castella helps foundry technicians and engineers create reliable production parameters for low-pressure die casting and other casting processes — fast, practical, and built for the shopfloor. Why Castella? No extra sensors or hardware required — works with the data you already have. No expensive, slow simulation software — get usable parameters in seconds. Designed by people who work on the floor: prioritizes simple, actionable settings (cooling start/sequence, phase pressures, phase times, total cycle time, region-based cooling, etc.). Reduce trial-and-error, scrap, and rework — increase first-run success. Core features Instant parameter proposals: enter your mold, material, and basic timing/geometry info and get a full parameter set (pressure phases, phase times, cooling schedule). Region-aware cooling: specify mold regions or feeder locations; cooling recommendations start from the farthest mold surface toward the feeder to optimize solidification. Safety & sanity checks: built-in validation warns about unrealistic inputs (e.g., implausible melt temperatures or impossible phase settings) so you don’t run a questionable recipe on the shopfloor. Expert feedback loop: accept, tweak, and save parameters — the system learns from your validated setups and improves over time. Collaborative contributions: share best practices within your team or company so knowledge stays on the floor, not just in one person’s head. Customizable templates: create and recall templates for common molds, alloys, and lines to speed setup. Clear, shopfloor-friendly UI: large touch targets, quick adjustments, and concise parameter summaries for operators. Who it’s for Foundry technicians and shop supervisors who need reliable parameters quickly. Production engineers who want to reduce setup time and variation. Small foundries that can’t afford high-cost simulation suites or extra instrumentation. How it helps you right now Replace “try and fail” cycles with data-backed suggestions. Cut the time between machine setup and a good casting. Reduce dependency on one “expert” by capturing team knowledge in the app. Save money by avoiding unnecessary sensors, third-party simulation licenses, and costly mistakes. Real shopfloor thinking Castella was built with shopfloor realities in mind: minimal inputs, immediate outputs, and clear warnings when a setting looks wrong. It emphasizes practical improvements you can implement today — not theoretical scenarios you’ll never test. Getting started Create a mold profile (or choose a template). Enter alloy, melt temp, and basic geometry/region info. Tap “Generate Parameters” and review the suggested cycle. Adjust, validate on one trial, then save the optimized recipe. Privacy & safety We respect your process data. You control whether recipes stay local to your device or are shared with team members. Castella includes safeguards to prevent obviously unsafe or implausible parameter sets. Join the new way to set up castings — faster setups, fewer rejects, and knowledge that stays on the floor. Download Castella and make your next cast the right one.

About

Focus

This app helps you stay focused by blocking distracting applications for set periods. It uses your own words as reminders and offers features like scheduled focus windows and detailed screen time insights. An emergency pass allows brief access to a blocked app once per session.

Highlights
  • Strict app blocking sessions
  • Scheduled focus windows
  • Live Lock Screen countdown
  • One emergency pass per session
  • Screen time insights
  • Standalone timer and alarms
Features
Read full description

Focus is the app blocker that keeps your word for you. Pick a task, set a duration, and hold to commit. From that second, your chosen apps are locked behind a shield — and there is no snooze, no "remind me in 15 minutes", no way around it. The only way out is through. WHY FOCUS WORKS WHEN WILLPOWER DOESN'T Every distracting app is built by teams whose whole job is to keep you scrolling. Focus levels the field: once you commit, the decision is out of your hands. Open a blocked app and the shield answers with your own words — "I committed to finish my thesis until 21:30." Not a system warning. Your promise, held up to you. STRICT SESSIONS • Choose a task, a duration, and hold to start — a deliberate gesture, not an accidental tap • Blocked apps stay blocked until time is up; the session cannot be cancelled • A live countdown on your Lock Screen keeps the goal in sight • One Emergency Pass per session: unlock a single app for five minutes, then the wall returns FOCUS ON A SCHEDULE • Recurring focus windows for work, study, or sleep — your mornings block themselves • Real alarms that ring from a locked phone, so a schedule is a commitment, not a suggestion • Each rule runs on Apple's Screen Time system, enforced by iOS itself SEE THE PAYOFF • Watch your screen time fall week by week, right next to your focus hours • Per-app insight: what an app cost you before Focus, and what it costs now • Streaks and lifetime stats that never judge, only count TIMER & ALARMS • A clean standalone timer with proper, full-volume alarms • Pick a classic ring or search a song you love as your alarm sound PRIVATE BY DESIGN No account required. Blocking runs on Apple's Screen Time framework, and your activity never leaves your iPhone. We couldn't read it even if we wanted to, because iOS doesn't allow anyone to. The only thing we keep is anonymous usage statistics, never your content. WHO IT'S FOR Students who lose evenings to their phone. Writers, developers, and makers guarding deep work. Anyone who has deleted an app on Sunday and reinstalled it on Monday. Your time is the only thing you truly spend. Focus makes sure it goes where you promised. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ · Privacy Policy: https://itsfocusapp.github.io/focus-legal/privacy.html

Screenshots

Castella4 screens
Focus4 screens

Verdict

The call

The clearest difference is in-app purchases: Castella at none against Focus's 2. Castella also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). Focus's advantage is update cadence (every 2 days vs weekly). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Focus sells 2 in-app purchases, starting at $5.99 per 7 days. Castella asks for nothing beyond the download.

UpkeepUpdate frequency

Castella ships an update weekly, Focus every 2 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 5 level
Castella versus Focus: the parameters behind the verdict, then further details
ParameterCastellaFocus
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyWeeklyEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size10 MB25 MB
Age rating4+4+
DeveloperSerdar PercinMustafa Anıl Kaya

In-app purchases

None

Castella

No in-app purchases

2 purchases

Focus

Subscriptions2
  • Focus Pro Weekly$5.997 Days
  • Focus Pro Yearly7 Days trial$49.991 Year

Questions

Is Castella free?
Castella is free to download, with no in-app purchases.
Is Focus free?
Focus is free to download, with in-app purchases available.
Do Castella or Focus have ads?
Neither Castella nor Focus shows ads.
Which is updated more often, Castella or Focus?
Castella ships an update weekly, and Focus every 2 days. Most recently, Castella was updated on October 27, 2026 and Focus on October 24, 2026.

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