Reliable
I’ve had this calculator for 10 years now, since the start of high school. Best purchase!! No notes.
The goat
Literally the best I use it all the time
Works perfectly
Great app.
It’s just as functional as a physical TI 83/84
This app is great. It’s just as functional as a physical TI 83/84.
Best Calculator App
If you use a TI-84 or TI-83 regularly, you are going to love this app! I'm a high school math teacher. It is really wonderful to have an app that works like the calculator that I regularly use! I like it so much I promoted it on my math website!
Best Calc for iOS
I used a TI-83 in college (engineering) back in the 90’s and this is the perfect digital calculator I’ve found. Free updates with it are great. I don’t use anything else and haven’t for years.
The best TI calculator app
This is the best TI calculator app!!!!
Horrible
I hate math
GrafNCalk83
Great calculator. Handy, easy to use, excellent for educational as well as professional purposes. I am very pleased.
They are always finding ways to improve their already excellent product.
They are always finding ways to improve their already excellent product.
By far the best graphing calc for iOS
2026 - I can't count the number of other apps I have tried since 2010, but this one is the best. Keep up the great work! (4Q2019 update) This is STILL *the* calculator app that beats out all others. I wish schools would standardize on this app. (1Q2026 update) Still the best!
Love this!
Very practical for my everyday use. Quite often I use the stats function to determine regression equations for grains vs velocity data.
By far the best graphing calc for iOS
I can't count the number of other apps I have tried since 2010, but this one is the best. Keep up the great work! (4Q2019 update) This is STILL *the* calculator app that beats out all others. I wish schools would standardize on this app. (1Q2022 update) Still the best!
A great calculator app!
I’ve been using this app for years. Great to have a graphing calculator in my pocket that works like the one I’m used to! I really appreciate the updates to support the new iOS. Happy to see that the author is still keeping it up to date.
Edit: now it’s 2026, and he’s still keeping it updated!
Edit: now it’s 2026, and he’s still keeping it updated!
Great scientific calculator with really helpful graphing features
Nice scientific calculator with great graphing capabilities, eliminating having to carry a separate calculator around
Just got it…
& I’m very annoyed that buttons will occasionally cover other buttons & will Not allow The offensive buttons to be moved ( !!! ) also; is there a pdf instructions manual that goes along with it ?
Best calculator
A must purchase.
A nice little calculator for a great price
Functions just like the familiar TI83 handheld including stat regression graphs. Can’t buy handheld TI 83 for this price. Free updates to boot. Free programs do not compete well with this app.
Love
I truly love this calculator. Got me through calculus one and two.
Fantastic
Really great calculator! Makes this mathematician happy!
Great!
Fantastic scientific calculator. Did everything I needed for my college level course and was extremely helpful to me with all the useful features and great design.
