Convert your Access database or Excel spreadsheet into a modern web app.
Same logic. Accessible from anywhere. Multi-user. Mobile-friendly. No more “only Bob knows how it works.”
20+ years
Building business apps for small and mid-size companies.
Clear, up-front quotes
No surprise invoices. We scope, then quote the work.
Weekly progress updates
Progress updates every week. No black boxes.
Is this you?
File is too big
The Access or Excel file is hitting size limits, slowing to a crawl, or corrupting on save.
Multi-user conflicts
Two people open it at once and one of them loses their work. Constant “file is locked” pop-ups.
Can’t open on Mac or phone
Sales is in the field, the warehouse is on a tablet, and nobody can get to the data.
The IT person left
The one who built it is gone, and nobody understands how it works.
Security / compliance pressure
Auditors are asking who has access, when, from where. You don’t have answers.
Version sprawl
There are six copies of the file on the shared drive and nobody knows which one is the real one.
Imagine instead…
Anywhere access
Same login from the office, home, a tablet, a customer site.
Real-time multi-user
Ten people editing the same data, no file locks, no lost work.
Mobile-responsive
Built for phone and tablet from the start — no extra app to install.
Role-based security
Sales sees sales. Finance sees finance. Admins see everything — per-user, audit-logged.
Audit trail
Every change is logged: who, what, when. Compliance ready.
Integrations
QuickBooks, Salesforce, Stripe, your warehouse system — talk to the tools you already use. Nothing to install.
Our streamlined 6-step process
- 1
Free System Review
Async-first. Send us your files and we’ll analyze them — no charge. We tell you what we see and what it would take, then get back to you.
- 2
Architecture & quote
We write up the architecture, data model, and integrations — then quote the work up front. No surprises.
- 3
Iterative build with weekly progress updates
You get a progress update every week, so you can course-correct early and never wait months to see where things stand.
- 4
Data migration + parallel run
We migrate your data and run the old system alongside the new one until you’re confident.
- 5
UAT
Your team runs through the new app, tests the workflows that matter, and signs off before launch.
- 6
Go-live & ongoing support
We flip the switch, monitor the rollout, and stay on call. Support is ongoing — you’re not on your own day one.
You’re in good hands
20+ years of MS Access & Excel
We’ve seen every variant of “the Access database that grew up.” Nothing surprises us.
Clear, up-front quotes
We scope, then quote the work up front — no “a few more weeks.”
Weekly progress updates
You get a progress update every week. No black boxes, no surprises at launch.
References on request
Real clients who’ve been through the conversion. Ask us, we’ll connect you.
How a web app compares
| Capability | Access / Excel file | Custom web app |
|---|---|---|
| Access from anywhere | Tied to one PC / shared drive | Any browser, any device |
| Multiple users at once | File locks, lost edits | Real-time, no conflicts |
| Mobile / tablet | No | Built-in, responsive |
| Data integrity | Corrupts, version sprawl | One source of truth, backed up |
| Security | One shared file/password | Role-based logins + audit trail |
| Reporting & integrations | Manual, brittle | Live dashboards + API integrations |
| Scales as you grow | Hits size/row limits | Grows with your data + users |
The cost of staying on spreadsheets
Lost hours add up. Move the sliders to see a ballpark of what spreadsheet busywork costs your team each year — and how much a web app could win back.
How it’s calculated: people × hours/week × hourly cost × 52 weeks = annual cost of the time lost. A purpose-built web app typically wins back a meaningful share of that time by removing the manual busywork. Adjust the sliders to match your team.
Cost of staying on spreadsheets
$27,300/yr
A web app could realistically win back roughly $10,920–$19,110/yr of that.
Get my project estimateOr send your file for a free review.
Illustrative estimate based on the figures you enter — not a guarantee of savings.
What clients say
“The Yittbox team was professional, communicated well and was always willing to meet to hear our ideas for new tasks.”
— Armando Gonzalez
“Great at custom developing Excel and Google Automated worksheets!”
— Minni Forman
“I love this group. Their work is great and the visuals they do for my Access file are spectacular.”
— Michael Crump
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M&A AssociatesFrequently asked
What does it cost?
We provide a quote after we review your files. Every project is scoped to your data, users, and integrations.
How long does it take?
Most projects ship in 6–12 weeks from scoping. The exact timeline is in your quote — no “a few more weeks.”
Will we lose data?
No. We migrate your data into the new system and run the old system in parallel until you’ve verified everything against the new one. Nothing flips until you sign off in UAT.
Can we keep using Access during the transition?
Yes. During the parallel-run phase your team keeps working in Access or Excel exactly like today. We only ask you to switch over after UAT.
Do you sign NDAs?
Yes. Mutual NDA is standard before we look at your file. Send us yours or we’ll send you ours.
What about my existing reports?
Reports come over. We rebuild them in the new web app so they render in a browser and export to PDF/Excel on demand. The numbers stay the same.
How much does it cost to convert a Microsoft Access database to a web app?
Most Access-to-web-app projects land in the low-to-mid five figures, depending on size, complexity, and how clean the data is. Send your file for a free review and an up-front quote, or get an instant ballpark from our estimator.
Is Microsoft Access being discontinued?
No — Access is still part of Microsoft 365 and supported. Teams move off it not because it is going away, but because it hits limits on multi-user access, mobile, scale, and the “only one person understands it” risk.
How do I convert an Excel spreadsheet into a web application?
You move the same logic into a web app backed by a real database: we review the workbook, rebuild the calculations as a multi-user app, migrate your data, and you validate before go-live.
How long does it take to convert Access or Excel to a web app?
Most projects take a few weeks to a few months, depending on size and complexity. You keep using your current file during the build, and a free review gives a realistic timeline up front.
Access or Excel vs a web app — which is better?
For one person a spreadsheet is fine; for a team a web app wins on multi-user access, automatic backups, mobile access, security, and an audit trail — with no single point of failure. The trade-off is the upfront investment.
Get a free system review
Three quick steps. No call required — send what you have and we'll analyze it and reply within one business day.
- NDA on request
- Your file is never shared
- Reply within one business day
- No obligation