Blue Hour vs Cortez Duo
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Blue Hour
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Blue Hour turns time into light: a sun sinks toward the horizon as your timer runs, so you can feel how much is left without reading a number. Built kindly for ADHD and time-blindness, calm enough for classrooms and kids. No account, no ads, no streaks. Free forever, with a tip jar in Settings. RAISE THE SUN Drag the sun up to set your time, one minute to three hours, with soft detents you can feel. Prefer numbers? Tap the readout for a keypad. Three preset chips keep your rituals one tap away. THE SETTLING DUSK As the last light falls, the sky deepens and the screen dims a few gentle stops. At zero: two slow breaths of glow, a soft haptic, and an optional two-note chime. No alarm slam. Ever. THE LIGHT FOLLOWS YOU A Live Activity keeps the sinking sun on your Lock Screen and in the Dynamic Island. An optional nudge can tell you when time is up, even if you have looked away. Off by default. CYCLES, GENTLY Pomodoro in Blue Hour's language: work while the sun sets, then the break is a sunrise. The sky returns to morning, and the next round starts when you do. Rounds are counted in little suns, never quotas. START FROM ANYWHERE A Home Screen widget starts your usual timer in one tap. Siri and Shortcuts can start, pause, and resume without opening the app. FOR CLASSROOMS One tap opens the big display: a wall-sized countdown calm enough for a whole room, with a classroom preset set from one to twenty minutes. A QUIET LINE EACH DAWN Every day the idle sky carries one line from 412 public-domain quotations. Seneca, Thoreau, Lao Tzu, old proverbs. One per day. No feed, no push, no hustle. CALM BY CONSTRUCTION ⢠Optional halfway and final-minute cues ⢠Keeps the screen awake while the light falls, if you want ⢠Wall-clock accurate: background it, come back, the light agrees ⢠VoiceOver, Reduced Motion, and Dynamic Type are first-class FREE FOREVER Every feature, free. No premium tier, no subscription. If Blue Hour earns a place on your Home Screen, there is a tip jar in Settings. It unlocks nothing. PRIVATE BY ARCHITECTURE No account. No analytics. No tracking. Blue Hour makes zero network calls, and its App Store privacy label is "Data Not Collected," the rare kind that means exactly what it says. The light keeps track for you.
Cortez Duo
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Cortez Duo turns your iPhone or iPad into a Bluetooth keyboard and trackpad for any Mac you can see. Pair once, point your phone at the screen, and type, scroll and click. NOTHING TO INSTALL ON THE COMPUTER Cortez Duo shows up as a standard Bluetooth keyboard and trackpad. No app, driver or helper runs on the Mac. If a keyboard is allowed, Cortez Duo is allowed. WHAT IT DOES ⢠Keyboard. A full keyboard with modifier keys and macOS key bindings. ⢠Trackpad. Use your phone's screen as a precision trackpad and scroll surface. ⢠Fill password. On a Safari login page, Cortez Duo turns on VoiceOver on the Mac, finds the username and password fields through the camera, types the password you choose from your iOS AutoFill behind Face ID, and turns VoiceOver off again. The password leaves your phone only as keystrokes over Bluetooth. PRIVACY Cortez Duo has no account and no server, and it makes no network requests. The camera shows you the screen you are pointing at; anything it reads is read on your phone and never uploaded. No analytics, no ads, no third-party SDKs. Erase everything the app stores from Settings > Privacy & Data. WHAT YOU NEED ⢠iPhone or iPad running iOS 26.2 or later ⢠A Mac with Bluetooth, paired once as a keyboard Privacy policy: cortez.is/private Terms: cortez.is/terms Support: cortez.is/support Cortez Duo is made by RALL DIGITAL LLC.
Screenshots
Verdict
The clearest difference is in-app purchases: Cortez Duo at none against Blue Hour's 3. On price, ads, device support 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. Blue Hour sells 3 one-off in-app purchases. Cortez Duo asks for nothing beyond the download.
| Parameter | Blue Hour | Cortez Duo |
|---|---|---|
| Price | Free | Free |
| Update frequency | ā | Every 10 days |
| Ads | No | No |
| In-app purchases | Yes | No ā better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 ā better | 26.2 |
| Further details ā not scored | ||
| Size | 3 MB | 22 MB |
| Age rating | 4+ | 17+ |
| Developer | Moses Smith | Rall Digital |
In-app purchases
Blue Hour
- Coffee$1.99
- Lunch$4.99
- Legend$9.99
Cortez Duo
No in-app purchases









