Head-to-head · October 2026
Calculator Builder vs Drug Half-Life Calculator
Calculator Builder comes out ahead, winning 6 of 7 head-to-head checks against Drug Half-Life Calculator.
Calculator Builder
Introducing the Calculator Builder WordPress plugin – the ultimate WordPress plugin that allows you to create…
Drug Half-Life Calculator
This plugin allows you to add a widget to your sidebar or shortcode to a page or post that displays a simple…
| Metric | Calculator Builder | Drug Half-Life Calculator |
|---|---|---|
| Active installs | 1K+ | 10+ |
| Downloads (30 days) | 394 | 43 |
| Download trend | +9.7% | +72% |
| Rating | 4.7/5 | — |
| Reviews | 18 | 0 |
| Health score | 66/100 | 23/100 |
| Last updated | 2 months ago | 14 years ago |
| Tested up to | WP 7.1.3 | WP 3.5.2 |
| Support resolved | 0% | — |
| Requires PHP | 7.4+ | Any |
| First released | Jul 2021 | Aug 2012 |
Daily downloads, last 90 days
Calculator BuilderDrug Half-Life Calculat…
Choose Calculator Builder if…
You care most about active installs, downloads (30 days) and reviews.
- Tested with the latest WordPress (7.1)
Choose Drug Half-Life Calculator if…
You care most about download trend.
- Small user base (10+ active installs)
- Very few reviews so far
- No update in 13 years
- Only tested up to WordPress 3.5 (latest is 7.1)
Both compete in: calculator
FAQ
Calculator Builder vs Drug Half-Life Calculator: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 20, 2026
Which is better, Calculator Builder or Drug Half-Life Calculator?
Calculator Builder comes out ahead, winning 6 of 7 head-to-head checks against Drug Half-Life Calculator. Choose Calculator Builder if you care most about active installs, downloads (30 days) and reviews. Choose Drug Half-Life Calculator if you care most about download trend.
Is Calculator Builder more popular than Drug Half-Life Calculator?
Calculator Builder is the more popular of the two with 1K+ active installs, compared with 10+ for Drug Half-Life Calculator.
Can I use Calculator Builder and Drug Half-Life Calculator together?
Both plugins cover calculator, so most sites only need one. Running two plugins that do the same job can cause conflicts and slow your site down — pick the one that fits best and remove the other.
Are Calculator Builder and Drug Half-Life Calculator free?
Yes. Both are free to download from the official WordPress.org plugin directory. Either may also offer paid upgrades from its developer.
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