Design Materials vs P. Manager
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Design Materials
This app serves as an offline reference guide for various design materials, including polymers and metals. It allows users to manage their own material data, view 3D models, and capture objects with their device's camera. Ideal for professionals and hobbyists involved in product design and 3D printing.
- Offline material reference guide
- Custom material and resin management
- 3D model viewer and import/export
- Object capture via device camera
- Favorites and notes section
- Cross-device compatibility (iOS, macOS)
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Design Materials is an offline material reference guide trusted by hundreds of Engineers, Architects and Designers all over the World. The App was created to be a personal tool to help me take design decisions during the concept ideation of industrial products, in particular for 3D printing. Due to high demand, I decided to make it public and share it's information and power. Basically, it provides the fundamentals for most design/engineer materials on the market, based on reliable and curated academic sources. In addition, you can now create and manager your own Material, Resin or Filament data. Finally, the App features Apple Intelligence (AI) with a pair of Entity Masters in material engineering and STEM: HAL 9000 and Elemento, which can be accessed 24/7 while being on or offline (no internet). The guide contains material categories such as polymers, metals, naturals and more. All of these include synthetic, organic, bio-degradable, plastic, and much more subcategories. Each material contains information such as: About, Properties, Tags, Applications, Types and Photos. HAL 9000 & Elemento (AI entities): The legend of HAL is back. Ask anything from space to robotics or biology, HAL and Elemento are Gods of material engineering and science. HAL does precise flawless analysis while Elemento brings fresh human creativity with an attitude. In addition, you can choose the Tone of AI: Formal, Friendly, Direct or Arrogant. Both AI Entities work offline 24/7. Other features includes: • AI Chat with HAL 9000 or Elemento • Material Packs (subscribers) • 3D-model viewer/import/export • Object Capture: Scan Objects • Favorites section • Offline reference (no Internet needed) • Long list of properties per material • Save Notes per material/resin/filament • Create Designs using Apple Pencil • Support for all iPhone screen sizes • Dark Mode • iPadOS support • MacOS support • Continuous Updates with New Content • UNIVERSAL PURCHASE - One Payment for all Devices New Pro version auto-renew subscriptions: - 1 year (Gold) | 3 month (Silver) | 1 month (Bronze) subscriptions* - Access to all material database ABOUT SUBSCRIPTIONS • Payment will be charged to iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. • Terms of use (EULA): https://www.termsfeed.com/live/faff17b4-8765-4690-b57e-9aabde3d2950
P. Manager
This application provides customer service support for PurrSong Products. It offers a direct channel for users to get assistance with their products.
- Customer service support
- PurrSong Products assistance
- Direct user channel
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Application for PurrSong Products Customer Service
Screenshots
Verdict
The clearest difference is rating: Design Materials at 4.5 against P. Manager's 3.0. P. Manager's advantage is in-app purchases (none vs 3) and iOS requirement (11.0 vs 18.6). On price, ratings volume, update cadence and ads 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. Design Materials sells 3 in-app purchases, starting at $7.99 per month. P. Manager asks for nothing beyond the download.
Design Materials holds the better App Store score, 4.5 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
Design Materials ships an update every 3 months, P. Manager every 2 months. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.
| Parameter | Design Materials | P. Manager |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 2 | 2 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 18.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 28 MB | 144 MB |
| Age rating | 4+ | 4+ |
| Developer | Chrystian Enriquez | PurrSong, Inc |
Customer experience
Design Materials
P. Manager
In-app purchases
Design Materials
- Bronze member$7.991 Month
- Silver member$17.993 Months
- Gold member$49.991 Year
P. Manager
No in-app purchases









