Two balls race through layers of ever bigger numbers, Fibonacci against factorial, primes against squares. Every race is balanced to end close at the length you pick, and BounceReel records it as a vertical MP4 for Shorts, TikTok and Reels: a new matchup every roll, nothing to edit.
Records in Chrome or Edge on a computer. Why
Three steps, all in your browser. The race is worked out before it plays, so what you see is what gets recorded.
The dice picks two of fifteen number sequences and balances the race at once: it ends close, and on time for your video.
Slow Factorial Ball wins by 0.3 s
From 20 to 90 seconds in the studio, a photo finish or a gap you pick, three looks, and a narrator, the music alone or silence.
The free plan makes up to 30 s in the paper look, with music or silence; the paid plans make all of this.
Fibonacci Ball vs Slow Factorial Ball, 30 s, night look, muted
Record writes an MP4 at the length you set that ends on its first frame, so the replay has no cut. Upload it to Shorts, TikTok or Reels as it is.
Three recordings from the studio, one in each look, 30 seconds each, shown here smaller and muted.
Watch more races. BounceReel posts its own on TikTok, Instagram and YouTube: pick a side in the comments.
What keeps people watching, done for every race, so you only pick and post.
A race that stays close, a question for the comments, and a replay with no cut.
Speeds are set so every race ends close, a photo finish or a gap of 1 to 10 s that you pick, and the video comes out at the length you set.
Race22.9 s of a 30 s video
It names both balls, gives each a line and ends by asking viewers to pick a winner: the answer goes in the comments. The narrator comes with the paid plans; every plan records music only or silence.
“Fibonacci Ball versus Slow Factorial Ball! Fibonacci adds up its last two hits. Slow Factorial multiplies by the next number. By its twentieth hit, Factorial deals over two quintillion. Which one are you betting on?”
The last half second fades into the first frame, so when the app plays it again there is no cut.
One roll makes a new matchup, balanced and ready, with nothing to edit: posting every day takes minutes.
Paper, as the format's biggest channels draw it, and BounceReel's cards, at night or by day. Only the drawing changes: press one to see it play.
The dice pairs two number sequences that make a race, and balances it at once.
A ball can speed up, slow down, grow or split, and a gold tag beside its name tells viewers which. On the paid plans.
Every floor hit makes it faster.
A file the apps take as it is, laid out around their buttons, and a library that remembers how each one was made.
Each recording is listed with its settings and, once you paste them, its YouTube, TikTok and Instagram links. Open one in the studio and it plays out again, frame for frame.
The names, the top race and the VS stay clear of the apps' top bar and side buttons; only the bottom card's last layers run under the caption, as on the format's biggest channels.
An MP4 with H.264 video and AAC sound, which Shorts, TikTok and Reels take as it is.
Start free, no card needed. The paid plans make more videos a day, longer, in every look, with the narrator and powers, and no watermark.
Anything else? Write to hello@bouncereel.com.
Chrome or Edge on a computer: they record the MP4 (H.264 video, AAC sound) that Shorts, TikTok and Reels take as it is. Firefox records WebM, which TikTok and Instagram want converted first. Safari is not tested yet. The studio shows which format your browser writes, beside Record.
Not yet: the studio needs a computer. The videos are made for phones, though: vertical and full size, ready to post from wherever you post.
No. Each recording comes out at the length you set, with the race, the winner card and the fade back to the first frame. Upload the file as it is.
As close as you ask. A photo finish puts the loser 0.15 to 1.1 seconds behind the winner; or pick a gap of 1 to 10 seconds. Either way the speeds are set so the video comes out at the length you chose.
On the free plan, a small BounceReel watermark, the mark and the site's address, sits between the two cards of every video. The paid plans have none.
Yes. Record with music only or silent, then add a sound in TikTok, Instagram or YouTube when you post.
It comes with the paid plans, at no extra cost: the narrator is Kokoro, a free voice that runs in your browser, so what it says is made on your computer. The first time, your browser downloads the voice once.
Yes. The studio's Voice tab plays each voice saying your matchup, on every plan.
Yes. Every race comes from a seed, and your library keeps each video's settings: open one in the studio and it plays out again, frame for frame.
The MP4 downloads to your computer. Your library keeps each video's settings and links, not the file: the settings are enough to make the same video again.
A recording still downloads; it is just not added to your library until you delete one there, or move to a plan that keeps more.
On your account page. The account, its videos and their links are deleted at once.
