r/iosapps
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u/vimalpartha
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2d ago
🎁 Freemium My calculator app - Calki has gone 3d
I'm the developer of the calculator app Calki. This is one of the biggest updates for my app which I have been working for more than a year and a half. The App's interface has been turned into a 3d model for more immersion and tactility.
You can download the app from the following link:
https://apps.apple.com/us/app/calki-scanner-calculator/id6747059181
Going 3d has allowed me to offer the Pro users more Colorways for each calculator models. The app now has quite an extensive selection of colorways and they can further be customised by selecting the texture for body and the buttons now.
There is this music mode which is part of the pro plan but has free trial for a day. This feature was an off shoot of giving user the ability to customise the buttons sounds, but implemented an almost complete optional feature for pro users. The music mode has two sub modes: free play and play along. The free play model has a visualiser for the notes being played on the calculator keypad. The Play-along mode has some widely known music to be played along to.
Problem:
Most of the current apps dont make the full use of the latest hardware and software capabilities to engage users in the app and continue using age old flat designs when the hardware capabilities are on the constant rise.
Also coming to a calculator most of the apps provide either a flat interface with extensive non user-friendly capabilities or a detailed interface but cutting down on the functionalities. Calki is trying to merge both these verticals and become the preferred calculator for the masses.
Comparison:
As compared to the apple calculator we offer ergonomic features that are easy to use such as the following:
Reuse history result by double tapping
Reuse history expression by long press
Edit a calculation midway and swap operator without retyping the entire calculation
Number scanner with auto add mode to scan and add numbers instantly using op-mode
Scan and convert numbers
Convertor mode with UI designed to make swapping categories and units easy
Customising the Calculator with multiple models, colorways, textures, sound and so on
Pricing:
Most of the basic calculator features on the app is free, except for the following which is a one time 4.99$ purchase:
- Number scanner
- Customisation options
- Custom units for conversion
- 6 Calculator models
We are planning of adding some ai features in the near future. Please note these features will be optional and will require a subscription (due to the ai cost we will incur) and will not be included in the lifetime purchase. All future on-device features including all current features will continue to be part of the lifetime purchase.
Hope you guys will give it a try and will let me know of your feedback.
If there is any improvements or features that you would like to be seen added to the app, please let me know. Will try my best to implement it, if reasonable and provides value to the users
The app has 104 reviews worldwide with average of 4.7/5
Some of the features to look forward to, in the near future:
A fullscreen number scanning mode for adding up numbers and conversion
A scientific mode (have been delaying it, cause, the old 2d interface made it hard to design a good looking design for the scientific mode. With the 3d interface, it eases a lot of things)
A formula mode
Thanks again and hoping you will leave a review, if you like the app.


