Fuel economy, maintenance, fueling, and expenses can be recorded through the webpage ( and the cell phone; as the cell phone gets connected to the internet, the data will be synchronized automatically to spare users the trouble of backup.

No need to worry about forgetting the time of maintenance or changing parts anymore.
As you record the maintenance info, the system will automatically help you manage the status of your vehicle(s).

If you are interested in knowing what other vehicle drivers think or how their vehicles perform?
you can check it via our app and share your opinions too.

Do you find it troublesome to transfer data when you change a new mobile phone?
iKnow99 stores the records of your vehicle in the cloud space, so you don't have to worry about data backup or using multiple devices at the same time.

In addition, you can log in the webpage ( to edit the records of your vehicle conveniently.

Even if you don't fuel the tank to the full, you can know the fuel consumption.
iKnow99 is a professional fuel-recording tool, which will calculate the statistics of fuel consumption based on the capacity of your fueltank.

(1) Users can store maintenance sheets and receipts.
(2) Users can know the status of vehicle maintenance clearly.
(3) Users can know the fuel consumption without fueling the tank to the full.
(4) Users can know the various expenses of the vehicle(s) well.
(5) Users can manage multiple vehicles.
(6) Users don't need to back up records when changing cell phones.
(7) Users can edit maintenance records via our webpage easily.

iKnow99 - Car Aide: users can purchase capacity to upload pictures. iknow99 provides different uploading space and vehicle numbers according to the version users subscribe.

Free Version:
Users acquire free capacity based on the levels.
Users can manage up to five vehicles.

Storing capacity: 150 MB
Vehicle number: 5
Fee: US $3.99/ year

Storing capacity: 500 MB
Vehicle number: 10
Fee: US $8.99/ year

Storing capacity: 2.5 GB
Vehicle number: 50
Fee: US $33.99/ year

iknow99 car aide will charge your iTunes account annually based on the version you subscribed. If you don't want to subscribe automatically, please stop the subscription within 24 hours after it is due. You can stop the automatic annual subscription in the setup of your iTunes account anytime.

We hope we can provide you with a good-quality software and services, but we know there is always room for improvement. Please go to our FB page ( to give us suggestions, thank you!

Terms of Use: https//

What’s New

Version 2.16

Fixed Facebook login error.

Ratings and Reviews

4.9 out of 5
5.9K Ratings

5.9K Ratings

大根億 ,



料很多 ,



Developer Response ,


ムカつく腹立つ ,



Developer Response ,


App Privacy

The developer, iKnow99 Technology Co., Ltd., has indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Purchases
  • Search History
  • Identifiers

Data Linked to You

The following data may be collected and linked to your identity:

  • Purchases

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Search History
  • Identifiers
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More


iKnow99 Technology Co., Ltd.
100.3 MB

Requires iOS 10.3 or later. Compatible with iPhone, iPad, and iPod touch.


English, Simplified Chinese, Traditional Chinese

Age Rating
In-App Purchases
  1. Basic NT$120.00
  2. Basic NT$120.00
  3. Vehicle Transfer NT$130.00


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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