Rally Almanac
A pocket baseball history book that compares your favorite team's current hot (or cold) streak against decades of comparable runs, with trade-deadline context woven in.
die-hard MLB fans tracking their team's mid-season momentum and deadline moves
- Streak Comparator: feed your team's W/L log and the app finds the 20 most similar streaks since 1900 with what happened next — playoff runs, collapses, or sell-offs.
- Deadline Diary: a personalized timeline of trade rumors with fan-sentiment pulse, prospect rankings, and AI summaries of beat-writer takes.
- What-If Replay: simulate the impact of a rumored deadline move on the team's playoff odds using historical analogs.
Boston just tied their 80-year-old franchise winning-streak record (last set by Ted Williams's 1946 club) at the same moment their trade-deadline plans flipped from sell-mode to buy-mode — fans are living through a rare collision of history and roster drama.
The Red Sox 2026 streak tying the 1946 record drew major coverage (USA Today, MLB.com, SI, CBS Sports), and SI literally published a 'Comparing the 2026 Red Sox to the Last Sox Team to Win 15 in a Row' feature, validating the hook — but 'die-hard fans tracking streaks' is a narrow subset of a sport where most casual fans use the free MLB app.Comparing the 2026 Red Sox to the Last Sox Team to Win 15 in a Row ↗Red Sox winning streak ties all-time Boston record with 15 in a row ↗
InfieldFly is launching June 2026 at $4.99/mo per team as a premium 30-team MLB fan app with Overview/Gameday/Players/League/News tabs — but its 5 tabs include NO historical-streak comparison or almanac feature, leaving a clear niche. However, FanGraphs, Baseball Savant, Stats.Fan, and The Diamond Lab already cover general stats/comparisons, and the streak-comparison angle is currently served by editorial articles rather than a dedicated product.InfieldFly — The Premium MLB Fan App ↗The Top 8 Must-Have Apps for Baseball Fans ↗
InfieldFly's $4.99/mo single-team ($39.99/yr) and $19.99/mo all-access pricing proves die-hard fans will pay for premium MLB apps, and MLB.TV anchors a $80–150/yr willingness-to-pay tier — but Rally Almanac is a single feature (historical streak comparison), making it hard to justify full $4.99/mo pricing; realistic positioning is $2.99/mo seasonal or a content/subscription bundle.InfieldFly — The Premium MLB Fan App (pricing) ↗MLB.TV Out-of-Market Packages ↗
Historical comparisons are inherently evergreen (the 1946 streak stood 80 years and just got broken), and baseball fans consume nostalgia/trivia year-round, but the trade-deadline 'flipped from sell to buy' angle is a 2-week window per year, making the core use case seasonal (April–October) with offseason dropoff.Comparing the 2026 Red Sox to the Last Sox Team to Win 15 in a Row ↗
Historical MLB data is freely available via the MLB Stats API, Retrosheet, and Baseball Reference; building a PWA comparison engine (as InfieldFly demonstrates) is achievable by a small team, but curating 100+ years of streak/team-comparable data, sourcing reliable trade-deadline history, and matching the polish of incumbent stats sites is real work.FanGraphs Baseball | Baseball Statistics and Analysis ↗Stats.Fan - MLB Statistics & Analytics Platform ↗