Considering the topic discussed in this research, there are some researches related to the topic as follows :
First, the previous research finding that can be a consideration theory is taken from thesis of IAIN Tulungagung by Yunevika Mughti, with the title “The Effectiveness Of English Grammar Application In Students English Grammar Achievement At The First Grader Of Islamic Senior High School effectiveness of the use of English grammar Application in teaching grammar, especially the Simple Past Tense for first graders at Blitar City Islamic Senior High School. The study tries to answer this problem:"Is there a significant difference between English Grammar Achievement students who are taught using the English Grammar App and those who are not? This study aims to determine the difference in significance Achievement of English Grammar among students taught in English Application of Grammar and those who do not This study used a quasi-experimental research design that has two group.
The first group as a control group and the other group as an experimental group. The population of this study were students of class 10 Islam SMA Kota Blitar for the 2018/2019 academic year. Example technique using purposive sampling technique from a population 400 students. The population is divided into 8 classes and then researchers choose two classes to be the experimental group and the control group. That data were collected through tests. After treatment, the students' scores increased significantly. Could seen from the computation results that show the P value is smaller than α(0.005). With a value of P is 0.000. So, the null hypothesis is rejected. It means English Grammar application is effective for teaching simple past tense first grade student of SMA Islam Blitar in the school year 2018/2019. Thus, it
can be said that the application is considered effective teaches grammar especially the Simple Past Tense for high school students. Students will be more enthusiastic about learning grammar. The students too feel flexible when they use the application as a medium because it is very easy simple. They shouldn't use a lot of paper to do the test.
By using this application, students also try to be honest in their exams and in showing their grades teacher. 33
Second, the previous research finding that can be a consideration theory is taken by Anca-Georgiana FODOR & Bogdan Vasile COVACI with the title “E- Learning Mobile App for Android and Ios “English Grammar Learn&Test”. This article is aiming to present the architecture and few elements from the developing cycle of “English Grammar Learn &Test” app. This is an elearning tool for people who want to improve their English Grammar and Vocabulary. The app was approved by Google Play and Apple Store and it is available for free on both platforms. The app already reached350.000 users, it is rated at 4.43out of maximum 5.0 in Google Play Store. Since mid-June 2016, we launched the app also in the Apple Store iOS devices.
This paper presents the architecture and few elements from the developing cycle of
“English Grammar Learn & Test” app, an educational tool for users across the world who want to improve their English Grammar and Vocabulary. This app was approved by Google Play and Apple Store and is available to download for free on both platforms.34
Third, the previous research finding that can be a consideration theory is taken from Jadat Imanudin and Darojatun Qurota A'yun Jurnal Fakultas Keguruan & Ilmu
33 Yunevika Mughti,The Effectiveness Of English Grammar Application In Students English Grammar Achievement At The First Grader Of Islamic Senior High School Kota Blitar In The Academic Year Of 2018/2019 ( IAIN Tulungagung : Thesis,2019).
34 A.G. VODOR & B. V. COVACI, E=Learning Mobile App For Android And Ios “English Grammar Learn &
Test”, (Database System Journal, VII(2), 2016).
Pendidikan Universitas Islam Al-Ihya Kuningan with the title "The Effectiveness Of ”Grammar Bahasa Inggris” Application In Improving Students’ Grammar". This study was done to find the effectiveness of Grammar Bahasa Inggris application in improving students’ grammar on simple present tense, which was observed and analyzed from grade ten students in SMK Darul Ulum Kuningan. The method used in this study was quantitative. The researcher took 16 students to be a sample of this study using random sampling. The sampling in this study was two groups consist of eight students for experimental group and eight students for control group. Before giving treatment, the writer gave pre-test. After giving pre-test, students in experimental group are taught by Grammar Bahasa Inggris application and control group without it. Finally, Post-test is given after giving the treatment. Then, it was analyzed by using t- test. The result showed that t-test is higher than t-table, t-test (t0)
> t-table (tt) (2,48 > 2,145). It means that Ha is accepted while H0 is rejected is rejected. It can be summarized that there is significant different between students’
grammar using Grammar Bahasa Inggris application and without using Grammar Bahasa Inggris application. The writers concluded that using Grammar Bahasa Inggris is effective to improve students’ grammar specially on simple present.35
Based on the previous study above the researcher was motivated to conduct a research related to the usage of mobile application in learning grammar. The researcher uses the application from playstore called Learn English Grammar application to teach future tense in the tenth grade of SMKN 1 Jenangan in academic year 2021/2022. It used test as the instrument those were pre-test and post- test. This research wants to find out the effectiveness of Learn English Grammar
35 Jajat Imanudin and Darojatun Qurotu A'yun, The Effectiveness of "Grammar Bahasa Inggris" Application in Improving Students' Grammar (Universitas Islam Al-Ihya Kuningan: Jurnal Fakultas Keguruan & Ilmu Pendidikan, 2021).
application in teaching grammar. The effectiveness was known from the significant difference before and after being taught by using those App.