Stoichiometry Pro Stoichiometry Pro

Stoichiometry Pro targets common stoichiometric tasks: balancing chemical reactions of unlimited number of components, finding molar masses, moles and masses of reactants and products and defining the limiting reagent, based on chemical formulas, stoichiometric coefficients, and any quantitative data provided.

The app analyses chemical reaction typed in “Reaction” field, balances it (if possible), finds molar masses and builds table with list of compounds (reagents and products coloured differently), for quantitative data input. All that triggered by pressing the = button.
Example 1: How many moles of H3PO4 are needed in order to obtain 2.0 g of NH4NO3, in the reaction:

H3PO4 + (NH4)2MoO4 + HNO3 = (NH4)3PO4(MoO3)12 + NH4NO3 + H2O

Solution: The first step is balancing chemical reaction and finding molar masses, since moles-mass conversion is needed. Reaction is balanced and all molar masses are calculated automatically by pressing the “=” button.

H3PO4 + 12(NH4)2MoO4 + 21HNO3 = (NH4)3PO4(MoO3)12 +21NH4NO3 + 12H2O,

The next step is to find the moles of NH4NO3 from the mass (2.0 g), and then convert them to moles of H3PO4 based on 1:21 ratio obtained from the balanced reaction. Stoichiometry application provides data table that comprised of masses and mole rows for data available before reaction initiated and obtained or left after the reaction is accomplished. When calculate button that pointing towards products, ▶▶ is pressed, the final masses and moles are calculated from the initially provided amounts of reactant and products. On the opposite, when the calculate button pointing left,◀◀, is pressed, then initial reactant and product amounts that would be required to achieve the provided final state are calculated. The later is exactly matches our situation, as we need to find the initial amount of H3PO4 from the final, known NH4NO3 mass. So we set the NH4NO3 mass (2.0 g) to the final mass field and press calculate button ◀◀ to automatically fill the table with all masses and moles for all components. Apparently, 1.19 mmoles of H3PO4 are required to get 2.0 g of NH4NO3.

Important Points:

Either moles or masses can be filled in, but if both are provided and they don’t match, then the moles value will have a preference.
For balancing redox reactions please refer to Electrochemistry application.…/id1546919546

Compatibility update.

Price: $3.99 USD
Version: 1.4
Size: 1.71 MB
Seller: Roman Volinsky
Released: 2020-12-31 08:00:00
Updated: 2021-01-14 23:28:41

Charging Live – Animation Play Charging Live – Animation Play

If you want to display cool animations while charging, try our app, which offers several styles of charging animations and is very easy to use.

Cool charging animation – charging show is coming! It’s no longer boring to charge your iPhone! It meets all kinds of personalized needs of your mobile phone charging state! Just install the charging show and set it according to the tutorial. Plug in the charger on your mobile phone, and you don’t need to open the app. The charging show starts running directly, and the charging effect appears immediately,bring you visual and auditory enjoyment!…/id1546806337

Price: Free
Version: 1.0
Size: 82.27 MB
Seller: Aaron Kwok
Released: 2020-12-31 08:00:00
Updated: 2021-01-01 01:45:26

Nail Salon⋆ Nail Salon⋆

Welcome to Beauty Girl Nail Salon! Hand nail design, nail polish and many accessories… – we have it all!
Every girl can take care of her hands and make herself a beautiful manicure here.

We provide 4 different nail styles for you. Summer, Cupcake, Galaxy, Flower… Start the nail design at your casual time now! Also, you can try our Special Nail Challenges! Come on, show your great artistic skills in Beauty Girl Nail Salon!

Game for all girls! Change your skin color freely!
Choose Casual or Special Style to play!
Large selection of nail shapes, colors, patterns.
Many modern jewelry and stylish rings are waiting for you!
Choose a background for your photo.

How to play:
Choose a game type and theme to start!
Create your own manicure designs!
Having fun from unlimited combinations of nail shapes, colors and patterns!
Decorate your fingers with glamorous rings.
Record your nail design and share it with your friends.


Subscription pricing and terms:

This app offers an auto-renewing monthly subscription at $0.99/month to provide unlimited access and other premium features.

Payment will be charged to the credit card connected to your iTunes Account when you confirm the initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. Your account will be charged for renewal within 24-hours prior to the end of the current period, and the cost of the renewal will be identified. You may manage your subscription and auto-renewal may be turned off by going to your Account Settings after the purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable.

