SlowLightMeter vs Orriva

As a film photographer, I wanted an accurate yet simple reflective and incident light meter. After trying several, I decided to build my own. This light meter continuously measures light, so it requires minimal interaction during a shoot. To avoid accidentally changing film ISO, I added an ISO lock. And since I shoot often with my Hasselblad, I made EV values a core feature of the app.

Too many photos, too little time? Orriva finds the keepers from a burst, plans the light before you shoot, and develops your RAWs — completely offline, right on your device. THE KEEPER FINDER — FREE Import a burst of similar shots and Orriva suggests the sharpest one in each series. Double-tap to zoom to 100% and check the eyes yourself — the app only suggests, you decide. It never deletes anything on its own. PLAN THE LIGHT — FREE Blue hour and golden hour countdown, sunrise and sunset with compass bearings so you know where to stand, moon phase and local weather. The Horizont home-screen widget keeps it one glance away. CALCULATORS — FREE ND filter exposure times, hyperfocal distance, and the 500/NPF rule for night skies. PHOTO EDITOR (Pro) Looks with an adjustable strength slider, crop to popular ratios (1:1, 3:2, 4:5, 16:9), straighten the horizon, one-tap Auto, plus brightness, contrast, saturation and sharpening. Watermark, EXIF viewer, before/after compare and on-device face tools included. RAW DEVELOPING (Pro — first 5 free) Open RAW files from Sony, Canon, Nikon and more (ARW, CR3, NEF, DNG). Dial in exposure, white balance, noise reduction and sharpening by hand, guided by a live histogram. Your first five developments are free, so you can check your files come out right before you pay. MANUAL CAMERA & BATCH RESIZE (Pro) Full control over shutter speed, ISO and focus. Resize and watermark a whole shoot in one go. DESIGNED FOR IPHONE AND IPAD On iPad the editor, the keeper finder and RAW developing use the whole screen — library on the left, photo in the middle, controls on the right. PRIVATE BY DESIGN Orriva works fully offline. Your photos never leave your device — no accounts, no ads, no tracking, nothing uploaded. Pro is a one-time purchase, not a subscription.