Geomulator vs Coordinate Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Geomulator
Quickly calculate unknown values for common 2D shapes like squares, circles, and triangles. Supports various angle input formats and customizable decimal places for accurate results.
- Calculate common 2D shapes
- Solve geometry equations accurately
- Input angles in radians, decimal degrees, or DMS
- Select number of decimal places
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Solve planar shapes fast! Geomulator is a geometry calculator that will help you quickly find unknown values for a variety of common 2D shapes: square, rectangle, circle, ellipse (oval), triangle, right triangle, trapezoid. Features Include: - Accurately solve geometry equations - Enter angles in radians, decimal degrees or degrees, minutes, seconds (DMS) - Select your preferred number of decimal places
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
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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.
Screenshots
Verdict
The clearest difference is review sentiment: Coordinate Master at 83% against Geomulator's 0%. Coordinate Master also leads on rating (4.4 vs 1.0) and update cadence (fortnightly vs every 14 months). Geomulator's advantage is price ($1.99 vs $3.99). On ads, in-app purchases, monetization model 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
Geomulator costs $1.99 and Coordinate Master $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Coordinate Master holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Coordinate Master has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Geomulator's written reviews are positive against 83% of Coordinate Master's.
Geomulator ships an update every 14 months, Coordinate Master fortnightly. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.
| Parameter | Geomulator | Coordinate Master |
|---|---|---|
| Price | $1.99 — better | $3.99 |
| Rating | 1.0 (1 ratings) | 4.4 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | 83.3% of reviews — better |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 14 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Armchair Engineering | Anthony Dunk |
Customer experience
Geomulator
Coordinate Master
In-app purchases
Geomulator
No in-app purchases
Coordinate Master
No in-app purchases
Questions
Is Geomulator free?
Is Coordinate Master free?
Which has better reviews, Geomulator or Coordinate Master?
Do Geomulator or Coordinate Master have ads?
Which is updated more often, Geomulator or Coordinate Master?
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