GAMMA AR vs Reedio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GAMMA AR
Visualize 3D BIM models on construction sites using augmented reality. Compare real-world conditions with plans, detect errors early, and improve communication between site and office. Streamline workflows and reduce costs.
- Augmented reality BIM overlay
- On-site construction monitoring
- Error detection and prevention
- Digital communication channels
- Integration with Autodesk, Procore, BIMCollab
- BIM model synchronization
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GAMMA AR: Augmented Reality for Construction Site Management GAMMA AR is an application designed for monitoring construction sites. It utilizes augmented reality technology to overlay 3D Building Information Models (BIM) on construction sites using smartphones or tablets. With GAMMA AR, site managers, facility managers, craftsmen, and other stakeholders involved in the construction process can walk through the site and compare real-world conditions with the planning information contained in 3D BIM models. GAMMA AR enables the visualization of 3D BIM models before and during the construction process, thereby fostering a better understanding of the planning, preventing errors, and reducing construction costs. This enables site managers and planners from various disciplines (HLS, architecture, etc.) to collaborate on the construction site using the BIM model, preventing collisions and resolving ambiguities before they lead to errors. Additionally, GAMMA AR allows for the direct detection of errors within the BIM model, enabling adjustments to be made during the planning phase, preventing errors, and ensuring comprehensive monitoring of construction progress. Is GAMMA AR for you? GAMMA AR allows you to connect various software systems such as Autodesk, Procore, and BIMCollab. Construction site managers benefit from GAMMA AR by avoiding errors and eliminating the need to interpret 2D plans. Facility managers can report errors or make adjustments directly in the BIM model via GAMMA AR and transmit this information to other stakeholders involved in the construction process. GAMMA AR is an easy-to-use, intuitive tool that can be applied directly without requiring any training that could increase the cost of implementation. For construction companies, GAMMA AR offers significant benefits: entire departments can be relieved of the burden of communicating via 2D plans, which is no longer necessary. GAMMA AR establishes digital communication channels between the construction site and the office. Using BIM360 or Autodesk Construction Cloud (ACC)? Simply sign in with your Autodesk account, import your IFC, REVIT, and NAVISWORKS models into GAMMA AR, and synchronize your issues with BIM360, ACC, Procore, or BIMCollab. Summary Avoid Errors: Plans on-site are cumbersome and prone to errors! For many tasks, it is faster and safer to review the plans directly on a tablet and compare them with real-world conditions. By working digitally on tablets and smartphones, the reliance on paper plans is significantly reduced, thereby lowering the risk of obsolete information and redundancies. Sync Models and Notes with Your Office: With GAMMA AR, you can send issues directly from the construction site to the office. Each comment is directly linked to a building element or room during site inspections. With this location reference, new information is immediately integrated into the building model. This simplifies documentation and improves communication, as comments are clearly and unambiguously conveyed.
Reedio
This app allows users to read, annotate, edit, and organize PDF documents. It offers tools for highlighting, drawing, adding text, and managing pages. Advanced features include redaction, OCR, and measurement capabilities for professional document handling.
- PDF viewing and annotation
- Insert images and text boxes
- Redact sensitive information
- Organize and reorder pages
- Fill and sign forms
- Scan documents with OCR
- Measure distances and areas
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Reedio is a powerful PDF reader and editor designed for professionals who need to work with documents efficiently. READ & ANNOTATE Highlight, underline, strikeout, draw freehand, add shapes, arrows, lines, and sticky notes. Mark up contracts, research papers, and reports with precision. EDIT Insert images, add hyperlinks, and place text boxes. Redact sensitive information permanently. Flatten annotations to preserve your markup when sharing. ORGANIZE Insert, delete, rotate, extract, and reorder pages. Append entire documents. Assemble the exact PDF you need. FILL & SIGN Add signatures, dates, checkmarks, stamps, and images directly to forms and agreements. SCAN & OCR Convert scanned documents into searchable, selectable text. MEASURE Calculate distances and areas on architectural drawings, floor plans, and technical documents FREE FEATURES: • PDF viewing • All annotation tools • Form filling • Signatures PRO FEATURES: • Edit (images, links, text boxes) • Redact & Flatten • OCR • Page organization • Measure • Priority support Terms of Use: https://reedio.io/terms Privacy Policy: https://reedio.io/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: GAMMA AR at none against Reedio's 2. GAMMA AR also leads on ratings volume (8 vs 1). Reedio's advantage is rating (5.0 vs 4.6) and review sentiment (100% vs 86%). 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. Reedio sells 2 in-app purchases, starting at $2.99 per month. GAMMA AR asks for nothing beyond the download.
Reedio holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: GAMMA AR has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 86% of GAMMA AR's written reviews are positive against 100% of Reedio's.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 19, 2026 and October 18, 2026 respectively.
| Parameter | GAMMA AR | Reedio |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (8 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 85.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 8 — better | 1 |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 384 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | GAMMA Technologies | Eugene Ohu |
Customer experience
GAMMA AR
Reedio
In-app purchases
GAMMA AR
No in-app purchases
Reedio
- Reedio Premium7 Days trial$2.991 Month
- Reedio Premium7 Days trial$29.991 Year









