Kubios HRV vs Timber
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kubios HRV
This app uses heart rate variability (HRV) to provide insights into your daily readiness and physiological stress. It requires a compatible Bluetooth heart rate sensor for measurements. Offers modes for personal readiness monitoring and advanced research recordings.
- Daily readiness monitoring
- Custom HRV recordings
- Scientifically validated algorithms
- Physiological recovery and stress tracking
- Comparison to population norms
- Support for Polar HR sensors
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Heart rate variability (HRV) based daily readiness and custom HRV recordings. Kubios HRV app uses scientifically validated heart rate variability (HRV) algorithms (used by scientists all over the world) to provide reliable information about your wellbeing and daily readiness. To make HRV measurements with the app, you need a Bluetooth heart rate (HR) sensor, such as Polar H10. Kubios HRV app has two modes of operation: 1) Readiness Measurement Mode monitors changes in your daily readiness status. By doing short (1-5 min), controlled resting HRV measurements regularly, you will receive reliable information about your physiological recovery and/or stress, how it changes from day to day, and how your HRV values compare with normal population values. Readiness monitoring is used by professional athletes in training optimization but can also be used by sports enthusiasts or anyone interested in their wellbeing, as it provides objective information about overall bodily stress as well as cardiovascular health. 2) Custom Measurement Mode, designed for researchers, health and wellbeing professionals, and sport scientists, conducts various types of HRV recordings. This measurement mode supports test-subject management, short- and longer-term measurements, live data acquisition, as well as event markers. Since the app is built with Polar mobile SDK, it can read live data from Polar sensors, including electrocardiogram (ECG) and heart beat interval (RR) data from Polar H10 sensors and live photoplethysmogram (PPG) and inter-pulse interval (PPI) data from optical Polar OH1 and Verity Sense sensors. Thus, when used together with these Polar sensors, the custom measurement mode provides an easy-to-use, light-weight, affordable way to obtain ECG, PPG and RR/PPI recordings. Regarding RR recording, the app also supports other Bluetooth HR sensors available on the market. Kubios HRV software license, which supports this measurement mode is required to store measurement data. HRV is a reliable measure of autonomic nervous system (ANS). It tracks the beat-to-beat changes in RR interval arising from the continuous regulation of heart rate by the sympathetic and parasympathetic branches of the ANS. Kubios HRV analysis algorithms have achieved gold-standard status in scientific research, and our software products are used at roughly 1200 universities in 128 countries. The main HRV parameters include the parasympathetic nervous system (PNS) and sympathetic nervous system (SNS) indexes, the computations of which have been optimized, using a large reservoir of scientific research results, to provide accurate interpretation of recovery and stress.
Timber
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Timber is a customizable interval timer and routine builder. Whether you're crushing a HIIT workout, sinking into a deep focus session, or perfecting your morning schedule, Timber lets you build your routine, your way. Create simple countdowns or advanced multi-step routines with reusable blocks, groups, repeats, nested timers, media cues, and background playback. Stop switching between separate apps for HIIT, Tabata, Pomodoro, meditation, stretching, coaching, and cooking. Timber lets you build the exact routine you need. BUILD ONCE, REUSE ANYWHERE Create simple or highly advanced timers using our flexible block-based system. • Create reusable timer blocks • Group blocks into circuits, sets, and rounds • Repeat blocks, groups, or full timers • Nest timers inside other timers • Merge blocks into groups or split them apart • Edit linked blocks once to update them everywhere, or unlink for a custom version • Duplicate timers and blocks for easy modification GUIDE EVERY STEP WITH RICH MEDIA CUES Don't just watch the clock. Attach rich media to any timer step so you know exactly what to do and when to do it: • Add YouTube, Vimeo, and Dailymotion video demos • Attach local video, audio, image, recording, and text prompts • Use text-to-speech voice cues for hands-free guidance • Add music, countdown sounds, and instructions to individual timer steps • Keep cues running with native background playback ONE TIMER FOR EVERY ACTIVITY • Workouts & Training: HIIT, Tabata, EMOM, boxing rounds, circuit training, stretching, and mobility. Add exercise demo videos right into your rest and work intervals. • Focus & Productivity: Pomodoro, deep work, studying, reading, and work sprints • Mindfulness: yoga, breathwork, meditation, and guided practice • Daily life: morning routines, cooking steps, speaking practice, and coaching plans TRACK YOUR PROGRESS See how consistently you’re completing your routines. • View weekly timer time, completed sessions, and streaks • Explore seven-day activity bars and a monthly heatmap • See per-timer stats including times run, total time, and average completion • Review completed, skipped, and unplayed sections of each session SHARE AND IMPORT COMPLETE TIMERS • Share lightweight timers with a QR code • Share media-rich timers as a Timber zip file • Choose which media files to include before sharing • Preview media before exporting or importing • Scan QR codes from another phone or from a saved image • Review, rename, and confirm shared timers before adding them • Imported timers stay clearly marked so you know where they came from RELIABLE BACKGROUND PLAYBACK Run timers with a focused, distraction-free display or continue while using other apps. Timber keeps your countdown, audio cues, TTS prompts, and notifications moving in the background. • Use a focused full-screen playback view • Follow and control timers with Live Activities on the Lock Screen and Dynamic Island • Keep timers and supported media cues running in the background FULL BACKUP & RESTORE Keep a portable copy of your Timber data. • Back up timers, blocks, history, media, and your theme preference • Export everything as a .timber.zip file • Preview a backup before restoring it • Choose individual timers to restore • Restore nested timers and their required media automatically PRIVATE & OFFLINE-FIRST Your data belongs to you. Timers, blocks, history, and local media are stored on your device. You decide when to export, share, back up, or restore them. No account required, no forced logins WHY CHOOSE TIMBER? • Replaces basic countdown timers, stopwatches, and routine apps • Reusable blocks make advanced timers faster to build • Rich media cues help you know exactly what to do next • QR and zip sharing make it easy to move routines between devices • Flexible enough for simple tasks and complex schedules Create once. Reuse anywhere with Timber. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Kubios HRV at none against Timber's 2. Kubios HRV also leads on ads (none vs shown). Timber's advantage is update cadence (every 2 days vs every 4 months). On price, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Timber sells 2 in-app purchases, starting at $1.99 per month. Kubios HRV asks for nothing beyond the download.
Kubios HRV ships an update every 4 months, Timber every 2 days. The most recent releases landed on November 6, 2026 and November 10, 2026 respectively.
| Parameter | Kubios HRV | Timber |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (198 ratings) — better | — |
| Positive reviews | 52.9% of reviews | — |
| Number of ratings | 198 — better | — |
| Update frequency | Every 4 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.2 |
| Further details — not scored | ||
| Size | 45 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Kubios Oy | SREEHARI P C |
In-app purchases
Kubios HRV
No in-app purchases
Timber
- Timber Pro Monthly$1.991 Month
- Timber Pro Lifetime$7.99









