Why estimates for the same idea differ so much
Ask five vendors to price the same app and you may get five numbers that differ by a factor of three or more. That is rarely because someone is dishonest. Each vendor makes different assumptions about scope, quality, risk and who does what — and most of those assumptions are invisible in a one-page proposal.
The most useful thing you can do before comparing prices is to make those assumptions explicit. A short written brief that lists users, core workflows, integrations and non-functional requirements (security, performance, availability) will narrow the range far more than any negotiation.
The main cost drivers
Software cost is effort multiplied by rate. Effort is driven by the following factors, roughly in order of impact:
- Scope and complexity — the number of user roles, screens, workflows and business rules.
- Integrations — every external system (payments, ERP, CRM, identity provider) adds design, development and testing effort, and often waiting time for credentials and sandboxes.
- Platforms — a web app, an iOS app and an Android app are three surfaces to design, build and test, even with cross-platform frameworks.
- Non-functional requirements — compliance, audit trails, high availability, accessibility and performance targets add real engineering work.
- Data migration — moving and cleaning data from legacy systems is consistently underestimated.
- Uncertainty — the less is known up front, the more buffer a responsible vendor must include.
Rate depends on seniority, location and engagement model. Senior engineers cost more per hour but usually less per feature, because they make fewer wrong turns and need less supervision.
Typical budget ranges by project type
Every project is different, but the ranges below reflect the order of magnitude we see for professionally built software with a senior, distributed team. Treat them as a starting point for conversation, not a quote.
| Project type | Typical duration | Indicative budget |
|---|---|---|
| Clickable prototype / discovery | 2–6 weeks | $10k – $40k |
| MVP web or mobile app | 2–4 months | $40k – $120k |
| Customer portal with integrations | 4–8 months | $100k – $300k |
| Enterprise platform / SaaS product | 9+ months | $300k and up |
The largest variable inside each range is integrations and compliance. A portal that only reads data is far cheaper than one that writes back into three systems and must pass an external security audit.
How the engagement model changes the price
Fixed price
You pay an agreed amount for an agreed scope. It suits small, well-specified projects. The vendor carries the estimation risk, so expect a buffer — and a formal change-request process when the scope moves.
Time and material
You pay for the hours actually worked, usually with a monthly cap. It suits products where requirements will evolve. You carry more budget risk but gain flexibility and typically pay less overall because no risk premium is built in.
Dedicated team
You reserve a team for a monthly fee and direct its priorities. It suits long-running products and companies that want the benefits of an in-house team without the hiring effort. Cost is predictable per month; total cost depends on how long you keep the team.
Hidden costs to plan for
- Cloud hosting, monitoring and third-party SaaS subscriptions (maps, email, SMS, analytics).
- App Store and Google Play developer accounts and review cycles.
- Security testing and, for regulated industries, external audits.
- Support and maintenance after launch — commonly 15–25% of the initial build cost per year.
- Your own team’s time for workshops, reviews, testing and decisions.
How to reduce cost without cutting quality
- Start with a discovery phase. Two to six weeks of analysis and prototyping removes the uncertainty that inflates estimates.
- Prioritize ruthlessly. Launch with the workflows that create value on day one and keep a backlog for the rest.
- Use proven building blocks. Authentication, payments and notifications should be integrated, not invented.
- Choose a cross-platform framework when native performance is not essential.
- Keep one stable team. Every change of team costs weeks of knowledge transfer.
Cheap estimates that skip testing, documentation or security are not savings; they are deferred costs with interest. The goal is the lowest total cost of ownership, not the lowest first invoice.
Frequently asked questions
Can I get a fixed price for my project?
Yes, once the scope is defined well enough — usually after a short discovery phase. For evolving products, a time-and-material or dedicated-team model is often more economical.
Why is maintenance a recurring cost?
Operating systems, browsers, libraries and security threats change constantly. Without regular updates, software becomes insecure and harder to change.
Is offshore development always cheaper?
Hourly rates are lower, but total cost depends on seniority, communication and quality. A senior distributed team with good process usually beats a cheaper team that needs heavy supervision.
