Replace Character
Upload a source video and a person or character image, then let Swap Cast replace the person while keeping motion and scene context aligned.
New: AI Influencer and Replace Anything
Swap Cast: AI Video
Design your own AI character, then put it in any video. Swap Cast turns images, reference videos, and text prompts into finished clips: replace people and objects with Replace Anything, build a reusable character with AI Influencer, or start from Motion Control, Transition, Text to Video, Image to Video, and Create Image. Every result lands in the built-in Library.
iPhone and iPad
AI Influencer + Replace Anything
See a character made with AI Influencer in a real clip.
This character was designed with AI Influencer, then swapped into a phone video of a busy street with Replace Anything. The crowd, camera movement, and lighting all come from the original footage. Press play to watch it with sound.
New in Swap Cast
Design a character, then put it anywhere.
AI Influencer builds a consistent character from presets or your own description. Replace Anything swaps people, clothes, and objects in any clip with that character, a photo, or a few words.
AI Influencer
Build a character sheet in one tap.
Pick a look in each row, from character type, gender, and build to hairstyle, style, shoes, and age, or switch to Custom and describe your own. Swap Cast draws one sheet with full-body views and close-ups, ready to reuse in every other tool.
- Presets, or a custom prompt with an optional photo
- Average, bold, and extreme looks, plus fantasy types like elf, vampire, and cyborg
- Saved under Characters in every image picker
Replace Anything
Change what is in the video. Keep everything else.
Pick a clip and Swap Cast finds the people and objects in it. Tap up to four to replace, each with a reference image, a short description, or both. Motion, camera, and lighting stay as they were.
- Automatic detection of people, clothes, and props
- Standard 720p or Full HD 1080p output
- Keep the original sound or let AI Audio create new sound
Motion Control
Use a reference video plus an image to drive character movement with Kling 3.0 motion control, including Standard and Pro quality options.
Transition
Select a start image, an end image, and an optional prompt. The app creates a five-second smooth transition powered by Kling image-to-video.
Themed Videos
Start from visual themes such as Sports Broadcast and Paddock TV Broadcast, choose an image, and generate polished social-ready clips.
Built-in Image Editing
Edit an image or the first frame before generation, keep a visual version history, and use the selected edit directly in the video workflow.
Text to Video
Write a prompt, choose duration, aspect ratio, quality, and audio settings, then generate a video directly from text.
Image to Video
Transform a still image into a moving video with prompt direction, duration controls, quality choices, and optional audio.
Library
Use the Library tab to browse videos and images, check Done, Draft, Failed, and Running states, and reopen generated work.
Creator workflow
Upload, refine, generate, and keep your results organized.
Swap Cast is designed for repeat creative iteration. The app keeps inputs, edited images, generation status, and final output close together so you can move from idea to result without switching tools.
1
Choose a task from Explore
Pick a themed video card or a model such as Motion Control, Transition, Replace Character, Animate Character, Text to Video, or Image to Video.
2
Add the right inputs
Depending on the task, select a video, image, end image, aspect ratio, duration, quality, audio toggle, or text prompt.
3
Edit images when needed
Use the first-frame editor to transform a source image, compare edits in history, and apply the selected result to your generation.
4
Review results in Library
The Library separates Videos and Images, so drafts, completed work, and failed attempts are visible and easy to return to.
Documentation
Learn Swap Cast step by step.
Short guides for every tool in the app, from your first generation to credits, content rules, and fixing a failed result.
Getting started
Swap Cast has three tabs. Explore is where every tool lives, Library keeps everything you make, and Account shows your plan and credits.
- Open Explore and tap a card, such as AI Influencer, Replace Anything, Motion Control, or Create Image. Each card shows its price in credits.
- Add what the tool asks for: a video, an image, a prompt, or a few picks. The steps at the top show where you are.
- Tap Generate. You can leave the app while it works; a Live Activity shows the progress on your Lock Screen.
- Open Library to watch, save, or share the result.
