The chain of custody
This page lists every source the research draws on. For each citation, the chain is the same path: from the claim in the body, to the citation marker attached to it, to the source itself. You can walk that path for any single claim without accepting the conclusion on trust.
The path, in one diagram
Claim in body → citation marker (e.g. [2]) → entry on this page → live source URL
Open the source URL in any citation entry below and read for yourself. If the cited passage doesn't say what we said it does, the methodology has failed and we want to know.
Source-type taxonomy
Sources are classified by what kind of source they are, so you can weigh each appropriately. The taxonomy is adapted from a legal-research convention used in our regulatory work; it transfers cleanly to consumer-tech research.
| Tier | Source type | Examples in this research |
|---|---|---|
| T1 | Manufacturer primary documentation | Official product pages; vendor feature pages |
| T2 | Official support / API / developer documentation | DAKboard API docs; vendor support knowledge bases |
| T3 | Long-form independent technical review | 2026 hands-on reviews on dedicated review sites |
| T4 | Reference / comparison aggregator | Multi-product buying guides; comparison roundups |
| T5 | Journalism / contemporary reporting | Tech-news coverage; product announcements |
| T6 | Community / vendor support forums | Vendor community threads; Reddit-equivalent discussions |
| T7 | Practitioner / hobbyist commentary | Personal blogs; specialist tutorials |
| UNT | Own synthesis (cites no external source) | The comparison + recommendation are the research's own work |
Citations
Nineteen citation slots covering the load-bearing claims of the comparison. Sources retrieved May 2026.
[1] DAKboard product page T1
"DAKboard is the only one of the five that lets you push your own content to the display."
[2] DAKboard API announcement & reference T2
"DAKboard has a real REST API (Plus/Pro tier)."
[3] DAKboard content-scheduling documentation T2
"Native scheduling per block (Weekly, Monthly, Custom days, time ranges, multiple schedules per block)."
[4] DAKboard hardware + service pricing T4
"~$470 hardware + Plus subscription ~$8/mo billed annually (~$96/yr) = ~$566 year 1."
[5] DAKboard setup-friction commentary T3
"Setup requires more time and patience; more technical than Skylight."
[6] Skylight Calendar product + pricing T1
"Skylight Calendar 15" hardware is $280; Plus subscription is $79/yr."
[7] Skylight Calendar real-family review T3
"Cleanest setup; great chore-and-reward system; reduces parent mental load."
[8] DAKboard integrations + DIY flexibility T1
"100+ integrations; can run on Raspberry Pi DIY."
[9] DAKboard API limitations — vendor admission T2
"API mostly updates text blocks (not full canvas) per vendor's own response to a user request."
[10] Skylight 2-way calendar sync T3
"Two-way calendar sync with Google, Apple, and Microsoft."
[11] Skylight Plus subscription deep-dive T3
"Photo screensaver and meal planner are behind the Plus tier ($79/yr)."
[12] Skylight: no official Calendar API UNT
"Skylight has no official API for the Calendar product. Unofficial reverse-engineered wrapper depends on undocumented internal endpoints."
Determined by research: the page at
support.skylight.global covers an unrelated company; an unofficial npm wrapper @eaglebyte/skylight-mcp exists but is reverse-engineered. See [19] for the namespace-collision finding.[13] Hearth Display review (real family) T3
"$699 + subscription. 27" only. Beautiful design. Best chore/routine system in the group with confetti and streak tracking. No Google Home or Alexa integration."
[14] Hearth: no programmatic API or content-push path T1
"No way to push custom content. Closest analog is the Hearth Helper AI that imports events from photos of paper calendars."
[15] Echo Show 15 review — specs + privacy T3
"15.6" Full HD; Fire TV built in; smart-home hub; ~$250-300; always-on mic + camera privacy consideration."
[16] Echo Show 15: sideloading a losing cat-and-mouse, no working method on current firmware T7
"Amazon has blocked sideloading on all Echo Show 15 and Echo Show 21 models after this guide was published. There is currently no way to sideload apps on Echo devices." (Per the author's standing update; the comment history shows workarounds repeatedly surfacing and then being patched — the Downloader app, the file explorer, then ADB access — rather than a one-time ban.)
[17] Nest Hub Max 2026 review T3
"$179-229 hardware; Face Match per-person personalization; built-in Nest Cam; 2018-2019 hardware noticeably slow by today's standards."
[18] Google Device Access — partner-only, read-not-write T5
"Google's developer program (Device Access) lets qualified partners read from / control Nest devices; does not let outside apps push custom content onto the Nest Hub Max display."
[19] The Skylight namespace-collision finding UNT
"The page at
support.skylight.global is for an unrelated AI lab tracking maritime vessels by satellite, not for Skylight Calendar."Source content at https://support.skylight.global/en_US/api-documentation — reading the page reveals "Skylight vessel detections" content unrelated to the calendar device. Two unrelated companies share the brand name.