# Natural Scientific Calculator — user reviews > 142 indexed App Store user reviews of Natural Scientific Calculator by Stultus Studios Pty Ltd, rated 4.60/5 from 95 ratings. - Source: https://appshunter.io/ios/app/natural-scientific-calculator/id1221737584/reviews - App overview in markdown: https://appshunter.io/ios/app/natural-scientific-calculator/id1221737584.md - Rating breakdown: 5★ 75 · 4★ 13 · 3★ 2 · 2★ 1 · 1★ 4 ## What do users think of Natural Scientific Calculator? Overall sentiment: mixed **Pros** - 👍 Intuitive and user-friendly interface - 📐 Natural display with equation editing - 🚀 Fast and efficient calculations - 🎓 Excellent for students and engineers - ✨ Clean, simple design compared to competitors - 📱 Effective replacement for physical calculators - 🔢 Comprehensive scientific functions - ⌨️ Cursor navigation for equation editing **Cons** - 🐛 Frequent crashes and freezing - ❌ Incorrect trigonometric calculations - 📵 Excessive pop-up notifications requesting reviews - 💰 Expensive premium version - 📺 Intrusive and loud advertisements - 🔋 Battery drain and performance issues - 📱 Poor iPhone X+ screen optimization - ⌨️ No physical keyboard support - 🚫 Abandoned project with no recent updates - 📋 No copy/paste functionality **Commonly reported bugs** - Math error on all calculations (widespread issue from late 2022-2023) - App freezes during startup or tutorial - Crashes during complex calculations - Incorrect inverse trigonometric function results - Incorrect sine, cosine, tangent calculations - Scientific notation exponent calculation errors - App crashes when switching between apps - UI elements stretched or unreadable in split-screen mode - Tutorial screen stuck with no way to progress - Slow performance and battery drain - Crashes on iOS 12 and newer versions - Buttons unresponsive or non-functional **Most requested features** - Dark mode or dark theme option - Physical keyboard support - Copy and paste functionality - History or ticker of previous calculations - Double and triple zero buttons (00, 000) - Thousand separator (comma) support - Equation solver feature - Memory function for reusing previous results - Antilog function - S→D (Sexagesimal to Decimal) button - Scientific notation handling improvements - iPad split-screen optimization - Skip tutorial option - Better cursor control for equation modification - Conversions and constants library ## Newest reviews (10 of 142) ### 4/5 — Stop asking me for a review *2026-06-14, version 1.2.4* Perfect apart from the constant pop up asking me if I like it. I have tolerated the pop up for more than 5 years, maybe this review will make it stop? I even paid for the pro version. Let me alone to calcite ### 4/5 — Great calculator *2026-06-02, version 1.2.4* Best calculator out there and so glad it got updated for newer phones, loses a star because every single time I open it (or even during using it) I’m getting pop ups to rate it ### 2/5 — not pasting option no keyboard support *2025-04-07, version 1.2.2* The app is great but i can’t copy a long number from some where to this application , the app is great but it need a massive work around on ux ui design and copy past ability no physical key board support plz do develope it ### 5/5 — Great Reliable Calculator *2023-10-11, version 1.2.2* I am a stem student. I often forget my SCI calculator at home. This program saved me more than once, good straightforward design. Looks nice, works great, mimics the real calculator! ### 5/5 — Excellent Free Scientific Calculator *2023-08-25, version 1.2.2* Downloaded several Scientific Calculator apps and this is by far the best. Thanks 🙏🏻 ### 3/5 — Good but nags *2023-06-01, version 1.2.2* There’s nothing wrong with the calculator itself, I use it daily. The problem is that a pop up appears every now and then when you switch to the app. It happens far too often, doesn’t stop even if you send feedback and breaks my train of thought/flow every time. It’s enough of a problem that I’m looking for an alternative calculator now, which is a shame because that’s the only problem with this one. ### 5/5 — Waiting for natural scientific calculator 2 *2023-05-01, version 1.2.2* Don't abandon this project again. I have searched for an application to replace this one for long, but on vain. eagerly waiting for the next version, and make it paid but not subscription model. Please publish it asap ### 3/5 — 😁 *2023-04-17, version 1.2.2* This app is so easy to use and helps you with maths at the same time. ### 5/5 — 69JANEAVE was a