Time Warp Scan - Face Scanner

Review by eFreeware

The blue-line effect that swept through social feeds a few years ago is easy to admire and surprisingly awkward to reproduce. You need a scanning bar that crosses the frame at a steady pace, a frozen moment at exactly the right instant, and a way to save the result in a shape you can post. Doing that by hand in a general video editor means fiddling with masks and keyframes, which is a lot of work for something that is supposed to be a five-second joke.

Time Warp Scan - Face Scanner, from developer Braly JSC, exists to remove that fiddling. It is a free Android app in the Photography category that reproduces the time warp scan filter and the related slit-scan look, then lets you save the finished photo or clip. The app has been available since March 4, 2022 and has passed 10 million installs, with a 4.1 average from 38,404 ratings. It is rated for Everyone and the developer's most recent update, version 3.7.10, landed on October 1, 2026.

What appeals to me here is the narrowing of scope. Rather than being a general-purpose editor with a warp option buried in a menu, this is built around one visual trick and the handful of decisions that trick requires: which way the bar travels, how fast it moves and how bright the result should look. If you have watched that effect scroll past on your feed and wondered how people make it, this is a direct route to finding out.

The blue-line freeze, and who ends up using it

The core mechanic is simple to describe. A blue line passes over the scene, and the image freezes at the moment it crosses. Move while the bar is traveling and the parts of you it has already passed stay put while the rest keeps changing, which is why the results look stretched, duplicated or slightly wrong in an amusing way. The app handles that timing for you, so the effort goes into the performance rather than the editing.

That makes it a natural fit for people who post short, funny clips and stills: friend groups who want a group photo where everyone looks progressively more distorted, someone who wants a profile picture that stands out, or anyone who enjoys the challenge format this filter belongs to. It also suits people who like the idea of the effect but have no interest in learning a timeline-based editor.

The other group I would expect to get value from it is the casually curious. The app is free to install and the effect is immediate, so trying it once costs nothing but a few minutes. Because it is rated for Everyone, it is the sort of thing that can be passed around a household without much concern about the content itself.

Where it is less useful is as a general editing tool. If your editing needs run to color grading, multi-clip timelines or text overlays, this is not the app those tasks point to.

Scan direction, speed and the controls that shape a shot

Two settings do most of the creative work. You choose the direction the scanner travels, either side to side or top to bottom, and you set how fast the blue line moves. Direction changes the character of the result: a horizontal pass tends to stretch a face or a row of people sideways, while a vertical pass pulls the distortion down the frame. Speed decides how much of that distortion you get, since a slow bar leaves more time for movement between the frozen sections.

The developer also includes brightness adjustment, which matters more than it sounds. The effect depends on being able to see the seam between frozen and live parts of the image, and a brighter or darker result changes how obvious that seam is. Having the control in the same place as the scan settings keeps the workflow short.

Beyond the basic pass, the app offers slit-scan effects and a set of shape changes. The developer describes these as ways to alter a body or an object, lengthen fingers, change the shape of a head or make hair look shorter. Those are the tools for anyone who wants to push past a single funny frame into something more deliberate and odd.

One detail worth flagging for anyone who has tried similar filters elsewhere: the developer states that output carries no watermark. For people who post their results, that removes the usual step of cropping a logo out of the corner, which is a small thing that adds up if you make these often.

Photos, video and getting the result off your phone

The app covers both stills and moving images, with a photo filter and a video filter built on the same scanning effect. That matters because the two formats ask different things of you. A still rewards a single well-timed pose, while a video lets the movement itself carry the joke, and the frozen sections accumulate as the bar travels. Having both in one place means you can try an idea in whichever format suits it.

Saving is handled in the obvious way: finished pictures and clips go to your gallery. From there the developer lists sharing to TikTok, Snapchat, Facebook, Facebook Messenger, WhatsApp, Instagram and Likee, among others. That range covers the places this kind of content usually ends up, so the path from finished clip to posted clip is short.

The workflow has three steps. You pick the scan direction, you move while the slider is running to create the pose or motion you want, and when the scan finishes you save the result and send it on. There is not much to learn, and the app's appeal rests on that brevity rather than on depth.

There is nothing in them that changes how the app works, so anyone returning after a break should find the same tool they left.

What it costs, and what arrives with it

The app is free to download. It does carry advertising, and it offers in-app purchases. The filter can be used without limits and at no cost.

I would treat the two together as the practical picture: you can install it, make the effect and see whether it fits how you post, without paying anything to find out. The presence of purchases means there is more available inside if you want it, and the core effect is framed as free.

Because the app is ad-supported, it is worth deciding early whether this is a tool you will reach for often or a one-off experiment. Either answer is fine, but the calculation is different for someone who plans to make these clips weekly than for someone who wants a single funny photo of a group of friends.

The content rating is Everyone. For a filter that produces distorted photos and clips, that keeps the barrier to trying it low.

How it sits against the alternatives

The obvious comparison is a full video editor. Those give you masks, keyframes, layers and export controls, and they can reproduce a scanning-bar effect if you are willing to build it. What they do not give you is the effect as a ready-made button with a direction toggle and a speed slider. The trade is clear: more control and more work, or less of both.

A second alternative is the built-in filter set on a social platform. Those are convenient because the result is already where you want to post it, but they tend to be fixed presets with little room to adjust how the scan behaves. This app's direction, speed and brightness controls are the difference between a preset and something you can tune.

A third option is a dedicated face-warp or distortion app. Those often lean toward exaggerated transformations of features rather than the scanning effect itself, so the results look different even when the goal is similar.

None of these is strictly better. A general editor rewards patience, a platform filter rewards speed, and this app rewards wanting one particular trick with a few knobs to turn. That is a narrow brief, and the app is built to fit it rather than to compete across the board.

Is the blue-line filter worth a spot on your phone

Time Warp Scan - Face Scanner does one thing and does it with enough control to be interesting rather than a novelty you try once. The direction toggle, the speed setting, brightness adjustment and the slit-scan options give you room to experiment, and the results are ready to post as they come out.

It is free to install, supported by ads, and offers in-app purchases, so there is no cost to finding out whether the effect suits you.

I would point it at anyone who posts short, playful photo and video content and wants the scanning effect without building it themselves, and at anyone curious about how the trick is made. If your editing needs are broader than a single effect, a general-purpose editor remains the better home for that work.

What's new in version 3.7.10

- Version 3.7.10 - 17/09/2026 - Improve performance - Update version