Calculator‰ Customer ServiceTim O's Studios, LLC

Calculator‰ Customer Service

  1. Calculator‰ Customer Service
  2. Calculator‰ App Comments & Reviews (2026)
  3. Calculator‰ iPhone Images
  4. Calculator‰ iPad Images

This calculator has a perfect design that maximizes the size of the buttons and display, with a great layout for fast and easy calculations.

Retina Display.

Download now and see how truly great this basic calculator is.

Calculator‰ App Comments & Reviews

Calculator‰ Positive Reviews

Good app with one negativeBeing over 50, I wanted a calculator whose buttons and display would be large and easy to read without reading glasses. This app fits the bill. My only complaint is, the division and multiplication symbols are on the left, which is different from most other calculators, which slows me down and/or causes keying errors, since I often have to make multiple calculations quickly. It would be nice if both calculator apps and "real" calculators had standardized key positioning like alpha keyboards do!.Version: 4.0

Finally, a Great CalculatorI bought a couple other calculators -- the screen were crowded with functions I just don't ever need and, to make things worse, the advertisements were constant and sometimes wouldn't allow the calculator to function until the "ad time" elapsed. This one is pure-T perfect. Sure, if you're a scientist of an engineer, you might need one of the other ones, but I'm not and having unused functions on the screen is a waste of space. This one is great across the board..Version: 4.0

I compared the TOP 10 calcs - this one WINS!!!I compared the TOP 10 calculators, and this is THE VERY BEST CALCULATOR APP... IF you're looking for the following qualities: 1) BASIC, SIMPLE 0-9 +-x ONLY...without all of the "Bells & Whistles" (I think the geeks call those "Scientific Calculators"?) Simple! Simple! Simple! 2) THIS CALCULATOR OPENS INSTANTLY! In my opinion my calculator should be there, READY to do a quick calculation, so I can continue my work seamlessly without delays. Waiting for a BASIC HELPER-APP to open, while deep in my work, TOTALLY breaks my train of thought. (MANY of the highly-downloaded calcs that I compared took 15-THIRTY SECONDS just to OPEN! That's like a LIFETIME when you are on a roll, working. Completely unacceptable. 3) !!!!!!!!NO ADVERTISEMENTS!!!!!!!! (However, even if there WERE ads, and I was offered the option to pay $.99 to remove them, I would TOTALLY pay the $.99. It's THAT good of a SIMPLE CALCULATOR! 4) VERY EASY ON THE EYES..Version: 4.0

Great basic calculator...1 small 'but'This is a great no frills calculator and is big enough for 60 plus eyes. Deleted the one that came with iPad Air. My one small but is that bright red background of the "C". It is just like the red notifications on FB or Messenger or Mail!! Drives me crazy. Every time I would open iPad, I'd for a split second, think I had notifications. Had to move it off home page so I now have to swipe to use it. Change it to some other color or give us a choice..Version: 4.0

Simple and competentHas everything I need. Percentages, square roots, basic math. I had one with trig functions, which was overkill. Trig was the only class I ever failed in high school, so cosines and tangents are not useful for me. And so far it hasn't shown any ads. (I don't mind an ad placed discreetly, but the first two iPad calculators I tried had banner ads at the bottom with lights moving around the borders – very very distracting. I also wouldn't mind paying for simple calculator app like this to keep it ad free.Version: 4.0

Works great for me!I have had no problems with the Ap,even though at one time Apple wanted it removed and replaced because of potential security issues. I looked for other Ap's, but none of them were as satisfactory as this is. The others had a ton of advertising I had to go through, so they were uninstalled. I was never a Apple Type Computer user, but I am changing because so far, their security is the best I have worked with so far!.Version: 4.0

Calculator ReviewI have used many online calculator App’s. This one is; by far my favorite. It just seems to be the most user friendly and easy to use. I also LOVE the larger button keys! The older that I get it seems I desire and.... yes NEED this to be a true and useable option. It seems like it is a real NEED FOR ME at this point. Show... just wanted to give a give a big & quick shout out to those responsible for make this calculator option a true and viable option! —-Ron Madsen—-.Version: 4.2

