# UU Scientific Calculator — Basic & Scientific Calculator

> Intuitive scientific calculator with handwriting input and advanced functions. (iPhone/iPad app by huan li.)

- Source: https://appshunter.io/ios/app/uu-scientific-calculator/id1343554953 (this page in markdown: same URL + `.md`)
- Developer: [huan li](https://appshunter.io/developer/558738985)
- Category: Utilities
- Price: Free with in-app purchases
- Rating: 4.73/5 from 26 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 12 MB
- Languages: English, French, German, Japanese, Portuguese, Russian, Chinese, Chinese, Vietnamese
- Released: 2018-02-06
- Data updated: 2026-07-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/uu-scientific-calculator/id1343554953/reviews.md

## What is UU Scientific Calculator?

It is a scientific calculator that very easy to use. Please tap the keys in the order of handwriting habit! And rotate for more functions;

Its very easy to use, for example, if you want to calculate

100*(1-25%)=?

Just tap the keys in the order of handwriting habit, From left to right.

So it should be look like:

"1000", "x", "(", "1", "-", "25", "%", ")" "="

and then you will get the result :750!

and also if you want sin90, just also tap the key as you write on

the paper, and it should look like "sin" and then "90"



FEATURES



OPERATORS WE ARE SUPPORT

· Basic operations: +, -, ×, ÷, .
· Powers, roots, exponentials: 3², √ , e³
· Miscellaneous operations: 60%, 5!
· Brackets: ( )
· Trigonometry: sin, cos, tan, sinh,cosh,tanh, 
· Inverse trigonometry: asin, acos, atan, asinh ,acosh,, atanh
· Logarithms: ln, log
· Constants: π, e



【VIP 3 Months Auto-renewing subscription】
1. Title：VIP 3 Months Auto-renewing subscription
2. Length of subscription：3 months
3. Price of subscription：USD0.99 every 3 months
4. The subscription fee will be paid within 24 hours before the end of the current period through your iTunes account unless you have cancelled the subscription at least 24 hours before the end of the current period  
5. You can cancel the subscription by this way:’setting’—>’iTunes Store and App Store’—>’Apple ID’—>’view Apple ID’—>’Subscriptions’—>’VIP 3 Months’—>’cancel’.
6.Customer Service WeChat Number：uuddz666

【VIP 1 Year Auto-renewing subscription】
1. Title：VIP 1 Year Auto-renewing subscription
2. Length of subscription：1 Year
3. Price of subscription：USD2.99 every year
4. The subscription fee will be paid within 24 hours before the end of the current period through your iTunes account unless you have cancelled the subscription at least 24 hours before the end of the current period  
5. You can cancel the subscription by this way:’setting’—>’iTunes Store and App Store’—>’Apple ID’—>’view Apple ID’—>’Subscriptions’—>’VIP 1 Year’—>’cancel’.
6.Customer Service WeChat Number：uuddz666


【Removes Ads Forever】
1. Title：Removes Ads Forever
2. Length of subscription：Forever
3. Price of subscription：$12.99
4. This item is a one-time purchase and requires no subscription. If you have already purchased this item success, you can use this item forever and if the ads still pop up, try to tap restore button to fix the problem. 
5.Customer Service WeChat Number：uuddz666


【Other Infomation】

Privacy Policy：https://xmq520.com/calc_term_pri.php

Term of Use：https://xmq520.com/calc_term_ou.php

Customer Service WeChat Number：uuddz666

Customer Service Email: lihuan168668@gmail.com

## Key features

- Handwriting-style input
- Basic and scientific operations
- Trigonometric functions
- Logarithms and constants
- Bracket support
- Rotate for advanced functions

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Yearly VIP Subscription | $2.99 | per year |
| Quarterly VIP Subscription | $0.99 | per 3 months |
| New Quarterly VIP Subscription | $2.99 | per 3 months |
| Yearly New VIP Subscription | $7.49 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Permanently VIP | $12.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/uu-scientific-calculator/id1343554953/reviews.md

### 1/5 — This is a really Rubbish developer!

*2022-06-17, version 1.7.9*

This is a really rubbish app. Cheating the users to pay 12 usd for nothing. Delete it immediately! Rubbish developer!

### 1/5 — One star for effort

*2019-11-26*

No memory; no tape; no delete for typing errors; no history; no copy/paste…? But yes; if you look long and hard, you'll find it actually has a 'clear' button! [Hint: clear buttons are usually distinct for a good reason].

This is a harsh judgement so I offer my apologies to a developer who has produced a functioning app without resorting to adverts or other distracting rubbish; but sadly, my conclusion is it's not much use.

## Frequently asked questions about UU Scientific Calculator

### How do I use UU Scientific Calculator?

You can use UU Scientific Calculator by tapping keys in the order you would write them, from left to right. For example, to calculate 100*(1-25%), you would input '100', 'x', '(', '1', '-', '25', '%', ')', '='. This intuitive approach applies to functions like sin90 as well.

### What mathematical operations does UU Scientific Calculator support?

UU Scientific Calculator supports basic operations (+, -, ×, ÷), powers, roots, exponentials, miscellaneous operations (like 60%, 5!), brackets, trigonometry (sin, cos, tan, etc.), inverse trigonometry, logarithms (ln, log), and constants like π and e.

### What are the subscription options for UU Scientific Calculator?

UU Scientific Calculator offers a 3-month VIP subscription for $0.99 and a 1-year VIP subscription for $2.99. There are also newer subscription tiers available at $2.99/P3M and $7.49/P1Y. Subscriptions auto-renew and can be cancelled through your device's settings.

### Is there a way to remove ads permanently from UU Scientific Calculator?

Yes, UU Scientific Calculator offers a one-time purchase for $12.99 that permanently removes all advertisements. If ads persist after purchase, you can tap the restore button to fix the issue.

### What devices is UU Scientific Calculator compatible with?

UU Scientific Calculator is designed for iOS devices, including iPhone, iPad, and iPod. It is rated for ages 4 and up.

### How often is UU Scientific Calculator updated?

The latest version of UU Scientific Calculator is 1.7.9, which was last updated on September 1, 2021. The app was initially released on February 6, 2018.

### What is the user rating for UU Scientific Calculator?

UU Scientific Calculator has a strong user rating of 4.7 stars, based on 26 ratings. This indicates a high level of user satisfaction with the app's functionality and ease of use.

### Does UU Scientific Calculator have ads?

No, UU Scientific Calculator does not contain advertisements in its base free version. However, there is an option to purchase a permanent ad removal for $12.99, which is a one-time purchase.

## Version history (last 5 releases)

### 1.7.9 — 2021-09-01

1. The price of VIP are rising. Congratulations to the users who purchased VIP before, who can continue to enjoy the VIP function of this calculator by the previous price;
2. Optimize the UI interface of VIP users under the iPhone SE2 model;
3. Bug fixes;

### 1.7.8 — 2021-07-10

1. optimize UI at minimalist orange theme;
2. fix bug it will invalidate fail when customer purchase success at the first time;
3. other bug fix;

### 1.7.7 — 2021-04-19

Add a step-by-step reminder when purchasing;

### 1.7.6 — 2021-04-11

fix the bug that the setting and history button is not flexible;
other bug fix;

### 1.7.3 — 2021-03-18

bug fix

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All apps by huan li: https://appshunter.io/developer/558738985

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*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 2026-07-10.*