Borderline: Baseball Ump Game

Lucas Azzopardi · Games

4.8 16 ratings Free

Independent analytics for this App Store listing. AppTracker is not affiliated with Lucas Azzopardi.

Chart standing · US

Not currently charting in this storefront.

What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Oct 12, 2026
Rating ★ 4.93 → 4.75
Sep 21, 2026
Rating ★ 4.92 → 4.93
Aug 31, 2026
Rating ★ 5 → 4.92

Price & rating history · US

Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.

Average rating history over the observed period. 4.8 4.9 5.0 Aug 29 Sep 9 Sep 21 Oct 3 Oct 15

Average rating · ★ 4.75 now · 3 changes on record

Ratings breakdown · US

The star breakdown behind this app's rating in this storefront.

5★ 88% 14
4★ 6% 1
3★ 0% 0
2★ 6% 1
1★ 0% 0

In-app purchases · US

What this app sells inside itself, grouped by kind and priced for this storefront.

One-time purchases
Premium $2.99

Screenshots

About

Think you can outperform a Major League umpire? Put your eye to the test with real Statcast pitch data — the same technology MLB uses during official ABS challenges. Every pitch in Borderline is a real called pitch from a real MLB game. You see the ball fly in from the pitcher's perspective, and you have to call it: ball or strike. Then the rulebook strike zone appears, and you find out exactly where it landed — and whether the umpire behind the plate got it right. REAL MLB DATA Every pitch comes from Baseball Savant's Statcast database. Real coordinates, real spin rates, real umpires — no simulations. If Laz Diaz blew a call, you'll see exactly why. THE ABS STRIKE ZONE Borderline uses MLB's Automated Ball-Strike system rules. If any part of the ball touches the rulebook zone, it's a strike — the same standard used in official ABS challenges. The batter's zone height adjusts dynamically per player. FOUR WAYS TO PLAY Arcade — 10 random borderline pitches. Quick, free, addictive. Daily Challenge — 10 blown calls from yesterday's games. Same pitches for every player worldwide. Share your score. Full Game — Pick any real MLB game. Call every pitch in order with live count, score, and batter data. [Pro] Blown Calls — Filter any game to only the pitches the umpire missed. [Pro] PERSONAL STATS Track your accuracy over time. See which pitch types fool you most and where in the zone you struggle. Are you better on fastballs or breaking balls? Inside or outside? UMPIRE SEARCH Find every game called by a specific umpire this season. Search for Laz Diaz, Angel Hernandez, or CB Bucknor and relive their worst games. [Pro] FREE TO PLAY Arcade mode and Daily Challenge are always free. Borderline Pro is a one-time purchase that unlocks full game browsing, umpire search, and blown calls mode — no subscription, ever. Data sourced from Baseball Savant (Statcast) and the MLB Stats API. Not affiliated with or endorsed by MLB. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

What's new · 1.0.1

Added Game Center leaderboard, improvements to pitch visuals to be more realistic.

Details

ReleasedMay 2026
UpdatedJun 2026
Version1.0.1
Size5.3 MB
RequiresiOS 26.5 or later
Age rating4+
LanguagesEnglish
PriceFree
Categories GamesSimulationSportsSports
Bundle IDcom.lucasazzopardi.UmpChallenge