iOS App Development Company
FISTA Solutions is an iOS app development company building native apps in Swift and SwiftUI: performant interfaces, offline-capable data layers, secure authentication, App Store compliant privacy handling, and on-device or cloud AI features — delivered with the backend the app depends on.
- 150+
- projects delivered
- 50+
- companies served
- 99.9%
- verified uptime
- 47%
- efficiency gains
- 12+
- countries reached
What we build
What does iOS app development include?
iOS engagements deliver the app and everything it needs to ship: architecture and data layer, native interface work, integrations and authentication, offline behavior, App Store submission assets and privacy declarations, and post-launch monitoring with crash and performance dashboards.
- 01
Native interface engineering
SwiftUI-first interfaces with UIKit where it is still the right tool, tuned for smooth scrolling and fast launch.
UI - 02
Data and offline layer
Local persistence, sync, and conflict handling so the app works on a train and reconciles cleanly afterwards.
Data - 03
Platform integrations
Sign in with Apple, push, widgets, App Intents, HealthKit or MapKit where the product needs them.
Platform - 04
Backend and APIs
The services, storage, and contracts the app depends on, built with the app rather than assumed.
Backend - 05
App Store readiness
Privacy labels, tracking declarations, review notes, and the metadata that keeps submissions moving.
Release - 06
Monitoring and iteration
Crash reporting, performance traces, and analytics wired before launch so the first week is measurable.
Operations
Requirements
Which requirements shape iOS app development?
iOS apps are judged by Apple, by hardware constraints, and by users with high expectations: review guidelines gate release, battery and memory budgets are real, privacy declarations must match actual behavior, and accessibility is expected rather than optional.
| Requirement | Why it matters | How FISTA builds to it |
|---|---|---|
| App Review | Rejections cost weeks, not hours. | Guideline review during design, accurate privacy declarations, review notes with test accounts, and pre-submission checks. |
| Performance budgets | Launch time and scroll smoothness drive retention. | Launch and frame budgets measured on older supported devices, with instruments profiling in the release process. |
| Battery and network | Background work drains devices and trust. | Batched network calls, background task discipline, and measured energy impact on real devices. |
| Privacy | Declarations must match real behavior. | Data inventory per SDK and API, tracking transparency handled correctly, and least-data defaults. |
| Accessibility | VoiceOver and Dynamic Type are expected. | Accessibility acceptance criteria per screen, tested with VoiceOver and large text settings. |
Where AI fits
Where does AI fit in iOS app development?
AI fits iOS apps where it removes typing, understanding, or waiting: on-device capture and classification, summarization of long content, natural-language search, and assistive flows — with cloud models for heavy reasoning and on-device models where privacy or latency demands it.
- 01
On-device intelligence
Vision and speech processing that never leaves the device, ideal for privacy-sensitive or offline features.
- 02
Summarization and extraction
Long documents, threads, or notes condensed into what the user actually needs to act on.
- 03
Natural-language search
Users describe what they want instead of learning your filter taxonomy.
- 04
In-app assistant
A scoped assistant that answers from the user's own data with the same permissions the app enforces.
- 05
Smart capture
Camera and document capture with extraction and validation, removing manual entry entirely.
Cost and timeline
How much does iOS app development cost, and how long does it take?
Cost is driven by feature scope, backend complexity, integrations, and design depth; timeline by App Store review and integration access. FISTA does not quote blind: the scoping call returns an MVP definition, an architecture, and a phased estimate.
Backend work is usually larger than the app itself. The screens are visible, but the APIs, data model, notifications, and admin tooling behind them carry most of the effort, and FISTA scopes them explicitly rather than treating them as implied.
Ongoing cost is real and often ignored. Annual OS releases, device changes, and dependency updates mean an iOS app needs maintenance to keep working. That cadence is planned from the start rather than discovered when the app breaks in September.
