Free Video Speed Changer Apps: How to Speed Up & Slow Down Videos

Ever wondered how to get those cool fast-motion or super slow-mo effects in your videos?

If you're searching for a great free video speed editor to easily speed up or slow down your video, you're in the right place!

Whether you want to create a dramatic slow-motion highlight, a speedy time-lapse, or just adjust video speed for better storytelling, the right video speed changer app can make all the difference.

This guide dives into the top 12 apps for iPhone and Android in 2025, designed to help you master video speed control without a headache.

Let's find the perfect one for you!

Quick Look: Top 3 Video Speed Editor Apps

YouCam Video: Best Overall App to Change Video Speed

Our top recommendation, YouCam Video, stands out as the best overall app to change video speed.

It's a comprehensive video speed editor that not only lets you effortlessly adjust video speed but also offers a rich suite of tools like filters and effects.

Whether you're new to video editing or a seasoned pro, YouCam Video provides an intuitive way to elevate your creations.

Download YouCam Video Free

iMovie: Best for Video Speed Editing on iOS

A staple for iPhone enthusiasts, iMovie comes pre-installed and offers a user-friendly way to change video speed on iOS.

Its intuitive interface allows for quick clip splitting, speed adjustments, and real-time previews.

Seamless integration with the Apple ecosystem makes it a solid choice for iOS users looking for a reliable video speed editor.

FilmoraGo: Best Video Speed Changer for Beginners

FilmoraGo is a hit among social media creators, providing an easy-to-use platform to adjust video speed and layer on creative effects.

This video speed changer is excellent for beginners, offering simple controls to achieve cinematic slow-motion or energetic fast-forward effects, making it a great app to speed up videos free (with options for paid features).

12 Best Apps to Change Video Speed on iPhone & Android in 2025

#1 YouCam Video

• OS: iPhone / Android
• Rating: 4.8 / 4.3

YouCam Video is a top-tier free video editing app packed with AI-powered tools, including dynamic filters, stunning effects, and a precise video speed changer. Its intuitive slider lets you effortlessly speed up video content up to 5.0x or create smooth slow-motion, adding a professional and exciting dynamic to your projects. It's an ideal app to speed up videos free for both Android and iPhone users.

Adjust Video Speed with YouCam Video

#2 Video Speed Changer

• OS: iPhone / Android
• Rating: 4.6 / 4.5

True to its name, Video Speed Changer focuses on letting you speed up or slow down your videos. While it's straightforward for basic speed adjustments, it's light on other editing features. If you're looking for a dedicated video speed controller without extra frills, this could be it. However, for more comprehensive editing, you might want to explore other options.

#3 Video Speed Fast & Slow Motion

• OS: Android
• Rating: 4.4

This Android-specific app to speed up videos, Video Speed Fast & Slow Motion, allows you to create engaging clips with both fast motion and slow-motion effects. You can record directly or import existing videos, adjusting speed up to 4x or slowing down to 1/4x. Similar to the previous app, its primary function is speed control, with limited additional editing tools.

#4 Slow Fast Slow - Control the Speed of Your Videos

• OS: iPhone / Android
• Rating: 4.4 / 4.5

Slow Fast Slow is a quality video speed changer app for both iPhone and Android. Its standout feature is the ability to maintain correct audio pitch when you speed up video or slow it down, which is crucial for professional-sounding results when you change video speed.

#5 iMovie

• OS: iPhone
• Rating: 4.1

As mentioned earlier, iMovie is Apple's native video editing app for iPhone. It provides essential tools like transitions, filters, text overlays, and, importantly, video speed adjustment. While reliable, its speed modification is limited to 2x for speeding up and 1/8x for slow motion.

#6 VivaVideo - Video Editor&Maker

• OS: iPhone / Android
• Rating: 4.8 / 4.4

VivaVideo is a user-friendly video editor and maker offering a range of features, including AI effects, keyframe editing, and sophisticated curved speed adjustments. Beyond simple speed changes, it provides preset speed effects like Montage and Bullet to easily add dramatic flair to your videos.

#7 FilmoraGo

• OS: iPhone / Android
• Rating: 4.7 / 4.6

Filmora (formerly FilmoraGo) provides a comprehensive suite of video editing tools, from filters and text to transitions, smooth slow motion, and intuitive speed curves. This makes it easy to adjust the speed for fast or slow motion or use preset curves for themed effects. A great app to speed up a video with creative control.

#8 KineMaster

• OS: iPhone / Android
• Rating: 4.7 / 4.2

KineMaster delivers a top-tier mobile video editing experience. It boasts advanced tools such as keyframe animation, chroma key, and robust speed control (including slow motion). You can speed up video footage up to 8x or slow it down to 1/8x, offering significant flexibility.

#9 InShot

• OS: iPhone / Android
• Rating: 4.9 / 4.8

InShot is a powerful video editor app featuring tools for clip trimming/merging, video reversing, AI effects, and precise speed adjustment. Its Speed Curve feature is particularly useful for creating smooth speed transitions when you speed up or slow down videos, ensuring a polished final product.

#10 CapCut

• OS: iPhone / Android
• Rating: 4.8 / 4.4

CapCut is a popular choice for its user-friendly interface and rich features, including free fonts, effects, keyframe animation, smooth slow-motion, chroma key, and stabilization. As a video speed controller, it's exceptionally versatile, allowing adjustments from 0.1x up to an impressive 100x, along with speed curve application.

#11 Videoleap

• OS: iPhone / Android
• Rating: 4.6 / 4.4

Videoleap offers a broad spectrum of video editing features, complemented by a video speed adjuster with 14 distinct options. This allows for creative effects, whether you're slowing down footage to 0.12x or using it as an app to speed up video clips to 5x.

