Comparison

ExpoDose vs SweatCoach

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ExpoDose

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ExpoDose® is a smart dosimeter for the automatic assessment of personal sun exposure in everyday life. It doesn't need any solar sensors or wearable devices, just the smartphone that can be even kept in a purse or pocket. You can find more information in a short YouTube video https://www.youtube.com/watch?v=iObUwhCb-24 and at https://www.expodose.com. It can be used: - to self-monitor your personal daily sun exposure in everyday life; - and/or to support your participation in clinical / research studies (e.g. about sun exposure-related lifestyle, sunscreen use, outdoor workers' risk assessment, skin diseases management/prevention). The app is based on the siHealth’s HappySun® patented technology for the satellite-based monitoring of solar radiation, anywhere and anytime (https://www.happysun.co.uk). Use of the app The ExpoDose® app automatically tracks your sun exposure during daytime as long as the smartphone is connected to internet and the app is kept active in background. In particular, the app automatically detects whenever you are outdoor and tracks the incident spectral solar radiation you accumulate on your body, in multiple spectral bands (eg UV-B, UV-A, erythemal) and on multiple body sites (scalp, face, shoulders). In case you wish to do so, you can share your monitored sun exposure with a clinical / research institution having an active ExpoDose® license. In that case, you'll need to log into the app with a specific "access code" that will be provided to you by the clinical / research institution (e.g. if you are a participant in a clinical trial or research study), and the institution's staff will be able to see your accumulated sun exposure data via a dedicated web-portal. Please contact us at support@expodose.com or visit https://www.expodose.com to receive more information about how to activate an ExpoDose® license for research / clinical institutions. Main features of ExpoDose® - Sensor-less solar exposure monitoring using real-time satellite data, including automatic detection of indoor/outdoor position based on smartphone's sensors (manually editable to further increase accuracy if needed) - Whole-body sun exposure mapping, thanks to the assessment of direct, diffuse and ground-reflected components of sunlight - Solar irradiance assessment in multiple spectral bands and with several photobiological action spectra, including UV-B, UV-A, UV-A1, UV-A2, visible, HEV blue, erythemal-weighted, vitamin D-weighted, photopic-weighted, PpIX-weighted - No periodic calibration needed thanks to Earth Observation satellite imagery and GNSS analytics - Global geographic coverage - Exposure dose updated every 1 minute Real-world scientific validation The satellite-based technology used for ExpoDose® has been validated in collaboration with international institutions, like Public Health England (now UKHSA), NHS Tayside, King's College London, European Space Agency, UK Space Agency, MedCin Dermatology. Several research studies were conducted in real-world conditions around the world in all weather conditions for validating the high accuracy and reliability of this technology, including: - Morelli M et al. (2016) Photoch. Photobio. Sci. 15(9), 1170 - Morelli M et al. (2021) J. Atmos. Sol-Terr. Phys. 215, 105529 - Young AR, Schalka S et al. (2022) Photoch. Photobio. Sci. 21, 1853 Data Protection & GDPR compliance The siHealth's ExpoDose® solution is fully compliant to the General Data Protection Regulation (GDPR – EU Regulation 2016/679) and to applicable data protection laws. All information collected on users within this solution is subject to dedicated Terms of Use and Privacy Policy. siHealth Ltd is officially registered in the Data Protection Register of the United Kingdom’s Information Commissioner's Office (ICO) with registration number ZA834797.

About

SweatCoach

Features
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Your workouts, your watch, your coach in one app. SweatCoach is a complete strength and cardio tracker with an AI coach built in. Log sets in seconds, run your workout from your wrist, watch live stats in the Dynamic Island and get smarter after every session. TRACK EVERY KIND OF TRAINING • Build workout templates and log sets with weight, reps, duration and distance: barbell lifts, bodyweight, weighted pull-ups, assisted work, carries, planks and more • Smart rest timer that runs on your lock screen • Quick Start an ad-hoc workout any time, no template needed • 200+ exercises built in, plus your own custom exercises APPLE WATCH, DONE PROPERLY • Start, log and finish workouts entirely from your wrist — phone stays in your locker • Outdoor runs, rides, walks and hikes with GPS route maps, heart rate and pace • Live Activity on your lock screen and in the Dynamic Island: current set, rest timer, live cardio stats • Everything syncs to Apple Health automatically YOUR AI COACH • Chat with AI trainers about your training, form, programming and recovery • Generate complete workouts tailored to your goals and equipment • Post-workout insights and session comparisons with SweatCoach Pro SEE YOUR PROGRESS • Personal records tracked automatically: 1RM, best duration, longest distance • Progress charts for every exercise • Weekly reports, streaks, achievements and Sweat Drops to keep you moving • Body measurement logging TRAIN WITH FRIENDS • Add friends, share workouts and follow the community feed FREE FOREVER Logging workouts is free, full stop: unlimited workout sessions, set tracking, rest timers, cardio with GPS, Apple Health sync, progress charts, PRs, streaks and achievements. Free accounts include 3 workout templates, 3 AI coach messages per day and 1 AI-generated workout per week. SWEATCOACH PRO Upgrade for unlimited templates, unlimited AI coaching and unlimited workout generation, plus post-workout comparisons and personalised coach insights after every session. SweatCoach Pro is £7.99/month, billed through your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel any time in your App Store account settings. Privacy Policy: https://sweatcoach.co.uk/privacy-policy Terms of Use: https://sweatcoach.co.uk/terms-of-service SweatCoach is a fitness tracking tool and does not provide medical advice. Consult a qualified professional before starting a new exercise programme.

Screenshots

ExpoDose4 screens
SweatCoach4 screens

Verdict

The call

The clearest difference is in-app purchases: ExpoDose at none against SweatCoach's 2. ExpoDose also leads on iOS requirement (13.4 vs 18.6). SweatCoach's advantage is update cadence (every 11 days vs every 5 weeks). On price, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SweatCoach sells 2 in-app purchases, starting at $7.99 per month. ExpoDose asks for nothing beyond the download.

UpkeepUpdate frequency

ExpoDose ships an update every 5 weeks, SweatCoach every 11 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 3 level
ExpoDose versus SweatCoach: the parameters behind the verdict, then further details
ParameterExpoDoseSweatCoach
PriceFreeFree
Update frequencyEvery 5 weeksEvery 11 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS13.4 — better18.6
Further details — not scored
Size27 MB249 MB
Age rating17+4+
DevelopersiHealth Ltd.Sam Saunders

In-app purchases

None

ExpoDose

No in-app purchases

2 purchases

SweatCoach

Subscriptions2
  • SweatCoach Premium$7.991 Month
  • SweatCoach Premium7 Days trial$49.991 Year

Questions

Is ExpoDose free?
ExpoDose is free to download, with no in-app purchases.
Is SweatCoach free?
SweatCoach is free to download, with in-app purchases available.
Do ExpoDose or SweatCoach have ads?
Neither ExpoDose nor SweatCoach shows ads.
Which is updated more often, ExpoDose or SweatCoach?
ExpoDose ships an update every 5 weeks, and SweatCoach every 11 days. Most recently, ExpoDose was updated on October 25, 2026 and SweatCoach on October 28, 2026.

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