Micro, Small, and Medium Enterprises (MSMEs) in Indonesia often set product
prices manually using cost-plus calculations. While simple, this approach may
overlook packaging costs, platform fees, competitor prices, and profit implications,
resulting in unstructured and less market-responsive pricing decisions. This study
introduces FinanceApp, a prototype AI-based decision support system designed to
assist Indonesian MSMEs in pricing by integrating internal cost components and
competitor price data. A quantitative Research and Development approach was
applied, and the prototype was developed following the Spiral Model. Random
Forest Regression was implemented to produce preliminary price
recommendations. The system was evaluated through model performance testing,
functional testing, and user acceptance testing. The dataset comprised 60 footwear
product records and 48 competitor price records, with 19 rows used for model
training. Model evaluation produced an MAE of 419.78, RMSE of 670.08, and R²
of 0.245, indicating limited predictive generalization but feasibility at the prototype
level. Functional testing confirmed that all major system modules performed as
intended. User acceptance testing with 40 respondents yielded an average score of
4.20 (good), demonstrating positive perceptions of usability and decision-support
value. Findings suggest that FinanceApp provides structured pricing support,
improving data organization, cost visibility, competitor comparison, profit
estimation, and pricing transparency. However, broader datasets, automated
competitor data collection, algorithm comparison, and longitudinal MSME field
testing are recommended before deployment as a production-level pricing tool.