One By One User Reviews

Top reviews

Incorrect Calculation?

tan(5pi/6) is wrong. I’m unsure what the answer has been programmed to be but whatever it is, it’s not accurate. Other than that, great game.

Almost Perfect

This is a wonderful app and great opportunity for practicing mental math. And this is why I care enough to make a bug report.

Please fix calculus. Some of the answers require infinity, and this is not allowed in the answers. For example, I recently got the question: Given h(x) = 8/x find h’(0). The answer is -∞ as this is the limit from the left and right hand sides, but this is impossible to enter with the ‘Differential Departments’ keyboard.

One possible stopgap solution would be to make the correct answers available if you pay for a skip (with in-game currency), this way we users can figure out what the game wants in such strange situations. Alternatively, you could take away the questions generating these issues, possibly by plugging all differentiation questions into the Wolfram engine to check the outcomes and then deleting the ones that don’t match. Of course, this won’t work if the questions are auto generated and not drawn from a bank —unless you run all possible questions (which would probably take a long time).
Show more

Love it, want more!

I’ve been having a lot of fun with the app! The derivative and trig section is great practice to knock the rust off my calc now that I’m back in complex analysis. I’d love to see more sections added such as integrals, combinatorics, some kind of series stuff, maybe even some set theory unions and intersections type stuff! I would pay for some extra packs of the sorts! Thanks!
Show more

Wonderful math app!!

My free time is so much more productive with this fun app! The way that the problem streaks are timed makes it exciting and the currency system feels rewarding. Using this app is just as fun as other puzzle games but instead of mindless puzzles, it helps you develop practical knowledge! The user interface is also really well done, stable, and easy to use. I reccomended this app to anyone trying to improve their quick math skills! The only gripe that I have is that there isn't an 'explanation' section in the app to refresh my memory on how to do some of these problems. But other than that the app is perfect for math lovers! You won't regret downloading it, especially if you love math! 😄
Show more

Beware!

Most features are locked. If a kid wants to purchase “Trig Town” the app will attempt to charge $250,000. I’m reporting this to the app store.

love the app! however…

i’m a little torn on this. this is an incredibly well made game/app that is not only pretty fun but also looks really aesthetically pleasing. i’m a college student who hates studying, but desperately needs to get better at calculus. i was looking for something that would turn practicing calculus (and math in general) into something more fun. this app is pretty much exactly what i was looking for, which is why i came here to review it. that being said, i just looked over the description again and i just realized that the app store it says it collects location and user data? i assume that’s probably just due to the fact that it’s free, but i’m still a little concerned. i know all apps have some type of tracking so i shouldn’t care but i usually try to avoid ones with several types of data collected. i already love this app a lot so i’ll keep playing it anyways, but i am still a little concerned about it. i wish someone could respond and explain if i’m overthinking it lol. it might just be the fact that ads inherently have trackers on them regardless of the app so idk
Show more

Great math game, but I have two suggestions!

Long story short, this is one of the best math games I have ever played. You wouldn’t think it would be fun; after all, the problems aren’t disguised at all. However, with the fact that there are “golden” problems that give you artifacts and that there’s a “money” counter that goes up as you solve, it always keeps you coming back for more. I also appreciate the “Battle” Mode. However, I have two suggestions: make the “average time taken on arithmetic/algebra/trig/differential problems” display a “rolling average,” which excludes earlier problems. For example, only consider the times of the last 250 problems or so for the average. Since the point of this app is to get faster and better, a rolling average makes sense since after solving enough problems, it won’t matter how fast or slow you are, your average won’t budge since there’s so much data. It would help measure improvement and trends, showing how far you’ve come instead of reminding you of the past. It would also help refine precision for the battle mode, making sure you’re always being challenged no matter how good you are since you first started. Also, I’m over halfway done with collecting all the artifacts, and it’s worrying me about what I’ll do once I’ve found them all. For me, a big part of the game is the constant waiting for a golden problem. So, instead of having to add more artifacts, why not allow for duplicates once you’ve found them all? These duplicates would show as a simple number in the bottom-left corner of the artifact tile, and every duplicate you get would “upgrade” the artifact, making it more powerful. The boost wouldn’t have to be too big, but it would keep the thrill of golden problems after getting all of the artifacts. (More artifacts would not go unappreciated though.) However, One By One is a great app for anyone looking for a fun and fast way to improve their math skills, and it has problems for all ages: for a five-year old practicing addition, a fourteen-year old brushing up on algebra, or for a high-school student studying for their Trig or differentials final.
Show more

Awesome summer learning tool

My child loves this “game “ and is keeping their skills sharp during the summer

Five stars

Best math app ever

I LOVE THIS APP

Saved my grade and is such a game changer!! Highly recommend this app

Great Game

Developer knows what he’s doing. I was failing every math class before this app. #bless

Great app I just have one suggestion

When doing battles mode the app should automatically clear your answer if you don’t answer in time so you don’t have to spend time on the next answer deleting numbers.

Great app

This app got me through calc. 🙏🙏🙏

From Dweebus to Math Genius!!!

I was unable to do basic math before I downloaded this app. Now I feel like a human calculator

This got me through calc 1

This app got me through calc 1 with flying colors. It is so visually appealing. It makes me want to do math all day everyday. Hoorah

Absolutely Great!

I found this app very helpful for practicing and expanding on my knowledge of trigonometry. It’s a fun yet effective way to practice your math skills whether you are learning something for the first time or just reviewing.

Fast and Fun Math App

I’ve been playing this app for a bit and the game feels really nice. I like the sounds and screen and can’t wait for more updates to expand my skills.

Fun!

Interesting game that has helped me with my quick math skills!

One By One

One of the most interactive and understandable math arithmetic games I have ever played. The game is increasingly complex as one dives into the rewards system and high level mathematics, giving it an elite level of professionalism. Fun to play, helped me learn. 5 Stars.

Such an amazing app

I love it