PartsBase vs Bell TechPubs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PartsBase
This app connects buyers and sellers in the aviation, aerospace, and defense industries. It allows users to search for parts, send and receive RFQs and quotes, and manage inventory. It serves a global network of over 7,500 companies.
- Search stock items by part number
- Cross-reference with MCRL, PMA, NATO
- Send RFQs to sellers
- Send and receive quotes
- Add and update inventory
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PartsBase, Inc. operates the world's largest B2B online parts locator service for the aviation, aerospace and defense industries. As of today, our members do over 40,000 part searches a day and PartsBase.com receives over 2.8 million page views a month. Our membership is over 7,500 companies strong and usage spans over 194 different countries and growing. PartsBase is bringing to iOS now a set of features that will help you to connect with buyers and sellers from the aviation, aerospace and defense industries: • Search stock items by part number and description • Search using MCRL, PMA and NATO cross-reference • Send RFQs to sellers for the parts that you need • Send quotes to interested buyers • Receive quotes from sellers • Add and update stock items in your inventory
Bell TechPubs
Access technical manuals and interactive documents for mission-critical operations. Supports online and offline viewing, with features like hyper-linking and interactive figures for easy navigation and troubleshooting.
- Online and offline manual access
- Interactive PDF and S1000D IETM formats
- Integrated hyper-linking between documents
- Update notifications for new revisions
- Zoomable interactive figures
- Fault isolation and wiring diagrams
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Access your Bell Technical Publications libraries anytime, anywhere with the Bell Technical Publications iOS app, designed exclusively for iPadOS. Whether you’re on the flightline, in the field, or mid-flight, this app is built to support your mission-critical operations. Key Features: • Online and Offline Access: View technical manuals while online or download individual manuals or entire libraries for offline use. • Interactive Manuals: Access fully interactive manuals in PDF and S1000D Interactive Electronic Technical Manual (IETM) formats. • Integrated Hyper-Linking: Seamlessly navigate between manuals, chapters, and data modules, including maintenance and flight manuals, Illustrated Parts Catalogs, Alert Service Bulletins, Technical Bulletins, and more. • Update Notifications: Stay informed with email and in-app notifications when new manuals are added or revisions are released. • Interactive Figures: Zoom and pan features for figures in Maintenance Manuals and Illustrated Parts Catalogs. • Fault Isolation and Wiring Diagrams: Access interactive Fault Isolation Manuals and Wiring Diagram manuals for enhanced troubleshooting. Designed for aerial firefighters, air ambulance operators, law enforcement, military personnel, and more, this app ensures you have the information you need, even in the most remote locations. Download the Bell Technical Publications app today and take your technical libraries with you wherever your mission takes you.
Screenshots
Verdict
The clearest difference is rating: PartsBase at 4.4 against Bell TechPubs's 4.0. PartsBase also leads on iOS requirement (15.1 vs 17.0). On price, review sentiment, 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. Neither carries in-app purchases, so what you see is what you pay.
PartsBase holds the better App Store score, 4.4 against 4.0. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
PartsBase ships an update every 2 months, Bell TechPubs every 3 months. The most recent releases landed on September 17, 2026 and June 1, 2026 respectively.
| Parameter | PartsBase | Bell TechPubs |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (7 ratings) — better | 4.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 7 — better | 3 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 35 MB | 116 MB |
| Age rating | 4+ | 4+ |
| Developer | PartsBase, Inc | Bell Helicopter Textron Inc. |
Customer experience
PartsBase
Bell TechPubs
In-app purchases
PartsBase
No in-app purchases
Bell TechPubs
No in-app purchases









