Comparison

Duet Air vs Eidica

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

Head to head
About

Duet Air

Transform your iPad or iPhone into an advanced remote desktop or an extra display for your Mac or PC. Experience unparalleled performance and zero lag, with touch and gesture support. Offers professional-grade drawing capabilities with Apple Pencil integration for artists and designers.

Highlights
  • Remote desktop functionality
  • Extra display for Mac/PC
  • Touch and gesture support
  • Apple Pencil integration for drawing
  • Wireless and wired connectivity
  • Zero lag performance
Read full description

#1 best-selling iPad app in US, Japan, UK, Germany, and 17 other countries! Duet turns your iPad or iPhone into the most advanced Remote Desktop or extra display for your Mac & PC. Developed by a team of ex-Apple engineers, Duet offers unparalleled performance and display quality - all with zero lag. — DO MORE — Be twice as productive by multitasking with two screens. And for those that travel, have a portable way to stay productive. — INCREDIBLY SIMPLE — To get started, plug your iPad into your desktop using your charging cable or choose the desktop to wirelessly connect to. The Duet desktop app will automatically detect your device, and transform it into a high performance touchscreen display. — TOUCHSCREEN — Interact with Mac & PC like never before, with touch & gestures, including two-finger scrolling, pan and zoom. And with our latest release, you can even add a touch bar to any iPad with any Mac. — PERFECT FOR APPLE PENCIL — With Duet Pro, you can turn your iPad and Apple Pencil into a professional graphics tablet. We’ve re-engineered our rendering algorithms for ultra-responsive drawing, optimized specifically for designers, illustrators and artists. Duet Pro also unlocks pressure & tilt sensitivity, hover, palm rejection, and more to seamlessly draw in the most powerful programs for professionals. Get precise control in Photoshop, Corel Painter, Lightroom, ToonBoom, Illustrator, Manga Studio and more. — PRESS — TechCrunch - "Feels Like Magic" TIME - "Getting Work Done Faster and More Efficiently" The Guardian - "Lag-free" Forbes - "The simple thing to note is this...Duet Display works." The Verge - "Glorious Fluidity" Lifehacker - "It's fast, easy to use, and works great" Business Insider - "Zero lag and true retina resolution” Wall Street Journal - “It’s as easy as just plugging it in" — REVIEWS — “Awesome! My iPad Pro can be an extra monitor! Cool app” ~CEO of T-Mobile, John Legere “Very smooth and responsive indeed, plus you could use the touch screen to “click” on screen interfaces!” ~Photographer, Lok Cheung “Love the ability to use my iPad as a monitor with Duet.” ~Former Chief Evangelist of Apple, Guy Kawasaki “Just started using this app called Duet… Kinda love it so far.” ~Comedian and Youtube, Phillip DeFranco “All my mac folks look at the Duet app… GREAT!” ~Actor and Comedian, Sinbad "I really like the app, I suppose the biggest compliment I can give is that it's so easy to setup it almost seems like an Apple product.” ~Early Adopter, M. Nightingale "Amazing solution for me by the way. Works as I was hoping for and actually my main reason for getting an iPad : )” ~Early Adopter, M. Gemzoe Duet Works With: All iPhones and iPads with iOS 11.0 and later All Macs with 10.11 (Mavericks) and later All PCs with Windows 10 64-bit and later Duet Air is a $24.99 per year service built for professionals and remote workers. Price may vary by location. Duet Air subscriptions will be charged to your credit card through your iTunes account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You will not be able to cancel the subscription once activated. Manage Duet Air in Account Settings after the optional upgrade. Learn more at http://www.duetdisplay.com Terms: https://help.duetdisplay.com/duet-terms-services Privacy Policy: https://help.duetdisplay.com/duet-privacy-policy

About

Eidica

Read full description

"Why did I take this photo?" We all take photos to remember something: a parking spot, a product we liked, an important document, or just a moment we don’t want to forget. But if you don’t write a note right away, that photo will mean nothing days later. That’s why Eidica exists. The moment you take a photo or video, a note card appears. Write down why you captured it. Your media isn’t saved to iPhone Photos; it stays safely inside Eidica. This keeps your Photo Gallery for memories only, while everything else stays organized in Eidica. Try all features free for 7 days. No automatic charging. Your trial will not turn into a paid subscription unless you manually choose a plan. MAIN FEATURES Add notes instantly while taking photos or videos. Organize your notes into custom folders. Lock the app or folders with Face ID. View notes on a map with Apple Maps integration. Set reminders for important notes. Securely back up with iCloud and restore on new devices. Add up to 5 media files per note (1 video, up to 30 seconds). Search by location to find notes easily. Quickly add notes to screenshots to save ideas, messages, or reminders. Add notes to existing photos and videos from your gallery directly into Eidica. Maximum privacy: No account, no email. Your data stays on your device; the app can auto-lock when sent to background. Eidica is your second visual memory, quiet, organized, and completely yours. Take photos not to forget, but to remember. Subscription & Purchase Information Eidica offers a 7-day free trial. Your trial will NOT automatically renew into a paid subscription. You will only be charged if you explicitly choose one of the following options after your trial: Monthly Subscription: Full access with a flexible monthly plan. Yearly Subscription: Full access with a discounted annual plan. Lifetime Purchase: Pay once and own all features forever with a single one-time payment. Important Details: Prices are shown in the App Store according to your country. Payment will be charged to your iTunes account only after you confirm your choice. If you choose a subscription (Monthly/Yearly), it will automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscriptions anytime from your App Store account settings.

Screenshots

Duet Air3 screens
Eidica4 screens

Verdict

The call

The clearest difference is ads: Eidica at none against Duet Air's shown. Eidica also leads on update cadence (every 10 days vs every 3 weeks). Duet Air's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.6). On price and in-app purchases 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. Duet Air sells 2 in-app purchases, starting at $49.99 per year and Eidica sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Duet Air ships an update every 3 weeks, Eidica every 10 days. The most recent releases landed on October 22, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
Duet Air versus Eidica: the parameters behind the verdict, then further details
ParameterDuet AirEidica
PriceFreeFree
Rating4.3 (1.9K ratings) — better—
Positive reviews23.8% of reviews—
Number of ratings1.9K — better—
Update frequencyEvery 3 weeksEvery 10 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better18.6
Further details — not scored
Size67 MB121 MB
Age rating4+4+
DeveloperDuet, Inc.Behcet Samet Baydar

Bugs and requests

Duet Air

Reported bugs

5 issues
  • Incompatible with Citrix
  • Breaks Windows network
  • Bricked user's PC
  • Login screen issues
  • Inconsistent performance

Requested features

5 requests
  • Support for older devices
  • Improve wireless stability
  • Add audio support
  • Better integration with drawing apps
  • Easier subscription cancellation

Eidica

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Duet Air

Subscriptions2
  • Duet Air (Annual)7 Days trial$49.991 Year
  • Duet Pro (Annual)7 Days trial$79.991 Year
3 purchases

Eidica

Subscriptions2
  • All Access$2.991 Month
  • All Access$19.991 Year
One-time1
  • Full Access (Lifetime)$29.99

Questions

Is Duet Air free?
Duet Air is free to download, with in-app purchases available.
Is Eidica free?
Eidica is free to download, with in-app purchases available.
Do Duet Air or Eidica have ads?
Duet Air shows ads; Eidica does not.
Which is updated more often, Duet Air or Eidica?
Duet Air ships an update every 3 weeks, and Eidica every 10 days. Most recently, Duet Air was updated on October 22, 2026 and Eidica on October 13, 2026.

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