Keya Authenticator vs Hourline
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Keya Authenticator
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Your passwords alone aren't enough. Every account worth protecting deserves a second lock, one that never phones home. Keya Authenticator generates secure one-time codes for any site that supports two-factor authentication, with no account to create, no server to trust, and no subscription to cancel. PRIVATE BY DESIGN Every secret you add stays in the iOS Keychain, encrypted, locked to your device, and invisible the moment your screen goes dark. Keya Authenticator has zero network entitlements, so it physically cannot connect to the internet. NEVER RACE THE CLOCK Most authenticator apps leave you scrambling when a code is about to expire. Keya shows you the next code before the current one runs out, so you always have time to type it in. BIOMETRIC UNLOCK Protect your codes with Face ID or Touch ID, with a PIN fallback always available and automatic lockout after repeated wrong attempts. EASY TO SWITCH Moving from another app is painless: import directly from Google Authenticator, Aegis, 2FAS, Raivo, andOTP, or LastPass, or just scan any standard QR code. ENCRYPTED BACKUPS Export your entire vault as an AES-256-GCM encrypted backup and store it anywhere you like. No cloud account required. OPEN SOURCE Every line of code is publicly available on GitHub under the GPL v3 license, so you can read it, audit it, or build it yourself. That's what trust through transparency actually looks like. FREE, FOREVER There are no ads, no subscription, and no freemium tricks: every feature is available from day one. A voluntary tip jar is the only way to support development, and it's entirely optional. WORKS WITH EVERYTHING Google, GitHub, Apple, Microsoft, Dropbox, Amazon, Discord, and hundreds more: any service built on TOTP (RFC 6238) or HOTP (RFC 4226) works here.
Hourline
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Hourline is a world clock and time zone app for iPhone, iPad, and Apple Watch, designed like a living poster. The city you care about fills the screen: its time in large numerals beside the red hour line, the date, a rolling seconds drum, its day length, sunrise and sunset, and the weather. The whole page is that city's scene, its sky right now and its landmark, with the sun where it stands or the moon and stars at night, and the city's rain, snow, cloud, or fog over it. Drag across the page to turn the city's day to another hour, tap the weather for its forecast, and share the page as a postcard or a story. Switch between 12- and 24-hour time, and between a light and a night look, with a tap. World Time lists your cities as cards, each with its landmark under its own sky, its offset, local time, and weather. Choose one and a follow spot swings over to it. Hold a card to move it, and swipe it left to remove it. Drag the ruler of your own day to see every city at another moment, with your calendar's events on it if you like, and plan an event on any city's clock to add to your calendar or send to the others. Turn to the map to see day and night across the world, with your cities on the red hour line, and drag the map or the UTC ruler from one city to the next. Widgets bring it to your Home Screen and Lock Screen: ⢠Clock: one city's time, set like the app. ⢠World Time: your cities as cards. ⢠Hour Line: the map around a city, its country filled in, night shaded. ⢠City Time for the Lock Screen. ⢠Landmark, with Hourline Pro: the city's landmark under its sky right now, in three sizes. A Live Activity keeps up to three cities on the Lock Screen and in the Dynamic Island. Apple Watch shows each saved city under its own sky and landmark, led by its weather. Keep city clocks, weather and landmarks on your watch face with complications and in the Smart Stack. Details that matter: ⢠Real time zones and daylight saving time from the system. ⢠Sunrise, sunset, and day length calculated for each city. ⢠Weather from Apple Weather. ⢠199 cities, each with its own landmark illustration. ⢠Quiet sounds of wood, paper, and brass, which you can turn off. ⢠No ads and no tracking. Your cities stay on your device. CITY STROLL (iOS 27) On an iPhone or iPad that supports Apple Intelligence, open City Stroll from a city's clock. Leo, Jack, and Mia share a fictional conversation as they explore real places in the city. Discovered stops appear on a map, while local time and available weather give the conversation context. The first three lines are free; Hourline Pro lets the stroll continue. Availability varies by device, language, and region. HOURLINE PRO Hourline is free with up to six cities and the weather of the city on your clock. Hourline Pro keeps as many cities as you like and brings every city's weather, with its forecast hour by hour and for ten days. It lets City Stroll go on for as long as you like, adds the Landmark and City Stroll widgets, and adds the events you plan across your cities to your calendar. Choose Yearly, an auto-renewing subscription, or Lifetime, a single purchase. Payment is charged to your Apple Account when you confirm the purchase. A subscription renews automatically unless it is canceled at least 24 hours before the end of the current period, and your account is charged for the renewal within the 24 hours before the period ends. Manage or cancel subscriptions in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://iamwilliamli.github.io/hourline-app/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: Hourline at daily against Keya Authenticator's every 3 weeks. Hourline also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Keya Authenticator sells 3 one-off in-app purchases and Hourline sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Keya Authenticator ships an update every 3 weeks, Hourline daily. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.
| Parameter | Keya Authenticator | Hourline |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Daily ā better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad, Apple Watch ā better |
| Requires iOS | 18.0 | 18.0 |
| Further details ā not scored | ||
| Size | 3 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Eldar SHAIDULLIN | ęē¦ ę |
In-app purchases
Keya Authenticator
- Coffee$2.99
- Pizza$9.99
- Family Dinner$29.99
Hourline
- Hourline Pro Monthly$0.991 Month
- Hourline Pro Yearly$7.991 Year
- Hourline Pro Lifetime$17.99









