Vendar
AI vendor intelligence
DevelopmentMobile DevelopmentCross-platform App Development
Mobile Development Specialization Hub

Cross-platform App Development Companies and Developers

Mobile apps delivered for iOS and Android from a shared codebase. Use this specialization hub to understand scope, proposal checks, and live city folders before comparing vendors.

67 vendors4 city foldersMobile Development
Updated June 2026·67 companies evaluated·Ranked by proof depth, pricing visibility & build specialization
Los AngelesNew YorkChicagoMiami
WITHIN logo
31
Official Sources

WITHIN

New York, NY, USAagencyTeam 50-199

Development provider tracked for mobile development fit, proof signals, pricing clarity, and delivery confidence.

Direct Mobile Development fit
Shows relevant development delivery signals, with moderate proof and clearer commercial signals.
Mobile DevelopmentCross-platform App DevelopmentAPI Development+5Mobile Development proofMarket coveragePricing disclosed2 case studies
Verified Jun 2026
69/100
AverageBelow avg
Build Fit
Direct build
Proof
Moderate proof
From $12K/mo
Program scope can be broader than a narrow paid-search-only brief.
View profileCompare
Straight North logo
32
Verified

Straight North

Chicago, IL, USAagencyTeam 10-49

Chicago performance agency combining paid media, conversion-focused websites, and lead-generation systems for predictable growth.

Direct Mobile Development fit
Shows relevant development delivery signals, with strong proof and clearer commercial signals.
Mobile DevelopmentCross-platform App DevelopmentAndroid App DevelopmentMobile Development proofMarket coveragePricing disclosed6 case studies3 named clients
Verified Jun 2026
97/100
ExcellentTop 5%
Build Fit
Direct build
Proof
Strong proof
From $5K/mo
View profileCompare
Digital Authority Partners logo
33
VerifiedOfficial Sources

Digital Authority Partners

Chicago, IL, USAagencyTeam 10-49

Chicago growth agency pairing paid media, landing-page optimization, analytics, and broader digital strategy for measurable customer acquisition.

Direct Mobile Development fit
Shows relevant development delivery signals, with strong proof and clearer commercial signals.
Landing Page OptimizationMobile DevelopmentCross-platform App DevelopmentAndroid App DevelopmentMobile Development proofMarket coveragePricing disclosed5 case studies
Verified Jun 2026
92/100
ExcellentTop 5%
Build Fit
Direct build
Proof
Strong proof
From $6K/mo
View profileCompare
OneIMS logo
34
VerifiedOfficial Sources

OneIMS

Chicago, IL, USAagencyTeam 10-49

Development provider tracked for mobile development fit, proof signals, pricing clarity, and delivery confidence.

Direct Mobile Development fit
Shows relevant development delivery signals, with strong proof and clearer commercial signals.
Mobile DevelopmentCross-platform App DevelopmentAndroid App DevelopmentMobile Development proofMarket coveragePricing disclosed6 case studies
Verified Jun 2026
92/100
ExcellentTop 5%
Build Fit
Direct build
Proof
Strong proof
From $5K/mo
View profileCompare
Decographic logo
35
Verified

Decographic

Doral, FL, USAagencyTeam 10-49

Doral and Miami-area agency with SEO, content, and website systems for smaller brands that need measurable lead growth.

Direct Mobile Development fit
Shows relevant development delivery signals, with strong proof and clearer commercial signals.
Landing Page OptimizationMobile DevelopmentCross-platform App DevelopmentAndroid App DevelopmentMobile Development proofMarket coveragePricing disclosed8 case studies6 named clients
Verified Jun 2026
85/100
ExcellentTop 15%
Build Fit
Direct build
Proof
Strong proof
From $3K/mo
View profileCompare
The Miami SEO Company logo
36
Official Sources

The Miami SEO Company

Miami, FL, USAagencyTeam 10-49

Development provider tracked for mobile development fit, proof signals, pricing clarity, and delivery confidence.

Direct Mobile Development fit
Shows relevant development delivery signals, with strong proof and clearer commercial signals.
Landing Page OptimizationMobile DevelopmentCross-platform App DevelopmentAPI DevelopmentMobile Development proofMarket coveragePricing disclosed5 case studies
Verified Jun 2026
78/100
GoodTop 30%
Build Fit
Direct build
Proof
Strong proof
From $3K/mo
View profileCompare
Hawke Media logo
37
Official Sources

Hawke Media

Santa Monica, CA, USAagencyTeam 50-199

Development provider tracked for mobile development fit, proof signals, pricing clarity, and delivery confidence.

