Byens Luft vs Vinterdyp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Byens Luft
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Byens Luft er udviklet til borgere, som er særligt sårbare over for luftforurening – fx børn med visse kroniske sygdomme, gravide, personer med astma, KOL og hjertesygdomme og deres pårørende. Byens Luft viser prognoser for luftkvaliteten i flere kommuner, fire døgn frem. Du kan tilmelde dig varslinger, så du får besked, når niveauet for luftforurening forventes at blive meget højt forskellige steder i byen. Prognoserne bygger på et indeks for luftkvalitet, som DCE – Nationalt Center for Miljø og Energi ved Aarhus Universitet har udviklet. På Byens Luft kan du også se det forventede niveau for fine partikler (PM2,5), grove partikler (PM10), kvælstofdioxid (NO2) og ozon (O3). Og du kan se måledata et døgn tilbage fra de fysiske målestationer.
Vinterdyp
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Vinterdyp is the Danish winter-swimming app — built for the 88,000+ club swimmers and everyone else who loves a cold plunge at the coast, harbor bath, or lake. Log a dip in under 3 taps: record location, water temperature, duration, and mood in seconds. Choose from 60+ well-known Danish swim spots and clubs, or add your own secret favorites. Watch your streak grow on a HabitKit-style cold calendar, colored day by day according to water temperature — from lukewarm blue to icy white. Track your current streak, this season's dips (Oct-Apr), coldest dip, and personal records. Explore swim spots on a map of Denmark — from Helgoland and Den Permanente to Vestre Fjordpark and Sandkås on Bornholm. See which spots have a sauna, and add your own spots to your personal map. Earn 10 fun, Danish-flavored badges: First Dip, Hero of the Week, Under 5 Degrees, Polar Bear, Sauna Lover, Night Owl, Globetrotter, Century, and more. Everything is calculated locally on your phone. Check your current streak and latest water temperature straight from a home screen widget. Vinterdyp Plus unlocks full history, all badges, the widget, and the ability to attach photos to your dips. Safety first: Never swim alone, and know the risks of cold water swimming. Avoid alcohol before bathing, be aware of cold shock, and consult your doctor if you are unsure about your health condition. Vinterdyp is a logging tool and does not replace professional advice about cold-water swimming. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://jsachman.github.io/apps/vinterdyp-privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Byens Luft at none against Vinterdyp's 2. On price, update cadence, 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
Both are free to download. Vinterdyp sells 2 in-app purchases, starting at $1.99 per month. Byens Luft asks for nothing beyond the download.
Byens Luft ships an update fortnightly, Vinterdyp every 2 weeks. Both last shipped on October 14, 2026.
| Parameter | Byens Luft | Vinterdyp |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 39 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Københavns Kommune | Jesper Sachmann |
In-app purchases
Byens Luft
No in-app purchases
Vinterdyp
- Vinterdyp Plus Månedlig$1.991 Month
- Vinterdyp Plus Årlig$17.991 Year









