DiamondKeeper keeps score, streams the game from a phone, and lets families follow live — free — while helping you see the whole athlete: workload, recovery and arm care across every team, not just one game.
A pitcher’s arm doesn’t know whether the pitches were for club, school, Little League, a lesson, a bullpen, a showcase or a tournament — the athlete feels the total. DiamondKeeper connects game activity to the whole athlete: workload, recovery and arm care, across every team.
Club Saturday, tournament Sunday, a Tuesday lesson, Wednesday practice, a Thursday bullpen — each coach sees only their piece. DiamondKeeper pools a pitcher’s counts and rest across teams so the family sees the cumulative load. The workload belongs to the athlete, not the team.
A family-controlled arm-care history that builds as you go — game pitch counts, required rest, velocity trend, and a quick “how’s the arm?” check-in. Building now; more sources (lessons, bullpens, showcases) are on the way. Informational — not a medical device.
Development isn’t only games and reps — it’s rest, arm-care work and multisport. DiamondKeeper makes responsible rest visible instead of treating a quiet week as missing data. More baseball isn’t always better baseball.
DiamondKeeper helps families monitor throwing workload, recovery, arm-care habits and athlete-reported information so they can make better-informed decisions. It provides informational tools and is not a substitute for professional medical advice, diagnosis or treatment — it does not prevent injuries or determine whether an athlete is safe to pitch. Any pain or persistent soreness: see a qualified medical professional.
Built by a local baseball parent, for coaches, umpires, families, and leagues.
Pitch-by-pitch with a tap strike zone, spray charts, pitch velocity, steals and base-running, and one-tap umpire calls — obstruction, interference, ground-rule double and more — with a built-in legend. Not sure how to score a play? Describe it, or say it out loud, and the app tells you the exact button.
Live game clock with a time-limit alert, pitch-count compliance with required rest, pitcher-eligibility list, and call review with slow-mo frame-step.
A team-wide Arm Care tab tracks every pitcher’s workload and required rest (Pitch Smart–style), Fatigue Watch flags a tiring arm from a velocity drop, and a league-wide report catches anyone over the max or on short rest.
Pool every pitcher’s counts across the whole tournament weekend against your org’s rules — USSSA, Perfect Game, Nations, Little League — so you always know who’s still eligible before the next game, not just this one.
Auto-build a fair rotation that guarantees Little League, PONY, Cal Ripken, or Babe Ruth mandatory-play minimums — and flags anything that won’t comply.
Batting and pitching stats that build all season, plus downloadable spray and strike-zone charts for every player.
Season leaderboards and an all-time record book (down to stolen bases), with tap-to-share player moment cards.
A one-tap official game report for the scorebook, plus an auto-written news-story recap with an animated top-plays reel.
After every game, get a warm, personalized write-up of how your player did — the hits, the RBIs, the big moment — ready to text to family in a tap. Fresh every game, and built privacy-first: only your player’s stats, never used to train anyone’s AI. Free.
Every player gets a clean, shareable profile — grad year, positions, measurables, highlight-clip links, and a season stat line that’s verified game-by-game in DiamondKeeper, not self-reported. Open it in any browser, print it, or send the link to a college coach.
Go live from a phone in one tap, or a Mevo/OBS camera — straight through your own stream, no YouTube or Facebook. Families watch on a share link. How to stream a game free →
A share link + QR shows the live scoreboard, the field with every player by first name and last initial so you can spot your kid, spoken play-by-play, win probability, box score, and video — no login, nothing to pay.
Real screens from a live DiamondKeeper game — scoring, streaming, arm care, stats and scouting, all on a phone.
Coaches keep score, parents follow along, umpires stay compliant, and league admins get a real dashboard.
Every game feeds season batting & pitching stats, spray and strike-zone charts, live Leaders, and an all-time Record Book. Finish a game and DiamondKeeper writes a one-tap official report for the scorebook plus an auto news-story recap with a top-plays reel — ready to share.
