Signal scorecard — TV cancellation ending checker
Buildability 1–5: 1 = hard blocker, 2 = major unsolved dependency, 3 = buildable with significant constraint, 4 = manageable risk, 5 = clear launch path.
2 signals from Reddit — June 19–20, 2026
Two-day combined window (Jun 19–20): one primary signal from r/SomebodyMakeThis — a website that tells users whether a cancelled TV show has a proper ending or an unresolved cliffhanger (buildability 4/5, go verdict); one borderline signal from r/apps — a non-binary red/yellow/green habit tracker (lower-confidence, 3/5 conditional).
This issue covers two days: Jun 19–20. The Jun 19 run produced zero qualifying signals; this window is combined to capture both days. Coverage: Jun 18 13:21 UTC → Jun 20 18:00 UTC. Platform: r/SomebodyMakeThis (primary), r/apps (probed, rejected as regular source).
Quick scan
| # | Idea | Upvotes | Source | Gap status | Buildability | Verdict |
|---|---|---|---|---|---|---|
| 1 | Website: does a cancelled TV show have a proper ending or an unresolved cliffhanger? | 3 | r/SomebodyMakeThis | Confirmed — cancellation trackers tell you IF cancelled, not whether the finale resolves | 4 / 5 | Go |
| 2 | ⚠️ Non-binary habit tracker with red/yellow/green + calendar pixel view | 1 | r/apps (lower-confidence source) | Likely gap — existing trackers are binary yes/no, but 0 community validation | 3 / 5 | Conditional / low confidence |
Signal 1 — TV cancellation ending checker
Source: r/SomebodyMakeThis, posted Jun 19, 2026 at 11:07 AM EDT. Comment by u/mortenfriis in a builder-soliciting thread ("Can anyone please give me an idea for a website?"). Score: 3 upvotes, highest-scored comment in the thread. 1
コンテンツカードを読み込んでいます…
The request is one sentence, and it's sharp:
"A website that lets me know if a cancelled show has a proper ending or if it will leave me furious about the non-resolved cliffhanger. Thanks!" 2
The pain this describes is specific: you find out a show was cancelled, you start watching it anyway, you finish three seasons — and the story ends on a cliffhanger that will never be resolved. The sunk cost is hours of your time. The user wants to know that before they start.
What existing tools cover — and where they stop
TVSeriesFinale.com and IsMyShowCancelled.com both answer the cancellation question well. 1 They tell you a show ended; they do not tell you whether it ended satisfyingly. DoesTheDogDie.com catalogs content warnings — violence, self-harm, jump scares — but does not track cancellation endings. No tool surfaced in research that specifically answers "does the finale resolve the story arc, or does it cut off mid-plot?"
The broader demand isn't isolated. A separate r/netflix thread produced an independent expression of the same need: "There should also be a website which tells you which shows end on a cliffhanger so you don't waste your time." That's two independent signals in the same crawl window pointing at the same gap.
One uncertainty to flag: three nested replies under u/mortenfriis's comment were hidden behind a Reddit pagination cursor and could not be fetched. They may or may not mention an existing solution. If they do, this signal gets downgraded. As of the data available, no existing solution was identified. 2
統計カードを読み込んでいます…
What the product actually is
The simplest version is a wiki-style database: you search for a cancelled show, you get a single-field verdict — Resolved, Partial resolution, or Cliffhanger — with a spoiler-free one-line summary of what happened. The entry also links to TVSeriesFinale or a Wikipedia episode list for anyone who wants more detail. That's it. No accounts required, no streaming integrations, no recommendation engine.
The more compelling version adds a browser extension that overlays this verdict directly on Netflix, Prime Video, Max, and Hulu show pages. A small badge — green checkmark, yellow warning, red X — next to the show's title. A user who already knows what show they're looking at gets the answer in half a second without searching anywhere.
Community contribution is the flywheel. The hard part of building this isn't the tech, it's seeding the database with accurate verdicts for several hundred popular cancelled shows. That's an afternoon of volunteer labor for a moderately engaged TV community — r/television, r/netflix, r/cancelledTV — not a product bottleneck.
Build path
A static site backed by a simple database (Supabase or even Airtable for MVP) with a search interface. The extension is a few hundred lines of JavaScript. The cost to launch is effectively zero; the cost of maintaining it long-term is moderation bandwidth, not infrastructure.
The moat is the data. Once the database has solid coverage and community trust, it's hard to replicate quickly — the same dynamic that makes Letterboxd defensible despite being technically simple.
Buildability: 4/5 — the gap is confirmed, the build is straightforward, the distribution path (TV communities + browser extension) is clear. The 3 unfetched replies are the only meaningful uncertainty.
Signal 2 — Non-binary habit tracker (lower-confidence signal)
⚠️ This signal comes from r/apps, which was probed this window and rejected as a regular source — 62.5% of posts on that subreddit are builder self-promotion, and signal purity was 4.17% across 24 posts. The post below had score=1, 0 comments. Include in your evaluation with that context in mind.
Source: r/apps, posted Jun 20, 2026 at 7:32 AM EDT by u/TheBronJames2000. Score: 1 upvote, 0 comments. 3
The ask: a habit tracker that replaces binary done/not-done with a three-level scale — red (missed), yellow (partial), green (done) — displayed in a GitHub-style contribution calendar where each day shows its color. The user posted a reference screenshot of the UI they had in mind and noted that all current habit trackers only support yes/no.
"All habit trackers seem binary (yes/no)." 3
The demand observation is likely accurate — most popular habit trackers (Streaks, Habitica, Habit Tracker by Simple Design) operate on a streak/completion binary. A multi-level intensity tracker does fill a specific niche (think runners who want to distinguish "ran 5K" from "ran 2K" from "rest day," not just "did or didn't run"). The idea isn't novel — Nomie and Loop Habit Tracker on Android allow numeric inputs, and some calendar-based productivity apps support color tagging. Whether those constitute adequate solutions is unclear; no one replied to validate or refute.
Buildability: 3/5 conditional — the concept is technically simple, but the lack of any community engagement means there's no validation that existing tools fall short, and no sense of how many people want this versus the one poster who asked.
Source pool status
r/SomebodyMakeThis — 1 qualifying signal from a 52-hour window that spans a weekend. The subreddit posted 7 in-window threads total; 3 were builder-soliciting or promotional and disqualified on inspection, 1 was a project showcase, 1 was a product promotion post. Signal volume was low but within the subreddit's weekend baseline (roughly 1.5–2 posts/day). 4 Status: active, low-activity window.
r/apps — probed for the first time this window. Rejected as a regular source. 62.5% of the 24 scanned posts were builder self-promotion; only 1 post (4.17%) expressed genuine consumer unmet need, and that post received score=1 with 0 comments. The subreddit has 111,322 subscribers but functions as a promotion channel, not a consumer problem space. 3 Not recommended for ongoing monitoring.
Expansion candidates still untested: r/androidapps, r/iosapps, r/firstworldproblems, r/ADHD.
Cover: AI-generated illustration.
このコンテンツについて、さらに観点や背景を補足しましょう。