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Custom Fantasy Leagues vs Sleeper
Sleeper is a free multi-sport fantasy platform, best known for American football and basketball, which also runs Premier League fantasy leagues. It is mobile-first, heavily social — league chat is built into the product rather than bolted on — and its commissioners get extensive control over scoring, rosters and waivers.
What Sleeper does better
Putting this first because a comparison that finds no merit in the alternative is an advert.
- It is free, with no paywalls, subscriptions or display ads.
- It offers draft, auction, keeper and dynasty formats today. We have classic only, with draft and auction on the roadmap.
- The mobile app is excellent, and league chat being built in rather than happening in a separate group thread is a genuine difference to how a league feels.
- It covers several sports, so a group that plays fantasy across codes can keep everything in one place.
- Keeper and dynasty formats carry rosters across seasons — something we do not do at all.
Where they differ
| Sleeper | Custom Fantasy Leagues | |
|---|---|---|
| Player prices | Squads are built by drafting or auction rather than from a priced market derived from scoring. | Prices are computed by running last season through your rules, so the players your league values are the ones that cost. Change a rule and the whole market moves. |
| Focus | Multiple sports and multiple competitions, with football one offering among several. | Football only, one competition — narrower by choice, so the scoring engine and pricing model can be built around it. |
| Rule shapes | Customisable scoring and roster settings. | Four rule shapes — per action, per N, bounded bands and per-match milestones — plus conditions gating any rule on another stat, such as "only when the player passed 60 minutes". |
| Scoring transparency | League scoring settings with in-app reporting. | Every point traces to a named rule and a raw stat in the per-player breakdown, including rules that scored zero and rules a condition suppressed. |
| Where it lives | Mobile-app-first, with a web presence. | A mobile-first website. No app to install, and no app-store release cycle between a fix and you having it. |
Choose Sleeper if…
- You want draft, auction, keeper or dynasty formats now.
- Your group plays fantasy across several sports.
- League chat and the social side matter as much as the scoring.
- You want it to cost nothing at all.
Choose Custom Fantasy Leagues if…
- You want prices derived from your own scoring rather than a draft order.
- You want conditional and milestone rules the mainstream games cannot express.
- You want a football-first product where the scoring engine is the point.
Details about Sleeper last checked 9 August 2026, from publicly available information. Products change; if something here is out of date or wrong, tell us and we will fix it. Custom Fantasy Leagues is an independent product and is not affiliated with, endorsed by or connected to Sleeper.
Free for the founding season.
Leagues cost credits, and we are giving founding managers 100 of them — enough to run a full 38-gameweek season for up to twenty managers. No card, no trial timer.
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