Little is still known of the distribution and population trends of most mammals. This free app, created by The Mammal Society, can be used to help address this problem.

Mammal Mapper allows you to record sightings of mammals (or their field signs) along a walked or cycled route in the UK. The app records your route and its duration along with the number and location of animals seen. The app also allows you to collect other valuable information such as how far away and where the animal was in relation to your position. It also allows you to upload images of your sightings, where these are possible.

All terrestrial mammals, except bats, can be recorded and users can set filters if they wish to focus on a sub-set of species that are of particular interest e.g. hedgehog or brown hare. Importantly, the app allows the absence of species to be inferred: this information is critical to the calculation of animal densities and will contribute directly to conservation action.

Mammal Mapper is a sister app to Mammal Tracker, which is designed to record ad-hoc sightings.

What’s New

Version 1.0.1

Improved record submission process
Layout improvements

Ratings and Reviews

JimiM70 ,


Great app and really easy to use too. Now even my walks where I don’t see anything can be useful for science!

Lettys Spraye ,

Some drawbacks.....

This app requires location to be “always on”. So it will be a battery-draining app on the iPhone, not withstanding privacy concerns you may have about this.
Also, at present the app is not designed for static use, it’s only for use when you are out for a walk or a cycle ride etc. If you see a red deer in your garden, this app isn’t suitable to record it. The app developers have another app you can use for this.
It would be helpful if the info in the App Store could include these points.

Developer Response ,

Currently we're investigating whether we can enable the app to use "Whilst Using". At the present time this is very unreliable when the app is put into the background and tracking stops randomly. Additionally, Mammal Mapper is not intended for recording observations from static locations. The app you need for this is Mammal Tracker instead. I hope this helps.

bioseb ,

Constant location is a step too far

Only became clear after downloading that this app demands constant location info - Sorry, but I’m not prepared to do that. A shame for the mammals. It’s perfectly possible to offer a ‘location access whilst using app’ option. - why not? Will now delete.


Natural Apptitude Ltd
106.8 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© Natural Apptitude Ltd 2018


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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