Comparison

Simbio PLOD vs IsItCorrect PAT

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Simbio PLOD

Features
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Simbio PLOD enables paperless data entry for underground hardrock mining works. Once PLOD is configured, it can operate with no network connectivity, from pre-start checklists, to activity tracking, and shift finalisation. Once network connectivity is obtained, PLOD aggregates all required data and feeds this back to a central repository.

About

IsItCorrect PAT

Features
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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.

Screenshots

Simbio PLOD4 screens
IsItCorrect PAT1 screens

Verdict

The call

Simbio PLOD and IsItCorrect PAT are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Simbio PLOD ships an update every 8 months, IsItCorrect PAT every 16 months. The most recent releases landed on October 25, 2026 and September 9, 2026 respectively.

ScorecardNo meaningful differences
Simbio PLOD versus IsItCorrect PAT: the parameters behind the verdict, then further details
ParameterSimbio PLODIsItCorrect PAT
PriceFreeFree
Update frequencyEvery 8 months โ€” betterEvery 16 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 โ€” better
Further details โ€” not scored
Size87 MB1 MB
Age rating4+4+
DeveloperSimbio by Digital TerrainDavid Storey

In-app purchases

None

Simbio PLOD

No in-app purchases

None

IsItCorrect PAT

No in-app purchases

Questions

Is Simbio PLOD free?
Simbio PLOD is free to download, with no in-app purchases.
Is IsItCorrect PAT free?
IsItCorrect PAT is free to download, with no in-app purchases.
Do Simbio PLOD or IsItCorrect PAT have ads?
Neither Simbio PLOD nor IsItCorrect PAT shows ads.
Which is updated more often, Simbio PLOD or IsItCorrect PAT?
Simbio PLOD ships an update every 8 months, and IsItCorrect PAT every 16 months. Most recently, Simbio PLOD was updated on October 25, 2026 and IsItCorrect PAT on September 9, 2026.

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