Your use of this application is governed by the Terms of Service available at:

Collection and use of your data are subject to the Privacy Policy available at:

About Hugs N Hearts
Hugs N Hearts is an acclaimed mobile games developer who is enthusiastic about creating diverse and high-quality games for kids. We aim to provide users the best gaming experiences with high quality graphics and game design.
We are always looking for opportunities to improve our games. Please feel free to leave us comment and let us know what you think.

Crash, Freeze, Bugs, Comments, Feedback?
Feel free to drop us a line at

Discover more free games with Hugs N Hearts
– Subscribe to our youtube channel at:
– Learn more about us at:…/id1530793212

Hi there,
We updated the app to fix some bugs.

Thanks for your feedbacks and reviews. If you have any idea or comment, please give us a review 🙂

Price: Free
Version: 1.1
Size: 192.86 MB
Seller: Hug n Hearts Inc (Hugs N Hearts)
Released: 2020-12-31 08:00:00
Updated: 2021-01-08 01:56:02

Final Fatality Final Fatality

Fight to defeat enemies and unlock special abilities and weapons.
Many weapons and eye catching skills waiting for you to unlock.

– Tap at middle of the bar
– Collect weapons and upgrade powers
– Defeat bosses

– Many weapons: bows, axes, wand, swords, hand fighting…
– Various skins
– Lot of power ups…/id1544713035

Fixed bugs

Price: Free
Version: 1.4
Size: 249.68 MB
Seller: Viet Game Development Corporation (vmoga)
Released: 2020-12-31 08:00:00
Updated: 2021-01-21 03:18:29

Sushi Damu Tustin Sushi Damu Tustin

Enjoy Sushi Damu Anytime, Anywhere!

– Online food ordering optimized for your mobile device.
– The checkout details are pre-filled, so you can order with just a few clicks.
– Save multiple addresses and pick the preferred one at checkout.
– Real time confirmation of the order – meaning that the restaurant staff confirms your order right away, with the estimated ready-time.

No middle-man, no confusing call-center, no over-promises. This is just between you and the restaurant.…/id1546823795

Reliability and performance improvements

Price: Free
Version: 3.1.1
Size: 77.73 MB
Seller: SUSHI DAMU LLC (Sushi Damu – Tustin, CA)
Released: 2020-12-31 08:00:00
Updated: 2021-01-11 13:05:55

Imposter Attack Imposter Attack

It’s time to take the crewmates down!

Sneak in the grass, transform flexibly, and kill the crewmates with one shot. Collect gems and upgrade weapons to become the best killer ever!

What are you looking for? Join Imposter Attack and challenge yourself!…/id1546840890

Fix some issues

Price: Free
Version: 2.0.3
Size: 313.45 MB
Released: 2020-12-31 08:00:00
Updated: 2021-02-16 14:35:24

MP3 Video Converter MP3 Video Converter

MP3 Video Converter is the best audio extractor with which you can easily convert your video clip into audio file.

Main features:
– Extract the audio from video.
– Fast and easy converter.
– Unlimited converter.
– Easy file manager, play and share your convert.

Step by step instructions:
1) Choose Video that you want to convert.
2) Press “Convert” button.
3) Press “My files” button show audio file converted.

Thank you for your choice, the best choice ever !!!…/id1546953348

Price: $3.99 USD
Version: 1.0
Size: 8.74 MB
Seller: Vo Thanh Toan
Released: 2020-12-31 08:00:00
Updated: 2020-12-31 23:33:20

Second Grade ABC Spelling Second Grade ABC Spelling

With this game your child will learn to:

– Recognize the letters of the alphabet and vocabulary.
– Drag and drop the syllables to create a word correctly.
– Recognize blends and digraphs.
– Synonyms and antonyms.
– Read and sort sentences.

Easy to play . You have the option of unlimited play . You can see your progress step by step .
Suitable for 6, 7, 8, 9 years. You can play without internet connection.

Available in English and Spanish.

This app don’t collect any data from user or device, don’t include third-party analytics and don’t include advertising.…/id1545823057

Price: $0.99 USD
Version: 1.0.0
Size: 21.04 MB
Seller: Maria Dolores Garcia Ferre
Released: 2020-12-31 08:00:00
Updated: 2020-12-31 15:27:39