The same game tools as the big names — but families watch free and nothing’s locked behind a paywall.
| Feature | DiamondKeeper | GameChanger | Rizzler |
|---|---|---|---|
| Free to keep score | ✓ | ✓ | ✓ |
| Team scheduling (games, practices, events) | ✓ 5 free, then Coach | ✓ | ✓ |
| Families follow live — free, no paywall | ✓ | Paid | Paid |
| Live box score while watching — free | ✓ | Paid | Paid |
| Season & career stats | Paid | Paid | Paid |
| Recruiting / athlete profile for college coaches | ✓ | Paid | Partial |
| Live video streaming | ✓ free | Paid after 5 free | ✗ |
| Bring your own camera (Mevo/OBS/GoPro) | ✓ | ✓ | ✗ |
| Auto lineup from stats | ✓ Coach | ✓ | Paid |
| Rules-legal fielding rotation (mandatory play) | ✓ | ✗ | Partial |
| Pitch-count safety + required rest | ✓ | ✓ | ✓ |
| League-wide pitch-count report | ✓ | ✓ | Partial |
| Umpire tools (clock, eligibility, call review, report) | ✓ | ✗ | ✗ |
| One-tap umpire calls (obstruction, interference, dropped 3rd strike) | ✓ | ✗ | ✗ |
| In-app scoring help — describe a play, get the call | ✓ | ✗ | ✗ |
| Tournament pitch-count pooling across the weekend (USSSA/PG rules) | ✓ | ✗ | ✗ |
| League dashboard (standings & schedule) | ✓ | ✓ | ✓ |
| No login for parents to watch | ✓ | ✗ | ✗ |
| Cost to families | Free | Pays to watch | Paid |
Looking for a free alternative to GameChanger? See how families watch for free →
Scoring and live viewing are free — always, including each game’s live box score and recap. Team plans and athlete add-ons unlock stats, video, the coaching toolkit, and running a league. Priced per season, not per month.
The things parents and coaches ask most before their first game.
Yes. Keeping score is free, and families follow games live for free — no account, no paywall, no trial that expires. That doesn’t change. Coaches and leagues can add optional paid tools, but scoring a game and watching your kid play are free, always.
The coach shares a link or a QR code. Tap it and you’re in — live scoreboard, the field with every player by first name and last initial, play-by-play, box score, and video. No login, no app to set up, nothing to buy. It opens in whatever browser is already on your phone.
No. DiamondKeeper opens right in your phone’s browser — there’s no app store involved. Add it to your home screen in a couple of taps and it works like any other app.
The biggest difference is who pays. In DiamondKeeper, families never pay to watch their own kid — live viewing, each game’s box score, and recaps are free. Season and career stats are a paid extra — a coach can unlock them for the whole team, or a family can add them. There are also tools built from actually coaching a team: umpire assist, and fielding rotations that guarantee mandatory-play minimums. GameChanger is a capable, mature app; the difference is the model, not a claim that we do everything better.
Yes. You can go live from a phone in one tap, or connect a Mevo or OBS camera. The stream runs through DiamondKeeper on your own share link — it doesn’t have to be posted to a public social account for families to watch.
Yes — DiamondKeeper covers both baseball and softball.
Yes. Leagues get a dashboard for teams, rosters, and schedules, standings that update as coaches score, a league-wide pitch-count safety report, and a public branded league page.
Your batting numbers can come with you. Export your team’s stats from GameChanger and import that file into DiamondKeeper, and the season totals carry on instead of starting again. GameChanger’s export only covers batting, so pitching and game-by-game history don’t come across. Rosters import in seconds. Stat import is a new feature, so check the numbers against your scorebook once they’re in.
Scoring and family viewing stay free, including each game’s live box score. Season & career stats are a paid extra — a coach unlocks them for the whole team (with the coaching toolkit), a league adds the dashboard, or a single family can add Stats+ for their player. See pricing for current details.
Every feature has to pass one test: does it help the adults responsible for a young athlete make a better decision for that athlete?
Children get one childhood. We believe youth baseball technology should help protect it.
We’re not against competitive baseball — we’re for responsible competitive baseball.
Open DiamondKeeper in any phone browser and add it to your home screen — or reach out about bringing it to your league.