IOU vs Flipsentry
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IOU
Create professional agreements and manage payments effortlessly. Draft documents using AI, e-sign, and track invoices and due dates in one organized platform. Secure sign-in ensures your data is protected.
- AI-powered agreement drafting
- E-signature functionality
- Payment and invoice management
- Due date reminders
- Dispute tracking
- Secure sign-in
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IOU helps you create clear, professional agreements and keep payments on schedule, without the back‑and‑forth. Draft with AI in chat or voice using ready‑made templates, then e‑sign, export to PDF, and manage invoices, due dates, and reminders in one place. Powerful search, dispute tracking, and a built‑in assistant keep everything organized, with secure sign‑in via Apple or Google. Terms of Use: https://ioumarker.com/legal#terms Privacy Policy: https://ioumarker.com/legal#privacy Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Flipsentry
This app helps resellers and bargain hunters find profitable deals on Facebook Marketplace. It continuously scans listings and sends instant notifications for new items matching your custom criteria, allowing you to act fast and secure the best opportunities before others.
- Continuous marketplace scanning
- Fast push notifications
- Smart filtering with keywords and price
- Custom search radius
- Multiple search alerts
- User-friendly interface
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Be first to profitable Facebook Marketplace deals . Flipsentry watches Marketplace for you and alerts you when listings match your searches, so you can contact sellers first instead of refreshing all day. How it works Create searches with keywords, price, and a travel radius from 5 to 100 miles. We scan continuously and send alerts from instant to hourly, depending on your plan. Matching listings land in one feed. What’s included • Multiple searches with custom alert speeds • Price, keyword, and location filters • Price drop alerts for saved and viewed listings • Smarter price estimates and deal-quality badges • Custom filters tied to your search groups • Distinct sounds for Good, Great, and price-drop alerts • Push notifications on your phone Built for flippers Resellers, car flippers, furniture and electronics dealers, collectors, and anyone who wants earlier access to Marketplace listings. Terms of Use: https://flipsentry.com/terms Privacy Policy: https://flipsentry.com/privacy EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: IOU at none against Flipsentry's 3. Flipsentry's advantage is ads (none vs shown) and review sentiment (100% vs 83%). On price, rating, ratings volume and update cadence 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. Flipsentry sells 3 in-app purchases, starting at $34.99 per month. IOU asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for IOU against 5.0 for Flipsentry. Both are backed by a comparable volume of ratings — 8 and 13 respectively. Written reviews are what separate them: 83% of IOU's written reviews are positive against 100% of Flipsentry's.
IOU ships an update every 4 days, Flipsentry weekly. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.
| Parameter | IOU | Flipsentry |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) | 5.0 (13 ratings) |
| Positive reviews | 83.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 8 | 13 — better |
| Update frequency | Every 4 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.4 | 16.4 — better |
| Further details — not scored | ||
| Size | 148 MB | 87 MB |
| Age rating | 17+ | 17+ |
| Developer | IOU Marker | Quantra Tech |
Customer experience
IOU
Flipsentry
In-app purchases
IOU
No in-app purchases
Flipsentry
- Starter Subscription7 Days trial$34.991 Month
- Flipsentry Master Subscription7 Days trial$49.997 Days
- Hunter Plan Subscription7 Days trial$99.991 Month
