Comparison

SIGNALERT App vs Anavi

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

Head to head
About

SIGNALERT App

Report and monitor natural or man-made disasters, climate change effects, and extreme events. Share observations, receive real-time alerts from other users, and access safety tips and institutional resources.

Highlights
  • Report natural and man-made disasters
  • Crowdmap observations with photos
  • Receive real-time alerts from users
  • Access safety behavior tips
  • Monitor worldwide places of interest
  • Share alerts on social networks
  • Create community monitoring networks
Features
Read full description

SIGNALERT is an information-sharing and crowdmapping application allowing each one of us to report, be warned and monitor the impact of natural or man-made disasters, the effects of climate change, extreme events or crisis that impacts us, our environment, or of which we are witnesses or victims. Locate your observation, take a picture, and answer a few simple questions to describe the intensity level of the phenomenon and its impact. Give your own observations. That's all. Send and share the alert, in return, get a map of observations by other witnesses and App users around you. Natural phenomena to describe are: Earthquake, Cyclone/hurricane/typhoon, Floods, Rockfalls, Landslide, Avalanches, Snowfall, Wildfires, Storm Surge, Tornado, Tsunami, Volcanic Eruption, Heatwave, Drought, High Temperature, Heavy Rainfall, Locust invasion And man-made phenomena: Marine and coastal pollution, Unauthorized dumps, Road/Rail accidents, Fire-Explosion, Air Quality, Troubles and violence, Attack, Health Crisis SIGNALERT allows you to exchange in real time, with other users of the app, the effects of such phenomena, that are just starting and may become dangerous in your field of vision or beyond, from wherever you are in the world. The app also gives you tips about appropriate behaviors for each phenomenon, and will instruct you about how to recognize the intensity level and impact, and offers links to the institutional websites of forecasts, warning or monitoring worldwide. Once sent an alert with the App you can share it on social networks. The paid version is your personal or community warning system nearby: • Choose which worldwide places of interest you want to monitor and automatically receive real-time notifications for any alert sent nearby by other users. • Use the "I am safe" button to report to your loved ones or relatives, that you are not in danger if you are the witness of a disastrous situation. • Receive real-time warning notifications or alerts of flooding on monitored river sections close to your sites of interest (works in France for now, soon in other countries), exceeded temperatures thresholds or extreme rainfall based on open data from internet of things (works better in countries with dense networks of connected objects and may not give any results if no sensor with shared open data in the neighbourhood). Create your own monitoring network between neighbours, and relay the proximity alerts whenever a member of your network detects a potentially harmful phenomenon nearby. When traveling, you can find in the app websites of official national or international institutions in charge of weather and extreme event forecasts, reports and monitoring. The app is available in French, English, Spanish, Arabic and other languages soon. You can change or cancel your subscription (automatic renewal) in settings of your account on the application. The payment is made via your iTunes account. Privacy policy and terms of use : http://content.signalert.net/cgu-fr.html#privacy

About

Anavi

Navigate with offline maps and receive real-time driving safety information directly on your screen. Download maps for use without an internet connection.

Highlights
  • Offline map downloads
  • Offline navigation
  • Synchronized navigation information
  • Driving safety alerts
Features
Read full description

This application has characteristics as below: 1. Support map download and offline navigation. 2. Send the key information of navigation to the screen synchronously for your safty of driving.

Screenshots

SIGNALERT App4 screens
Anavi4 screens

Verdict

The call

The clearest difference is rating: Anavi at 3.0 against SIGNALERT App's 1.0. Anavi also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (11.0 vs 15.0). On price, review sentiment, ratings volume and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Anavi holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

SIGNALERT App ships an update every 2 months, Anavi every 2 weeks. The most recent releases landed on October 22, 2026 and October 18, 2026 respectively.

Scorecard3 real differences · 7 level
SIGNALERT App versus Anavi: the parameters behind the verdict, then further details
ParameterSIGNALERT AppAnavi
PriceFreeFree
Rating1.0 (1 ratings)3.0 (2 ratings) — better
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings12 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size23 MB93 MB
Age rating4+4+
DeveloperSignalert SARL清贤 高

Customer experience

SIGNALERT App

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Anavi

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

SIGNALERT App

No in-app purchases

None

Anavi

No in-app purchases

Questions

Is SIGNALERT App free?
SIGNALERT App is free to download, with no in-app purchases.
Is Anavi free?
Anavi is free to download, with no in-app purchases.
Which has better reviews, SIGNALERT App or Anavi?
Anavi is rated higher. SIGNALERT App averages 1.0 out of 5 from 1 ratings, while Anavi averages 3.0 from 2 ratings.
Do SIGNALERT App or Anavi have ads?
Neither SIGNALERT App nor Anavi shows ads.
Which is updated more often, SIGNALERT App or Anavi?
SIGNALERT App ships an update every 2 months, and Anavi every 2 weeks. Most recently, SIGNALERT App was updated on October 22, 2026 and Anavi on October 18, 2026.

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