Direct Mobile Development fit
Shows relevant development delivery signals, with strong proof and clearer commercial signals.
Mobile DevelopmentCross-platform App DevelopmentConversion-focused Web Development+5Mobile Development proofMarket coveragePricing disclosed24 case studies19 named clients
Verified Jun 2026
73/100
GoodTop 45%
Build Fit
Direct build
Proof
Strong proof
From $7K/mo
Exact scope, staffing, and reporting should still be validated during outreach.
View profileCompare
Voy Media logo
38
Official Sources

Voy Media

New York, NY, USAagencyTeam 10-49

New York paid social agency focused on Meta ads, creative testing, remarketing, and ecommerce growth.

Direct Mobile Development fit
Shows relevant development delivery signals, with strong proof and clearer commercial signals.
EcommerceMobile DevelopmentCross-platform App DevelopmentMobile Backend and API Integration+1Mobile Development proofMarket coveragePricing disclosed4 case studies2 named clients
Verified Jun 2026
70/100
GoodTop 45%
Build Fit
Direct build
Proof
Strong proof
From $7K/mo
Channel strength is concentrated in paid social and remarketing.
View profileCompare
120/80 logo
39
VerifiedOfficial Sources

120/80

Chicago, IL, USAagencyTeam 10-49

Development provider tracked for mobile development fit, proof signals, pricing clarity, and delivery confidence.

Direct Mobile Development fit
Shows relevant development delivery signals, with strong proof and clearer commercial signals.
Landing Page OptimizationMobile DevelopmentCross-platform App DevelopmentMobile Backend and API Integration+1Mobile Development proofMarket coveragePricing disclosed9 case studies5 named clients
Verified Jun 2026
70/100
GoodTop 45%
Build Fit
Direct build
Proof
Strong proof
From $1K/mo
Commercial scope still benefits from direct outreach validation before shortlisting.
View profileCompare
Digital Drew SEM logo
40
Verified

Digital Drew SEM

New York, NY, USAagencyTeam 10-49

Development provider tracked for mobile development fit, proof signals, pricing clarity, and delivery confidence.

Direct Mobile Development fit
Shows relevant development delivery signals, with strong proof and clearer commercial signals.
Mobile DevelopmentCross-platform App DevelopmentMobile Backend and API Integration+2Mobile Development proofMarket coveragePricing disclosed10 case studies10 named clients
Verified Jun 2026
70/100
GoodTop 45%
Build Fit
Direct build
Proof
Strong proof
From $2K/mo
Best fit narrows toward founder-led, local, and growth-minded SMB buyers.
View profileCompare
Previous1234567Next
How we rank these companies
Proof depth
Case studies, named clients, and verifiable source citations from official channels.
Pricing visibility
Disclosed project floors, retainer ranges, or hourly rates - not just 'contact us'.
Specialization fit
Service match for this specific build type, not just broad development presence.
Delivery confidence
Team size, engagement model, and process signals tied to similar scopes.
Confidence score
Data completeness and profile freshness - incomplete profiles rank lower.

Scores are calculated automatically from structured data. No paid placement affects ranking position.

Implementation checklist for cross-platform app development
Cross-platform App Development scope and buyer-fit diagnosis
Architecture, integration, and ownership boundaries
Visible proof across similar builds, case studies, and source signals
Budget, timeline, staffing, and communication model comparison
Launch, QA, handoff, and support plan before vendor outreach
How to read a cross-platform app development proposal
Ask for two recent cross-platform app development examples with role, stack, and outcome.
Confirm who owns technical discovery, architecture decisions, and production handoff.
Require a staged delivery plan with milestones, acceptance criteria, and QA gates.
Compare maintenance, observability, documentation, and post-launch support before price.

Related Mobile Development specializations

iOS App DevelopmentAndroid App DevelopmentReact Native DevelopmentFlutter DevelopmentMobile MVP DevelopmentMobile App ModernizationMobile App Maintenance and SupportMobile Backend and API Integration

Frequently asked questions

What is Cross-platform App Development?

Cross-platform App Development is a more specific Mobile Development buying path. Use it when the broad service category is too general and you need vendors with visible proof around this exact build type.

Should I start from this hub or a city folder?

Start from this hub to understand scope, proposal checks, and related folders. Open a city folder when you want ranked vendor cards for a specific market.

Why are some city folders still marked in verification?

Vendar keeps the URL structure stable while vendor coverage is being filled. A folder can be useful for routing and buyer intent before enough verified profiles are ready for ranking output.

Not sure which specialization fits?

Use the recommendation flow to describe your project and get a matched shortlist.

Get a personalised match