Comparison

Borderline vs Calendar Week Nerd

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

Head to head
About

Borderline

This app tracks your absence days for immigration purposes, comparing them to official government rules. It helps you understand how travel affects your UK ILR, US green card, or Canadian PR status with detailed rule explanations and trip simulations.

Highlights
  • Tracks absence days for UK ILR, US green card, Canadian PR
  • Compares absence days to official government rules with cited sources
  • Simulates future trips to assess impact on immigration status
  • Automatic background GPS detection of border crossings
  • Generates PDF absence reports
  • Manual entry, map view, and data export/import
Features
Read full description

One trip can affect your UK ILR, US green card, or Canadian PR. Borderline tracks every absence day and shows your numbers next to the official rule — cited to the government source, on your phone. Built for people who actually travel: BN(O) holders flying home to Hong Kong, green card holders visiting family abroad, Canadian PRs crossing back and forth for work. Other apps count days. Borderline shows you the rule as the government wrote it — with the source link so you can verify every number yourself. THE RULES, AS WRITTEN • UK midnight rule — a day counts as "absent" only if you're outside the UK at midnight. Calendar-day counters over-report. • Crown Dependencies split — Jersey, Guernsey, and the Isle of Man count as UK for citizenship but NOT for ILR. Most apps treat them identically. • Rolling-window traps — a trip from 18 months ago can still push a rolling 12-month window past 180 days today. Sum-based calculators miss this. • Single-trip thresholds — the US 6-month rebuttable presumption and 1-year residence break are separate from total physical presence. Borderline tracks both. • Cited sources — every threshold links to the official rule behind it: gov.uk, USCIS, canada.ca, Japan ISA. PATHWAYS SUPPORTED • UK ILR — 180 days in any rolling 12-month period • UK Citizenship — 450 days over 5 years, 90 in the final 12 • US Naturalization — 913 days present over 5 years, plus single-trip thresholds • Canadian Citizenship — 1,095 days present in 5 years • Canadian PR Card — 730 days in every rolling 5-year window • NEW: Japan Permanent Residence & Naturalization — with Japan's guideline-based day limits clearly marked as guidance, not statutory rules AUTOMATIC BORDER DETECTION GPS detects crossings in the background, even when the app is closed. No manual logging. TRIP SIMULATOR Before you book, see how a future trip would change your numbers — rolling windows, single-trip thresholds, qualifying dates. Find the longest trip that keeps every threshold intact. APPLICATION-IN-PROGRESS REMINDER After you file your ILR, N-400, or PR application, toggle it on. Borderline keeps a reminder in view: travel during processing can affect a pending application. PDF ABSENCE REPORTS Generate a formal absence report to review with your immigration adviser or keep with your records. MANUAL ENTRY, MAP, EXPORT Backfill past trips (multi-country supported). See every crossing on a map. Export and re-import as CSV or JSON. PRIVATE BY DESIGN Your travel history stays on your device and your private iCloud — never on our servers, and never tied to your identity. No account required. We use only privacy-preserving, anonymous analytics and never track you across other apps. LOCALIZED FOR BN(O) HOLDERS English, Simplified Chinese (简体中文), and Traditional Chinese (繁體中文) — including BN(O) visa terminology. IMPORTANT: Borderline is an informational reference, not legal advice. It never decides your application — it shows your logged days beside the cited official rule, so you and your adviser can. Always verify against official records before applying. Borderline requires an active subscription. 3-day free trial, then an annual or monthly subscription at the price shown in the app. Payment is charged to your Apple ID at confirmation. Auto-renews unless cancelled at least 24 hours before the end of the current period. Manage in your Apple ID settings. Privacy Policy: https://peteryeung0530.github.io/borderline/privacy.html Terms of Use: https://peteryeung0530.github.io/borderline/terms.html

About

Calendar Week Nerd

This app offers customizable widgets for your home and lock screens, allowing you to track week progress and navigate your calendar. It supports Apple Watch complications and various custom week setups, including ISO and fiscal years.

Highlights
  • Home and lock screen widgets
  • Custom week start day
  • ISO and fiscal year week numbering
  • Apple Watch app and complications
  • Direct calendar navigation
  • Yearly progress arcs
Features
Read full description

Have your most beautiful week ever. Calendar Week Nerd is the ultimate week companion that respects both aesthetics and technical needs. Whether you just want minimal, colorful week widgets or need full custom week setup with ISO, fiscal years, and 9-day cycles, CWN adapts to you. Features: Beautiful Widgets: Home screen, lock screen, and interactive widgets in all sizes. Custom Week Setup: Choose your start day, fiscal year, week numbering, even 9-day sprints with custom week lengths. Apple Watch App + Complications: See week numbers and progress right on your wrist. Calendar Navigation: Tap any week and jump directly into your calendar app. Week & Year Arcs: Track where you are in the year at a glance. Calendar Week Nerd The perfect week system you didn't know you needed. Privacy Policy: https://calendarweeknerd.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Borderline4 screens
Calendar Week Nerd4 screens

Verdict

The call

The clearest difference is update cadence: Calendar Week Nerd at every 2 weeks against Borderline's every 2 months. Calendar Week Nerd also leads on device support (3 vs 1). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Borderline sells 2 in-app purchases, starting at $9.99 per month and Calendar Week Nerd sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Borderline against 5.0 for Calendar Week Nerd. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Borderline ships an update every 2 months, Calendar Week Nerd every 2 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
Borderline versus Calendar Week Nerd: the parameters behind the verdict, then further details
ParameterBorderlineCalendar Week Nerd
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS18.0 — better18.4
Further details — not scored
Size14 MB161 MB
Age rating4+4+
DeveloperTin Chi YeungBalthasar Siekiera

Customer experience

Borderline

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Calendar Week Nerd

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Borderline

Subscriptions2
  • Borderline Premium - ILR Tracker3 Days trial$9.991 Month
  • Borderline Premium - ILR Tracker3 Days trial$49.991 Year
3 purchases

Calendar Week Nerd

Subscriptions2
  • CalendarWeekNerd+ Monthly$1.991 Month
  • CalendarWeekNerd Plus Yearly$9.991 Year
One-time1
  • CalendarWeekNerd+ Lifetime$29.99

Questions

Is Borderline free?
Borderline is free to download, with in-app purchases available.
Is Calendar Week Nerd free?
Calendar Week Nerd is free to download, with in-app purchases available.
Which has better reviews, Borderline or Calendar Week Nerd?
Borderline and Calendar Week Nerd are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Borderline or Calendar Week Nerd have ads?
Neither Borderline nor Calendar Week Nerd shows ads.
Which is updated more often, Borderline or Calendar Week Nerd?
Borderline ships an update every 2 months, and Calendar Week Nerd every 2 weeks. Most recently, Borderline was updated on October 30, 2026 and Calendar Week Nerd on November 5, 2026.

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