v3.25.2
Cover - shares
 6 Months Ended
Jun. 30, 2025
Aug. 14, 2025
Cover [Abstract]    
Entity Registrant Name REALPHA TECH CORP.  
Entity Central Index Key 0001859199  
Document Type 10-Q  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Small Business true  
Entity Shell Company false  
Entity Emerging Growth Company true  
Entity Current Reporting Status Yes  
Document Period End Date Jun. 30, 2025  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2025  
Entity Ex Transition Period false  
Entity Common Stock Shares Outstanding   83,775,039
Document Quarterly Report true  
Entity File Number 001-41839  
Entity Incorporation State Country Code DE  
Entity Tax Identification Number 86-3425507  
Entity Address Address Line 1 6515 Longshore Loop  
Entity Address Address Line 2 Suite 100  
Entity Address City Or Town Dublin  
Entity Address State Or Province OH  
Entity Address Postal Zip Code 43017  
City Area Code 707  
Local Phone Number 732-5742  
Document Transition Report false  
Security 12b Title Common Stock  
Trading Symbol AIRE  
Security Exchange Name NASDAQ  
Entity Interactive Data Current Yes  
Entity Incorporation Date Of Incorporation Apr. 22, 2021