Comparison

Video Delay Instant Replay vs PERFBOOK

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Video Delay Instant Replay

This app transforms your device into a sports analysis tool, providing instant video feedback for coaching and self-improvement. Analyze technique in real-time or slow-motion, with support for external cameras and privacy-focused operation.

Highlights
  • Instant video feedback
  • Slow-motion replay
  • Frame-by-frame analysis
  • External camera support
  • Split screen / Versus mode
  • On-screen drawing tools
  • Remote control functionality
Features
Read full description

Hands-free video feedback for coaching & self-analysis. Sports Training Made Simple! #1 Sports App on iPad * Pro-grade features - Trusted by major league teams * Instant feedback - No stopping to review videos * All sports - Baseball, volleyball, gymnastics, golf, swimming * External camera support (GoPro Hero 10+ / UVC USB-C / IP / RTSP / NDI) * Privacy first - No login required * Try free - No account, no card required JASON KANZLER, Farm Director with the Chicago Cubs: "Video Delay Instant Replay has been one of the most consistently valuable tools we’ve used. I first introduced it in Houston, where it was quickly embraced across hitting, defense, baserunning, catching, and other training domains. Since joining the Cubs, we've brought it into our work again, and it continues to be a simple and effective way to deliver immediate visual feedback—a cornerstone of quality skill development. I'm grateful for tools like this that make coaching better and athletes more empowered. I fully recommend it to anyone looking to enhance learning in a training environment." Transform any iPhone or iPad into a sports analysis tool. Get instant video feedback without stopping your training - see your technique seconds after you perform it. Ideal For: * YOUTH SPORTS COACHING / PLAYER DEVELOPMENT: Great for coaches who work with athletes needing visual feedback to understand proper form. * PHYSICAL EDUCATION CLASSES: Excellent for students to conduct self-assessments. * INDIVIDUAL SKILL DEVELOPMENT: Perfect for athletes training alone who want to analyze their technique and make faster progress. * SPORTS REHABILITATION: Useful for physical therapists and trainers assisting athletes recovering from injuries and working on rebuilding proper movement patterns. * PERFORMERS: Refine acting, dancing, or presentation skills. How it works - 5 Simple Steps - Set 5 seconds delay time (for video buffering) - Perform your action (swing, throw, kick, etc.) - 5 seconds later watch your performance played back on the screen - Immediately adjust your form based on what you saw - Repeat the cycle for continuous improvement Replay in slow-motion for frame-by-frame analysis * DELAY MODE Continuous delayed video stream Up to 20 minutes buffer at 60fps 2K video quality Split Screen / Versus Mode Recording Quick Save Dynamic Buffer Replay View \\ Perfect for practice drills, plays analysis, or broadcasting. * SLOW-MO MODE Automatic slow-motion replay Visual countdown timer \\ Perfect for in-depth technique analysis * REPLAY VIEW Frame-by-frame analysis Slow-motion playback Analysis tools Annotations & Sharing Trim & Export * REMOTE CONTROL Stream between Apple devices - use one as a camera and the other as a remote controller Connect external cameras: - UVC-compliant USB-C camera with iPad - IP / RTSP / NDI - GoPro AirPlay to the TV screen * ANALYSIS TOOLS On-screen drawing Angle measurement Stopwatch Motion detection grid Horizontal flip for mirror view Rotation Frame-by-frame analysis Compare Technical Specs: Resolutions: 480p, 720p, 1080p, plus custom options Compatibility: iPhone, iPad, GoPro Hero 10+, DJI Action 3 and newer Storage: RAM-only Buffer: Up to 20 minutes @ 60fps *Buffer depends on device memory and video quality.  Disable audio capture to keep music or podcasts playing. Privacy & Security: No registration required No cloud uploads - videos stay on your device Auto-clear buffer when app closes GDPR compliant Support: videodelay.app Manual: videodelay.app/user-guide Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ *GoPro® compatibility requires Hero 10 or higher with the latest firmware. Disclaimer: This product is not affiliated with, endorsed by, or in any way associated with GoPro Inc. or its products and services. GoPro, HERO, and their respective logos are trademarks or registered trademarks of GoPro, Inc.

About

PERFBOOK

Features
Read full description

PERFBOOK is your data centralization tool. Organize, track and optimize your teams' performance. PERFBOOK is the cornerstone of communication between the members of your team, bringing together all the tools you need to analyze and manage the performance of your pro and amateur athletes. Focus on the action, we'll simplify the rest!

Screenshots

Video Delay Instant Replay4 screens
PERFBOOK4 screens

Verdict

The call

The clearest difference is in-app purchases: PERFBOOK at none against Video Delay Instant Replay's 7. Video Delay Instant Replay's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Video Delay Instant Replay sells 7 in-app purchases, starting at $5.99 per 7 days. PERFBOOK asks for nothing beyond the download.

UpkeepUpdate frequency

Video Delay Instant Replay ships an update every 2 weeks, PERFBOOK every 3 months. Both last shipped on November 6, 2026.

Scorecard2 real differences · 8 level
Video Delay Instant Replay versus PERFBOOK: the parameters behind the verdict, then further details
ParameterVideo Delay Instant ReplayPERFBOOK
PriceFreeFree
Rating4.5 (537 ratings) — better—
Positive reviews50.9% of reviews—
Number of ratings537 — better—
Update frequencyEvery 2 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size54 MB0 MB
Age rating4+12+
Developermichal bojanowiczMarc ESCURIEUX

Bugs and requests

Video Delay Instant Replay

Reported bugs

13 issues
  • App crashes consistently with specific settings
  • Delay-video not starting without premium
  • Cannot log in to use paid pro features on a new device
  • Playback not working for videos
  • Ads popping up that won't go away, requiring app restart
Show 8 more
  • Screen randomly switches orientation
  • Full-page ads prevent initial use of video delay
  • Delay needs to be reset every minute in free version
  • Lagging on newer devices after updates
  • Maximum delay not exceeding 30 seconds
  • App is not functional without subscription
  • No real-time screen alongside image
  • Free version is useless due to ads

Requested features

9 requests
  • Ability to tag and clip video by athletes for easy review
  • VR mode for delayed viewing
  • Ability to draw on the screen and have the drawing remain in place
  • Option to set 'action time'
  • Improvement for iPhone X aspect ratio
Show 4 more
  • Option for one-time payment instead of subscription
  • Better implementation of free usage through ads, especially for offline use
  • Ability to record video
  • Clarification on how video storage impacts memory and options for automatic deletion

PERFBOOK

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Video Delay Instant Replay

Subscriptions7
  • Weekly (7 Days Free)7 Days trial$5.997 Days
  • Weekly$5.997 Days
  • Monthly (1 Week Free)7 Days trial$12.991 Month
Show 4 more
  • Monthly$12.991 Month
  • Yearly$49.991 Year
  • Yearly (1 Week Free)7 Days trial$99.991 Year
  • Yearly$99.991 Year
None

PERFBOOK

No in-app purchases

Questions

Is Video Delay Instant Replay free?
Video Delay Instant Replay is free to download, with in-app purchases available.
Is PERFBOOK free?
PERFBOOK is free to download, with no in-app purchases.
Do Video Delay Instant Replay or PERFBOOK have ads?
Neither Video Delay Instant Replay nor PERFBOOK shows ads.
Which is updated more often, Video Delay Instant Replay or PERFBOOK?
Video Delay Instant Replay ships an update every 2 weeks, and PERFBOOK every 3 months. Most recently, Video Delay Instant Replay was updated on November 6, 2026 and PERFBOOK on November 6, 2026.

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