How much the cost of an APP development?

本文探讨了APP开发的成本问题,包括招聘开发人员与外包项目的费用对比。同时,文章还讨论了设计、功能及性能需求如何影响APP开发的价格。
Usually, people don’t understand the process of APP development and they also feel confused. How much the cost of an APP development ? And what's the best price of it? And so does the market price .

1.  the cost of recruiting a developer

Today's (2017) IT industry is booming, so does the demand for software development engineers , which leading to the soaring  wages of engineers all the way . In big cities in China, a fresh graduate IT developer can get a monthly salary of ¥10,000RMB, while a senior developer with 3 years’ work experience can get a basic monthly salary ¥20,000RMB. We presume that a professional IT developer should have at least 3 years’ work experience, and apart from the salary he or she also should consume some welfare and management cost. So, with that, the cost of a professional full-time IT developer should be around ¥30,000RMB. At this moment, the cost is not include your recruit cost. When it comes to this, maybe you feel painful. It is just like the market conditions of real estate, for a software company, it is difficult fro them to make such a decision to recruit a new developer..

2. The cost of outsourcing project 

Outsourcing is divided into two categories, human outsourcing and project outsourcing. Human outsourcing means that the outsourcing company sends a person to your company to work, and you pay the cost of this person to the outsourcing company. At present, the basic price of human outsourcing  is 1,000 yuan per day per person, while a higher and more professional developer costs over 2,000 yuan . However, project outsourcing refers to that the cost depends on how much  a project cost, regardless of how many developers the outsourcing company puts into , which is similar to the construction contractor and singular building worker.  Although the “package price” of a project outsourcing looks reasonable, it is still calculated by the working hours. For example, it is estimated that a project need 2 developer to work for 20 days, and which means to finish the project we have to pay the outsourcing company 40 work volume of wages. Supposed every person ¥1,500RMB /day, which could be a great satisfactory wage, so the project needs ¥6,000RMB. 


Maybe you would think outsourcing costs more than recruit a new developer. Actually, we always ignore the hidden cost, that is to say you will take risks of recruiting a new developer who is unsuitable to develop. However, if you choose an outsourcing company to develop the APP, you could assign projects to developers in the outsourcing company at anytime.You don't need to spare any time to recruit a new developer . Well, it comes to the point that how much the best cost of an APP development.  So, to get a precise quotation, we should figure out the requirements and demands of the APP.Several fiels are as follows:



1. design requirements

A good design is very expensive, because it involves creativity, and it is difficult to  evaluate. Just like whether you ask a professional master to draw a picture or ask an ordinary to do it, which depends on what you focus on. In my opinion, if you ask a designer with rich experience to make a set of UI pieces which follow the latest trends, the finished products usually are not bad. Generally speaking, the cost of an APP UI design is ¥10000 -¥20000 with a high quality. And if you, a recruiter have no specific demands about the design, it will spends several thousands RMB to ask a graduate to finish it. 



2. Functional requirements

I have been asked more than once, "I want to do a similar WeChat APP ... ...", and then I always feel embarrassed . In fact, I suppose that you just want some parts of functions like wechat, such as online chat , you can send pictures, words, voice, and video, or make several people dialogue online together in a group, auto pop-up new message , record chat at sever. You should force yourself to tell the developer your specific functions. You could try your best to tell more, such as the emoji or animation emoji. Actually, the workload is different between non-animation emoji and animation emoji. 

3. Performance requirements

With regard to the performance issues, actually, you don’t need to pay a particular attention to it. Especially, in the early stages of the project at the current level of technological development, the software performance usually works well, but it is necessary to notice. Although you want an app with the same function as wechat, the specific performance is different, so does the workload.  Also taking the wechat as an example, this function of chatting online feature is common, but it is completely different when it comes to supporting  hundreds of millions of users chatting online  like WeChat. The workload of the wechat App development is much larger than a similar simple onlinechat app. After clarifying the above specific functions information, you can find an experienced developer or project manager to give you a definite valuation. It is worth noting that the software development is a very non-standard thing, just like the construction decoration. You should leave a room for the  , otherwise, the decoration workers would only cut corners if you manage a strict budget.  However, there is another way to evaluate the cost that first set the whole budget and then make details of the functions. If you are planning to spend ¥50000 to make an APP with the similar function of chatting, sharing photos and so on. And you should give your specific functions demands to the developers or the project manager, then he will give you a feedback that whether receive your budget of the APP development. If not, you could discuss with him about giving up some unimportant functions such as the emoji function, because it can save some cost. No matter what method you choose, the most important thing is to figure out the requirements and demands of the APP development. So, it is difficult for a developer to answer your question like”how much the cost of the APP development like ---software?” Generally you couldn’t receive a satisfied answer, even if you get the answer from them, it is an unreasonable unresponsive reply. However, it could be a convenient way to choose a target customer.





内容概要:本文围绕EKF SLAM(扩展卡尔曼滤波同步定位与地图构建)的性能展开多项对比实验研究,重点分析在稀疏与稠密landmark环境下、预测与更新步骤同时进行与非同时进行的情况下的系统性能差异,并进一步探讨EKF SLAM在有色噪声干扰下的鲁棒性表现。实验考虑了不确定性因素的影响,旨在评估不同条件下算法的定位精度与地图构建质量,为实际应用中EKF SLAM的优化提供依据。文档还提及多智能体系统在遭受DoS攻击下的弹性控制研究,但核心内容聚焦于SLAM算法的性能测试与分析。; 适合人群:具备一定机器人学、状态估计或自动驾驶基础知识的科研人员及工程技术人员,尤其是从事SLAM算法研究或应用开发的硕士、博士研究生和相关领域研发人员。; 使用场景及目标:①用于比较EKF SLAM在不同landmark密度下的性能表现;②分析预测与更新机制同步与否对滤波器稳定性与精度的影响;③评估系统在有色噪声等非理想观测条件下的适应能力,提升实际部署中的可靠性。; 阅读建议:建议结合MATLAB仿真代码进行实验复现,重点关注状态协方差传播、观测更新频率与噪声模型设置等关键环节,深入理解EKF SLAM在复杂环境下的行为特性。稀疏 landmark 与稠密 landmark 下 EKF SLAM 性能对比实验,预测更新同时进行与非同时进行对比 EKF SLAM 性能对比实验,EKF SLAM 在有色噪声下性能实验
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