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Today’s Apps Gone Free: Kalkulator, Calendarium and Plant Light Meter

Today’s Apps Gone Free: Kalkulator, Calendarium and Plant Light Meter

App Bargain Bin
March 8, 2019

Crunch numbers and recall the results, discover historical events, and measure light with today’s collection of apps.

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.


Kalkulator 2 ($0.99 → Free, 3.9 MB): Crunch numbers and recall the results with Kalkulator. Anyone who needs a smart calculator.

Kalkulator will help you make quick work of complicated calculations. It features standard and scientific sets of keys that can be accessed with a swipe. A separate history screen allows you to view, share, delete, or recall calculations with ease. Kalkulator displays both your calculation and the result at the same time, and allows you to copy, paste, or add the result to memory via 3D Touch. Results can be sent instantly to the developer’s Konvert app as well.

Kalkulator 2 is available for free for a limited time. It has a 5-star rating with a total of 7 ratings.

Plant Light Meter ($0.99 → Free, 8.6 MB): Measure light levels with Plant Light Meter. Those with indoor plants.

Give your indoor plants a fighting chance with Plant Light Meter. Determine a potential location for your new indoor plant and launch Plant Light Meter. Then point the camera in the direction of the natural light source. The app will measure the maximum light level value that your plant will receive: very low, low, medium, and high. If you’re unsure of how much light your plant needs, a helpful guide is available in-app.

Plant Light Meter is available for free for a limited time. It has a 4.5-star rating with a total of 122 ratings.


Calendarium – About this Day ($0.99 → Free, 55.3 MB): Discover historical events and holidays that happened on this day with this reference app. Anyone interested in learning something new each and everyday.

Calendarium helps you live in the present and the past. The top portion of the screen displays today’s date, the week of the year, sunrise and sunset times, and the number of days that have passed and are left in the year. The bottom portion includes all of the historical events and major holidays that occurred on this very day. Tap and hold on an event or holiday to share it via Twitter, Facebook, Messages, or email.

Calendarium – About this Day is available for free for a limited time. It has a 4.5-star rating with a total of 1191 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.


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 [email protected] 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.

Mentioned apps

Kalkulator 2
Kalkulator 2
Plant Light Meter
Plant Light Meter
Studio Nano Ship, Inc.
Calendarium - About this Day
Calendarium - About this Day
Idea Studio

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