Zdo vs Black Stone Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zdo
This platform connects skilled professionals from diverse language backgrounds with clients needing their services. It uses real-time translation technology to overcome language barriers, fostering an inclusive service economy and empowering individuals to find work and hire talent.
- Connects skilled professionals
- Supports diverse language backgrounds
- Real-time translation technology
- Secure client payments
- Builds community bridges
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At Zdo, our mission is to create a more inclusive service economy by connecting skilled professionals from diverse language backgrounds with clients who need their services. We believe that language should never be a barrier to finding work or hiring talented professionals. Through our innovative platform and real-time translation technology, we’re building bridges across communities and empowering individuals to succeed.
Black Stone Flow
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Take control of your stone fabrication shop — from slab to installation. Black Stone Flow is an all-in-one operations platform built for countertop fabricators. Manage jobs, track production, coordinate your team, and deliver projects on time — all from your phone. Key Features: • Job Tracker — Follow every package through Photo, Programming, Cut, Polish, and Installation stages with real-time step updates. • Fabrication Management — Assign packages to polishers, scan QR codes for instant lookup, verify completed work with photo documentation and checklists. • Installation Tracking — Start/stop timers, mark packages complete or incomplete, upload job photos, and track installer progress live. • Scheduling — View and manage installation appointments with calendar view, assign crews, and track job status by day. • Dashboard & Analytics — Weekly production charts, polisher performance, lead times, top sellers/materials/customers, digital layout approvals, and sinks needed — all in one glance. • Slab Map — Visual inventory of your slab yard organized by area with quick label printing. • Digital Layouts — Send layout options to customers for approval, track sent/approved/rejected status. • Estimates — Create detailed estimates with materials, edges, sinks, and extras. Send to customers for digital signature approval. • Gallery — Browse all job photos filtered by material, searchable across your entire history. • Push Notifications — Get instant alerts on your phone for installations completed, tasks assigned, digital layouts approved, and more. • Role-Based Permissions — Control exactly what each team member can see and do. • Real-Time Updates — All changes sync instantly across devices via WebSocket. No refresh needed. Whether you run a 5-person shop or a multi-location operation, Black Stone Flow gives your team the visibility and coordination to reduce mistakes, save time, and deliver quality work.
Screenshots
Verdict
Zdo and Black Stone Flow are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Zdo ships an update weekly, Black Stone Flow every 9 days. Both last shipped on October 30, 2026.
| Parameter | Zdo | Black Stone Flow |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (7 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Weekly — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 84 MB | 28 MB |
| Age rating | 17+ | 4+ |
| Developer | ZDO CORP | Iury Santos Leite |
In-app purchases
Zdo
No in-app purchases
Black Stone Flow
No in-app purchases








