Purpose-built apps
From HOA operations to rentals, casework, and events — each product solves a concrete problem for the people who use it.
Addo
Software applications built to serve communities.
Addo is a collection of software applications and operated services that include, but aren't limited to, Birdcall, DoOps, Exhibit, FastHOA, ReZamp Lending, and TennyRentals. We use our platforms to provide services that give back to the communities they support.
- 6+Applications
- 1Shared mission
- LocalCommunity impact
About
A portfolio of platforms, one purpose.
Each Addo application is a standalone product — built for a real industry, run as a real service. Together they form a collection that puts community outcomes ahead of generic SaaS growth charts.
Services that give back
We don't just ship software. We operate platforms that deliver services and return value to the communities they support.
Growing collection
Birdcall, DoOps, Exhibit, FastHOA, ReZamp Lending, and TennyRentals are the start — not a closed list. More applications join as needs arise.
Applications
Products in the Addo collection.
These applications (and others) power services that strengthen the communities around them.
Hospitality
Birdcall
All-natural chicken, unexpected hospitality, and a 1% Back program that returns a portion of sales to the neighborhoods around each restaurant.
eatbirdcall.com →Legal tech
DoOps
AI-assisted case evidence for defendants, plaintiffs, attorneys, and investigators — timelines, witnesses, scenarios, and analysis that turn a chaotic file into a working playbook.
doops.io →Legal tech
Exhibit
Case-scoped legal file workspace — drop discovery and body-cam footage, get searchable transcripts and a chronological exhibit timeline with closed, self-hosted AI.
exhibit.law →Property
FastHOA
Transparent HOA management for homeowners and admins — expenses, maintenance, events, documents, voting, and member communication in one place.
fasthoa.com →Mortgage
ReZamp Lending
Chandler-based mortgage team helping buyers and homeowners purchase and refinance with competitive rates and a faster, clearer loan experience.
rezamplending.com →Hospitality
TennyRentals
Direct-book Denver townhome on Tennyson Street — rooftop mountain views, zero cleaning fee, and hospitality rooted in a walkable local neighborhood.
tennyrentals.com →Mission
Give back to the communities our platforms support.
Software is the means. The goal is practical: better services, clearer operations, and tangible benefit for the people and places each product touches.
Community first
Every application is judged by whether it helps the people and places it serves — not by feature count alone.
Operated, not just sold
We run these platforms as working services, so product decisions stay grounded in real day-to-day use.
Shared backbone
Addo ties the portfolio together — so each application can focus on its community while sharing the operating muscle behind the scenes.
Room to grow
The collection isn't fixed. When a community need fits, the next application joins the family.
Local impact
From HOAs and hospitality to legal evidence work and home lending, the portfolio lands where people live, stay, and get things done.
Quiet competence
Reliable tools, clear workflows, less noise — so operators can spend time on people instead of paperwork.
Part of the Addo collection?
The operating hub at app.addo.io is private to our portfolio — sign in if you've been invited.