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LibraryFree chainsPricing
AppsFounder storyStudy & education apps30s · 9:16Best on Gemini Omni Flash

31 years teaching chemistry, same three mistakes

A retired chemistry teacher explains that her students made the same three mistakes every year, so she built a practice app that catches them as you work, and shows a letter from a former student.

Example product
Benchmole — A chemistry practice app that spots common mistakes in each step of a problem
Audience
High-school and first-year chemistry students, and their parents
Creator
Retired chemistry teacher turned founder, late 50s

Variables — swap these for your product

{{APP_NAME}} = Benchmole{{YEARS}} = thirty-one years{{OFFER}} = The first unit is free

01 · hook

Same three mistakes

0–3s

“{{YEARS}}. Same three mistakes. Every single year.”

Vertical 9:16 selfie video, medium close-up, phone on a small tripod at eye level. a 58-year-old white woman with a cropped silver pixie cut, blue-framed glasses, a navy cardigan over a striped Breton top and a molecule-shaped pendant necklace sits in a home study in the morning, a faded periodic-table poster and a shelf of old ball-and-stick molecule models behind her, daylight from a window on the left. She holds up three fingers to the lens with a wry, teacherly look over her glasses. She says: "{{YEARS}}. Same three mistakes. Every single year." Static camera, soft daylight from the left, natural skin texture, shot on iPhone front camera, unpolished home video. No captions or on-screen text.
duration
3 s
aspect ratio
9:16
resolution
720p · 24 fps
audio
always on — normalise to −14 LUFS in the edit
image urls
creator, setting (guides look, doesn't lock frame 1)

Shot list

  1. 0.0–3.0sMCU. Three fingers up, delivers line over her glasses

On-screen text (overlay in edit)

31 years teaching chemistry. same 3 mistakes.

Audio

Quiet room tone, a clock ticking

References

creatorsetting

02 · demo

Why she built it

3–12s

2 shots, 3 model prompts, settings and captions in the full library.

Unlock

03 · proof

The letter

12–22s

2 shots, 3 model prompts, settings and captions in the full library.

Unlock

04 · cta

Do one problem

22–30s

2 shots, 3 model prompts, settings and captions in the full library.

Unlock

Launch offerLaunch pricing ends Sunday

The hook is free. The rest is in the Apps & SaaS edition.

Unlock this chain + 119 more.

Demo, proof and CTA prompts in three model dialects, settings, shot lists, captions and reference-image guidance — for every chain in the edition, plus 30 sample ads.

Get the Apps edition — $19 $49Both editions — $29 $79

One-time, no subscription · 7-day refund before first download · personal & client use

Why it works

Thirty-one years of marking is authority you can't fake, and naming the three mistakes makes students and parents nod before they know the product. The letter is human proof, not a statistic. The CTA asks for one problem, which matches how students actually try an app.

Hook variants to A/B test

  • “I marked chemistry homework for thirty-one years. Here's what I learned.”
  • “Your chemistry teacher can't sit next to you. This can.”
  • “Retired chemistry teacher. Still correcting the same mistake.”

Reference images

  • creator

    Shoulders-up photo of the founder in the navy cardigan, blue glasses and molecule pendant, morning light

  • setting

    Home study with periodic-table poster and shelf of ball-and-stick models, window on the left

  • screen

    Your app's step-by-step problem view with one step flagged and its hint, as 9:16 PNGs

  • endcard

    App icon, app name, offer line and store badges (or URL) on a plain background

Creator look (paste into your image model)

Woman, 58, white, cropped silver pixie cut, blue-framed glasses, navy cardigan over a striped Breton top, molecule pendant necklace. Home study, morning, faded periodic-table poster and shelf of old molecule models, daylight from a window on the left.

Model notes, last verified 2026-10-16: Provisional: written to Kling 3.0 conventions (3.0-compatible) until 4.0 publishes its own. 3, 5 or 10 s only; audio always on; add captions in post.

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