ReplayR for cricket coaches

TL;DR. Cricket divides cleanly into deliveries, and the one you want to review is always the one you just watched. A 45-second rolling buffer holds the run-up, the delivery and the shot, so you tap after the fact and still capture the cause. Use 3 minutes on Pro to review a whole over. Nets sessions of any length use fixed storage. On-device only, no subscription.

The delivery is the unit

Cricket divides more cleanly into reviewable units than almost any other sport. One delivery, one run-up, one shot. The problem has never been identifying the unit, it has been capturing it, because the delivery you want to look at is always the one you just watched rather than the one you were ready to film.

A rolling buffer removes the need to anticipate. ReplayR keeps the last 45 seconds continuously, which comfortably contains a fast bowler's run-up, the delivery, and the shot. The batter plays across the line, you tap, and the whole sequence is saved, including the trigger movement before the ball was bowled.

An over is six legal deliveries under the MCC Laws of Cricket and takes roughly three to four minutes in real time, which is why the 3-minute Pro buffer is the right choice if you want to review a whole over as a passage rather than a single ball. For nets work, 45 seconds per delivery is almost always the better setting.

Why cricket coaches pick ReplayR

Run-up and delivery in one buffer

45 seconds captures the approach, the delivery stride and the shot. The cause of a technical fault is usually in the run-up, which conventional after-the-fact filming always misses.

Nets sessions, hundreds of balls

The buffer overwrites itself continuously, so a two-hour net session uses no more storage than a short one. Only the deliveries you saved are ever written to disk.

Technique review at 0.25×

Front-arm position, head position at release, trigger movement, bat path. Slow-motion playback shows the gross mechanics clearly without needing a specialist camera.

Hands-free when you are the one batting

Open-palm gesture save on Pro means a player working alone in the nets can save their own delivery without walking back to the phone between balls.

A typical nets workflow

Setup. Tripod side-on, outside the net. Stump height for batting work, delivery-stride height for bowling work. Buffer 45 s. 1080p or higher on Pro. Stealth mode on.
Start of the session. Tap Start on the watch or the phone.
During the session. Tap after any delivery worth reviewing. The run-up that preceded it is already in the buffer.
Between bowlers. Leave it running, or reposition the tripod if you are switching from batting work to action work.
End of session. End on the watch, swipe through the saved deliveries.
Afterwards. Trim to the delivery, drop to 0.25×, and share videos with the individual player. For detailed action work, export the MP4 into a dedicated analysis app.

What to save, what to skip

Save

Dismissals in match play, and the ball before
Deliveries where the bowler lost rhythm in the run-up
Trigger movements against pace and spin
Shots played across the line or with a closed face
A model delivery from each bowler as a reference
Any ball the player asks about

Skip

Throwdowns and warm-up feeds
Deliveries where nothing changed from the last one
Field changes and drinks breaks
Long spells of unchanged, technically sound repetition

FAQ

What buffer length suits cricket?

Forty-five seconds is enough for a single delivery including the run-up, and that is the unit that matters for both bowling actions and batting technique. A fast bowler's run-up plus delivery plus the shot rarely exceeds twenty seconds, so 45 gives you comfortable margin either side. If you are reviewing a whole over as a unit, use the 3-minute Pro buffer, since an over takes roughly three to four minutes of real time including field changes.

Can I use it for bowling action analysis?

For the gross mechanics, yes: run-up rhythm, front-arm position, hip-shoulder separation, follow-through. Slow-motion playback at 0.25× shows all of these clearly at 1080p. What ReplayR does not provide is frame-by-frame stepping, angle measurement or drawing tools, which is what a dedicated biomechanics or analysis app is for. Export the MP4 and continue there. Also note that any serious action assessment, particularly around legality of elbow extension, needs proper testing rather than phone video.

Where do I put the phone in the nets?

Side-on to the batter at roughly stump height for batting technique, and side-on to the bowler's delivery stride for bowling actions. These are two different positions, so decide which you are working on before the session rather than compromising between them. Net sessions are the easiest cricket filming environment because the distances are fixed and short. Keep the phone outside the net itself, a cricket ball will end a phone.

Does it work for a full match?

It works, but think of it as a tool for capturing deliveries rather than recording matches. A full day of cricket is far longer than any phone battery, and the rolling buffer is designed to give you the last delivery on demand, not an archive. Coaches typically use it in the nets and during specific spells rather than continuously. If you genuinely need a full match archive, use a dedicated fixed camera and treat ReplayR as the tool for the moments you want to coach immediately.