Today’s Apps Gone Free: Chrono Plus, MathStudio Express, Chug Patrol and More

Manage your tasks and time, calculate and plot graphs, and enjoy a 3-D interactive pop-up book with today’s collection of apps and games.

All app prices are subject to change at any time and without notice regardless of stated free duration. Price changes are solely under the control of the developers.

Universal:

Sketch Me! Sketch&Cartoon ($1.99 → Free, 9.5 MB): Turn your photos into drawings, cartoons, or sketches with Sketch Me. It’s for anyone who wants to give their photos a completely different look.

Sketch Me doesn’t require a lot of tinkering. All you need to do is import a photo from your library or take a new one from within the app. Then tap on one of the 19 effects and enjoy the results. If you choose to, you can adjust other parameters like contrast and brightness. Sketch Me also includes 18 shapes that can be applied in order to show off the distinct effects.

Sketch Me! Sketch&Cartoon is available for free for a limited time. It has a 4.5-star rating with a total of 189 ratings.

Pixagram ($1.99 → Free, 22.3 MB): Create stunning photos to share with Pixagram. Social media addicts will enjoy this one.

Pixagram has everything you need to make your photos stand out. You’re able to apply 25 effects, 15 textures and light leaks, 20 vignettes, more than 30 frames, and text with more than 30 fonts. If that isn’t enough, you’re also able to adjust parameters like exposure, saturation, temperature, and vibrance. Don’t know what you want? No problem. The app offers the ability to randomly apply effects, textures, and vignettes.

Pixagram is available for free for a limited time. It has a 4.5-star rating with a total of 27 ratings.

Chrono Plus – Time Tracker & Timesheet with Billing, Invoicing, and Reporting ($1.99 → Free, 10.0 MB): Manage your tasks and time with Chrono Plus. It’s a must-have for freelancers.

Chrono Plus will help you stay on top of your tasks and ensure you get paid for your time. Before you do anything else, you’ll want to define your hourly rate and enter your company info. This will allow Chrono Plus to calculate your costs, generate graphs and charts, and create invoices. The app’s intuitive interface also allows you to create tasks and subtasks in seconds, and common gestures allow you to interact with them in a variety of ways. The best part is, Chrono Plus is able to sync with its Mac counterpart, which is also available for free today!

Chrono Plus – Time Tracker & Timesheet with Billing, Invoicing, and Reporting is available for free for a limited time. It has a 4-star rating with a total of 30 ratings.

Chuggington – We are the Chuggineers ($3.99 → Free, 317.0 MB): The Chuggineers need your help building bridges in this 3-D interactive pop-up book. It’s designed for children age five and under.

Chuggington is the follow-up to Chug Patrol. In this tale, the Chuggineers are building a bridge for the new high-speed link to Tootington, but not all has gone as planned. Just like the original, you and your child can follow along with the narrator or read on your own. The interactive book features 17 pages of story, animations, and illustrations along with seven video clips from the TV show. It also includes four immersive games.

Chuggington – We are the Chuggineers is available for free for a limited time. It has a 5-star rating with a total of 5 ratings.

Chug Patrol: Ready to Rescue ~ Chuggington Interactive Pop-up Book ($3.99 → Free, 134.2 MB): Find out if you have what it takes to be a Chug Patroller in this 3-D interactive pop-up book. It’s designed for children age five and under.

Chug Patrol tells the tale of four Chuggers who are moving up to advanced rescue training. As they set out on their adventure, they will prove their bravery and show off their news skills. You and your child are able to follow along with the narrator or read on your own. The interactive book features 21 pages of story, animations, and illustrations along with nine interactive pop-up scenes.

Chug Patrol: Ready to Rescue ~ Chuggington Interactive Pop-up Book is available for free for a limited time. It has a 4.5-star rating with a total of 13 ratings.

MathStudio Express – Symbolic (CAS) graphing calculator ($9.99 → Free, 2.3 MB): Calculate and plot graphs with MathStudio Express. It’s ideal for students, teachers, and anyone else in need of a powerful graphing calculator.

MathStudio Express is the most versatile calculator you’ll find in the App Store. It’s a full-featured scientific calculator with over 200 functions. It allows you to perform everything from basic calculations to college calculus in a snap thanks to its unique interface. You’re able to access the app’s multiple keyboards with a swipe, and graph 2-D and 3-D equations in real-time with just a tap. The app also includes time graphing, plot lists, and even support for scripting.

MathStudio Express – Symbolic (CAS) graphing calculator is available for free for a limited time. It has a 4-star rating with a total of 172 ratings.

That concludes today’s issue of Apps Gone Free. If you like staying on top of these daily deals, don’t forget to check out our free AppsGoneFree app. It provides all the deals each day, and even an archive of past deals that are still active.

Developers:

If you are a developer who would like to get your app included in our “Apps Gone Free” daily lists, here’s our basic set of rules:

It must have at least a three-star average rating at the time it goes free.
The app must not have been free numerous times (3+) over the last six months.
The free version of your app must not include ads.

To submit an app, simply send a request to tyler@appadvice.com with the subject “Apps Gone Free.” Please include the name of the app, a link to it in the App Store, when and for how long you intend to offer the app for free, and anything else you would like to share. We will take it from there.