On Google Play
TaskLock
Screen time your kids earn
Lock games and social apps on your child’s phone until today’s tasks are done. Homework, chores, reading or brushing teeth happen first, and apps open when they’re finished.
Independent Android studio
Practical apps for everyday family life.
SimpDev builds small, focused Android apps that solve one real problem well. No accounts you don’t need, no ads, and your data stays on your device unless you choose otherwise.
TaskLock is available now. Sub Rotation and LeaveSafe are on the way.
Our apps
Three apps, each built to do one job well on Android.
On Google Play
In development
Sub Rotation
Fair substitutions for kids’ football
Set up your squad, pick a lineup and keeper, and get clear OUT/IN suggestions during the match so every child gets fair minutes. No mental maths on the sideline.
Coming to Google Play
Learn more
Coming soon
LeaveSafe
Leave the cabin with peace of mind
Checklists for your cabin, boat, caravan or second home. Run the departure check, add a photo as proof, and share the trip report with the family.
Coming to Google Play
Learn more
TaskLock
Available on Google Play · Android
TaskLock helps parents turn everyday responsibilities into healthy screen habits. Choose the apps to lock on your child’s device, add today’s tasks, and the apps open when the tasks are done. It replaces daily arguments with one simple rule: responsibilities first, screen time after.
How it works
- Pick the apps to lock: games, social media, YouTube and so on.
- Create the daily tasks your child needs to finish.
- When a locked app is opened, TaskLock shows a friendly lock screen instead.
- As tasks are completed, apps unlock automatically or after a parent approves. Your choice.
- Optional rewards: extra screen time, or pocket money with parent approval.
Why parents use it
- Less conflict, more structure. Clear rules without constant reminders.
- Motivation that works. Kids see progress and unlock rewards by finishing tasks.
- Flexible control. Schedule blocking windows for after school or bedtime.
- Parent app on your own phone. Approve requests and follow progress remotely.
- Privacy by design. Works locally on the device, syncs only what pairing needs.
Who it’s for
Families where routines are hard, screen time is a daily negotiation, or parents simply want a calmer and more consistent way to manage apps.
Sub Rotation
In development · Android
Sub Rotation helps coaches keep playing time fair in children’s football. Set up your squad, pick a starting lineup and keeper, and follow clear substitution suggestions during the match, including optional planned second-half keeper changes.
How it works
- Create a team and add players.
- Choose match settings: field size, half length and stint length.
- Pick the first-half keeper and an optional second-half keeper.
- Select the starting outfield lineup.
- During the match, follow the suggested OUT/IN swaps and keep minutes fair.
Coming to Google Play
Why coaches use it
- Fair playtime without constant mental maths on the sideline.
- Keeper time tracked separately from outfield minutes.
- Works fully on the device. No account and no cloud sync required.
- Built for real match pace: clear suggestions, manual overrides when needed.
Who it’s for
Grassroots and youth coaches who want fair minutes for the whole squad, and parents who help out on match day.
LeaveSafe
Coming soon · Android
LeaveSafe helps you remember what you checked before leaving a cabin, boat, caravan or second home. Keep a checklist for each place, run the arrival and departure checks, add photos and notes, and share the trip report with whoever needs to know.
How it works
- Add a place, such as the cabin or the boat.
- Build its checklist: stove off, water closed, doors locked, and anything else that matters.
- Run the departure check and tick items off. Snap a photo if you want proof.
- Share the finished trip report or the checklist itself with family or co-owners.
Coming to Google Play
Why people use it
- No more “did we turn off the stove?” on the drive home.
- Photos and notes on each item, so you can check later.
- Works offline and needs no account. Everything stays on your phone.
- No GPS or location tracking.
Who it’s for
Cabin and boat owners, caravan travellers, and families who share a second home and want the same routine every time.
About SimpDev
SimpDev is a one-person Android studio. I build apps for problems I meet in my own life: getting kids to finish homework before gaming, giving every child on the team fair minutes, and driving away from the cabin without wondering whether the stove is off.
Every app follows the same principles: simple ideas done well, clear design, stable releases, and respect for your data. Feedback from real families and coaches shapes every update.
Email support
support@simpdev.no
Private by default
Data lives on your device. Sync only when you turn it on, and only what the feature needs.
No ads, no data selling
None of our apps include advertising SDKs or sell personal data.
Built for families
No public profiles, feeds or chat. Kids use TaskLock under a parent’s control.