For those who are preparing for Web tests, buying question banks or borrowing them from the libraries or upperclassmen are common options.
However, not everyone is able to afford the books or find a borrowing source.
Don't fret because there are ways to get the question banks for free!
There may be fewer questions available and the edition might be slightly outdated, but it is still a great option for those who want to practise questions for free.

Apps
1. 「玉手箱 WEBテスト 新卒 テストセンター 対応」for Tamatebako
iOS: https://tinyurl.com/yyqwemmk
Android: https://tinyurl.com/y5aomx48


2. 「SPI言語・非言語〜2019年・2020年卒就活・転職対策〜」for both language and non-language components of SPI
iOS: https://tinyurl.com/y3nvrx3z
Android: N.A.

3. 「SPI言語分野　適性検査　就活向け」for the language component of SPI
iOS: https://tinyurl.com/y28lkowu
Android (2016 edition): https://tinyurl.com/y5onarfy

4. 「SPI非言語分野　就活向け問題集」for the non-language component of SPI
iOS: https://tinyurl.com/y42gtq8k
Android (2016 edition): https://tinyurl.com/yyygewy8


Question banks
1. SPI free question bank & mock test
Free download when you register for free membership on Career Park.
　https://tinyurl.com/y6nd3ae4

2. Tamatebako free question bank
Free download when you register for free membership on Career Park.
　https://tinyurl.com/yxtnkmxb　

＊There are complaints online of email spam and even phone calls from Career Park after registering so please use it at your own discretion!