case study -- Education technology
Language Learning App
Two years of unresolved audio bugs on iOS, fixed, alongside a full rebuild that cut hosting costs to zero and doubled engagement.
- industry
- Education technology
- region
- United States
- timeline
- May 2023 - ongoing
project snapshot
Syndell resolved a two-year audio bug on a US language learning app, then rebuilt it on Vue.js, Nuxt.js, and Node.js with new iOS and Android apps. Since relaunch: 500+ downloads in 2 months, 100% hosting cost savings, and 73% more clicks.
overview
A USA-based English learning platform
A USA-based English learning platform came to Syndell after two years of trying to resolve a persistent, audio-focused bug on Apple devices, a problem serious enough that it had already outlasted multiple rounds of outside help. The engagement started as a debugging job and grew into a full modernization of the app's stack, mobile presence, and cost structure.
the challenge
What A USA-based English learning platform needed to solve
The audio issue sat at the intersection of hardware and software, which is exactly why it had resisted two years of fixes. Everything else on the roadmap was effectively on hold until it was solved.
- 01
The app's complexity made testing the audio issue difficult to isolate
- 02
Usability issues were actively hurting the overall learning experience
- 03
Critical audio problems on Apple devices were affecting user satisfaction directly
- 04
External expertise had already been sought for hardware and software debugging, without resolution
- 05
Two years had passed without overcoming the intricate, audio-focused app issues
the solution
What did Syndell build for A USA-based English learning platform?
Syndell rebuilt the app's foundation on Vue.js, Nuxt.js, and Node.js, starting with an in-depth hardware-software analysis to finally isolate and resolve the audio problem before moving on to the rest of the modernization.
In-depth hardware-software analysis to resolve the audio complexities at their root
JavaScript framework upgrade for a faster, more responsive app
New native iOS and Android mobile apps developed from the ground up
App store setup and approval management handled end to end
Hosting migration and optimization to reduce ongoing expenses
SEO enhancements to improve visibility
UI/UX redesign for a cleaner, more user-friendly experience
A comprehensive admin panel built to support data-driven growth decisions
technology stack
- Vue.js
- Nuxt.js
- Node.js
- Twilio API
- Google Cloud
the outcome
What did this project achieve?
Once the audio issue was resolved, the broader rebuild produced measurable gains across downloads, cost, and engagement within the first months.
results below are self-reported by the client, as published in the original case study on syndelltech.com
500+ downloads in the first 2 months after relaunch
100% hosting cost savings from the migration and optimization work
73% more clicks following the SEO and UI/UX improvements
91% happy clients reported after the rebuild
what this means for you
If a stubborn bug has already outlasted one or more outside vendors, your next step isn't another quick patch, it's the kind of hardware-software root-cause analysis that finally solved this two-year problem. Your users won't wait through a third failed fix.
why it worked
The headline number here is not a growth metric, it is a fix: a two-year-old audio bug that had already resisted external debugging attempts. Solving hardware-software issues like that takes a different kind of diagnostic work than a typical feature build, and it had to happen before any of the downstream wins -- the downloads, the cost savings, the clicks -- were possible at all.
This project drew on Syndell's mobile app development practice. Source case study reviewed on the live Syndell site at syndelltech.com.
more work
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frequently asked
Questions about this project
01Can a persistent app bug be fixed after other agencies failed?
Yes. This client had already sought outside help for two years before Syndell resolved the audio issue through in-depth hardware-software analysis, isolating a problem that had resisted multiple previous debugging attempts.
02How much can hosting optimization save on an app rebuild?
For this language learning app, hosting migration and optimization delivered 100% hosting cost savings alongside the broader Vue.js and Node.js rebuild.
03Does an app rebuild need native iOS and Android apps, or is a wrapped web app enough?
Syndell built new native iOS and Android apps from the ground up for this client, given the audio issue was specifically tied to Apple device hardware behavior.
04What results follow a rebuild like this?
Within the first two months after relaunch: 500+ downloads, 73% more clicks following SEO and UI/UX improvements, and 91% happy clients reported.
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proof -- 500+ downloads in the first 2 months after relaunch