Love it.. It's a MUST HAVE!!!I been using this calculator app for several years now. It's stays on my device even after resetting or reformatting my device it's a must have for my device. I tried others in the beginning of my search, this was the winner for me. Simple uncomplicated and no hassles or stress. It gives me all that I need in a qualified but simple calculator for my needs. It also don't seem to be "taxing" on my device that I noticed. Great job developers, thanks!!!.Version: 4.1

Simple and efficientI've tried the other two top calculator apps and this one is by far my favorite. It doesn't lag while computing like one of them, and you don't have to toggle screens for basic button applications. Aside from that it utilizes the watches haptic feature which helps to feel when you've selected a number. The plus, minus, etc. is highlighted in blue to let you know what you've selected as well..Version: 4.0

Ot-travelerLove this calculator! Use it mostly in landscape mode. Full screen, easy to see and use, and ads are present, but not obnoxious, being seen across the bottom of the screen. Highly recommend for basic tasks/day to day use. Not sure why only three stars showed up, as definitely a five star app! No changes in the past two years per app developer website, but doesn't need any! Thank you!.Version: 4.0

Had to have THIS oneI have an iPad from the Flinstones era. When I finally got a new one, I had to have this calculator app since this is what I had in the old iPad. I love how it’s simple, none of that scientific stuff that causes my brain to want to jump out of skull. Nice little ads on the bottom that don’t interfere with anything. It’s appears crisp and large and my old eyes can actually see it without reading glasses. Love this app!.Version: 4.2

Get The Calculator insteadMany of these comments are people saying they are happy to just have the basic functions, which I understand. However, The Calculator is better. You can set it to only have the basic functions. You can also choose to display the scientific calculator functions or even a currency translator! Not to mention there are also many themes you can pick and when your device is sideways you can also see your calculation history. Basically, get The Calculator..Version: 4.0

Always Pleased With The EaseI like this app because it’s by far the easiest calculator app I’ve had and used. It’s just simple. All I really need an app like this to do is add subtract times and divide. This does it and I don’t have to deal with all the extras. I’m giving this review right now because I just needed to do some adding and bam there’s my answer. I’ve used this several times now and I’m always pleased with the ease..Version: 4.1

Simple, great. Works on iPad too..OK, the Apple Gestapo decides we don't need a calculator and leaves it out of included apps. So now we must look for a simple replacement for light, everyday use. Thanks a lot, Big Brother! Luckily, after passing on the for-pay & ad-annoying calculator apps, I found this one. Simple, easy, no ads or in-app purchases or pop-ups. Fills the void that Big Brother created. A big "Thanks!" to the developer..Version: 4.0

Great calculatorThis is almost perfect for the Apple Watch. My only gripe is that the effect when pressing a number button is hard to notice, since the keys have to be small to fit on the small watch screen. Would give 5 stars if the number button press effect was more prominent, clearly identifying which number is pressed. This would clear up mistakes and let me slide over to the right number, rather than clearing and starting over..Version: 4.0

What changed?I have always loved the layout, simplicity and look of this app. My number 1 recommendation to friends until today. There is nothing I hate more than ADs! I know there never used to be ads in the version I had purchased but suddenly not only are they there but they get in the way if you click too near a bottom button edge. What happened?.Version: 4.1

Great Calculator! Excellent!Great Calculator! It performs every operation we've ever requested of it. The adjustable screen option is a plus! The display's size option is awesome! We love it! We recently discovered certain other 'goodies' in it, such as the very discrete additional screen field of more options of calculations when in landscape reading mode. All of the above made us easily rate the application as simply: Excellent!.Version: 4.0

Calculate’s to perfectionI had Apple’s calculator application and for a month it double digit adding. I could of in the past clicked on something that changed it but I tried to figure out by touching all over the open app and could not locate a setting to change to normal u.s. calculations. This App I installed today and it works like a charm. I love it because it is multi calculator that I can use for Math apps too..Version: 4.0

