Comparison

Blackout vs Package Calc

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

Head to head
About

Blackout

Features
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Blackout is an offline emergency guide for your household, made for iPhone. When the power, signal or internet goes out, there is no time to search the web for advice. Blackout keeps the essentials on your phone: readable, fast and without any connection. FREE, FOR EVERYONE • Emergency guides for home, car, cabin, first aid and evacuation • Checklists for power outages, evacuation bag, water and food supplies, storms and leaving home • Ready-made crisis packs you install with one tap, including "Drought and water" • Weather alerts for your saved address, with notifications and advice on what to do (supported regions) • CPR metronome at 110 beats per minute and rapid first-aid triage • SOS light signal and loud siren • Emergency mode: extreme contrast, flat colors, saves battery, readable in the dark • Compass that works without a map, signal or internet • Emergency numbers for your country and a Family card to share: meeting point, numbers and a QR code • Face ID, Touch ID or passcode protection • Seasonal challenges with badges to collect BLACKOUT HOUSEHOLD: ONE-TIME PURCHASE, NO SUBSCRIPTION Try it free for 7 days. • SafeZone for the whole family (one pair of phones is free) • Expiry tracking for food and medicine with reminders (the 3 soonest items are free) • Self-sufficiency calculator without limits (free up to 2 people and 3 days) • Battery endurance: how many days your power banks keep phone and flashlight running • Encrypted backup (AES-256-GCM) and restore • Printable crisis plan as a PDF SAFEZONE: A NETWORK WITHOUT INTERNET SafeZone finds nearby iPhones with Blackout and connects them directly, with no router, SIM card or mobile data. You approve every device by hand. Then it passes on short messages and selected changes. Range is tens of meters: during an outage at home, but also at the cabin, on a campsite or at a festival. PRIVACY FIRST No account, no ads, no ad SDKs, no trackers. Your guides, lists and supplies stay on your device or between devices you trust. The app sends only anonymous daily counters (for example which screen was open) without a device identifier or personal content. Guides, checklists and tools work in airplane mode. IMPORTANT Blackout is an organizational aid. It does not replace emergency services, medical help, fire department or police. In danger to life, always call your local emergency number (911 in the USA, 112 in the EU). The SOS signal and siren are not a substitute for calling for help. Terms of Use (EULA): https://neologos.dev/en/pravni/podminky-pouzivani/blackout

About

Package Calc

Features
Read full description

ShipCalc: Professional Dimensional & Shipping Calculator Streamline your logistics, packing workflows, and shipping cost estimates with ShipCalc, the ultimate utility designed for e-commerce sellers, small business owners, warehouse operators, and frequent shippers. Stop guessing dimensional weights and overpaying for carrier surcharges—calculate, compare, and organize your shipments instantly right from your iPhone or iPad. Key Features & Capabilities 1. Advanced Dimensional & Billable Weight Calculations Multi-Unit Support: Easily input dimensions and weights in Imperial (inches, lbs, oz) or Metric (cm, kg, g) units with instant conversions. DIM Divisor Customization: Compare standard carrier formulas using customizable Dimensional Weight (DIM) divisors across major shipping providers. Billable Weight Determination: Automatically evaluate actual weight versus dimensional weight to instantly determine your exact billable weight and avoid unexpected carrier adjustment fees. Shipping Tier Categorization: Automatically categorize packages into appropriate shipping classes and tiers based on size and weight parameters. 2. Multi-Carrier Rate & Cost Comparison Instant Cost Estimates: Calculate estimated shipping costs tailored to your package's dimensions, volume, and destination tier. Carrier Comparison: Compare pricing structures and dimensional impacts across popular shipping carriers side-by-side. Cubic Volume Tracking: Automatically compute total cubic volume to optimize box sizes and packing efficiency. 3. History Tracking & Professional CSV Exports Saved Package History: Automatically store your past calculations with custom labels, dates, and detailed carrier breakdowns. Detailed History Views: Review billable weights, carriers, and estimated costs at a glance with clean list cells. CSV Data Export: Export your complete calculation history and shipping logs into clean CSV spreadsheets for easy record-keeping, accounting, or sharing via email and files. 4. Precision Design & Native iOS Performance Built for iOS: Crafted natively using high-performance Swift and UIKit for smooth, responsive interactions and lightning-fast calculations. Haptic Feedback: Experience satisfying, precise tactile feedback during typing, inputs, and calculation triggers. Clean, Modern Interface: Enjoy a distraction-free, professional layout designed for high-efficiency packing stations and on-the-go logistics management. Who is ShipCalc For? E-Commerce & Marketplace Sellers: Quickly verify box sizes and shipping costs before listing items or purchasing postage on eBay, Etsy, Shopify, and Amazon. Small Business Owners & Boutique Shippers: Accurately estimate shipping overhead to price products correctly and protect your profit margins. Warehouse & Fulfillment Staff: Double-check dimensional weights and billable thresholds on the fly to prevent costly carrier chargebacks. Frequent Shippers: Keep a reliable historical log of all your packaged shipments and export data effortlessly. Take control of your shipping logistics today with ShipCalc—where precision meets productivity. Download now and ship smarter!

Screenshots

Blackout4 screens
Package Calc4 screens

Verdict

The call

The clearest difference is price: Blackout at Free against Package Calc's $0.99. Package Calc's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement 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

Blackout is free to download; Package Calc costs $0.99 up front. Blackout sells 1 one-off in-app purchase. Package Calc asks for nothing beyond the download.

Scorecard2 real differences · 4 level
Blackout versus Package Calc: the parameters behind the verdict, then further details
ParameterBlackoutPackage Calc
PriceFree — better$0.99
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better18.6
Further details — not scored
Size23 MB1 MB
Age rating4+4+
DeveloperVOJTECH LANDARaj Sheth

In-app purchases

1 purchases

Blackout

One-time1
  • Blackout Household$9.99
None

Package Calc

No in-app purchases

Questions

Is Blackout free?
Blackout is free to download, with in-app purchases available.
Is Package Calc free?
Package Calc costs $0.99, with no in-app purchases.
Do Blackout or Package Calc have ads?
Neither Blackout nor Package Calc shows ads.

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