OESF Certified Engineer for Android™ ( ACE )

How much technical capability do you have to develop Android? This OESF Certified Engineer for Android exam can prove your technical capability.

What is “OESF Certified Engineer for Android™” ?

Android market has received high expectation and Android has attracted a great deal of public attention; on the other hand, people have been concerning about a lack of engineers with the expansion of the Android market.
In order to solve these problems, OESF started to provide an official exam to certify your skills and knowledge for Android. That is “OESF Certified Engineer for Android™.” Please take this exam for acknowledging your own technical capability and knowledge, and to improve engineers’ skills for your company.


  • Android™ engineers
  • Java developers
  • Web application developers
  • iPhone application developers
  • Mobile developers
  • Students and teachers who are studying about Android™
  • University, technical schools, and educational institute

Trial Test

You can take this trial test to prepare for ACE application basic. We hope this trial will be useful for you to get ACE certification. Questions, answers, marking, and explanation are very similar to the actual exam.

Special features for “OESF Certified Engineer for Android™”

There are two types of exams for “OESF Certified Engineer for Android™” which are “Application Engineer Exam” and “Platform Engineer Exam,” and you can take an exam according to categories of work. Also, we provide only two levels of exams, “Basic level” and “Professional level”, so that people who take this exam can set their goal easily. Moreover, this exam is linked with ETEC (Embedded Technology Engineer Certification) which is based on ETSS that is developed by Information-technology Promotion Agency. We are sure it is worth taking ETEC because this exam will prove not only your skills related to Android, but also to check where you are at for being embedded engineer. We will give you more information for ETEC when all the details are decided.

Benefit of passing “OESF Certified Engineer for Android™”

Benefit to the companies:
  • can prove that retention of human capital and technical strength
  • can establish fair and objective view of evaluation and assessment system
  • can confirm result of development of human resources and personnel training

Benefit to the engineers:
  • can recognize own skills objectively and can build your career
  • can present your own skill as an official evaluation

Overview of the exam

This exam is performed by CBT. Successful candidates will receive certification from OESF.

OESF Certified Engineer for Android Application Basic Level
  • Test number: OA0-002
  • Testing time: 90 min. (Including questionnaires)
  • Type of question: Multiple choice
  • Numbers of question: 70 questions (depending on the test)
  • Testing method: CBT (Computer based test)
  • The date of test: everyday
  • Place of test: more than 160 places all over the world
  • You can check homepage of the Prometric website to find out the closest place to take test.
  • Evaluation method: admission decision (Acceptance line: 70% or more of correct answer)
*Those who pass the exam will receive certification from OESF

Examination fee

USD 200


Traditional Chinese
Japanese(Different site)

Procedure of the exam

ACE Application Basic was started from November 29th, 2010. This test can be taken everyday at the Prometric Test Center that is placed all over the world.

  1. Application
    • We accept online booking for applying this exam
    • Please make sure all the detail about booking, availability, and billing information on the Prometric homepage.
  2. Exam
    • Exam is taken at the test center that you have booked
    • Result of the exam will be described in the score report that will be sent after the exam
    • Score report will not be reissued; therefore, please keep your score report carefully
    • Successful candidates will receive certification from OESF within a month
Start to take the Exam.

Range of the exam

Questions of this exam will be asked from Android Engineer Skill Standard based on “Application Engineer Exam” and “Platform Engineer Exam”. Please click the link(s) below (if any) .

Based on Android 2. 3. 4. (From the end of October 2011 until now)
  • Platform Skill for Android™