Penelitian ini bertujuan untuk mengembangkan media pembelajaran kimia berbasis android dan mengetahui karakteristik, kualitas dan efektifitas dari media pembelajaran berbasis android. Jenis penelitian ini merupakan penelitian dan pengembangan. Penilaian produk dilakukan oleh ahli media, ahli materi, pendidik kimia, peer reviewers dan uji coba peserta didik. Data penelitian dikumpulkan melalui angket penilaian media, angket motivasi dan tes, kemudian dianalisis dengan Manova. Hasil dari penelitian ini adalah: (1) media pembelajaran kimia berbasis android memiliki karakteristik, yaitu visualisasi menarik, praktis dan fleksibel serta evaluasi soal yang variatif, (2) media pembelajaran kimia berbasis android dinilai layak digunakan dalam pembelajaran, ditinjau dari aspek materi, aspek media dan hasil uji coba peserta didik, serta (3) terdapat peningkatan yang signifikan antara motivasi belajar dan prestasi kognitif peserta didik yang mengikuti pembelajaran menggunakan media pembelajaran kimia berbasis android dengan pembelajaran konvensional. Hasil penelitian ini menunjukkan bahwa media pembelajaran kimia berbasis android layak dan efektif digunakan dalam pembelajaran kimia. Kata Kunci: pengembangan, media pembelajaran kimia berbasis android, motivasi, prestasi kognitif. Â DEVELOPING ANDROID-BASED CHEMISTRY INSTRUCTIONAL MEDIA TO IMPROVE THE LEARNING MOTIVATION AND COGNITIVE ACHIEVEMENT OF SMA STUDENTS Abstract The aims of this study are: to develop android-based chemistry instructional media and to reveal the characteristic, the quality, and the effectiveness of android-based chemistry instructional media. This research was research and development. The product assessment was conducted by a media expert, a material expert, chemistry teachers peer reviewers and students. The data collecting technique was done by using media evaluation questionnaires, motivation questionnaire and test, then it was analysed by Manova. The results of the study show that: (1) the android-based chemistry instructional media has characteristic such as interesting visualisation, practical and flexible and vary of evaluation test, (2) the developed android-based chemistry instructional media is appropriate for teaching, in terms of material evaluation aspect, media evaluation aspect, and based on the results of studentsâ tryout, and (3) there is a significant differences in the improvement of learning motivation and cognitive achievement of students between learning using android-based chemistry instructional media and conventional learning. The result showed that the android-based chemistry instructional media was appropritly and effectively used for teaching. Keywords: development, android-based chemistry instructional media, motivation, cognitive achievement