Comparison

OBS vs K.ai

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

Head to head
About

OBS

Transform your iPhone or iPad into a high-quality webcam for OBS Studio. Connects instantly over your local network with no drivers or complex setup needed. Ideal for streamers, professionals, and presenters seeking stable video.

Highlights
  • Use iPhone/iPad as webcam for OBS
  • High quality, low latency video
  • Instant one-tap connection
  • Simple OBS integration
  • Works on macOS and Windows
  • No login or ads
Features
Read full description

Use your iPhone or iPad as a camera for OBS. Camera Studio is built for live streams, recordings, classes, and presentations when you want a stable camera source from the device you already have. WHAT YOU CAN DO • Start a live camera with one tap • Switch front and rear cameras • Adjust focus, exposure, zoom, and torch • Capture microphone audio and mute when needed • Use a grid overlay to frame your shot • Follow the built-in USB setup guide for macOS, Windows, and Linux An In-App Purchase is required before you can use the app. After purchase, connect a USB cable, tap Start Camera, and add your device in OBS as a Video Capture Device. No account and no extra computer driver required. HOW IT WORKS 1. Open Camera Studio, complete Get Started, and unlock the app with an In-App Purchase or Restore Purchases. 2. Connect your iPhone or iPad to your computer with a genuine Lightning or USB-C cable. 3. Tap Start Camera. Allow Camera and Microphone access when asked. 4. In OBS Studio, add a Video Capture Device source and select your device. Video and audio stay on your device and the computer you connect. This app does not upload your camera feed to a developer server. WHO IT IS FOR Creators, presenters, teachers, and anyone who uses OBS Studio to stream or record and wants a simple wired camera from iPhone or iPad. OBS Studio is independent software from the OBS Project. Camera Studio is not affiliated with, endorsed by, or sponsored by the OBS Project. IN-APP PURCHASES An In-App Purchase is required to use Camera Studio. The camera, USB source, and in-app controls are available only after you unlock Pro. Unlock options: • Auto-renewable weekly, monthly, or yearly subscription • One-time lifetime purchase Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends. Manage in Settings. Restore Purchases is available in the app. Refunds for App Store purchases are handled by Apple. PRIVACY POLICY https://sites.google.com/view/cam-obs-privacy TERMS OF USE https://sites.google.com/view/cam-obs-terms STANDARD EULA https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Download Camera Studio and use your iPhone or iPad as a wired camera for OBS.

About

K.ai

Features
Read full description

Kai is a private AI assistant. Kai does RAG on your Mac. Kai also gives you AI answers when you are away from your desk. There is no sign-up. Your account is an anonymous key. Your phone makes the key. Open the app and ask a question. Type the question, or speak it in a natural conversation. Your chats stay only on your device. Kai deletes them after 7 days. Our servers keep no logs. Your RAG data stays on the Mac at your home. PRIVACY • Kai never stores your questions, photos, documents, or voice audio. • Your phone removes private data from a document before it sends the document. Names, ID numbers, and account details become anonymous placeholders. • Back up your key to iCloud. Your balance is safe if you lose your phone. One tap clears all your data at any time. A REAL CONVERSATION • Talk without your hands. Kai listens, answers out loud, and stops when you speak. • Use interpreter mode. Select two languages. Kai translates both directions while you talk. • Kai understands and answers in all major languages. You can select from five voices. USEFUL EVERY DAY • Kai finds current answers from the web. Kai also uses the linked folders on your Mac (RAG). • Attach photos and documents in one question. Kai understands PDF, Word, Excel, PowerPoint, and more. • Kai makes and changes images. • Share a web page to Kai. Kai reads the page aloud. • Ask Kai from Siri, Shortcuts, or the Action button. • Export any answer. Send it to your Mac with AirDrop, or save it to a file. HONEST PRICING • You receive $5 of welcome credit. • There is no subscription. You buy prepaid credit only when you want to. • Kai shows the exact cost of each answer. An answer usually costs about one cent. • Hard questions use our most capable models.

Screenshots

OBS3 screens
K.ai4 screens

Verdict

The call

The clearest difference is update cadence: K.ai at daily against OBS's every 7 months. OBS's advantage is iOS requirement (15.0 vs 17.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OBS sells 4 in-app purchases, starting at $4.99 per 7 days and K.ai sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

OBS ships an update every 7 months, K.ai daily. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
OBS versus K.ai: the parameters behind the verdict, then further details
ParameterOBSK.ai
PriceFreeFree
Rating4.4 (435 ratings) — better—
Positive reviews10.7% of reviews—
Number of ratings435 — better—
Update frequencyEvery 7 monthsDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size4 MB53 MB
Age rating4+4+
DeveloperDREAMEE STUDIO COMPANY LIMITEDNull Research LLC

In-app purchases

4 purchases

OBS

Subscriptions3
  • Weekly camera access$4.997 Days
  • Monthly camera access$9.991 Month
  • Yearly camera access$14.991 Year
One-time1
  • Lifetime camera access$17.99
3 purchases

K.ai

One-time3
  • Small Credit Pack$9.99
  • Medium Credit Pack$24.99
  • Large Credit Pack$49.99

Questions

Is OBS free?
OBS is free to download, with in-app purchases available.
Is K.ai free?
K.ai is free to download, with in-app purchases available.
Do OBS or K.ai have ads?
Neither OBS nor K.ai shows ads.
Which is updated more often, OBS or K.ai?
OBS ships an update every 7 months, and K.ai daily. Most recently, OBS was updated on October 19, 2026 and K.ai on October 7, 2026.

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