IsItCorrect PAT vs Co
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IsItCorrect PAT
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IsItCorrect PAT is a Photographic Auditing Tool ("PAT") designed to quickly and efficiently allow for the auditing of physical environments. This particular app has been designed for areas without internet connectivity and/or for the auditing of sensitive areas. The app is entirely offline and does not even save produced audit reports (which are normal PDF's) to the cloud. You have to manually retrieve the audit PDF's, such as via the default Files app (which lets you e-mail the PDF somewhere) or by connecting the device to a computer and retrieving the PDF via iTunes. After starting an audit session in the app you can easily fill in the required details of an audit item and take photographs of that item. Box in the wrong spot? Notices put up correctly? It is easy to record the good and the bad as you move through your physical environment, be it a home, office, warehouse, or other type of area. If the item you're examining has both good and bad aspects you can record this too. The app attaches the information you provide to each photo so once you've taken a photo you can change the correctness / compliance status and the reason, and take another for what is technically the same item, or you can treat the good and the bad as different items - the choice is yours. As you take photographs the app informs you of the number taken thus far and finishing an item is a single button press, clearing all fields so you're ready to move to the next item. Taking photographs uses the familiar apple camera interface and photos can be taken in any orientation and that orientation will be saved and used for the audit report. When you're finished push the complete audit button and everything you have recorded is processed and stored in a PDF that you can open in a PDF reader of your choice. You can review the produced PDF from within the app, just to make sure it is there. Warnings, errors, and other alerts appear promptly and, where possible, suggest action you can take to resolve issues, such as having low storage space on your device or not having the camera permissions set correctly. The audit PDF that is produced focuses on the photo you took, with it taking up the vast majority of the space available. The reason follows in importance, centralised at the top. Of note is that the reason can be longer than the space it is assigned and if it is too long it will just draw over the photo until it runs off the page, so you can have quite lengthy reasons if needed. Some app branding and quick-recognition good or bad images take up the rest of the space, making it clear what produced the PDF and if the item was marked as being correct / compliant or not. The PDF is in landscape orientation so it comes ready for use in presentations whilst also allowing maximum space for photos taken in landscape orientation. There are some things the app does not do, for example it won't let you edit any photos already taken - if you make a mistake, keep going because it's actually easy to fix when the PDF is produced. Since each photo is independent and on its own page any unwanted photos are easy to delete - you just use your preferred PDF editing tool to delete the entire page it is on and it will have no effect on the content in the rest of the document. Finally the app is somewhat robust and preserves data whilst running however if you terminate the app or if it is terminated by the Operating System (e.g. it is idle for too long, or your battery goes flat), the active audit session will be lost entirely, so please keep this in mind before starting an audit session and during a session.
Co
This AI-powered workspace acts as your intelligent assistant, streamlining tasks and boosting efficiency. Engage in natural conversations, generate content, organize information, and solve problems within a single, intuitive interface.
- AI Smart Chat
- AI Writing and Content Generation
- Productivity and Work Assistance
- Clean and Efficient Interface
- All-in-One AI Tools
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Co‑work is an AI workspace designed to improve efficiency, making AI your always-available intelligent assistant. With Co‑work, you can have natural conversations with AI, gain inspiration, generate content, organize information, and complete various tasks within a simple and efficient interface. Instead of switching between multiple tools, Co‑work integrates AI chat and practical tools into one platform, helping you stay focused and work more efficiently. Key Features: AI Smart Chat Communicate with AI anytime to get answers, inspiration, and suggestions. AI Writing and Content Generation Helps generate articles, emails, notes, copy, and social media content. Productivity and Work Assistance Organize ideas, create plans, solve problems, and improve work efficiency. Clean and Efficient Interface A simple and intuitive design that keeps you focused on thinking and creating. All-in-One AI Tools No need for multiple AI apps—Co‑work meets your daily AI needs in one place. Use Cases: Writing and content creation Learning and information organization Brainstorming and idea generation Improving work efficiency Solving everyday problems Whether you are a student, creator, or professional, Co‑work helps you complete your work more efficiently. Use AI to make work simpler. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: IsItCorrect PAT at none against Co's 10. IsItCorrect PAT also leads on iOS requirement (14.0 vs 18.0). Co's advantage is update cadence (every 9 days vs every 16 months). On price, 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. Co sells 8 in-app purchases, starting at $3.99 per 7 days. IsItCorrect PAT asks for nothing beyond the download.
IsItCorrect PAT ships an update every 16 months, Co every 9 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.
| Parameter | IsItCorrect PAT | Co |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.7 (3 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 16 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 1 MB | 59 MB |
| Age rating | 4+ | 12+ |
| Developer | David Storey | 晨越 唐 |
In-app purchases
IsItCorrect PAT
No in-app purchases
Co
- weekly plan$3.997 Days
- Lite$14.991 Month
- Standard$29.991 Month
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- free3day_standard3 Days trial$29.991 Month
- yearly_plan3 Days trial$39.991 Year
- yearly_plan_fullprice$39.991 Year
- Pro2 variants$79.991 Month
- Max2 variants$149.991 Month









