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Logging apps for when you need evidence: divorced parents log every handover and the kids' condition, sealed on the spot with an SHA-256 fingerprint, subscription. Can be ported to rental disputes, workplace bullying, medical records
Watching Worth tracking · a small need in a specific group First spotted 2026-11-01 · last updated 2026-11-02
- Status
- Watching (single sample; upgrade only when a second scenario or a second similar product takes off)
- Why now, and how long the window lasts
- Strong emotions, willingness to pay, and a legal edge that keeps big companies away. One person can build it in a few weeks. If the established co-parenting platforms add "evidence sealing", this angle is gone. Their timing is the window to watch (estimated 6–12 months).
- Confidence
- Low (single sample, only 279 ratings). Reversal condition: Documented drops out of the us Productivity Top Grossing top 200 within 30 days, and its ratings stop growing. Upgrade conditions: another "evidence record" app (rental, workplace, medical) enters the top 100 of any major region's category Top Grossing, or Documented enters the us Productivity Top Grossing top 50.
Evidence
Grouped by store. Each group starts with the charts that can be graphed (real curves, data dates below the chart), then the scanner's original notes and source links.
App Store2 evidence items · 1 products with curves
Documented: Custody Logs Rise Advertising LLC
App Store · launched 2026-08-19 · US store rating 303 · charted in 11-08 of 10 stores
KY #92
Data day 2026-11-04, only 1 days so far. Lower rank is higher; gaps are days it wasn't charted
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Best rank across each day's category charts
- App Store (us, 11-02): Documented: Custody Logs (6791808503, Rise Advertising LLC, 1 apps, 2026-08-19 debut), Productivity Top Grossing #134 (10-28 #144 → 10-30 #104 → 11-01 #146 → 11-02 #134). us rating 279 (10-28 is 188,5 days +91). Also Productivity Top Grossing #111 in ca, #129 in au, and #67 in pe. Report: average written reviews 4.8; the daily rating gain is 4 times the lifetime daily average.
- App Store / Google Play (established comparisons, 11-02): OurFamilyWizard has 56,695 iOS ratings, Play us Parenting Top Grossing #1. TalkingParents has 28,750 iOS ratings, Play #2. AppClose has 1.35M installs on Play. They focus on two-party communication and scheduling calendars, not one-sided evidence keeping.
Google Play1 evidence items · 3 products with curves
Documented: Custody Logs Rise Advertising LLC
Google Play · Launched 2026-09-03 · 11-02 installs 5,854
Data 2026-10-31 → 2026-11-02 (3 days, 3 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed.
Data 2026-11-01 → 2026-11-02 (2 days, 2 observations)
Kindar: Co-Parenting HP Digital Labs
Google Play · Launched 2026-06-18 · 11-07 installs 1,402
Data 2026-10-29 → 2026-11-07 (10 days, 10 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed.
CustodyLog: Custody Journal Mobilia Apps
Google Play · Launched 2026-07-19 · 11-01 installs 936
Data 2026-10-30 → 2026-11-01 (3 days, 3 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed.
Data 2026-10-30 → 2026-11-01 (3 days, 3 observations)
- Google Play (11-02): Documented co.documented.app (9-03 on Play) has 5,854 installs and 9 ratings, not on the top charts. Similar new products: Kindar: Co-Parenting (com.kindar.app) has 1,140 installs; CustodyLog (com.ilyas.ilyasapps.custodylog) has 936 installs.
Qualifying list 1 pieces of evidence
- Qualifying list (11-02): Documented is on the tracking list, flat, with a two-day rating gain of 46.
Meta Ad Library1 evidence items
- Meta Ad Library (11-02): searched "custody"; no apps of this type are running ads.
Other sources (official sites, press releases, web pages) 1 pieces of evidence
- Web (app description): "Months later, what you write is memory; what you wrote back then is evidence." The new version can import SMS screenshots.
Already doing it
Documented, Kindar, CustodyLog; established players OurFamilyWizard, TalkingParents, AppClose, 2houses.
The hardest step
Getting lawyers and courts to accept the record; the wording can't be read by Apple as legal advice. When switching to other scenarios (rental, workplace, medical), the acquisition channels are completely different.
Who it's for
Individual developers who have been through divorce, rental disputes, or workplace disputes; iOS subscription; start in the US.
Should every product builder know this?
No.
Change log
2026-11-02
Backfill check: us Productivity Top Grossing #146→#134, rating 272→279. Also entered Productivity Top Grossing in ca, au, and pe. The Play version still has only 9 ratings.
2026-11-01
First recorded (backfilled from "App Store New Opportunities" §1.7, "Google Play New Opportunities" §4.1, and "Stringers" §3.8; data as of 2026-11-01).
Original: Scanner opportunity library #024 (updated daily, 06:00); this page was generated on the 2026-11-08 edition.