Just buy the gems it dosent use much money
Or you must just keep gliching your screen by taping and taping and taping the plus by the amount of gems you have then keep doing that till it gives you at lest 500 gems.
When you buy something in the shop and you need to get gems, click the add gems where the plus is next to the amount of gems you have. Then cancel then do that 2 more times. After that go to the shop buy something and click the gems and you get free gems.
Clash of clan
There are no official cheats for Clash of Clans. There are people who try to hack or exploit the game in order to get free Gems, but Supercell are relatively generous in that department anyway, as they reward you with Gems for cleaning up obstacles in your base and for completing Achievements.
Furthermore, anyone offering you a download or Gems in exchange for your username or password are probably trying to get personal details from you and you should refuse to give them out. The developers work hard for a balanced game, and anyone getting free Gems compromises that - the best idea is to learn how to beat the game using your own tactics that no one else knows about, then you'll have a real advantage!
If you have a little bit of time left on something upgrading and you put it on an invalid spot it will finish there and you will have more space for other stuff.
How to save your elixer when your offline
To be able to save your elixer where people won't get that much elixer. Just make sure your camps are full and then fill your barracks up with bombers then you can get offline with like only 100,000 elixer instead of 300,000 elixer. Get back on, then unload your barracks first thing and then you will get all of your elixer back.
This cheat only works when you have less than 30 seconds from finishing a troop upgrade an a full army. About before thirty seconds,cue up the troop you are upgrading. Don't forget before you do this you have to make sure you have a full army. After, the upgrade finished untrain the troops. Now, you will get free Elixir!
Unfortunately, there are no cheats for this game, don't waste your time looking. Unless you want to ruin your device with spammy downloads. Then go right ahead.
Join a Clan - Once the clan castle is rebuilt you can officially join a clan and battle to win more goodies against other users.
More Clan People - In order to invite your Facebook or Game Center friends, your friend must first play Clash of Clans, connect to Game Center or Facebook with their account and have rebuilt their Clan Castle. After this, you can see your friend in the Friends menu, where you can tap their name and choose Invite from the context menu. Inviting from global chat works in a similar way: tap a player's message, and choose Invite from the context menu.
Shield - The Shield prevents other people from attacking you for a period of time. You lose the shield when the time runs out, or when you attack another player. When your village is destroyed by an enemy attack, you automatically get a new shield for 12 hours. You can also purchase longer lasting shields from the shop. Also keep in mind that if you do not have an active shield and you exit the game, your village will be vulnerable to attacks from other players. The attacking player will be able to steal some of your resources, but never all of them. You can protect your village with defensive buildings, walls and traps, or by buying a new shield form the shop. Terrain obstacles and the edge of the map do not stop attacking units!
Smart Building - When you build your village, build all your structures close together. It gives you an edge in defending your villages. If your village is compact, your turrets will be able to defend more buildings at once.
Move and Make - One of the coolest features in this game is the ability move buildings, thus re-arranging your vilage, after you have made it. Use it make the best possible defense for your village.
Gems - Save your gems for important purchases. Early on it will be tempting to use gems left and right to hurry up the process of building and training. This only gets "worse" over time as things take longer and longer to complete. The game is designed to play on your impatience and get you to buy more gems (with real money). While you can get more gems by clearing your area (trees, rocks, etc.), it's only a few at a time. Hang on to your gems.
Quick tips on gaming: Set up a mortar for really effective firepower - it packs a massive punch.
A really highly upgraded cannon is a deadly thing, but make sure you keep it protected from aerial attacks with a tower.
Don't bother waiting for troops to destroy walls - blow them up instead. It's quicker and you won't waste unnecessary numbers of troops doing so.