zerogram: Pack Weight Tracker

Know exactly what your pack weighs, and make it lighter.

zerogram is the pack weight tracker for hikers and ultralight backpackers. Weigh your gear

to the gram, build packs for every trip, and get a live Ultralight Score (0 to 100) that

shows where you stand, from traditional to true ultralight.

WEIGH AND BUILD

- Gear locker: log every item with its exact weight

- Build packs per trip with base weight, worn weight and consumables

- Import your LighterPack or CSV list for free and see your score instantly

- Quick-start kits matched to you by a short quiz

UNDERSTAND AND IMPROVE

- Ultralight Score with clear bands

- Your biggest gram-saving tip, free

- Pro analysis: big three breakdown, category targets, heaviest items, pack comparison

- Route plan: days, season and automatic consumables (Pro)

STAY ON TRAIL

- Trip journal with lifetime stats

- Weekly streak and 12 achievements

- Share your pack as a clean summary card

- Optional reminders for your streak and after trips

PRIVATE BY DESIGN

No account. Your data stays on your device.

zerogram Pro unlocks unlimited packs and gear, full analysis and advice, comparison, route

plan and CSV export. Monthly, yearly (7-day free trial) or one-time lifetime.