#12 Videoshop

• OS: iPhone / Android
• Rating: 4.9 / 4.6

Videoshop is a free video editor designed for quick edits, offering filters and various effects for personalization. It includes robust options for both slow motion and fast motion, allowing you to precisely adjust the speed of your video or audio tracks.

Feature Comparison: Top Apps to Speed Up and Slow Down Videos

Pro Tips for Perfect Video Speed Adjustments

• Consistency is Key: Ensure that the speed changes are smooth and consistent throughout the video to avoid jarring transitions. Use gradual speed ramps if your app supports them (like speed curves).
• Enhance with Music & Sound: Pair your sped-up or slowed-down video with appropriate music or sound effects to amplify the mood. Remember to check how speed changes affect existing audio – some apps help maintain pitch!
• Use Sparingly & Purposefully: While changing video speed can add a unique touch, overusing it can distract from your main content. Use these effects to highlight key moments, create a specific mood (e.g., urgency with fast motion, drama with slow motion), or for comedic timing.
• Consider Video Quality: Extreme slow motion can sometimes reveal choppiness if the original footage wasn't shot at a high frame rate (e.g., 60fps or higher is better for slow-mo). Preview your changes to ensure the quality remains acceptable.
• Tell a Story: Think about why you're changing the speed. Does it enhance the narrative? Does it make a tutorial easier to follow by speeding up mundane parts? Purposeful speed changes are always more effective.

Download YouCam Video: Free App to Change Video Speed

Video Speed Changer App FAQ: Your Questions Answered

Is there an app that can speed up videos?

Absolutely! Many excellent apps can speed up videos. These are often called video speed changers or are features within comprehensive video editing apps.

Some popular apps that excel as a video speed editor include:

• YouCam Video (Great all-around choice with intuitive speed controls)
• Video Speed Changer (Dedicated to speed adjustments)
• Video Speed Fast & Slow Motion (Good for Android users)
• Slow Fast Slow - Control the Speed of Your Videos (Excellent for maintaining audio pitch)
• Videoshop
• InShot
• Videoleap
• CapCut (Offers very high speed multipliers)

These apps provide features to adjust your video's playback speed, making them faster or slower, along with other editing capabilities to enhance your content.

How can I speed up an existing video?

Speeding up an existing video is easy with the right video editing app. Most apps, like YouCam Video, follow a simple process:

• Import your video into the speed up video app.
• Look for the 'Speed', 'Velocity', or 'Time' adjustment tool.
• Increase the speed (e.g., 2x, 4x, or use a slider/curve).
• Preview your fast-motion video.
• Check the audio – some apps can maintain pitch, or you might need to adjust it separately.
• Save or export your newly sped-up video!

How can I make my video 10x faster?

Making a video 10x faster requires a video editing tool with significant speed adjustment capabilities. While many mobile apps cap out below this (CapCut being an exception noted for up to 100x, though practical use might vary), some desktop software might offer this. If your chosen app to speed up video supports it:

• Open your video in the editor.
• Find the speed control and set it to 10x or input '1000%'.
• Apply and preview. Be mindful that extreme speed-ups can significantly shorten video and impact clarity.
• Export your super-fast video.

For most practical purposes on mobile, achieving very high speeds like 10x might involve multiple passes if your app has a lower single-pass limit, or using an app like CapCut that advertises high multipliers.

How do you make a 2x speed video?

Making a 2x speed video is a common task and very straightforward. Using YouCam Video as an example:

• Download and open YouCam Video.
• Upload the video you want to make faster.
• Tap on your video clip, then select the 'Speed' option.
• Adjust the slider to '2.0x' to double the video speed.
• Preview the result. Check that the audio sounds good and the video flows well.
• Happy with it? Tap the checkmark to save your 2x speed video!

How can I speed up a video without affecting audio pitch?

That 'chipmunk voice' effect when you speed up video can be annoying! To avoid this, look for a video speed editor that offers 'pitch correction' or 'maintain audio pitch' when adjusting speed. Apps like Slow Fast Slow (mentioned in our list) specialize in this. YouCam Video also aims to provide smooth audio. Alternatively, some advanced editors let you detach audio, speed up the video, and then separately adjust the audio length (time-stretching) to fit without altering pitch, though this is more common in desktop software. For mobile, choosing an app with built-in pitch protection is easiest.

How to slow mo a video on iPhone?

Creating a cool slow-motion video on your iPhone is simple with an app like YouCam Video. Here’s how:

1. First, download YouCam Video from the App Store.
2. Open the app and import the video clip you want to turn into slow motion.
3. Tap on the 'Speed' tool. Use the slider to decrease the video speed (e.g., 0.5x for half speed, 0.25x for quarter speed). Any value below 1.0x will create a slow mo effect.
4. Preview your slow-motion masterpiece. Once you're happy, tap the checkmark to save it!

This is a great way to add dramatic emphasis or highlight details in your iPhone videos.

What's the best free app to change video speed?

While 'best' can be subjective and depends on your specific needs, YouCam Video is a fantastic free app to change video speed. It offers intuitive controls for both speeding up and slowing down videos, alongside a host of other useful editing features, all without an initial cost. Other great free options with speed adjustment include CapCut and InShot, though some of their more advanced features might be behind a paywall. We recommend trying a few to see which interface you prefer for your video speed editing tasks!

How can I change video speed on Android for free?

Android users have many excellent free apps to change video speed. YouCam Video is available for Android and provides robust speed controls for free, making it a top choice to speed up video Android free. Other popular choices include 'Video Speed Fast & Slow Motion' (a dedicated speed app) or versatile editors like CapCut and InShot, which offer free tiers for their speed adjustment tools. Simply download your chosen speed up video app from the Google Play Store and start editing your clips!