Retention Radar watches your whole clip — not just the first 3 seconds. See the pacing, catch the dead spots where viewers bounce, and tighten it before you post.
NEW — Retention Radar: a whole-clip pacing timeline that finds the boring middle. Motion-energy curve, scene-cut count, and located dead spots with timestamps, all measured on device.
PostProof is a final-pass video checker for creators who want to catch publishing problems before export.
Import a short-form video, pick a generic layout, and PostProof shows pixel-accurate safe zones, stylized feed controls, caption risk with coverage percentages, face risk, cover options, trim controls, export settings, and a publish-readiness plan in one focused workflow.
What you can do with PostProof:
- preview a clip inside a generic short-form video overlay
- run FrameCheck to see whether text, faces, or details may be covered
- compare coverage results across the bundled layouts
- get a ranked Publish Readiness Plan with the highest-priority fixes first
- review safe-zone, audio, readable-text, frame-fill, cover, and Stop Score checks together
- get a Stop Score, muted-readability score, loop score, and tap-to-open score breakdowns
- place a short caption that snaps inside the center-safe area
- browse an offline specs cheat sheet for aspect, duration, resolution, bitrate, and frame rate
- use bundled caption prompts and tags for drafting posting copy
- choose a cover frame scored on exposure, sharpness, contrast, and subject presence
- trim the start and end before export
- export a 720p or 1080p posting copy
- save each run to a local Proofs history
- see a Stop Score trend chart across saved proofs
- compare two saved proofs side by side
- open a full detail sheet with score breakdowns and caption copy
Layouts use generic, layout-descriptive names such as Tall-Caption Vertical, Right-Rail Vertical, Title-Bar Vertical, and Square Timeline. PostProof uses no social-platform brand names.
PostProof is not a social network and does not post for you. It is the quick check before you upload: make sure the caption is readable, the face stays clear, the cover is strong, and the clip is ready to share.
Privacy is simple:
- no account required
- no developer cloud
- no analytics SDK
- no advertising SDK
- no tracking
- video analysis runs on device
PostProof is not affiliated with, endorsed by, or sponsored by any social media platform.
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New — Retention Radar. PostProof now watches your WHOLE clip, not just the hook. A motion-energy timeline across the entire video shows where viewers are most likely to bounce, flags the dead spots (still, near-silent stretches) with exact timestamps, counts your cuts and average shot length, and hands a slow open or flat ending straight into Trim & Ship. It's the pacing read no other pre-publish tool gives you — and like everything in PostProof, it runs entirely on device. No account, no upload.
Version 2.2
The developer, Robert Corbin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Provider
Robert Corbin
Size
2.1 MB
Category
Photo & Video
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.