Duet Air vs ObGitSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Remote desktop functionality
- Extra display for Mac/PC
- Touch and gesture support
- Apple Pencil integration for drawing
- Wireless and wired connectivity
- Zero lag performance
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#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
ObGitSync
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ObGitSync keeps a folder of Markdown notes in step with a Git repository, straight from your iPhone — no desktop, no subscription, no server in the middle. It is built for people who already keep their notes in git and want the same control on mobile: not one opaque "sync" button, but real git, one step at a time. SIGN IN AND GO • Sign in with GitHub — no password typed into the app, and the token stays in the iOS Keychain • Browse your repositories and clone one with a tap • Or point it at any Git host over HTTPS with an access token REAL GIT, NOT AN IMITATION • Commit, Fetch, Merge and Push as separate actions — run one, or run all four in order • Read the diff before you commit, and the diff of any past commit • Browse the commit history, with unpushed commits clearly marked • Write your own commit message • Switch and create branches • Choose merge or rebase per vault • Resolve conflicts in the app: keep yours, keep theirs, or keep both • Discard a single file, or every local change, back to its committed state • Built on libgit2 — the same engine desktop git tooling uses BIG FILES WELCOME • Full Git LFS support: large files are committed as pointers and their content streamed separately, so a vault with files far past GitHub's 100 MB limit still syncs on a phone • Transfers never load an object into memory WORKS THE WAY YOUR NOTES APP DOES • Point ObGitSync at the folder your notes app already uses, and it writes straight into it • A conflict never blocks a sync unless you ask it to • Several vaults at once, each with its own repository, folder and token AUTOMATIC WHEN YOU WANT IT • Sync when the app opens, and on a schedule from every 15 minutes to once a day • Choose what unattended runs do: fetch only, fetch and merge, or a full two-way sync • Shortcuts and Siri actions for every step, plus a URL scheme, so you can build your own routine YOURS ALONE • Your notes, your token and your vault never leave the device except to talk to your own Git repository over HTTPS • No account with us, no analytics, no servers, nothing collected English and 简体中文. Light, dark, or follow the system. ObGitSync is an independent app. It is not affiliated with, endorsed by, or sponsored by Obsidian (Dynalist Inc.) or GitHub, Inc.
Screenshots
Verdict
The clearest difference is update cadence: ObGitSync at daily against Duet Air's every 3 weeks. Duet Air's advantage is iOS requirement (12.0 vs 26.0). 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
Both are free to download. Duet Air sells 2 in-app purchases, starting at $49.99 per year and ObGitSync sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Duet Air ships an update every 3 weeks, ObGitSync daily. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.
| Parameter | Duet Air | ObGitSync |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (1.9K ratings) — better | — |
| Positive reviews | 23.8% of reviews | — |
| Number of ratings | 1.9K — better | — |
| Update frequency | Every 3 weeks | Daily — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 67 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Duet, Inc. | 星 王 |
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
ObGitSync
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Duet Air
- Duet Air (Annual)7 Days trial$49.991 Year
- Duet Pro (Annual)7 Days trial$79.991 Year
ObGitSync
- Remove Ads$0.99









