Comparison

ChkOBD OBD2 Analyzer vs LookLockdown

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

Head to head
About

ChkOBD OBD2 Analyzer

Connect your iPhone or iPad to your car's engine to view vital data. Access basic engine values for free, with in-app purchases for advanced diagnostics, smog check readiness, VIN analysis, and error decoding.

Highlights
  • View engine values
  • In-app purchase for advanced data
  • Smog Check Assistant
  • VIN Analyzer
  • Error Decoder and Reset
  • Bluetooth adapter compatibility check
Features
Read full description

ChkOBD let you connect your iPhone and iPad to your Car and view the most important Engine values in a very intuitive user interface in an appealing user-friendly way. ChkOBD connects wirelessly to an ELM237 enabled OBDII - Bluetooth adapter which is readily available from many 3rd party vendors. From this free application that let you have access to the basic “Engine Values”, you will have In-App purchase to access additional information such as : . Advanced Engine Values, an extended choice of sensors available on your car, that you can select and monitor. The available Engine Value from your car, are all listed in a “grey” mode, so, you will have no surprise of what you will get (or not get !) after the In App purchase . Smog Check Assistant, to know if your car will pass the next Smog Check at the state official station, or the App will let you know what needs to be fixed, before driving there, . VIN Analyzer, will let you know what information is in the “government file” from your car, including date and place of manufacturing, . Error Decoder and Reset, to know what is the current error that is in the Memory of the computer of your car and let you have a way to try to reset this error (Normally, it comes back on, if the cause of the error is not mechanically fixed). This is an error scan that is going through about 4'000 possible errors. Usually all these information will be read from all car that have been sold in the USA after 2005. The fact that these applications are offered from inside a free app, in our side, from this free app, we are able to check before any of your purchase, that your car and your Bluetooth adapter will be 100% compatible with these applications. We are using this technology to try to provide to our customers the best possible satisfaction.

About

LookLockdown

Features
Read full description

LookLockdown – Smart Family Control Create a healthier, safer, and more organized digital life for your family. LookLockdown is a simple parental control and digital wellbeing tool designed for families. It helps parents guide children’s device use, manage screen time, and set scheduled app access rules for study, rest, bedtime, and focus periods. Key Features: • Screen Time Limits: Set daily usage limits to help children build healthier digital habits. • Scheduled App Access: Set start and end times for selected apps during study time, bedtime, or family time. • Custom Schedules: Create flexible routines for school, breaks, sleep, and focused periods. • Focus Scenes: Save common rule sets and switch between them with one tap. • Usage Reports: Review activity insights to better understand digital habits. LookLockdown uses Apple’s Screen Time and Family Controls frameworks to provide user-controlled, scheduled restrictions. App selections are made through Apple’s system picker, and access rules are temporary and automatically end when the scheduled period ends. LookLockdown focuses on a gentle, practical approach to family digital management, with a warm and minimal interface that makes everyday routines easier to maintain. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rickyesppg.github.io/looklockdownprivacy/

Screenshots

ChkOBD OBD2 Analyzer4 screens
LookLockdown3 screens

Verdict

The call

The clearest difference is update cadence: LookLockdown at monthly against ChkOBD OBD2 Analyzer's every 3 months. ChkOBD OBD2 Analyzer's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases 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. ChkOBD OBD2 Analyzer sells 4 in-app purchases, starting at $4.99 per month and LookLockdown sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ChkOBD OBD2 Analyzer ships an update every 3 months, LookLockdown monthly. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 7 level
ChkOBD OBD2 Analyzer versus LookLockdown: the parameters behind the verdict, then further details
ParameterChkOBD OBD2 AnalyzerLookLockdown
PriceFreeFree
Rating3.0 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size63 MB14 MB
Age rating4+4+
DeveloperCheck On-Board Diagnostics LLC昊 陆

In-app purchases

4 purchases

ChkOBD OBD2 Analyzer

Subscriptions1
  • Smog Check Assistant$4.991 Month
One-time3
  • VIN Analyzer$1.99
  • Error Analyzer$2.99
  • Advance Engine Values$4.99
2 purchases

LookLockdown

Subscriptions1
  • Monthly$0.991 Month
One-time1
  • Lifetime$4.99

Questions

Is ChkOBD OBD2 Analyzer free?
ChkOBD OBD2 Analyzer is free to download, with in-app purchases available.
Is LookLockdown free?
LookLockdown is free to download, with in-app purchases available.
Do ChkOBD OBD2 Analyzer or LookLockdown have ads?
Neither ChkOBD OBD2 Analyzer nor LookLockdown shows ads.
Which is updated more often, ChkOBD OBD2 Analyzer or LookLockdown?
ChkOBD OBD2 Analyzer ships an update every 3 months, and LookLockdown monthly. Most recently, ChkOBD OBD2 Analyzer was updated on October 13, 2026 and LookLockdown on October 25, 2026.

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