POS Software Development Company

Developing a point of sale system entails costs that vary by business scale. For small businesses or a single retail store, cloud-based POS systems are the gold standard due to their low entry point. In this case, the hardware and software setup usually ranges from $800 to $2,500. These systems operate on a subscription model, usually costing $50-$150 per month, and offer real-time access to business data from any store or back office.

For complex needs, a development company can build POS systems from scratch for $15,000 to $100,000+. However, these figures are indicative rather than fixed.

Custom POS services are ideal for managing multiple locations or integrating specialized self-service kiosks. These high-end custom POS solutions offer superior sales tracking, sophisticated loyalty programs, and advanced sales reporting that off-the-shelf software may lack.

A POS app captures the sale on a terminal, tablet or kiosk: it builds the order, calculates price and tax, and sends the payment to the terminal or gateway for authorization. Card data is encrypted at the reader and tokenized, so the app handles a token instead of the card number. Once the payment is approved, the POS records the transaction, updates inventory and syncs order data and customer details with ERP, CRM and accounting systems, queuing updates when the network is down.

Timeline depends on scope, hardware certification requirements, and integration complexity. 

• A mobile POS application for iOS/Android without hardware certification can be delivered in 8-16 weeks. 
• A full hardware terminal POS system (custom Android application for a physical terminal like Poynt, Dejavoo, or Newland) adds 6-12 weeks for hardware manufacturer certification and payment network certification on top of development time. 
• A complete omnichannel POS platform with ERP, CRM, inventory, and multi-location support typically takes 6-12 months. 

SPD Technology delivered the Poynt all-in-one POS platform in just 5 months.

Off-the-shelf platforms (Square, Toast, Lightspeed, Clover) are the right choice when your business has standard workflows and standard transaction volumes. Custom POS development becomes the correct choice when: 

1. you need to integrate with specific hardware that off-the-shelf platforms do not support; 
2. your transaction volume or architecture requires capabilities beyond what packaged software provides; 
3. you have proprietary business logic, compliance requirements, or integrations that standard APIs cannot accommodate; 
4. the long-term per-transaction cost of a subscription platform exceeds the cost of owning your own system. 

Industries with non-standard transaction flows, specific hardware requirements, or regulatory obligations that generic POS platforms cannot meet: 

• Restaurant and food service (table management, kitchen display integration, tip handling); 
• Hospitality and hotels (PMS integration, room-charge posting, deferred billing); 
• Healthcare and pharmacy (HIPAA-compliant payment handling, FSA/HSA card acceptance, co-pay processing); 
• Insurance and financial services (ACH payment workflows, configurable billing, compliance audit trails); 
• Marketplaces and payment facilitators (split payment routing, sub-merchant onboarding, per-merchant PCI DSS compliance). 

Five criteria to evaluate: 

• Hardware experience: has the POS development company built software for the specific terminal hardware you plan to use? Companies that can only deliver software for emulated environments are not the same as those that have certified software on physical terminals. 
• Payment compliance credentials: Adyen partner status, PCI DSS QSA relationships, and card network certification experience are concrete verifiable credentials. 
• Transaction volume delivered: ask for production volumes and peak loads the vendor has supported, with a reference. 
• Integration complexity handled: ERP, multi-location inventory, loyalty programs, and omnichannel data flows each add complexity that not all vendors handle well. 
• Long-term maintenance model: POS systems require ongoing maintenance as standards evolve; verify the vendor’s ongoing support track record.

PCI DSS compliance for POS systems depends on the integration method and how cardholder data flows through the system. 

Attended retail POS with card-present transactions typically falls under SAQ B-IP (for payment terminals with no electronic cardholder data storage) or SAQ C (for POS applications connected to the internet). 

Custom POS development requires PCI DSS scope to be defined before architecture decisions are made: using tokenization and P2PE (Point-to-Point Encryption) can significantly reduce the number of systems in scope, lowering compliance cost and complexity. If the application is sold to multiple merchants, it can be validated under the PCI Secure Software Standard, which replaced PA-DSS (Payment Application Data Security Standard) after the PCI SSC retired it in 2022.