Handy and Easy to useThis app is my favorite when I need help with any calculation while away from home. The ergonomic arrangement of numbers, functions, and clear delineation, made this instrument easy to use in a matter of minutes. I felt comfortable and confident using this tool. And unlike the operator, this little powerhouse has never made a mistake..Version: 4.24

Love this AppI had been using another app for years amd then they started popping up ads when I would try amd use the calculator and in the middle of my using the calculator. It got to be very annoying, so I demoted it amd found this one, which is even nicer in size than the other I was using and easier to use. Thank you!.Version: 4.2

Simple is Better!I had downloaded another calculator but found it much too advanced for my needs. All I need to do is add, subtract, multiply, and occasionally divide. This calculator is very easy to use and I really like the LARGE numbers - I have the “fat fingers” problem that comes with age and I have no trouble pressing the number key I aimed for! Thank you..Version: 4.24

Make the ads stopLove this calculator and I’m fine with the ad at the bottom banner, but some time back, the ads have started popping up and interrupting my work. So so inconvenient. How do I make those full screen ads stop? If they can’t be stopped, I’ll have to uninstall and find an alternative..Version: 5.1

Simple, easy to use calculatorI love this basic calculator. Especially the ease of calculating percentages. Need a quick calcualtion for a tip... Just enter the total hit the + enter the 15 or 20 then "%" and it gives you the tip amount, hit "=" and you get the total. All you have to do is enter numbers on yout receipt. Accurate- easy-love it! Do the same when subtracting a percentage for discounts..Version: 4.0

Old SchoolI love this because it functions like a simple calculator, for example, featuring the sum after each addition or subtraction. Unlike the way iPhone’s calculator, after their latest update, where it just continues the equation out without totaling, making it take more steps to balance my checkbook..Version: 5.1

Hard to find a simple calculator!After searching for just a plain old calculator simple and basic, I found this one. It's a little more classy than I was is looking for. However it turns out it's very easy to use, no algebra or crazy number calculations. Just your every day type of needs. And a little extra. But not much. Perfect for me!.Version: 4.0

AnnoyingI'm in a hurry to use this app and right now you block me from using it until I write a review. Well defeated fecal matter. Here is your review. The app is great , but the people making it are more interested in their needs instead of the needs of their customer. Get a better business plan..Version: 5.1

Elegantly designed appIf the reader looks up “elegant” in her or his dictionary, the reader will usually find the primary definition to be “stylish” or “sophisticated.” However, it is the secondary, scientific definition to which this review refers, i.e., “pleasingly ingenuous and simple.” Tim O’s design is exactly as Albert Einstein recommended, to wit, “Everything should be as simple as possible... but not too simple.”.Version: 5.1

Absolutely love it!Thank you for this app! This is perfect for anyone (including the visually impaired) to use with ease. My iPhone came with a pre-installed calculator app. I was surprised that my iPad didn’t come with one. I found this app and enjoyed using this every since I installed it on my iPad. I plan to keep and use this wonderful app for years to come. Awesome!.Version: 4.1

Great simple calculatorApple changed its calculator to accommodate scholars and engineers. Making a simple grocery price calculation became impossible. I don’t know why Apple didn’t give us a choice but I had to delete its calculator and go with this new one. I love it, it is simple and I recommend it to anyone who is not working to build a rocket.Version: 5.1

Terrific!Calculators like this one are hard to find! This calc has the functions I need with big bold keys. The setup is attractive and easy to use. I've tried lots of calculators before but I've stuck by this one. I wish I could change the colors around but that's hardly important. If you're in the market for a straightforward calculator, try this one!.Version: 4.0

No substitute for dumb....This is a fine app. I really don't understand how there would be any misunderstanding of 21 divided by 7 not equaling 3. If the numbers are put in correct, the desired answer comes out. That is USER error and not the fault of the app, or its programmer. That being said, this app is what I was looking for. No ads. Big numbers (old eyes), and a percent key (landscape orientation). Good job..Version: 4.0

