TN vs SACHET
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TN
Receive timely weather alerts and advisories for specific areas based on forecasts. This app provides different sound notifications for various alert levels and can override silent mode for emergencies. Users can also submit feedback on flood risk alerts.
- Multi-hazard impact assessment
- Weather forecast integration
- Disseminates alerts and advisories
- Customizable sound alerts for push notifications
- Flood risk alerts with user feedback
- Emergency alert override for silent mode
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TN SMART (TamilNadu System for Multi-hazard potential impact Assessment and emergency Response Tracking) is a web-based system to utilize weather forecast products to assess potential impacts, and evaluate and disseminate impact management options with a robust data management system for managing and processing weather, disaster risk and emergency response resources data. The system shall disseminate alerts and advisories to registered users through this app designed to inform specific target areas based on early warning priorities. App gives different sound alerts for push notification to varied level of weather alerts. User gets flood risk alerts based on the forecast of their location and can submit the feedback on it to back the system. Important : This app will override the ringtone and sound settings of your mobile. So that when emergency alert is sent even though the mobile is in Silent mode it changes to Ringing mode and gives the sound.
SACHET
Receive real-time, geo-targeted disaster alerts and weather forecasts from official government sources. Access vital resources like helpline numbers and safety guidelines in multiple Indian languages.
- Real-time geo-targeted disaster alerts
- Weather reports and forecasts
- Official government warnings
- Helpline numbers and resources
- Multi-language support with read-out
- Satellite receiver connectivity
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SACHET, is a disaster early warning platform envisioned by the National Disaster Management Authority (NDMA) to provide real-time geo-targeted alerts to citizens. Users can receive alerts for their current location or subscribe any state / district in India to receive alert notifications. The SACHET mobile app provides warning from authorized Government sources and authorities to warn the public of a possible disaster situation. Furthermore, the app provides weather report and forecast from Indian Meteorological Department (IMD) for day to day weather updates. The app also provides various useful resources such as Dos & Don’ts, helpline numbers, alert effected area and satellite receiver connectivity feature. The app can be used in 12 Indian languages with translation and read out facility.
Screenshots
Verdict
The clearest difference is update cadence: SACHET at every 10 days against TN's every 11 months. SACHET also leads on review sentiment (56% vs 33%). On price, ads, in-app purchases and monetization model 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.
TN ships an update every 11 months, SACHET every 10 days. Both last shipped on October 25, 2026.
| Parameter | TN | SACHET |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Positive reviews | 33.3% of reviews | 56.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 11 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 199 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Rimes | CDOT |
Customer experience
TN
SACHET
In-app purchases
TN
No in-app purchases
SACHET
No in-app purchases









