Trio Math vs GEO Flag
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Trio Math
Sharpen your mental math skills by finding number combinations that equal a target number. Each combination must use one multiplication and one addition or subtraction. Compete globally and enjoy a privacy-friendly, ad-free experience.
- Number grid puzzles
- Multiplication and addition/subtraction required
- Daily Challenge Mode
- Global Leaderboard
- Jokers for hints
- Ad-free and privacy-friendly
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Sharpen your mental math skills with Trio. Find hidden Trios in the number grid by selecting three numbers in a row and calculating their result to match the target number. Each valid Trio must include one multiplication and one addition or subtraction - no simple sums allowed. Multiple solutions exist for each target number, so think strategically and act fast to earn three stars. How to play: Find three numbers that form the target number Use one multiplication and one addition or subtraction Think creatively - brackets are allowed For example, to reach 9, you could choose: 3 × 5 - 6 = 9 5 + 2 × 2 = 9 (6 - 3) × 3 = 9 But using two additions is not allowed: 5 + 2 + 2 = 9 (No multiplication used) Features: - Daily Challenge Mode – Solve two out of three puzzles in unique game modes - Global Leaderboard – Compete with players worldwide and track your success - Jokers – Stuck? Hold a number to swap it for a Joker and find new solutions - Ad-Free, Privacy-Friendly – No ads, no data collection—just pure gameplay Trio is free to play, but if you enjoy the challenge, you can support development by unlocking the MinusTrio game mode. Whether it's the cost of an espresso or a cappuccino, your contribution helps keep the game growing. Ready to train your brain? Let’s play. 3... 2... 1... Trio.
GEO Flag
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Do you know the world’s flags well? Geo Flag is a fun and educational trivia game where you guess the country based on its flag. Perfect for geography lovers, students, and anyone who enjoys testing their knowledge! Game Features: 194 national flags to discover 20-second challenge for each question 3 lives per game – make them count! Multi-language support (English, 繁體中文, 简体中文) Track your stats and achievements Unlock rewards and become the ultimate Flag Master Challenge yourself, compete with friends, and learn fascinating facts about countries around the world. Download now and see how many flags you can recognize!
Screenshots
Verdict
The clearest difference is in-app purchases: GEO Flag at none against Trio Math's 2. Trio Math's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence, ads 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
Both are free to download. Trio Math sells 2 one-off in-app purchases. GEO Flag asks for nothing beyond the download.
Trio Math ships an update every 4 days, GEO Flag every 3 days. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.
| Parameter | Trio Math | GEO Flag |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 4 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 123 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | CHRISTIAN KNOLL | Creasant Innovision Limited |
In-app purchases
Trio Math
- MinusTrio - Espresso$1.99
- MinusTrio - Cappuccino$2.99
GEO Flag
No in-app purchases