Great basic calculator needs one tweak.Great basic calculator. Stable operation. As other reviewers have stated, a basic calculator not cluttered with extra functions is sometimes the best tool. Get rid of the ads, which in an app are ALWAYS annoying and insulting. Charge a sensible purchase price (i.e., license fee) and this app is definitely five star. Maybe add some fun skins that could be extra cost options that would generate extra revenue?.Version: 4.0

Please don't change a thing!I work with 5th and 6th grade autistic students who are highly distractible. Your calculator is PERFECT for our students to use! There are no annoying or inappropriate ads that pop up as they are struggling to learn and stay on task! BRAVO! I am spreading the word through the special education community to use your wonderful calculator! Thank you SO much!.Version: 4.0

Calculater😍It is the best calculator I had ever used and seen in my whole entire life it is the best and it's three I would give this a top rating of five stars so I know some people have calculators on iPhones and iPads also computers Lasley iPods but this one is a great check you later because it can calculate anything so I survive you do get this calculator thank you and enjoy!.Version: 4.0

Perfect Calculator!I had a calculator on my iPhone that was just stolen and used it daily for my line of work. It was simple and I could figure everything out on it. Now that it's stolen I'm using my iPad as my main unit and phone but, it didnt have a calculator app. I downloaded this one because I need a calculator every 5 mins and this one is identical. It's an awesome but, simple calculator!.Version: 4.0

What else could you need for everyday?I can do most 3 digit figures in my head, but sometimes you just need to have something to figure out multiple combinations. This is great for those everyday calculations that you want to have quick and accurate. Thanks for the simple interface and clean look of this app..Version: 4.0

Good app was awesome appWhen I first started it years ago, it was awesome! But the last year, year and a half, it has gotten commercial. Seems it’s getting worse as time goes on. It still does what I need without to much problems, yet. But looks like I might have to look around for another sooner rather than later..Version: 4.1

RE: calculatorI have used a different calculator since I got my phone (years ago). I think it's the one that's automatically there with purchase. Somehow I deleted the app. Was going to use the same one until I saw this calculator. I absolutely luv it!! It's so easy to read and has a 3D effect. Don't plan on ever switching back!🤗.Version: 4.0

Nice Little Calculator For Apple Watch 3I downloaded this little calculator app for my Apple Watch 3. I was pleasantly surprised that it works quite well and is easy to use on the watch. This is definitely a nice basic calculator to use. I search for quite a while and looked at different apps for the calculator And this one hands-down Thank You Florida Les.Version: 4.0

Great simple appThis is a great simple app and I use it often. I would give it 5 stars if it had a percent % button on the vertical portrait setting of calculator. If you use the wide landscape view there is a % button. I never use the +/- button and agree with another reviewer that it should be replaced when the % button..Version: 4.0

Love it 😍Where were you when I needed a calculator (3) years ago. Glad I found you and keep up the good works... I wouldn’t mind having to pay a fee to get rid of the ads. That mess up the appearance of the nice looking app. Are you listening ???? Please, please remove the ads. Will pay to have ads removed. Thank you 🙏🏾.Version: 4.1

Great for what it was meant forSimple, basic functions with large keys is what this calculator is all about, and it does what it was made for perfectly. Like another reviewer said, if your looking for all the wiz-bang options this is not your huckleberry. If, however, you’re looking for basic-done-perfect, look no further..Version: 4.1

Sweet and SimpleI’m happy with this because it is a basic but awesome calculator. I bring it up and it’s ready to go! Others waste my time with “advertisement's” before I can use it. So annoying. Thank you for this wonderful calculator that does the job without wasting my time..Version: 5.1

Nice but now annoyingBeen using this simple app for years but recently big ads have been popping up. Shutting down and restarting the app helps with them but I should have to take these extra steps just to use a calculator. Why this decision was made I don’t know but might start looking for another calculator that’s add free (didn’t mind the banner ones on the bottom).Version: 5.2

Free International Money Transfer 💸Enjoy high maximum transfers into more than 20 currencies while saving up to 90% over local banks! The cheap, fast way to send money abroad. Free transfer up to 500 USD!AdvertorialVersion: 5.4


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