When it comes to modern parenting, mothers are the necessity of invention.

There is an avalanche of smartphone apps created by parents designed to make child-rearing easier, more efficient or more fun.

Out of the 2 million apps available in the leading app stores, thousands target the demographic of busy parents -- especially moms, who make many of the household purchasing decisions.

Some of the more interesting ones were also created by moms who had run into a parenting challenge they wanted to solve for themselves.

For example: One Texas mom was tired of her teen ignoring her texts and calls. So she developed Ignore No More -- an app that remotely shuts down a child's phone until he or she calls the parent for a passcode to unlock it. Another mom created ParentBlocked, which allows parents to block a teen's texting capabilities while they're driving.

Three St. Louis-area moms recently took on the proliferation of expensive extracurricular activities for children. Many parents are familiar with the frustration that arises when a child expresses great enthusiasm for a sport or activity, but then loses interest before the season or semester has ended. These three moms have launched a site that allows children to try a variety of activities and lessons for a flat fee of $99 per month.

The idea surfaced when they reconnected at a mutual friend's birthday party last year. They were all working professionals in pivotal points in their corporate careers, and all looking to make a change. They formed a company a month later.

They are launching Kidzxplor.com in August, as a way to make scheduling kids' activities easier and cheaper overall. A child can take classes or lessons from about 40 different providers without having to make a months-long commitment to any of them. While only in the St. Louis area for now, the founders are hoping to expand Kidzxplor to other markets soon.

The idea is modeled after ClassPass, a fitness startup that gives members access to a variety of fitness studios and classes for a month-to-month fee. Angela Sandler, one of the Kidzxplor founders, asked why parents couldn't schedule their kids' activities the way she could sign up for fitness classes on her phone.

The women turned that idea into reality.

Another one of the founders, Stephanie Saur, is an attorney and mother of two daughters in grade school. She said she didn't realize how much money was going out the door on her daughters' extracurriculars until she got a monthly statement for their music lessons. By joining Kidzxplor, customers pay $99 per month for the first child and $59 for siblings, and their children can take an unlimited number of classes, such as gymnastics, swimming or dance, from any of the providers. It operates on a month-to-month basis without any long-term commitment.

"Parents are strapped time-wise and strapped financially," Sandler said. The entrepreneurs are betting that a solution that made sense in their lives will be valuable to other parents, as well.

Given the rise of digital parenting, it may prove a smart strategy.

There are apps to track your newborn's every bowel movement and nap, ones that turn your phone into a baby monitor, others that keep track of kids' activities and organize family schedules. You can get recipe ideas based on what's in your fridge and pantry, keep track of a chore chart or potty train via phone. You can hunt for babysitters, find coupons, track your teens, locate nearby playgrounds, archive your kids' artwork and store family medical information using a phone app.

It's the double-edged sword of new tech: It takes time to help us save time.

And app developers are hoping to turn parental convenience into a profitable business model.

It's become a verb.

Families that Pokemon together, stick together. The massively popular phone app "Pokemon Go" has lured herds of young people from their rooms, where they were glued to their screens, into the great outdoors, where they are glued to their screens.

In many cases, they're allowing their parents to join the hunt.

The PokeCraze can be perplexing for those who missed the earlier Pokemon era, circa the late '90s, and downright scary for the tech-reluctant. "Why are people getting into car accidents and falling off cliffs playing a video game?" they might wonder.

And how can you tell the difference between a zombielike human playing "Pokemon Go" and a zombielike human texting, surfing or tweeting?

I turned to my resident experts, an 11-year-old boy and a 13-year-old girl, to explain this viral phenomenon to their clueless parents, aunt and uncle. None of the adults would know the difference between a Charmander or Bulbasaur if one kicked them in the Pokeballs.

These were actual questions posed by the adults, half of whom can decipher and write complex legal documents. (Disclaimer: The writer is not among that half.)

The lesson began inauspiciously.

Adult: So, are you a Pokemon?

Child: No. You are a trainer who catches Pokemon.

Adult: How does the game know where everything is?

Child: There's a GPS-enabled map.

Adult: So, you want the Pokemon to know you are at the park? You want the Japanese programmers who developed the game to know everything you're doing?

Child: There are 21 million people playing Pokemon.

Adult: Do you have Pokemon in your house? Show me how to catch one.

Child: They spawn randomly in the real world. I have to wait for them to show up on the phone screen.

Adult: Where is the start button?

Child: It starts when you press the app.

Adult: What's the object of the game? How do you win?

Child: You catch all the Pokemon. There's no such thing as "winning."

Adult: Are they like your soldiers?

Child (puts head down in his hands): Oh my god.

The tutorial went downhill from there.

Still, it resembled reports of other similar conversations happening around the country. One woman said her mother still believes there's a real-life prize to collect at the "end of the game."

Another said she thought it was a trap used by criminals to lure and rob people. (That has happened, but it's not the intended use.)

That's not to say that plenty of adults haven't caught the Pokemon bug. One player said it tapped into some kind of OCD impulse he has about collecting things. Well, imaginary animated creatures are even cheaper than souvenir magnets, and less frightening than Annalee dolls.

