Comparison

MAR vs LDM Valves

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

Head to head
About

MAR

Features
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These are datasheets of chemical substances developed by EMSA (European Maritime Safety Agency) that contain relevant information for responding to marine spill of hazardous and noxious substances (HNS). The MAR-CIS datasheets provide concise information on the substances' physical and chemical properties, handling and emergency spill response procedures, as well as maritime transport requirements for safe transport at sea. They collect different types of information on individual chemical substances: −Key properties: main hazards, and physical and chemical properties that define the emergency response operations from the very beginning e.g. flash point, vapour pressure; −Identification: reference numbers and names used to identify the substance; −Substance properties: main properties, appearance and behaviour; −Shipping information: explanatory information from the maritime transportation codes (e.g. IMDG, IBC and IMSBC codes) to help to understand how the substance is transported by sea and what responders can expect when they go on-board a vessel. Graphical representation of the GESAMP hazard profile; −Hazards and risks: classification and labelling, health and environmental hazards and substance intrinsic hazards; −Emergency measures: emergency health measures, emergency measures on board of vessels, exposure safety limits, environmental protection measures and danger zones for six different spill scenarios; −Case histories: past incidents involving the substances and response used; −Physical and chemical properties: the fingerprint of the substance. The application runs offline.

About

LDM Valves

Features
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This programme is designed for calculation of Kvs/Cvs of industrial valves.

Screenshots

MAR4 screens
LDM Valves4 screens

Verdict

The call

The clearest difference is iOS requirement: MAR at 11.0 against LDM Valves's 15.3. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

MAR ships an update every 9 months, LDM Valves every 5 months. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 5 level
MAR versus LDM Valves: the parameters behind the verdict, then further details
ParameterMARLDM Valves
PriceFreeFree
Update frequencyEvery 9 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.3
Further details — not scored
Size15 MB37 MB
Age rating4+4+
DeveloperAG�NCIA EUROPEIA DE SEGURAN�A MAR�TIMA.LDM, spol. s r.o.

In-app purchases

None

MAR

No in-app purchases

None

LDM Valves

No in-app purchases

Questions

Is MAR free?
MAR is free to download, with no in-app purchases.
Is LDM Valves free?
LDM Valves is free to download, with no in-app purchases.
Do MAR or LDM Valves have ads?
Neither MAR nor LDM Valves shows ads.
Which is updated more often, MAR or LDM Valves?
MAR ships an update every 9 months, and LDM Valves every 5 months. Most recently, MAR was updated on October 26, 2026 and LDM Valves on October 28, 2026.

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