The Cryptic Crystals app is on sale at the Apple and Google app stores and 10 per cent of all sales will be gifted to the Alzheimer Society. A further 10 per cent will be given as a prize to the first person to complete the most difficult level of the puzzle.
Edwards said that another grower, North Perrott Fruit Farm partner Jonathan Hoskyns had been at the top of the leader board at one point.
There are 33 levels in all, only one level is made available each day and then only if someone has completed the previous level.
Edwards said: "Hopefully, excitement will build over the month or so it will take for someone to complete the puzzle, Apps will sell well, the prize fund will grow, the Alzheimer Society will get lots of money and I’ll get back the money I’ve spent developing it and some!"