Work with Devin · iOS performance & release engineering
If the articles were useful, the same method is available as a paid engagement: measure the problem, write down the evidence, hand over a report your own engineers can reproduce. Every price below is fixed and published — no discovery-call gate.
This page is the short version: published prices and how to start. Full details on the iOS page — the case write-ups, deliverables, process, boundaries, and the inquiry form.
Three services, fixed fees in USD: single-flow audit $500 · full-app audit $750 · architecture review $1,800. Each includes a written report, a 60-minute walkthrough, and one revision. 50% at kickoff, 50% on delivery.
中文说明：范围固定、按项目报价。先发一封邮件说明项目，30 分钟通话后给出固定报价， 确认范围再开始。
Services
All work is remote and priced in USD. The fee is fixed before access is shared, so there is no open-ended hourly meter on these three engagements.
$500
Fixed fee · 3 business days
For one flow that feels slow or unstable.
You provide: read-only repository access or a buildable archive, plus the device class where the problem appears.
Request this scope →$750
Fixed fee · 5 business days
For launch time, core flows, memory, and crashes across the app.
You provide: read-only repository access or a buildable archive, plus the flow and device class where the problem appears.
Request this scope →$1,800
Fixed fee · 10 business days
For growing codebases and module boundaries that no longer hold.
You provide: read-only repository access or a buildable archive, and the decisions the review must support.
Request this scope →Also available: an ongoing contract at $50/hr (minimum 15 hours per week, billed weekly, from $750/week) for teams that need hands-on delivery after an audit.
Process
No long intake form and no open-ended discovery project. The first two steps cost nothing.
Write to the address below with the app, the flow that feels slow, unstable, or blocked, the device class where it shows up, and your timeline. A screen recording, trace, or crash report helps but is not required.
Within one business day you get a 30-minute call slot. We agree on the scope, what counts as done, and what you will hand over before any access is shared.
You receive a fixed quote and the scope in writing, valid for 30 days. 50% at kickoff, 50% on delivery. Then access, baseline, and the report.
Terms and boundaries
Included in every fixed-scope engagement: one written report, one 60-minute recorded walkthrough, and one revision to the report and a re-check of the same scope. The report separates what changed, what did not, and what remains uncertain. A mutual NDA is available on request. Quotes are valid for 30 days.
Not promised: App Store approval, a specific launch time, or a specific percentage improvement in any metric. I stand behind the method, the measurements, and the written deliverables — not a guaranteed outcome.
Contact
Send the app, the flow, the device class, and your timeline. I reply within one business day with a scope and a fixed quote. If it is not a fit, I will say so.
Currently accepting new audits and reviews
superapp.devin@gmail.comWhat to send
Within one business day: a 30-minute call slot, a written scope, and a fixed quote. No payment is taken before the scope is agreed.
More detail on deliverables and the full case write-ups is on the iOS performance and release engineering site.