Geometry Calculator++ vs FlagBuilder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Geometry Calculator++
This app helps you solve for the parameters of various geometric shapes and visually draws them. It supports multiple triangle types, squares, rectangles, circles, and regular polygons. Available for iPhone and iPad with a single purchase.
- Solves geometric parameters
- Draws geometric shapes
- Supports triangles, squares, rectangles, circles, and polygons
- Universal app for iPhone and iPad
- Single purchase
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Geometry Calculator++ is a universal app that runs on your iPhone and iPad with a single purchase. It helps you solve for the parameters of geometrics shapes. It draws them as well. Currently the following shapes are available: - Right Triangle - Isosceles Triangle - Rectangle - Square - Circle - Regular Polygon - Rhombus
FlagBuilder
Test your knowledge of world flags by recreating them layer by layer. Select continents to focus your challenges and learn about countries presented in a random order. Correctly assemble each flag to win.
- Select continents for custom games
- Recreate flags layer by layer
- Randomized country order
- Lifeline system for incorrect guesses
- Progress tracking through correct answers
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Can you build the flags of the world? START GAME Choose one or more continents you want to include in your game. The countries are presented one at a time in random order. THE GAME Each flag consists of two layers and any symbol as a third layer. You choose one option per layer to recreate the flag correctly. When you guess right, the next country is presented until you have gone through all the countries. You win when you respond correctly to everyone. RULES OF THE GAME If you respond incorrectly to a layer, it is highlighted with red. You then have the opportunity to change your choice for that layer. You get this opportunity up to three times per game. If you answer errors and have used all lifelines, you lose.
Screenshots
Verdict
The clearest difference is price: FlagBuilder at Free against Geometry Calculator++'s $2.99. FlagBuilder also leads on rating (4.6 vs 3.4). On ratings volume, 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
FlagBuilder is free to download; Geometry Calculator++ costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
FlagBuilder holds the better App Store score, 4.6 against 3.4. Both are backed by a comparable volume of ratings — 5 and 9 respectively.
Geometry Calculator++ ships an update fortnightly, FlagBuilder every 10 days. Both last shipped on November 3, 2026.
| Parameter | Geometry Calculator++ | FlagBuilder |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.4 (5 ratings) | 4.6 (9 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 | 9 — better |
| Update frequency | Fortnightly | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15 — better | 15.4 |
| Further details — not scored | ||
| Size | 1 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Dogahe | Shape Labs AB |
Customer experience
Geometry Calculator++
FlagBuilder
In-app purchases
Geometry Calculator++
No in-app purchases
FlagBuilder
No in-app purchases
Questions
Is Geometry Calculator++ free?
Is FlagBuilder free?
Which has better reviews, Geometry Calculator++ or FlagBuilder?
Do Geometry Calculator++ or FlagBuilder have ads?
Which is updated more often, Geometry Calculator++ or FlagBuilder?
Other comparisons
