A woman who chartered her own weightloss success with body selfies found it so beneficial, she launched an app offering others the chance to do the same thing. Charlotte Li, 26, from London, decided to design Healthy Selfie with her husband Joe after they both achieved incredible results taking photos of their bodies while on a health kick. She said the idea for it came after an over-indulgent Christmas left her feeling ‘fat and unhealthy’. Scroll down for video . Charlotte reveals how taking selfies helped her to stay motivated to get fit and stay in shape . Charlotte said: 'With no holidays on the horizon and hence no impending bikini body exposure to panic about, we needed something else to give us some motivation to get in the gym. 'That motivation came in the form of stripping down to my bra and pants, and taking my first body selfie. 'I was by no means overweight, however, by looking at my body objectively, I wasn’t happy with what I saw and I decided I needed to make a change. 'I started a new fitness programme, and started eating reasonably healthily.’ Joe also charted his own success through a series of selfies before he and Charlotte decided to launch Healthy Selfie. Charlotte continued to take photos each week and would compare them to see how far she had come. She said: 'At the end of a six-week period, I compared the images with the help of Joe’s Photoshop expertise. 'The results were incredible – my body had completely changed – all in complete contradiction to the number on the scales - which had risen as I gained more muscle.' Charlotte and Joe (right) launched  the app after taking selfies  following an an indulgent Christmas . Joe charted his own success through a series of selfies before he and Charlotte decided to launch the app . Charlotte said: 'This was where the idea for Healthy Selfie was born. We wanted to create an app that made tracking and comparing your selfies a quick and easy process. 'By then publishing those photos in a social networking environment, the images become so much more than a self-tracking tool – they become a source of information from which other users can glean ideas and inspiration. 'Your images become testaments to the efficacy of whatever programme, diet, detox or cleanse you’re pursuing.' Charlotte says the app also provides a safe and supportive community for you to upload your pictures too, with users using the comments section to encourage each other on their journeys. Two people who have used the app said it helped them to overcome their own body issues. A student who was told he would never have a six-pack finally achieved his dream. When Harry was at college (left) he was told by his friends that he would never achieve a six pack, now he shows off his super fit body on Healthy Selfie (right) Harry's profile on Healthy Selfie shows how he is getting fitter week by week . Harry Kersley, 20, student: . Harry Kersley, 20, said he used to receive harsh criticism from the other boys at his college but is now proud of his body. Harry was told about the app by a friend at the gym. He said: 'I lacked confidence throughout school at Epsom College. 'The initial reason for starting my transformation was to improve strength as well as fitness for sport. 'However I received harsh “banter” from my peers at school and I recall one friend saying I will never get a six pack. I allowed this to fuel my determination to this day.' Harry says using the app he charted his progress: 'It's given me a great confidence boost, and yes, I definitely feel encouraged to continue posting progress pics. 'If you ever start doubting your progress; looking at old photos make you realise just how much your physique has improved. 'No one expects to become Arnold Schwarzenegger overnight, but the small incremental changes that you don’t notice from just looking in the mirror every day, is what kept me motivated to continue. 'You can't see how much you've progressed if you don't keep a record. I'm now using Healthy Selfie to track my aesthetic progression, and have seen drastic changes in my muscle definition and fat loss. ‘I feel great and definitely in the best physical condition of my life.' Anonymous, 17 . This anonymous anorexia sufferer used Healthy Selfie to chart her recovery process, posting selfies as she regained weight and muscle . A 17-year-old woman – who didn’t want to be named – revealed the app helped her fight anorexia, which started at 14, including helping her to regain weight and muscle. She said: 'I really got into healthy eating because I wanted to lose weight. 'My friend was a synchronised swimmer and she was so toned, I wanted to look just like her. ‘I joined a fitness club at school, got quite strong and pretty toned; I looked good. 'But it became obsessive: my “healthy” eating got so restrictive I was living off salads and fruit. I exercised every day, to the point of collapsing. ‘I ate less and less, thinking that was the key to being healthy, but I was so wrong. 'It took time for the weight to come off, and these habits continued on until I was 16. The user posted pictures of herself in the gym as she trained  to regain a healthy body with tone and muscle . 'I was diagnosed with anorexia. That really shocked me, because I didn’t feel like anything was wrong with me.' The user posted pictures of herself in the gym as she trained hard to regain a healthy body with tone and muscle . She revealed: 'I thought about what I wanted to be like before my eating disorder took a hold of me. I wanted to be strong and muscular, toned and fit.’ She started charting her transformation on Instagram but moved over the Healthy Selfie when it launched in January. She said: 'I think selfies are a great idea, especially for people with eating disorders. 'It allows you to see how much healthier you are. Not just in your body, but your face is filled out again, your eyes actually have a sparkle in them, your smile is real.’
Charlotte Li started taking selfies after feeling 'unhealthy' after Christmas .
Helped motivate her to see her body becoming toned .
Launched Healthy Selfie with husband Joe who also saw results .