Density vs JustPercent
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Density
This app calculates radiographic density variations for industrial radiographers and inspectors. It is designed to assist professionals working with ASME Section V standards in their density calculations.
- Radiographic density calculation
- ASME Section V compliance
- Industrial radiographer tool
- Density variation calculations
- Inspector utility
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Radiographic density calculator for use with ASME Section V. Useful for industrial radiographers and inspectors making density variation calculations.
JustPercent
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"Confused by percentages? Stop struggling with math. Get your answers in just 3 seconds with JustPercent!" We made this app for everyone who finds regular calculators too complicated. No math formulas, no stress. Just 3 simple tools you’ll use every day. ■ 3 Simple Features for Everyone 1. "How much is the discount?" (Percentage) • Shopping for clothes? Find out how much 15% off of a $30.00 item is instantly. • Just enter the total and the percent. Done in 3 seconds! 2. "Add or Subtract?" (Increase/Decrease) • Getting a 5% raise on your salary? • Want to add a 10% tip to your $50.00 dinner bill? • Just use the Plus(+) and Minus(-) buttons for a quick answer. 3. "What's the difference?" (Change Rate) • Lost weight from 70kg to 65kg? See what percentage you lost. • Stocks went from $5,000 to $6,000? Check your profit rate automatically. • Just enter the Old and New values to see the result. ■ Why JustPercent? • Super Simple: We use easy words like 'Total' and 'Old/New' instead of hard math terms. • Instant Results: No need to hit an 'Equal' button. The result appears as you type. • Clean Design: Big numbers and clear layouts. Perfect for all ages. • Truly Global: Supports English, Korean, Japanese, Chinese, Spanish, French, Hindi, and more! From students and shoppers to workers and seniors! Stop worrying about numbers. Let JustPercent do the work and save your time.
Screenshots
Verdict
The clearest difference is in-app purchases: Density at none against JustPercent's 1. Density also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.0). JustPercent's advantage is update cadence (every 3 months vs every 75 months). On price 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
Both are free to download. JustPercent sells 1 one-off in-app purchase. Density asks for nothing beyond the download.
Density ships an update every 75 months, JustPercent every 3 months. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.
| Parameter | Density | JustPercent |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (8 ratings) — better | — |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 75 months | Every 3 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 0 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Lance Henderson | DONGSOO LEE |
In-app purchases
Density
No in-app purchases
JustPercent
- Premium Upgrade$1.99
Questions
Is Density free?
Is JustPercent free?
Do Density or JustPercent have ads?
Which is updated more often, Density or JustPercent?
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