Comparison

在留 Zairyu vs Sign In Authenticator

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

Head to head
About

在留 Zairyu

Features
Read full description

在留 Zairyu helps foreign residents in Japan track their residence card (在留カード) expiry dates and never miss a renewal deadline. 【Features】 ■ Expiry Countdown · Days remaining displayed at a glance · Application window start date calculated automatically per visa type · Status color coding: Safe / Window Open / Urgent / Critical ■ Residence Card OCR Scan · Point your camera at your residence card to auto-fill name, visa type, and expiry date · All processing happens on-device — your card data never leaves your phone ■ Push Notifications · Reminder 30 days before expiry (free) · Pro unlocks up to 5 alert stages: 90 / 60 / 30 / 14 / 7 days before expiry · Long-press a notification banner to snooze for 3 or 7 days ■ Document Checklist · Required renewal documents listed by visa category · Direct links to the official Immigration Services Agency website ■ Widgets · Home screen widgets: Small, Medium, Large · Large widget shows up to 3 cards simultaneously · Lock screen widgets: Circular, Rectangular, Inline (Pro only) ■ iCloud Sync · All card data stored in your own iCloud private database · Zero access by the developer ■ Multiple Cards (Pro) · Manage residence cards for your entire family · Add custom labels to each card ■ Pro App Icons (Pro) · Choose from Night and Dawn alternate icons 【Privacy】 Camera is used solely for on-device OCR. Images and scan results are never transmitted. No personal data collected, no ads, no third-party SDKs. 【Languages】 日本語 · English · 简体中文 · 繁體中文 · 한국어 Built-in renewal window timelines and processing day estimates for each visa category. Stay ahead of your expiry — Zairyu reminds you before it's too late.

About

Sign In Authenticator

Features
Read full description

Protect your accounts with a second step at sign-in. When a website asks for an authenticator code, Sign In keeps it ready. Add your account once, then open the app for a fresh code whenever you sign in. No Sign In account or registration required. EASY TO SET UP Turn on two-factor authentication in a service's security settings, choose its authenticator-app option, and scan the QR code with Sign In. You can also enter a setup key manually. YOUR CODES, READY WHEN YOU NEED THEM Find your accounts in one clear list and tap to copy a code. Codes are generated on your device and work without an internet connection after setup. Compatible with services that support standard time-based one-time passwords (TOTP). IN SYNC ON IPHONE AND IPAD With Sign In Pro, use iCloud Keychain backup and sync to keep your accounts available across your iPhone and iPad. Both devices must use the same Apple Account with iCloud Keychain enabled. PROTECTION YOU CONTROL Store your setup keys in Apple Keychain. With Sign In Pro, lock the app with Face ID, Touch ID, or your device passcode, depending on your device. Import supported authenticator backups or export a recovery copy. Manual text and QR exports are not encrypted, so store them securely. START WITH TWO ACCOUNTS FREE The free plan includes up to two accounts and import/export. Sign In Pro adds unlimited accounts, app lock, and iCloud backup and sync. If your subscription ends, existing accounts and codes remain accessible, and app lock or backup you already turned on stays on; adding accounts beyond the free allowance, or turning those features on again, requires Pro. Sign In Pro is available as a weekly or yearly auto-renewable subscription. Prices and any available introductory offers are shown before purchase. Payment is charged to your Apple Account. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in your Apple Account subscription settings. Restore Purchases is available in the app. Privacy Policy: https://www.usesignin.com/privacy.html Terms of Use: https://www.usesignin.com/terms.html Support: support@usesignin.com

Screenshots

在留 Zairyu4 screens
Sign In Authenticator3 screens

Verdict

The call

The clearest difference is update cadence: Sign In Authenticator at weekly against 在留 Zairyu's fortnightly. 在留 Zairyu's advantage is iOS requirement (16.0 vs 18.0). On price, ads, in-app purchases and device support 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. 在留 Zairyu sells 1 one-off in-app purchase and Sign In Authenticator sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

在留 Zairyu ships an update fortnightly, Sign In Authenticator weekly. The most recent releases landed on November 10, 2026 and November 12, 2026 respectively.

Scorecard2 real differences · 6 level
在留 Zairyu versus Sign In Authenticator: the parameters behind the verdict, then further details
Parameter在留 ZairyuSign In Authenticator
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better18.0
Further details — not scored
Size4 MB27 MB
Age rating4+4+
DeveloperTOMONARI NATSUKAWAGetProAct Inc.

In-app purchases

1 purchases

在留 Zairyu

One-time1
  • Zairyu Pro$3.99
2 purchases

Sign In Authenticator

Subscriptions2
  • Sign In Pro Weekly3 Days trial$6.997 Days
  • Sign In Pro Yearly$49.991 Year

Questions

Is 在留 Zairyu free?
在留 Zairyu is free to download, with in-app purchases available.
Is Sign In Authenticator free?
Sign In Authenticator is free to download, with in-app purchases available.
Do 在留 Zairyu or Sign In Authenticator have ads?
Neither 在留 Zairyu nor Sign In Authenticator shows ads.
Which is updated more often, 在留 Zairyu or Sign In Authenticator?
在留 Zairyu ships an update fortnightly, and Sign In Authenticator weekly. Most recently, 在留 Zairyu was updated on November 10, 2026 and Sign In Authenticator on November 12, 2026.

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