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App Store Apps > Utilities > Prime Speed Controller
Prime Speed Controller icon

Prime Speed Controller

by Kohei Ishikawa · Utilities · Free
On the App Store since September 2026 · Data updated 2026-10-31

Prime Speed Controller is made and published by Kohei Ishikawa. AppBrain is an independent app data site and isn't affiliated with Kohei Ishikawa. The app name, icon, screenshots and description belong to Kohei Ishikawa and are shown as published on the App Store.

AppBrain's verdict

Last updated
September 21, 2026
Size
776.0 KB
Official page on the App Store

User feedback

Ratings and reviews on the App Store

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Store listing

By Kohei Ishikawa, from the App Store
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Screenshots by Kohei Ishikawa, from the the App Store listing
Description by Kohei Ishikawa Written by the developer, not by AppBrain. Click to read.
Prime Speed Controller is a Safari extension that adds A-B loop repeat, playback speed control, seek, and time-saved tracking exclusively to Prime Video on iPhone and iPad. Perfect for language learners and anyone who wants to get more out of Prime Video.

■ A-B Loop Repeat
Tap A to mark a start point, tap B to mark an end point — the video loops that segment continuously. Replay any dialogue, scene, or lecture as many times as you need.

■ Playback Speed
15 presets from 0.5x to 5x, with 0.05x fine-tuning. Subtle steps like 1.1x and 1.2x let you boost speed while keeping audio clear.

■ Forward & Rewind
Choose 5, 10, 15, or 30-second intervals. Jump back instantly to catch missed dialogue.

■ Time-Saved Tracker
The panel shows how much real time you have saved by watching above 1.0x speed, accumulated across sessions.

Key Features

• A-B Loop: mark any segment for continuous repeat
• 15 playback speed presets from 0.5x to 5x
• Fine-tune in 0.05x steps
• Forward and rewind at 5, 10, 15, or 30 seconds
• Time-saved tracker displayed in the panel
• Settings saved automatically across sessions
• Works on iPhone and iPad
• Activates only on Prime Video — no other sites
• No data sent to external servers

How to Use

1. Follow the in-app guide to enable the extension in Safari Settings.
2. Open Prime Video in Safari and start a video.
3. Use the floating panel to set speed, seek interval, or A-B loop points.

Playback speed or seeking may be restricted by Prime Video for certain titles. This app does not detect or skip advertisements.

This is an independent, unofficial Safari extension. It is not provided, endorsed, or approved by Amazon, Prime Video, or their affiliates. Amazon and Prime Video are trademarks or registered trademarks of their respective owners.
Official page on the App Store

Safety and technology

Found in the app by AppBrain
Price
Free
App size
776.0 KB
Content rating
Everyone

Technologies used by Prime Speed Controller

Releases

Updates seen on the App Store
Version
1.0
Launched
September 2026

No changelog data

Alternatives

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Rankings

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About the app and developer

About Prime Speed Controller

Prime Speed Controller is an utilities app developed by Kohei Ishikawa.

What is the rating of Prime Speed Controller?

Prime Speed Controller has no ratings yet.

Is Prime Speed Controller free?

Prime Speed Controller is free. The app size is 776.00 kB. The latest version available is 1.0. The last update was on September 21, 2026.

What are the requirements for Prime Speed Controller?

The app has a content rating of Everyone. The app has been available on the App Store since September 2026.

Developer information for Kohei Ishikawa

Kohei Ishikawa

Address:

Frequently asked questions about Prime Speed Controller

Is Prime Speed Controller free?

Yes. Prime Speed Controller is free on the App Store.

Is Prime Speed Controller still available?

Yes. Prime Speed Controller is on the App Store, and the last update we saw was on September 21, 2026.

How large is Prime Speed Controller?

Prime Speed Controller is 776.00 kB.

Is Prime Speed Controller suitable for children?

App Store rates the content of Prime Speed Controller as suitable for everyone.

Who made Prime Speed Controller?

Prime Speed Controller was developed by Kohei Ishikawa. It is listed in the utilities category on the App Store.

What are the best alternatives to Prime Speed Controller?

People looking at Prime Speed Controller also look at these utilities apps: Simple Video Speed Controller, Video Editor – Reverse, Speed, Video Editor - FFmpeg Pro, Video Speed for Safari, Video Compressor - Shrinker.

Share Prime Speed Controller

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Overview Alternatives Reviews Rankings Technology
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