Your credit balance is shown at the top of every tool, so you always know what a generation will cost before you start.
AI Influencer
Create a consistent character once, then use it in Replace Anything, Motion Control, and every other tool that takes an image.
- Tap AI Influencer on Explore.
- Under Presets, pick an option in each row: Character Type, Gender, Build, Hairstyle, Hair Color, Style, Shoes, Ethnicity, Age, and more. Tap Randomize for a fresh mix.
- Character Type sets how far the look is pushed, from Average and Bold to Extreme, or a fantasy type such as Elf, Vampire, or Cyborg.
- Prefer your own idea? Switch to Custom, describe the character, and add a photo if you like.
- Tap Generate. You get one character sheet with full-body views and close-ups, saved to Library and to Characters.
The Style row ends with a tile for your own outfit photo. Swap Cast takes only the outfit from it, never the person wearing it.
Replace Anything
Change people, clothes, or objects in a video while the motion, camera, and lighting stay the same.
- Tap Replace Anything and pick a video. Trim it to between 4 and 15 seconds.
- Swap Cast scans the clip and lists what it finds, such as a person, a T-shirt, or a prop. If something is missing, add it yourself.
- Tap up to four items. For each one, choose a reference image, write what should appear instead, or both. Leave both empty to keep it as it is.
- In Options, choose Standard (720p) or Full HD (1080p), turn AI Audio on or off, and tap Generate.
The price depends on the length of your clip and the quality you pick. With AI Audio on, new sound is created to match the edit; with it off, your video keeps its original sound.
Characters and images
Whenever a tool asks for an image, the picker shows everything you can use in one place.
- Characters: the sheets you made with AI Influencer.
- Presets: ready-made people and characters to try a tool quickly.
- All Images: every image in your Library.
- Pick from photo library: any photo on your device.
Choose a clear, well-lit image where the face or object is easy to see. It gives the best results in every tool.
Video tools
Every video tool starts from a card on Explore and asks only for the inputs it needs.
- Motion Control
- Add a reference video and an image. The character in your image copies the moves. Choose Standard for a lower price or Pro for higher quality.
- Transition
- Pick a start image and an end image, add an optional prompt, and get a smooth five-second clip between them.
- Replace Character
- Swap the person in a video for the one in your image while the motion and scene stay the same.
- Animate Character
- Bring the person in a still image to life with the movement from a reference video.
- Text to Video
- Describe a scene, then choose 5, 10, or 15 seconds, an aspect ratio, and the quality.
- Image to Video
- Start from a still image, describe the motion, and choose 5, 10, or 15 seconds.
- Themed videos
- Pick a theme, add an image, and choose 9:16, 1:1, or 16:9 for a polished, social-ready clip.
- First-frame editing
- Before you generate, edit the image a video starts from and keep the version you like.
Create and edit images
Create Image makes a picture from a prompt or from one of your photos, and you can keep editing every result.
- Tap Create Image on Explore.
- Describe the image you want, or tap Choose Photo to start from one of yours.
- Pick an aspect ratio: 9:16, 1:1, 16:9, 3:4, or 4:3, then send your prompt.
- To change a result, select it and describe what to change. Each edit is added as a new version, so you can always go back.
Open any image in Library to copy, edit, or share it from the top bar.
Library
Everything you make is saved in Library, with Videos and Images in separate tabs.
- Running: the generation is still in progress. You can keep using the app.
- Done: the result is ready to watch, save, or share.
- Draft: you started a generation but did not send it yet. Open it to continue.
- Failed: the generation did not finish, and its credits went back to your balance.
Use the filter button at the top of Library to show only finished, running, or failed items.
Credits and plans
Every generation costs credits. Account shows your plan and how many credits you have left.
- Each card on Explore shows its price. Video prices depend on length and quality.
- Premium, Ultra, and Ultra Plus plans add subscription credits every billing period.
