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Services · App Rescue

Get Your App Back on Track

We take over stuck, unstable or overdue software and move it to launch. A team that shipped 1,000+ projects for 40M+ users across 37+ regions.

What Is App Rescue?

If your app is in development but stuck, unstable or moving in the wrong direction, we help you regain control. We do not start over by default: first we assess the real state of the project, find what can be reused, and define the safest, most realistic path to launch.

App Rescue · Warning Signs

Signs Your Project Needs Rescue

The situations we step into most often, when development has stalled or lost direction.

Stalled Before Launch

The app is partly built but still not ready to ship, with no clear release date in sight.

Overrun Time & Budget

Deadlines keep slipping and the budget keeps growing, with no reliable end date.

Growing Bug Backlog

Bugs and backlog items pile up, and new ones appear every time old issues get fixed.

Unclear Project Status

You cannot tell what is finished, what is broken, and what still needs to be done before launch.

Poor Communication

Updates from the current team have become slow, unclear or inconsistent over time.

Risky Team Handover

You want to switch vendors but worry about the risks of handover and continuity.

How App Rescue Works

1. Project Intake
1. Project Intake

We review your status, goals, materials, known issues and main concerns to understand what went wrong.

2. Technical Review
2. Technical Review

We inspect the codebase, builds, infrastructure, integrations, environments and app behavior.

3. Gap & Risk Analysis
3. Gap & Risk Analysis

We compare the current build against the expected scope to find what is missing, unstable or risky.

4. Recovery Roadmap
4. Recovery Roadmap

We prepare a practical plan: stabilize, continue, refactor, partially rebuild, or rebuild only where justified.

5. Rescue Development
5. Rescue Development

Once the plan is approved, we take over, fix critical issues and complete the remaining scope.

6. Launch & Beyond
6. Launch & Beyond

We stabilize the app for production, move it toward launch, and continue development or support as needed.

What the Assessment Covers

During the Assessment Stage, our development and QA teams review your documentation, environments, builds and existing functionality to build a clear expectation vs. reality picture.

Codebase & Architecture

How the code is written and structured, and whether it can support the remaining scope.

Feature Completion & Gaps

What was expected, what is actually built, what is missing, and what is unstable.

Critical Bugs & Technical Risks

Blocking issues, unstable areas and risks that can affect other parts of the system.

Infrastructure & Environments

Builds, environments, integrations and third-party setup, and how reliably they all run together.

Documentation & Assets

Specs, designs, backlog and project materials, and what access is still missing.

Reuse vs Rebuild Decision

What can be kept as is, what should be improved, and what needs to be rebuilt from scratch.

Stage 1

Stage 2

The Assessment Stage

Rescue Execution

Before active development, we review the current state of the project: application, code, architecture, environments and known issues, to see how bad it really is and what can be saved.

Expectation vs reality picture of the project

Completed features and missing scope

Critical bugs, risks and technical limits

Reuse vs rebuild recommendation

Recovery roadmap and revised MVP scope

Updated timeline and budget range

Once the plan is approved, our team takes over development: fixing critical bugs, stabilizing the app, refactoring or rebuilding weak parts, and completing the remaining scope.

Fix critical bugs and stabilize the app

Refactor problematic parts of the system

Rebuild selected modules where needed

Complete unfinished features from scope

Improve QA and prepare production

Continue toward launch and beyond

App Rescue · Deliverables

What You Get

At the end of the Assessment Stage you receive a clear picture of the project and a practical plan to move forward, ready to act on internally or together with us.

Current-State Audit

A structured report on the real state of your project:

  • Codebase & architecture review

  • Feature completion & gap analysis

  • Critical bug & risk list

Recovery Plan

A practical path from where you are to launch:

  • Reuse vs. rebuild recommendation

  • Recovery roadmap & revised MVP

  • Updated timeline & budget range

Transition Kit

Everything you need to take over the project safely:

  • Vendor transition plan

  • Access & assets checklist

  • Handover and next steps plan

Trusted by Industry Leaders

MAY 4, 2026
Clutch logo

Mercury Development has met all the client's project goals and exceeded their expectations. The team has managed the project in detail, hit all deadlines, managed expectations, and reprioritized tasks. Moreover, they've understood the client's business and become a true partner.

CEO, Sports Tech Company
FEB 4, 2026
Clutch logo

Mercury Development delivered the project on time with a structured approach and strong technical expertise. The engagement resulted in higher customer satisfaction, improved retention, and better regulatory compliance. Communication was through email, messages, and weekly virtual meetings.

President, Safeguard Solutions CBA Inc.
FEB 19, 2025
DesignRush logo

Development provides software integration and mobile app development for turnkey retail platforms, ensuring up-to-date functionality and system cohesion by scaling from 2–10 resources as needed. The team’s precise task breakdowns, affordable price point, and proactive reporting strengthen the partnership.

Matthew Kulig, Co-Founder & CFO at Aisle411
FEB 15, 2025
DesignRush logo

We’ve actually brought Mercury in across three totally different companies. First it was an app for car sales, then later they stepped in to fix a fire safety app that needed help, and now they’re building stuff for a valve manufacturer. Kinda shows they can jump into all sorts of industries and just get the work done.

Manager of Digital Marketing at Swagelok
DEC 8, 2022
Clutch logo

Mercury Development consistently delivers high-quality codes that the client has never seen from a contract organization. They've not only contributed to existing features but have also led the development of new initiatives. Overall, the client is impressed with the vendor's talented engineers.

CEO, Sports Tech Company
DEC 7, 2021
Clutch logo

Mercury Development has helped the client with all kinds of developments and acquisition plans. They were quickly able to familiarize themselves with the business, industry, and products. The team maintains strong control of the timelines and budget but remains open to changes and client requests.

Program Manager, Managed Dental Care organizati...
MAY 3, 2019
G2 logo

Mercury is very organised and there are no hidden surprises. They first scoped the project in detail, questioning the specification supplied as necessary. They also focussed on the success testing right from the start. I was also guided through the process so it was very straight-forward.

Andy D., Chief Operating Officer
MAR 6, 2018
GoodFirms logo

Mercury was awesome, they were reasonably priced, and took ownership over the project from the get-go. The code is clean, the app is polished, and they made multiple revisions very easy and at no additional charge. I would highly recommend working with them again, especially if you need an Apple TV app built with an API to your YouTube channel.

Aeron Sullivan, Director Of Audience Development...

From Stuck Project to Shipped App

Products we took over, stabilized and moved forward. Real teams, real deadlines, real recoveries.

Hit it Great

01

Hit it Great

Hit It Great combines golf fitness, personalized coaching, and performance tracking in a scalable iOS and Android app.

Fitness Bank

02

Fitness Bank

FitnessBank is a new lifestyle bank servicing clients across the United States.

SmartPin

03

SmartPin

Gamifies par-3 golf with cash-prize challenges, smart flagsticks, and AI-powered shot tracking.

FAQ

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