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How much does mobile app cost? The answer is mostly: "It depends..." If you are looking for exact time and development cost values without blurred explanations - you made the right choice. Sometimes it takes to much time to make an estimation because don't have an idea what features should be implemented and the question that worries the most of all: do I have enough budget to develop an app? And with estimation app you will not exactly all the answers. https://play.google.com/store/apps/details?id=com.thinkmobiles.estimateapp