Flex vs Invoice Maker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flex
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FlexSante for Facilities — Hire Healthcare Professionals Easily and On-Demand FlexSante makes it simple for healthcare facilities to find and hire qualified nurses, CNAs, and healthcare professionals — fast. Post open shifts, review profiles, and connect with vetted, available workers in minutes. Whether you need last-minute coverage or ongoing staffing support, FlexSante helps you keep your facility fully staffed and running smoothly. Key Features: 1. Post Shifts Instantly: Fill open shifts quickly with access to a large pool of credentialed healthcare professionals. 2. Qualified Talent: All FlexSante workers are verified for licenses, certifications, and experience. 3. Flexible Staffing Solutions: Book professionals for per diem, part-time, or full-time roles based on your facility's needs. 4. Real-Time Communication: Manage shifts, track responses, and communicate with staff easily through the app. 5. Cost-Effective: No hidden fees — only pay for the shifts you book. 6. Dedicated Support: Our team is here to help with staffing needs, big or small. Why FlexSante? Staffing challenges shouldn’t get in the way of patient care. FlexSante helps facilities stay fully staffed, save time, and focus on delivering excellent healthcare. “This app is intended for use by organizations and their employees only.”
Invoice Maker
Easily create professional invoices, send estimates, and track payments and expenses. This tool helps businesses get paid faster, manage cash flow, and maintain a professional client image. It automates tasks like recurring invoices and reminders, offering financial insights through reports.
- Generate professional invoices
- Send estimates and proposals
- Track payments and expenses
- Automatic tax calculations
- Recurring invoices and reminders
- Financial reports and insights
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Invoice Maker is a simple yet powerful invoice generator app that helps you generate invoices, send estimates, track payments and expenses. Get paid faster and manage cash flow with confidence. This app is your trusted invoicing partner — helping you save time, avoid errors, and present a professional image to your clients. Key Features: Generate professional, branded invoices Manage multiple client profiles Share price proposals in one place Track and manage expenses Automatic tax calculations and multi-currency support Smart automation: recurring invoices, auto-reminders, and one-click quote-to-invoice conversion Get reports to gain insights on projects and finances Designed for startups, freelancers, agencies, professionals and SMEs, Invoice Maker saves you time and reduces errors — no finance expertise needed. Get paid faster and keep your business flowing smoothly. Download now to generate your first invoice! Privacy Policy:- https://invoicemakers.ai/privacy-policy.html Terms of Use:- https://invoicemakers.ai/terms-condition.html
Screenshots
Verdict
The clearest difference is in-app purchases: Flex at none against Invoice Maker's 3. Invoice Maker's advantage is iOS requirement (16.6 vs 18.0). On price, update cadence, ads and device support there is nothing between them.
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. Invoice Maker sells 3 in-app purchases, starting at $6.99 per 7 days. Flex asks for nothing beyond the download.
Flex ships an update weekly, Invoice Maker every 9 days. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.
| Parameter | Flex | Invoice Maker |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (10 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 10 — better |
| Update frequency | Weekly — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 75 MB | 91 MB |
| Age rating | 17+ | 4+ |
| Developer | FlexSante | Invoice Maker™ |
In-app purchases
Flex
No in-app purchases
Invoice Maker
- Weekly3 Days trial$6.997 Days
- Monthly7 Days trial$24.991 Month
- Yearly14 Days trial$149.991 Year
