Jo — From camera roll to carousel

Build Instagram carousels straight from your macOS Photos Library. Pick the keepers, set the order, post the trip.

Carousels without the design tool

Jo is a native macOS app for building Instagram carousels. Your Photos Library on the left, your carousel on the right — both steps in one window. Purpose-built for the carousel format with 4:5 and 9:16 frames, numbered slides, and cover overlays.

Four steps. One window.

  1. Import. Open your Photos library or drag files in.
  2. Select. Pick the shots. Set the order.
  3. Frame. Crop each slide. Reframe for 4:5 or 9:16.
  4. Export. Save back to Photos, Files, or the clipboard — ready for Instagram.

Why Jo

  • Starts in your Photos library. Reads straight from Photos. No importing, no folders, no duplicates on disk.
  • Shaped for carousels. 4:5 frames, numbered slides, cover overlays. Nothing else.
  • Photos stay on your Mac. No account, no cloud, no upload. The trip never leaves the laptop.

Also includes

  • Multiple profile support
  • Full undo/redo history
  • Auto-save
  • Post (4:5) and Story (9:16) format support

Pricing

One-time purchase on the Mac App Store. No subscription, no in-app purchases. Requires macOS 14 Sonoma or later.