Subintervals

In-app purchases
4.6
194 reviews
Content rating
Everyone
5K+
Downloads
Content rating
Everyone
Learn more
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About this app

Elevate Your Training with Subintervals

Subintervals transforms your intervals.icu data into actionable insights. This app brings your training activities, events, and performance metrics to life through detailed displays and interactive graphs. Customise and control your data for a tailored analysis, and seamlessly sync with intervals.icu for up-to-the-minute information.

Key Features:
- Detailed visualisation of activities and events.
- Dynamic, interactive graphs for performance tracking.
- Effortless sync with intervals.icu.

Please note that it is an independent application developed by an enthusiast keen on providing a complementary tool to the official platform.
The intervals.icu mobile app
Updated on
18 Jul 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Personal info
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

189 reviews
Rene Rivera
14 May 2026
A wonderful interface to intervals.icu. The stats and tracking are clear even on a tiny phone screen. Some things, like adding some activities is easier in this app than directly in Intervals. There are a small number of things I wish it had. I hope that over time they get added as the author is active and responsive in the Interval forums. There are some minor bugs, like discrepancy between Intervals and this on the profile. Update to a 5 rating. Continue to use it. And it keeps improving.
1 person found this review helpful
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Inaki Arroyo
12 February 2026
Thanks for the review! 🙌 Glad you’re enjoying the interface. I’m working on the missing features — appreciate the 4⭐!
Mike Bisson
25 May 2026
Nice clean appearance, that I want to like more than I do, on the fence about uninstalling at mo, may check in future, but seems to lack settings/options I'd like to land on the fitness page, not calendar. I'd like to switch out the (cycling) ramp rate chart, for a running specific one like on the intervals.icu website; 'Ramp - Palladino", or 'Rolling ramp rate'. Samsung A34, the Activity Fitness etc buttons across the bottom are hidden by the, floating system back, home and menu buttons.
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Josh
6 June 2026
probably a nice app if the bottom button bar weren't hidden behind the android 3-button nav bar.
2 people found this review helpful
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What's new

Improvements
- Moved support pages into the More tab and refreshed the More screen with clearer cards, icons, and descriptions.
- Updated the More tab icon to better match the new layout.
- Improved activity stream charts to better respect your unit preferences, including altitude and distance-based labels.

Bug Fixes
- Fixed pace chart rendering so metric pace charts display with the expected direction and labels.
Content rating
Everyone
Learn more

App support

About the developer
Iñaki Arroyo Nebreda
dev@inakiarroyo.com
C. del Montón de Trigo, 1, P4 7B 28760 Tres Cantos Spain