Comparison

Locking Check vs Forgotten prevention

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Locking Check

Features
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Huh? Did I lock the door? So that you don't have to worry about "what's going on", this app starts the app when you lock the door and records it. The time is recorded, so you can check when you turned it on or not. It also resets automatically at the specified time, and you can turn everything off so you don't have to turn it off. Other than at home, I think that it can be used for offices and stores, etc., to check the lockdown. [Basic Features] Location registration (name, photo, with or without automatic reset, with or without logging) Reordering Places Once registered, it's designed to be simple enough to use every day with a tap when you lock the door.

About

Forgotten prevention

Features
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"Did I lock the door when you left the house ...?" "I should have confirmed it earlier, but I'm not confident ..." "YOSSHI" is the application that supports those who have such anxiety. About "YOSSHI" 1.Record confirmations using the checklist. - Record the date and time of the check. 2.Automatic uncheck function. - You can save the trouble of unchecking. 3.Accidental tap prevention function. - Recommended for those who are worried about checking due to incorrect tapping. 4.Backup function. - You can restore the data to another device. Recommended for people like this 1.Those who have a lot of things left behind. 2.Those who are worried about locking when going out 3.Those who have a lot of things to check every day.

Screenshots

Locking Check2 screens
Forgotten prevention4 screens

Verdict

The call

The clearest difference is in-app purchases: Forgotten prevention at none against Locking Check's 1. Forgotten prevention also leads on iOS requirement (10.0 vs 14.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Locking Check sells 1 one-off in-app purchase. Forgotten prevention asks for nothing beyond the download.

UpkeepUpdate frequency

Locking Check ships an update every 6 weeks, Forgotten prevention every 3 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 4 level
Locking Check versus Forgotten prevention: the parameters behind the verdict, then further details
ParameterLocking CheckForgotten prevention
PriceFreeFree
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsYesYes
In-app purchasesYesNo — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS14.010.0 — better
Further details — not scored
Size5 MB23 MB
Age rating4+4+
DeveloperAtsushi EzakiToshinobu Miyauchi

In-app purchases

1 purchases

Locking Check

One-time1
  • Hide Ads$1.99
None

Forgotten prevention

No in-app purchases

Questions

Is Locking Check free?
Locking Check is free to download, with in-app purchases available.
Is Forgotten prevention free?
Forgotten prevention is free to download, with no in-app purchases.
Do Locking Check or Forgotten prevention have ads?
Both Locking Check and Forgotten prevention show ads.
Which is updated more often, Locking Check or Forgotten prevention?
Locking Check ships an update every 6 weeks, and Forgotten prevention every 3 weeks. Most recently, Locking Check was updated on November 7, 2026 and Forgotten prevention on November 3, 2026.

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