Screenshots
Description
Been playing Plus42 for a couple months now. It’s basically an advanced scientific calculator app with a ton of features. Pretty solid if you’re into this kind of thing.
Here’s what you can do – there’s the standard calculator functions, but it also does stuff like time value of money, unit conversions, and even 2D plotting. It’s got a bigger display than the original HP-42S it’s based on, which is nice. Took me a while to figure out all the features but they’re pretty useful once you get the hang of it.
Look, if you’re into productivity apps and need a really powerful calculator, you’ll probably like Plus42. It’s not perfect – the UI can be a bit clunky at times – but overall it does the job. Worth checking out for sure.
Editor Opinion
So here's my take on Plus42. I've tested a bunch of calculator apps and this one's definitely one of the more feature-packed ones I've seen. The amount of scientific functions and customization is pretty impressive. It's not the most user-friendly thing ever, but if you put in the time to learn it, it's really capable. Compared to the free HP-42S emulator it's based on, the added features like unit conversions and 2D plotting make it worth the small buy price in my opinion.
Pros & Cons
Pros
- Tons of advanced scientific functions and customization
- Bigger display than the original HP-42S
- Free to download, only pay for premium features
- Runs smooth even on older phones
- Great for serious math/science work
Cons
- Can be overwhelming at first with all the features
- UI is a bit dated and clunky
- Upgrades/IAPs are a bit pricey
- Not the most beginner-friendly calculator app
Specifications
| Updated | 10.10.2025 |
| Category | Tools |
| Age Rating | Everyone |
| Developer | Thomas Okken |
| Android | Android 4.4++ |
| Package Name |
com.thomasokken.plus42 |
Ratings
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