Flow vs AnyTimer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flow
This app visualizes air quality data collected by a personal sensor. It helps users understand their exposure to pollutants like PM2.5, PM10, NO2, and VOCs, offering insights to find cleaner air routes and identify pollution hotspots.
- Real-time pollution tracking (PM2.5, PM10, NO2, VOCs)
- Personal exposure reports
- Air Quality Index (AQI) monitoring
- Clean air route finding
- Pollution hotspot identification
- Daily and live data analysis
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!! -- You must have Flow, the personal air pollution sensor from Plume Labs, to use this app. For more information, please visit flow.plumelabs.com. -- !! !! -- Looking for our free air quality forecasting app? Search for ‘Plume Air Report’ on the App Store or visit air.plumelabs.com. -- !! *Escape pollution and dodge the smog!* The Flow companion app from Plume Labs collects and analyses the data taken from your Flow’s PM2.5, PM10, NO2 and VOC sensors and gives you beautiful, easy-to-read reports, maps, and graphs. *Ever feel trapped by air pollution?* Air quality, AQI index, smog levels: with Flow, you can find the best clean air commute, hunt down fresh air playgrounds, eliminate chemical hotspots in your home, and that’s just the beginning. *Did you know?* Wind and weather, humidity and heat, atmospheric pressure, and many other factors create clean air pockets in urban environments. In fact, air pollution levels change up to 8X from street to street in the city, and even more from room to room indoors! Flow gives you the information you need to stay healthy at home or on the go. *Stop guessing and start sensing!* A new study from top researchers at King’s College in London shows that, with good data, you can reduce your exposure to air pollution by as much as 50% by making small changes to your routine. ***Key Features*** Track your personal pollution exposure with live data and daily reports: Flow measures real-time concentrations of PM2.5, PM10, NO2 and VOCs, as well as the AQI air quality level to give you everything you need to understand your exposure and build healthy routines. Avoid the most polluted places: Flow tracks air pollution variations around you in real time, so you can find clean air. Flow fits seamlessly into your daily life: Whether you're cycling, running, out in the park with the kids, or relaxing at home. ***Flow in the press*** “I hope many people living in polluted cities will end up using Flow.” —Techcrunch
AnyTimer
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Simply set your rest time workout time and start burning those calories while this app will support you to create audio cues to stop or start your high intensity interval training.
Screenshots
Verdict
The clearest difference is update cadence: AnyTimer at every 9 days against Flow's monthly. AnyTimer also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Flow ships an update monthly, AnyTimer every 9 days. Both last shipped on October 7, 2026.
| Parameter | Flow | AnyTimer |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (27 ratings) — better | — |
| Positive reviews | 19.0% of reviews | — |
| Number of ratings | 27 — better | — |
| Update frequency | Monthly | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 69 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Plume Labs | Harish Kumar |
In-app purchases
Flow
No in-app purchases
AnyTimer
No in-app purchases