Send the scope you have, even if it is a paragraph. You get a written brief, an architecture sketch, and a phased estimate before any commitment.
Get a scoped quoteDelivery
How does FISTA deliver a mobile app?
FISTA delivers apps in four phases: product discovery that produces the MVP specification and clickable flows, architecture for app and backend with the store-compliance checklist, two-week builds demoed on TestFlight and Play internal tracks, and a monitored release with analytics, crash reporting, and a post-launch iteration plan.
- 1
Discover the product
User and business goals, competitive review, feature prioritization, and a written MVP specification with acceptance criteria.
OutputMVP spec, user flows, estimate
- 2
Design app and backend
Platform decision, architecture, data model, API contracts, design system, and the store-compliance checklist.
OutputArchitecture, API contracts, designs
- 3
Build in sprints
Two-week increments shipped to TestFlight and Play internal testing, with automated UI and API tests.
OutputTestable builds every sprint
- 4
Launch and iterate
Store submission, monitoring, crash and analytics dashboards, and a prioritized post-launch backlog.
OutputLive app, dashboards, roadmap
Why FISTA
Why choose FISTA Solutions for iOS app development?
FISTA builds iOS apps with performance budgets enforced on real devices, privacy declarations that match behavior, and the backend delivered as one system with the app. Work is contracted through a US entity with full IP assignment.
iOS specifics
- Launch, frame, and energy budgets are measured on older supported devices, not just the newest hardware.
- Privacy declarations are derived from an actual data inventory per SDK and API, so submissions do not stall on inconsistencies.
- The backend is designed with the app, with contract tests on every API boundary.
- Accessibility with VoiceOver and Dynamic Type is an acceptance criterion on every screen.
How FISTA engineers
- Spec-Driven Development: every deliverable starts as a written specification with acceptance criteria, so scope is testable before it is built.
- AI-native delivery: engineers direct coding agents under review gates and evaluation harnesses, compressing build time without loosening verification.
- Official Anthropic partner, with production experience across Claude, OpenAI, Google, and open-weight models, chosen per workload rather than by default.
- One accountable delivery lead, weekly demos on your environment, and code in your repositories from week one.
What you get as a client
- 150+ projects delivered for 50+ companies across 12+ countries since 2017, with 99.9% verified uptime on systems we operate.
- A US entity (FISTA Solutions Inc., Wilmington, Delaware) for contracting, invoicing, and IP assignment, with an engineering center in Faisalabad, Pakistan for cost-efficient senior capacity.
- US business-hours overlap for standups and reviews; written decision logs so nothing depends on a meeting you missed.
- Flexible engagement: fixed-scope build, embedded forward deployed engineers, or a dedicated team that you can scale month to month.
Clear answers
What app buyers ask before they commit.
Straightforward guidance for evaluating scope, fit, and the next step.
01Should we build native iOS or cross-platform?
Native Swift wins when performance, hardware features, or platform-specific polish matter most; Flutter or React Native win when one team must ship to both stores quickly. FISTA recommends against your roadmap, team, and integrations rather than by default.
02Do you handle App Store submission?
Yes, including privacy labels, tracking declarations, review notes with test accounts, and metadata. Review readiness is designed in during the build, because rejections cost weeks.
03Can the app work offline?
Yes, with a local persistence and sync layer including conflict resolution. Offline behavior is a design decision made early, because retrofitting it into an online-first app is expensive.
04Can you add AI features to an existing iOS app?
Yes, starting with an assessment of the codebase and data model. On-device models suit privacy and latency needs; cloud models handle heavier reasoning, and the choice is recorded with its trade-offs.
05How long does an iOS app take?
A focused MVP typically takes a few months including backend, with App Store review and integration access as common gating items. Discovery produces the scope and phased plan before you commit.
Scoped in writing before you commit
Ship an iOS app that passes review and keeps users.
Bring the product idea or the app that is stalling. The scoping call returns an MVP definition, an architecture, and a phased estimate.