I wanted to know how I would be able to distinguish the "Pokemon Go" people running into poles from the texters doing the same.

My teenager explained that the players have distinct characteristics. They hold the phone like an artist's palette in their palms while they walk, instead of directly up to their faces. They aren't looking down constantly. They will stop at random places and look around. While riding a bike, they may be holding the phone upside-down in a power-saving mode, she said.

But the biggest giveaway is that you can see the game on their phone screen.

You might also overhear Pokemon players speaking a distinct Poke-dialect, discussing the various creatures and their powers. You might spot a player by their distinctive plumage, such as a bright yellow T-shirt with a nonthreatening cartoon face on it.

You may have seen stories about people playing the game in inappropriate locations, such as the Holocaust Museum, a national cemetery or other such memorials. It's perfectly acceptable to give these people dirty looks. If I knew how, I'd share instructions on how to set all their captured Pokemon free.

There may be untapped potential in the game's ability to drive behavior.

One of the adults receiving the Pokemon crash course in my home wanted to know if she could hide Pokemon in her child's backpack to encourage him to study.

"That's totally not how it works," the child said.

I was trying to build up the emotional wherewithal to watch the latest police shooting video circulating the internet.

Police officers shot and killed Alton Sterling outside a Baton Rouge, Louisiana, convenience store. When such a shooting looks unprovoked and unwarranted, the viewer could be witnessing a murder, one unlikely to result in any kind of prosecution.

I was trying to convince myself that it was necessary to be a witness to such incidents happening by a police force for which we collectively pay. Before I could click play, a suburban St. Paul, Minnesota, police officer killed Philando Castile during a traffic stop. Castile's girlfriend documented the aftermath through a video that spread through social media.

Again, I couldn't watch.

I read the words her 4-year-old daughter said to her mother, who was taken into police custody after seeing her boyfriend shot to death: "It's OK, Mommy. I'm right here with you."

I could hear a 4-year-old's voice.

My internal debate continued. When a system seems so entrenched and resistant to change, you should be a witness when it fails, I thought. Watching such footage should make us more upset, scared and hurt. We can channel those emotions to try to raise children with more empathy and compassion for all people. We can flash back to those images when we need courage to challenge a racist comment made in our presence.

While brutality and injustice have existed as long as humanity, the video documentation and its instant spread are relatively new.

I had nearly convinced myself to watch both videos when a sniper shot and killed five police officers in Dallas at a protest in response to the shootings.

More victims, more grief, more anger.

We were still reeling from this attack when another police officer was shot. This time it was a routine traffic stop in my own suburban St. Louis neighborhood. My children were playing outside when I saw the news. I called them inside and closed the garage door. I could hear news helicopters overhead.

At the time, we didn't know the condition of the officer or whether the suspect had been caught. (Ballwin Officer Michael Flamion suffered life-altering injuries and will need long-term care. Antonio Taylor faces felony charges after reportedly shooting him in the neck from the back.)

It feels different when random violence erupts in your immediate vicinity. Chaos and uncertainty are more destabilizing the closer they hit to home.

Later that day, I took baked goods to our neighbor who is a police officer to let him know we were praying for the officer and the department. I needed to feel a sense of community and show my children how people come together in tragedies.

But I wondered if my deliberate refusal to watch these events unfold undermined my desire to be part of the solution. I asked Vetta Sanders Thompson, a clinical psychologist and professor at the Brown School of Social Work at Washington University. She said it is important to be informed when wanting to have an honest conversation about what policing looks like in our society for all people. But also that no one should risk their mental health or well being.

"You have to take care of yourself," she said. "And other people don't know your limits."

Multiple exposures to such scenes of violence carry additional stress for people who are more vulnerable, she said. That includes people with a history of trauma, such as a sexual assault history, combat experience, a chronic stressor or health issue, or those living in a home or community with significant violence. These videos can make you feel more unsafe in the world than is necessary, she said.

Her comments made me think more deeply about why the thought of watching the videos provoked such anxiety for me. I have been up close to human tragedy in my years as a news reporter. I've covered countless funerals of victims of violence, and talked to families in their moments of raw grief. Those experiences take an emotional toll, but they don't feel traumatizing for me.

There were two incidents in my early 20s, however, that hit close to home. My best friend from high school was shot and murdered at her college in Texas by a fellow student. Six years later, my aunt in Pakistan was murdered, shot point-blank, by an intruder. In the case of my friend, a beautiful girl from an affluent family, justice was swift. Her killer was convicted and executed. My aunt's killer was never found. The Pakistani police hardly investigated her case. It was extremely low priority: She was a politically unconnected, ordinary, stay-at-home mom.

Their deaths impacted me in ways others had not. Though I don't think of either of them when I see reports of mass shootings or gunshot victims, they affected how I perceive justice in the world.

Emotions connected to traumatic life events can lie dormant below the surface. Memories lurk in our subconscious.

Once I realized that watching real-life violence likely touched those same buttons, I gave myself permission to scroll past the posts that said "Warning: Graphic Video."

But I will amplify the message: We must do better.