Comparison

Sentinel InstaCheck vs iDocuments Mobile

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

Head to head
About

Sentinel InstaCheck

This application assists users in performing water quality tests for heating systems, following UK best practices. It provides tailored recommendations for system care based on test results, helping to prevent breakdowns and maintain heating efficiency.

Highlights
  • Guides water quality testing
  • Follows BS7593 standard
  • Generates water quality reports
  • Provides tailored care recommendations
  • Protects boiler and heat pump installations
  • Helps prevent breakdowns and inefficiency
Features
Read full description

Used in conjunction with the InstaCheck water test kit - sold separately - the app guides users through best practice guidelines based on BS7593 standard; It generates a water quality report with tailored recommendations for ongoing system care, according to water test results. InstaCheck allows users to follow UK best practice at install and service visits, ensuring boiler and heat pump installations are protected against corrosion and scaling. Poor water quality and inadequate treatment can result in breakdowns, loss of heating efficiency and excessive fuel consumption; The tests and recommendations in InstaCheck reports are designed to help protect installations from these common problems.

About

iDocuments Mobile

Features
Read full description

Streamline, automate and simplify. iDocuments provides you with integrated web, cloud and mobile business software solutions that give you access anytime and anywhere to the information you need to work smarter. The iDocuments app for iPhone simplifies business expenses, credit card receipting and document approval. - Approve & reject workflow documents of various types - View, validate and submit your expenses - Attach receipts, or take a photo with your iPhone for auto-attachment - Upload cash, mileage, entertainment and hotel expenses - Allocate expenses to projects and analysis codes - Enter locations to auto-calculate mileage - Capture and upload credit card receipts

Screenshots

Sentinel InstaCheck3 screens
iDocuments Mobile4 screens

Verdict

The call

The clearest difference is update cadence: iDocuments Mobile at every 2 months against Sentinel InstaCheck's every 5 months. Sentinel InstaCheck's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Sentinel InstaCheck ships an update every 5 months, iDocuments Mobile every 2 months. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

Scorecard2 real differences ยท 6 level
Sentinel InstaCheck versus iDocuments Mobile: the parameters behind the verdict, then further details
ParameterSentinel InstaCheckiDocuments Mobile
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 5 monthsEvery 2 months โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeโ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 โ€” better15.0
Further details โ€” not scored
Size17 MB26 MB
Age rating4+4+
DeveloperEnergy & Compliance Technology LtdVision33, Inc.

In-app purchases

None

Sentinel InstaCheck

No in-app purchases

None

iDocuments Mobile

No in-app purchases

Questions

Is Sentinel InstaCheck free?
Sentinel InstaCheck is free to download, with no in-app purchases.
Is iDocuments Mobile free?
iDocuments Mobile is free to download, with no in-app purchases.
Do Sentinel InstaCheck or iDocuments Mobile have ads?
Neither Sentinel InstaCheck nor iDocuments Mobile shows ads.
Which is updated more often, Sentinel InstaCheck or iDocuments Mobile?
Sentinel InstaCheck ships an update every 5 months, and iDocuments Mobile every 2 months. Most recently, Sentinel InstaCheck was updated on October 10, 2026 and iDocuments Mobile on October 15, 2026.

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