Mobile App Development: 4 global agencies to consider
Four global Mobile App Development agencies: TELUS Digital, Fueled, Netguru, thoughtbot. Sources linked, no paid placement, and the order is not a ranking.
Agencies shortlisted for building iOS, Android and cross-platform apps.
| Agency | HQ | Best for |
|---|---|---|
| TELUS Digital (formerly WillowTree) | TELUS Digital; the mobile practice (WillowTree) is based in Charlottesville, Virginia | Enterprise consumer apps with demanding experience and integration needs. |
| Fueled | New York, USA (third-party directories); distributed team | Apps where interaction design and visual execution are major differentiators. |
| Netguru | Poznan, Poland | Businesses evaluating native, Flutter and React Native approaches. |
| thoughtbot | Boston, USA (third-party); distributed team | New mobile products needing discovery and validation alongside the build. |
Shortlisted
TELUS Digital (formerly WillowTree)
Best for: Enterprise consumer apps with demanding experience and integration needs.
Established mobile and digital product practice with clients including Marriott, Charles Schwab and PepsiCo.
In this category:
- Mobile and digital product practice for enterprise clients (Marriott, Charles Schwab, PepsiCo)
- Consumer apps with demanding experience and integration needs
HQTELUS Digital; the mobile practice (WillowTree) is based in Charlottesville, Virginia
FoundedWillowTree founded 2007-2008; acquired by TELUS International (deal announced Oct 2022)
TeamWillowTree: 1,000+ employees at the 2022 deal (press)
Named clients600+ clients, including Marriott, Charles Schwab, PepsiCo, Airbnb, Google, Microsoft
Partners & badgesAWS, Google, Microsoft Azure, Salesforce and others listed as partners
Services
Best at
- Mobile and digital product practice for enterprise clients (Marriott, Charles Schwab, PepsiCo)
- Consumer apps with demanding experience and integration needs
Also offers
- Customer experience services
- Trust and safety
- AI data services
Source: capability pageFacts from the company’s own website and public sources, checked 16 Oct 2026. Not a ranking.
Shortlisted
Fueled
Best for: Apps where interaction design and visual execution are major differentiators.
Strong mobile emphasis with published app work across travel, media and consumer experiences.
In this category:
- Mobile apps for iOS and iPadOS; Flutter also listed
- Apps where interaction design and visual execution stand out
HQNew York, USA (third-party directories); distributed team
Founded2007
Team300+ experts (its site)
Named clientsMicrosoft, Google, Apple, The White House, New York Times (case studies)
Partners & badgesWordPress VIP partner; Webby and Emmy recognition
Services
What stands out
- In business since 2007; leadership team named on its About page
- Case studies for recognizable clients (Microsoft, Google, Apple, The New York Times)
- Both web/CMS and mobile practices; WordPress VIP partner
Research before choosing
- Mobile is one of four practices; confirm the mobile team's size and recent app releases
- Pricing and engagement terms are not published
- Headquarters differs by source (fully remote per its site, New York per directories); confirm the contracting entity
Source: capability pageFacts from the company’s own website and public sources, checked 16 Oct 2026. Not a ranking.
Shortlisted
Netguru
Best for: Businesses evaluating native, Flutter and React Native approaches.
Native and cross-platform development with product design and backend capabilities.
In this category:
- Native iOS (Swift) and Android (Kotlin)
- Cross-platform: React Native, Flutter and Kotlin Multiplatform
- Accessibility to WCAG 2.1 AA and QA automation built into each sprint
HQPoznan, Poland
Founded17+ years in market
Team400+ people
Named clientsDelivery Hero, UBS, Vinted, Zabka, OLX / Otodom
Partners & badgesMicrosoft, AWS and VTEX partner; B Corp; Clutch, Inc. 5000
Services
What stands out
- Publishes cost ranges and engagement models.
- Named case studies with results.
- Documented process with two-week sprints.
Research before choosing
- Company figures differ across its own pages; ask for current numbers.
- Published ranges are baselines, not quotes.
- Confirm which team members will work on your project.
Source: capability pageFacts from the company’s own website and public sources, checked 16 Oct 2026. Not a ranking.
Shortlisted
thoughtbot
Best for: New mobile products needing discovery and validation alongside the build.
Product strategy and design alongside iOS, Android and React Native development.
In this category:
- iOS, Android and React Native alongside product strategy and design
- New mobile products that need discovery and validation
HQBoston, USA (third-party); distributed team
Founded2003
TeamAbout 50-100 (third-party estimates)
Named clientsMailchimp, Vimeo, Hilton, Kickstarter, Disney, Merck
Partners & badgesNot stated
Services
What stands out
- Product strategy and design alongside development
- Offers team augmentation and fractional leadership
- Long named client list (Mailchimp, Vimeo, Hilton, Kickstarter)
Research before choosing
- Rails-heavy history; confirm depth in your stack
- Headcount differs by source
- Pricing not published
Source: capability pageFacts from the company’s own website and public sources, checked 16 Oct 2026. Not a ranking.
How this shortlist was made: agencies were chosen for relevant public work, depth in the category and coverage across the project lifecycle, based on public evidence, mainly provider sources. Team quality and comparable client references still need checking before selection. See How We Choose.
How to choose
- Ask the agency to justify native or cross-platform for your product.
- Request store links and the team that built them.
- Get a written estimate with support terms.
- Confirm who works on your app and where they are based.
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