Coordinate Master vs OSARC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Coordinate Master
Convert coordinates between over 1700 global systems using PROJ4 library. Supports various formats including lat/lon, UTM, and national grids. Can use GPS or photo data for input.
- 1700+ coordinate systems
- PROJ4 library integration
- Supports lat/lon, UTM, national grids
- Custom coordinate system support
- GPS location input
- Photo coordinate extraction
Read full descriptionHide full description
Coordinate Master is one of the most powerful map coordinate converters available. It uses the PROJ4 library and a lookup file containing projection and datum parameters to allow conversion between more than 1700 coordinate systems from around the world. Lat/lon, UTM, US coordinate systems (including US State Plane), Australian coordinate systems (including GDA2020), UK coordinate systems (including British National Grid) and many, many others are supported. Custom coordinate systems can be added and affine parameters are supported for adding local grid systems. The app can use manually entered coordinates, your current GPS location, or get the lat/lon coordinates from a photo.
OSARC
Read full descriptionHide full description
The Mississippi Office of State Aid Road Construction (OSARC) Directory App is your go-to source for comprehensive information about engineers across all 82 counties in Mississippi. This app offers convenient access to public data, allowing users to search for engineers by county, district, or name. About OSARC: The Office of State Aid Road Construction (OSARC) plays a crucial role in maintaining Mississippi's road infrastructure. It administers the State Aid Road Program, assisting all 82 counties with the construction and maintenance of secondary, non-state owned roads and bridges. Additionally, OSARC oversees the Local System Bridge Replacement and Rehabilitation Program, targeting the repair or replacement of Mississippi's most needy bridges. The office is also responsible for managing special projects funded through the Federal Highway Administration (FHWA) and the Mississippi Development Authority. In its broad scope of responsibilities, OSARC administers the FHWA's National Bridge Inspection and Inventory program for approximately 11,000 county and locally owned bridges in the state. This app not only provides a wealth of publicly available OSARC information at your fingertips but also offers a direct link to the official OSARC website for more detailed resources and updates.
Screenshots
Verdict
The clearest difference is price: OSARC at Free against Coordinate Master's $3.99. Coordinate Master's advantage is update cadence (fortnightly vs every 6 months). On ads, in-app purchases, device support and iOS requirement 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
OSARC is free to download; Coordinate Master costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Coordinate Master ships an update fortnightly, OSARC every 6 months. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.
| Parameter | Coordinate Master | OSARC |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.4 (5 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Fortnightly — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Anthony Dunk | Mississippi State University Extension Service |
In-app purchases
Coordinate Master
No in-app purchases
OSARC
No in-app purchases
Questions
Is Coordinate Master free?
Is OSARC free?
Do Coordinate Master or OSARC have ads?
Which is updated more often, Coordinate Master or OSARC?
Other comparisons















