Comparison

3 Day Blinds 1.0 vs DuoCorder+

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

Head to head
About

3 Day Blinds 1.0

Automate and control your window treatments remotely. Schedule timers for natural light and privacy, and operate shades individually or in groups. Personalize your rooms with custom photos.

Highlights
  • Real-time remote control
  • Set scenes and timers
  • Automate window treatments
  • Individual and group shade control
  • Personalize room photos
Features
Read full description

'Effortlessly control your 3 Day Blinds window treatments in real time from virtually anywhere in the world. Set scenes and timers to automate your products and make everyday life easier. Key Features - Compatible with 3 Day Blinds motorized window treatments - Control your shades from any connected device, even when you’re away - Schedule automatic timers to manage natural light and control privacy throughout the day - Operate Shades individually or group multiple shades together for greater ease of use - Personalize with your own photo for each room or use ours - Requires the use of a 3 Day Blinds USB Wireless Hub

About

DuoCorder+

Transform your iPhone into a handheld sensor scanner. Explore environmental data like sound, air pressure, and magnetic fields with a retro-futuristic interface. Set custom alerts and track 24-hour trends for your sensor readings.

Highlights
  • Live sensor scanning
  • Retro-futuristic display
  • Customizable alerts
  • 24-hour trend charts
  • Metal detector mode
  • Data export (CSV)
  • Privacy-focused design
Features
Currently charting
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DuoCorder turns your iPhone into a handheld sensor scanner. See what your phone can sense about the world around you, live, on one retro-futuristic display. ONE-TAP FULL SCAN Press SCAN and DuoCorder samples every sensor for ten seconds, then explains what it found in plain language: "No magnetic anomalies", "Air pressure falling", "Conversation-level sound". Save the report or share it. MORE THAN A DOZEN LIVE INSTRUMENTS • Motion: acceleration, rotation, tilt and a bubble level • Compass: true and magnetic heading, 3-axis magnetic field strength • Air pressure: barometer, sea-level pressure, altitude change, pressure trend (iPhones with a barometer) • Light: ambient light level estimated from the camera's exposure • Sound: level in decibels, a live spectrum, and a scrolling spectrogram • Pitch: names the strongest note you hear, with how sharp or flat it is • Position: coordinates, speed, course, accuracy and the nearest place name • Activity: steps, distance, floors climbed, cadence and pace • Bluetooth radar: nearby devices, signal strength and a rough range estimate • Your phone: battery, CPU, memory, storage, temperature and network METAL DETECTOR MODE Sweep the phone slowly and listen. The tone rises in pitch and the haptic ticks speed up as the magnetic field changes near metal. YOUR OWN ALERTS Create rules such as "pressure falling faster than 2 hPa/hour", "magnetic field above 70 µT" or "battery below 20%". DuoCorder chirps, buzzes and flashes the screen when one triggers, and keeps a history of recent alerts. Alerts work while the app is open. 24-HOUR TRENDS DuoCorder records your readings while it is open and keeps the last 24 hours. Chart any sensor over 5 minutes to a full day, drag to inspect values, and see your alert thresholds on the chart. SNAPSHOTS AND SHARING Save a snapshot of any page, with your location, then browse your log or export everything as a CSV file. Share a full readable report in one tap. EASY TO LEARN Tap any reading to see what it means, view its trend or set an alert. A quick guide explains the controls, and every button is clearly labelled. BUILT FOR BIG AND FOLDABLE SCREENS The layout fills iPhone, iPad and wide two-panel displays, with the display on top and the keys below. PRIVATE BY DESIGN Everything stays on your device. There are no accounts, no ads, no analytics and no tracking. The microphone, camera and Bluetooth run only while the page or scan that needs them is open. Sound is analysed live and never recorded. The camera is used only for its light reading, and no photos or video are saved. GOOD TO KNOW Readings come from your phone's built-in sensors and are approximate. Which sensors you see depends on your device; for example, the barometer is not in every iPhone. DuoCorder is for curiosity and learning, not for medical, safety, navigation or professional use.

Screenshots

3 Day Blinds 1.04 screens
DuoCorder+4 screens

Verdict

The call

The clearest difference is price: 3 Day Blinds 1.0 at Free against DuoCorder+'s $2.99. 3 Day Blinds 1.0 also leads on ratings volume (1.4K vs 1) and iOS requirement (12.0 vs 17.0). DuoCorder+'s advantage is rating (5.0 vs 3.8) and chart position (#59 vs unranked). On 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

3 Day Blinds 1.0 is free to download; DuoCorder+ costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

DuoCorder+ holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: 3 Day Blinds 1.0 has 1.4K ratings behind it against 1, so its average is the more settled of the two.

Scorecard6 real differences · 5 level
3 Day Blinds 1.0 versus DuoCorder+: the parameters behind the verdict, then further details
Parameter3 Day Blinds 1.0DuoCorder+
PriceFree — better$2.99
Rating3.8 (1.4K ratings)5.0 (1 ratings) — better
Positive reviews18.6% of reviews—
Number of ratings1.4K — better1
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank—#59 — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size244 MB1 MB
Age rating4+4+
Developer3 Day BlindsJames Roche

Customer experience

3 Day Blinds 1.0

All ratings1,241 ratings
Positive67.4%
Neutral6.0%
Negative26.6%
Written reviews156 reviews
Positive18.6%
Neutral12.2%
Negative69.2%

DuoCorder+

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

Bugs and requests

3 Day Blinds 1.0

Reported bugs

4 issues
  • App fails to connect to hub
  • Timers and schedules not working as expected
  • Blinds not responding to app commands
  • Scenes and settings randomly disappearing

Requested features

4 requests
  • Add more advanced scheduling options
  • Improve app stability and reliability
  • Provide better battery life monitoring
  • Enhance integration with smart home platforms

DuoCorder+

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

3 Day Blinds 1.0

No in-app purchases

None

DuoCorder+

No in-app purchases

Questions

Is 3 Day Blinds 1.0 free?
3 Day Blinds 1.0 is free to download, with no in-app purchases.
Is DuoCorder+ free?
DuoCorder+ costs $2.99, with no in-app purchases.
Which has better reviews, 3 Day Blinds 1.0 or DuoCorder+?
DuoCorder+ is rated higher. 3 Day Blinds 1.0 averages 3.8 out of 5 from 1.4K ratings, while DuoCorder+ averages 5.0 from 1 ratings.
Do 3 Day Blinds 1.0 or DuoCorder+ have ads?
Neither 3 Day Blinds 1.0 nor DuoCorder+ shows ads.

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