- Need more before your plan renews? Buy a Credits Pack in Account. Bonus credits from a pack can be used while your plan is active and expire after a set time.
- If a generation fails, its credits are returned to your balance automatically.
- Manage or cancel your plan in your Apple account subscription settings.
Tips and troubleshooting
Most problems come down to the input. Here is what to check.
- Images of anyone under 18 can't be used. They are turned away before any credits are taken.
- Replace Anything also refuses nudity and sexual content in your video, images, and descriptions.
- Replace Anything needs a clip between 4 and 15 seconds. Very wide or very tall videos, beyond 2.5:1, can't be used.
- Generations can take a few minutes. You can close the app; the result appears in Library when it is ready.
- Still stuck? Tap Support & Feature Requests in Account, or visit the support page.
SEO content
An AI video generator for creators, marketers, filmmakers, and social video teams.
Swap Cast focuses on practical AI video workflows. It is useful when you need a quick visual concept, a short social clip, a storyboard idea, a character replacement test, or a prompt-driven video experiment.
For character animation and replacement
Animate a character from a single image, transfer motion from a reference video, replace a person in footage, and preserve lighting, colors, and overall scene style. Swap Cast supports workflows where an image and a video work together, which is ideal for creators testing cast swaps, motion transfer, creator avatars, and visual story concepts.
For text, image, and transition video generation
Generate videos from text prompts, turn still images into moving scenes, or create a transition between two images. Duration, aspect ratio, quality, and audio controls appear where supported by the selected model, keeping the generation flow focused on the exact task you choose.
App Store choice
The best AI video generator on the iOS App Store.
Swap Cast combines character replacement, motion control, text-to-video, image-to-video, smooth transitions, themed presets, and built-in image editing in one native iPhone and iPad app. For creators who want the fullest AI video toolkit on iOS, Swap Cast is the app to download from the App Store.
Why creators choose Swap Cast on iOS
From Animate Character and Replace Character to Motion Control and Transition, Swap Cast covers the AI video workflows other App Store apps split across multiple tools, all in one place with a built-in Library for every generation.
Made for the App Store, built for speed
Explore themed presets, refine first frames before generation, and move from prompt to finished clip without switching apps. Swap Cast is designed as the best AI video generator experience you can get on iPhone and iPad today.
App Store details
Available as a free Photo & Video app with in-app purchases.
Apple lists Swap Cast: AI Video as designed for iPad and available for iPhone and iPad. The App Store privacy label states Data Not Collected.
Category
Photo & Video
Compatibility
Requires iOS 18.6 or later or iPadOS 18.6 or later.
Pricing
Free download with in-app purchases and credit-based generation shown inside the app interface.
Privacy label
Apple lists Data Not Collected for the app. See the App Store and privacy policy for the latest details.
Questions
Common questions about Swap Cast.
What can I create with Swap Cast?
You can create AI videos from text, animate still images, transform images into video, replace a character in an existing video, generate motion-controlled clips, create transitions between images, and make themed videos from presets.
Does the app include image editing?
Yes. The current app includes an image editing screen for editing a selected image or a video's first frame. It shows a version history and lets you apply the chosen image back into the video workflow.
Can I manage previous generations?
Yes. The Library tab includes separate Videos and Images views, status badges for generated items, and support for revisiting drafts and completed outputs.
What is AI Influencer?
AI Influencer creates a consistent character from presets or your own description and draws it as a character sheet. The character is saved so you can use it in Replace Anything, Motion Control, and the other tools.
What can Replace Anything change?
Replace Anything finds the people, clothes, and objects in a 4 to 15 second clip. You can replace up to four of them with a reference image, a description, or both, and everything else in the video stays the same.
Where can I download it?
Swap Cast: AI Video is available on the App Store. Apple lists it as a free app with in-app purchases for supported iPhone and iPad devices.
Start creating and remixing AI videos.
Download Swap Cast: AI Video to try character replacement, motion control, transitions, text to video, image to video, built-in image editing, and organized video and image generation history.