# Aika: Workout Timer > Aika is a workout timer for iOS and Android, with EMOM, AMRAP, Tabata, count-up, countdown, and custom interval timers. The website provides workout-format explanations, example sessions, and instructions for timing workouts with Aika. For Time workouts use count-up timing and optional round tracking. The linked guides are HTML pages with the complete article content. ## Website - [Aika home](https://aika-timer.mikkolehtinen.fi/): App overview and timer features. - [Workout guides](https://aika-timer.mikkolehtinen.fi/guides/): Overview of workout formats and timer guides. - [Workout glossary](https://aika-timer.mikkolehtinen.fi/glossary/): Definitions of functional fitness, CrossFit and HYROX terms, with workout notation, tempo and RPE examples. ## Workout guides - [What Does EMOM Mean?](https://aika-timer.mikkolehtinen.fi/guides/what-does-emom-mean/): Learn what EMOM means, how work and rest fit into each minute, and how to time four example EMOM workouts with Aika. - [What Does AMRAP Mean?](https://aika-timer.mikkolehtinen.fi/guides/what-does-amrap-mean/): AMRAP means as many rounds or reps as possible. Learn both meanings, how to pace a workout, count your score, and set an AMRAP timer. - [EMOM vs AMRAP: What’s the Difference?](https://aika-timer.mikkolehtinen.fi/guides/emom-vs-amrap/): Compare EMOM and AMRAP timing, pacing, rest, and scoring. See the same exercises in both formats and choose the timer for your workout. - [What Is Tabata? The 20/10 Workout Explained](https://aika-timer.mikkolehtinen.fi/guides/what-is-tabata/): Understand the 20 seconds work, 10 seconds rest, eight-round Tabata timer, the original protocol, and how to set up a four-minute block. - [What Does “For Time” Mean in a Workout?](https://aika-timer.mikkolehtinen.fi/guides/what-does-for-time-mean/): For Time workouts fix the work and measure your finishing time. Learn how rounds, time caps, pacing, and Aika’s round counter work. - [How to Use an EMOM Timer](https://aika-timer.mikkolehtinen.fi/guides/how-to-use-emom-timer/): Set up an EMOM timer in Aika: choose rounds, set a one-minute interval, understand the cues, and time alternating or longer intervals. - [How to Read a Workout](https://aika-timer.mikkolehtinen.fi/guides/how-to-read-a-workout/): Decode workout notation with examples: 5×5, 3×10 @ RPE 8, EMOM 10, 21-15-9, tempo and time caps. Learn what to do and when to rest. - [How to Read Tempo in Strength Training](https://aika-timer.mikkolehtinen.fi/guides/how-to-read-tempo/): Learn what the four tempo numbers mean. Read 3-0-3-0, 3-0-1-0 and 3-1-X-1, understand pause squats, and avoid common notation mistakes. - [What Is RPE in Strength Training?](https://aika-timer.mikkolehtinen.fi/guides/what-is-rpe/): Understand RPE and reps in reserve with a practical lifting chart. Learn what RPE 8 means and how to read sets prescribed with RPE or RIR. - [HYROX Terms Explained: Stations, Roxzone & Race Format](https://aika-timer.mikkolehtinen.fi/guides/hyrox-terms/): Understand HYROX terminology, the eight workout stations, Roxzone transitions and race divisions before reading your next training session. - [Heart Rate Zones Explained](https://aika-timer.mikkolehtinen.fi/guides/heart-rate-zones-explained/): Learn how to read heart rate zones, what Zone 2 means, and why max-heart-rate and threshold-based systems can give different training ranges. ## Download - [App Store](https://apps.apple.com/app/apple-store/id6765643812?pt=128853017&ct=aika_website&mt=8): Aika for iOS. - [Google Play](https://play.google.com/store/apps/details?id=com.mikkolehtinen.timer): Aika for Android. ## Optional - [Support](https://aika-timer.mikkolehtinen.fi/en/support/): Help, common questions, and contact information. - [Privacy policy](https://aika-timer.mikkolehtinen.fi/en/privacy-policy/): App and website data practices. - [Terms of use](https://aika-timer.mikkolehtinen.fi/en/terms-of-use/): Terms for using Aika. - [Sitemap](https://aika-timer.mikkolehtinen.fi/sitemap.xml): All public pages, including localized support and policy pages.