great night and yay I got a *2023-02-16, version 1.1.6* If I could do ### 5/5 — Review *2023-01-02, version 1.1.6* This calculator is very good. Well done to the people behind this! ## Most critical reviews (10 lowest-rated) ### 1/5 — Gives incorrect answers *2023-08-24, version 1.2.2* Would’ve thought in this day and age it would he easy enough to get a scientific calculator on a smartphone but this one can’t handle trigonometry. Inverse cosine calculations giving weird and obviously wrong answers. ### 1/5 — can’t be used *2023-02-11, version 1.1.6* the calculator can’t even work a single equation on my ipad. ### 1/5 — MATH ERROR *2023-02-07, version 1.1.6* Used to be the best calculator ever but recently just sais math error to everything please please please fix ### 1/5 — No longer working *2023-02-07, version 1.1.6* Used to be the best calculator app available, now is broken and any input just returns math error ### 1/5 — No longer works *2023-02-01* Was a really good calculator until around fall 2022. Now February 2023, and still broken, so the devs aren't maintaining it anymore. **Developer response:** Thanks for the feedback. We've managed to fix this, and the calculator is working as before now. Sorry for the delay! We are maintaining this app and planning to launch a completely revamped version in the coupling months, called NSC 2.0. ### 1/5 — Math error always *2023-01-31, version 1.1.6* This was the best calculator on the app store. Recently had issues that no matter what I type, it would result in a math error Fix it and back to 5 stars ### 1/5 — Math Error *2023-01-28, version 1.1.6* I’ve used this calculator app for years never had an issue with it up until recently all it says is “math error” when you try to calculate anything. ### 1/5 — Math error *2023-01-25, version 1.1.6* Worked fine but would constantly Harass me to leave a review or feedback. Now it won’t even work and just says math error no matter what. Paid for the pro version too. ### 1/5 — Math error *2023-01-13, version 1.1.6* I had this app on my old phone for almost 2 years. It worked brilliant. I installed it the other day on my new one and no matter what i type, it just says math error. I havent done anything different, the settings are all the same. The one on the old phone still works but i would like to have it on the news one as well. ### 1/5 — Dont work any more *2023-01-09, version 1.1.6* I keep getting the same answer of “maths error” for every question ## Most praised reviews (10 highest-rated) ### 5/5 — :) *2026-05-22* Is amazing for maths people ### 5/5 — Most usable with natural display *2026-02-08* This isn't the only calculator app on the market with natural display, but it is far and away the most usable. It perfectly combines the simplicity and ease of use of the built-in calculator with more advanced operations available on other scientific calculator apps. The UI is simple and clean, whereas others feel a lot more like handheld scientific calculators emulated on the iPhone, with really busy UIs full of myriad tiny buttons. ### 5/5 — Excellent *2026-01-12, version 1.2.2* Really useful. ### 5/5 — Very good calculator app *2025-04-17, version 1.2.2* Very good and easy to use ### 5/5 — Amazing!!! just feel like writing equation on paper *2025-02-18, version 1.2.2* This is such an awesome app!now I don’t have to worry about inputting errors — feels like doing math on paper — except it is automatic! Feel so convenient. It is natural indeed. ### 5/5 — Best calculator app for iPhone *2024-09-19, version 1.2.2* This is by far the best calculator app I have found for IPhone. The ability to navigate your cursor to anywhere in a complex equation quickly and easily is so useful! ### 5/5 — Review *2024-05-02, version 1.2.2* Amaziiiiiiing app for classes ### 5/5 — Brilliant app *2024-04-23, version 1.2.2* I’ve been using this app along side my uni course (DipHE in Engineering) and it’s very helpful for home studying. The only thing the app lacks is a function to control where the flashing line goes if you want to change the equation. If that makes sense? Apart from that it does everything I need it to. ### 5/5 — So good, it really helps *2023-12-07, version 1.2.2* its very user friendly, no hassle, easy to use. i hope they make some dark themes or dark mode option in settings for users like me whose have sensitive eye. but over all experience is good 🔥 ### 5/5 — Very good *2023-11-29, version 1.2.2* Best one I have found to use! --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*