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HikariYomi (光読み)

Offline AR optical ephemeris & field planner for creators

Details

External ID
1263166
Source
PH
Company
—
Product
HikariYomi (光読み)
Website domain
producthunt.com
Launched
Sept. 29, 2026
Cohort
—
Upvotes
2
Upvotes percentile
0.7405388069275176
Tags
iOS, Photography, Augmented Reality
Fetched at
Sept. 30, 2026, 1:01 a.m.
Updated at
Sept. 30, 2026, 1:01 a.m.

Description

HikariYomi (光読み) is a native iOS AR optical ephemeris & field planner for photographers. Unlike scouting tools that push subscriptions and fail off-grid, HikariYomi runs 100% offline via on-device astronomical algorithms. Highlights: • Live AR celestial arcs & golden hour countdowns • Prime lens FOV simulator (24mm–135mm) with 3:2 frames • Map shadow projections & 16-day sunset scores • Milky Way core tracking + NPF shutter limits • Free core tools, one-time $7.99 Pro buyout

Enrichment

Theme
space and geospatial visualization tools
Vertical
Media & entertainment
Function
Dev tools
Audience
Prosumer
AI stance
Not AI
Project type
Commercial product
Normalized one-liner
offline ar ephemeris and field planner for creators
Manually corrected
False

Could you build this?

Partial While standard ARKit apps can be scaffolded via AI, implementing offline high-precision astronomical ephemeris models, lens FOV projections, and sensor calibration requires deep domain math.

What it would actually take: The app requires Swift with ARKit, CoreMotion, and Metal. The challenging part is integrating astronomical calculation algorithms (e.g., Jean Meeus astronomical algorithms or VSOP87) entirely offline, compensating for atmospheric refraction, device gyro drift, and accurately rendering celestial arcs in true optical field-of-view overlays.

Competitors

Other products that read as similar to this one — 5 launches clear the similarity bar.

Attention rank: #1 of 6 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 18 days after the earliest competitor.

Other launches for this product

Same idea, different domain

Nobody's really built a dev tools tool for Sales yet.