Comparison

Disaster Prep & Stockpile vs PrepNotify

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Disaster Prep & Stockpile

Features
Read full description

Wondering what disaster supplies to keep and how much is enough? Sonamet auto-generates your personalized emergency stockpile checklist in 10 seconds based on your family size. Track expiration dates, inventory, and storage spots all in one place—no account registration needed, ready to use immediately. Sonamet is a disaster preparedness and pantry inventory tracker for everyday life. Manage home stockpiles and emergency grab-and-go bags (bug-out bags) separately to clearly see what you need, what is ready, and what is expiring. Core features work offline, keeping your checklists and emergency guides accessible even during network outages. 【Recommended For】 - Unsure what supplies or how much water/food to store - Frequently let emergency foods and drinks expire - Want to manage home stockpiles and bug-out bags separately - Quickly locate designated shelters near home or workplace - Forget where emergency items are stored at home - Worried if your emergency backpack is too heavy to carry - Practice rolling stock replenishment for groceries and essentials 【Key Features of Sonamet】 ▼ 10-Second Automated Stockpile Calculator Enter family members (adults, kids, infants, seniors) and prep days to auto-calculate recommended water (3L/person/day), meals, and sanitation supplies. Start prepping right away without researching guidelines from scratch. ▼ Disaster Shelter Map Quickly find designated emergency evacuation shelters on an interactive map using official geospatial open data. Search shelters near your current location or look up specific addresses and facility names. Save important places like home or office as "My Locations" for 1-tap shelter lookup. Works with offline cache; location data stays on-device for privacy. ▼ Dual Tracking: Home Stockpiles & Grab-and-Go Bags Separately manage home survival stockpiles and emergency evacuation bags. Interactive checklists show packed items and shortages at a glance. ▼ Expiry Date & Low-Stock Alerts Get notified before food, water, medicine, or batteries expire. Alerts also warn you when stock drops below minimum thresholds so you never run out. ▼ Fast Barcode Scanning & Item Lookup Scan barcodes on groceries and household goods to register items in seconds. Free tier includes 50 initial scans plus 5 daily scans; unlimited with Pro. ▼ Auto-Add Expired Items to Shopping List Expired items automatically move to your shopping list for seamless rolling stock replenishment. Reorder missing supplies online with one tap. ▼ Photo Logs & Storage Locations Attach photos and exact storage spots (e.g., "Kitchen Cabinet") to items. Know what you have and where to find it. ▼ Bag Weight Calculator Automatically calculates total weight of your grab-and-go bag with visual gauges to ensure safe carrying capacity. ▼ Offline Emergency Guides & Manuals Download official emergency manuals and view custom PDF guides inside the app without an internet connection. ▼ No Sign-up & Full Offline Support Start prepping immediately without creating an account. Core checklists, inventory, and cached map data work offline. 【Other Useful Features】 - Official open-data shelter map & facility search - "My Locations" bookmarking for home and workplace - Track quantity, expiry date, weight, photo, and notes - Multi-language: English, Japanese, Chinese, Spanish, Indonesian, Filipino 【Sonamet Pro】 - Unlimited stockpile sets (Free: up to 2 sets) - Unlimited barcode scanning - Automatic iCloud sync across iOS devices - Export checklists to PDF - Dedicated dog and cat pet supply checklists - Split bag management (individual bag per family member) - Custom categories, inventory analytics & ad-free experience Disaster prep is not a one-time task. Stay prepared, prevent waste, and protect your loved ones with Sonamet. 【Terms of Use】 https://sonamet.web.app/terms_en.html 【Privacy Policy】 https://sonamet.web.app/privacy_en.html

About

PrepNotify

Features
Read full description

Buying emergency supplies is just the first step. Staying prepared means knowing what you have, what’s missing, and when to restock. When does your drinking water expire? How much emergency food is left? How long have you had those spare batteries? Does everyone in your family have what they need? PrepNotify is an emergency supply tracker built for you. Organize your supplies, track quantities and expiration dates, and get timely reminders so your supplies are ready when you need them. ## Know What You Have Organize food, water, emergency supplies, and essentials for babies, older adults, and pets by category. Record quantities, photos, expiration dates, and more. Search and filter to check your stock faster. ## Know What to Use First Based on quantities and expiration dates, PrepNotify marks items as Expiring Soon, Out of stock, Good, or Expired. See what to use or replace first. With notifications enabled, the app schedules one-time expiration reminders when a valid reminder time is available. Items with no stock don’t receive reminders. ## Check Without Opening the App Use a Home Screen widget to check items that need attention and their expiration status at a glance. ## Prepare Your Way Everyone’s needs are different. Build a supply list that fits you or your household, from everyday essentials and emergency kits to items for babies, older adults, and pets. ## Your Supplies, Across Devices Your item data and photos stay on your device and sync through your private iCloud database across devices signed in to the same Apple Account, so you don’t have to start over. ## Your Data Stays Yours No ads. No cross-app tracking. We don’t store your item data or photos on our own servers. They stay on your devices and in your private iCloud database. PrepNotify — Don’t just think you’re prepared. Know what you have. Privacy Policy: https://prepnotify.service-app.workers.dev/privacy?lang=en Terms of Use: https://prepnotify.service-app.workers.dev/terms?lang=en Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Disaster Prep & Stockpile4 screens
PrepNotify4 screens

Verdict

The call

The clearest difference is ads: PrepNotify at none against Disaster Prep & Stockpile's shown. Disaster Prep & Stockpile's advantage is iOS requirement (16.4 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Disaster Prep & Stockpile sells 2 in-app purchases, starting at $1.99 per month and PrepNotify sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Disaster Prep & Stockpile ships an update every 9 days, PrepNotify every 2 weeks. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 4 level
Disaster Prep & Stockpile versus PrepNotify: the parameters behind the verdict, then further details
ParameterDisaster Prep & StockpilePrepNotify
PriceFreeFree
Update frequencyEvery 9 days — betterEvery 2 weeks
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better18.0
Further details — not scored
Size75 MB24 MB
Age rating4+17+
DeveloperJimpei NegishiPei Yang Jhang

In-app purchases

2 purchases

Disaster Prep & Stockpile

Subscriptions2
  • 月額プラン7 Days trial$1.991 Month
  • 年額プラン7 Days trial$14.991 Year
3 purchases

PrepNotify

Subscriptions2
  • One bubble tea a month$1.991 Month
  • A year of bubble tea$14.991 Year
One-time1
  • Buy me a bubble tea$1.99

Questions

Is Disaster Prep & Stockpile free?
Disaster Prep & Stockpile is free to download, with in-app purchases available.
Is PrepNotify free?
PrepNotify is free to download, with in-app purchases available.
Do Disaster Prep & Stockpile or PrepNotify have ads?
Disaster Prep & Stockpile shows ads; PrepNotify does not.
Which is updated more often, Disaster Prep & Stockpile or PrepNotify?
Disaster Prep & Stockpile ships an update every 9 days, and PrepNotify every 2 weeks. Most recently, Disaster Prep & Stockpile was updated on November 5, 2026 and PrepNotify on November 6, 2026.

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