Join4 for iMessage vs Diagonal Duel
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Join4 for iMessage
Challenge friends in a classic connect four game directly through iMessage. Strategically place your colored counters to be the first to achieve four in a row and win the game.
- Play via iMessage
- Turn-based gameplay
- Strategic counter placement
- Challenge friends
- Connect four win condition
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Can you Join4? Challenge your friends over iMessage to see who can be the first to connect 4 of their coloured counters! Take it in turns to place counters, strategically blocking each other until one of you finds a way to win!
Diagonal Duel
Engage in a strategic board game similar to Connect Four, but with a unique 45-degree rotated board. Challenge a computer opponent, play with a friend on the same device, or compete in online ranked matches.
- 45-degree rotated board gameplay
- Play against AI (levels 0-100)
- Local two-player mode
- Online ranked matches
- Similar to Connect Four
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Diagonal Duel against a level 0-100 computer, with two players on the same device, or in ranked online games! Diagonal Two Squared is a game similar to Connect Four but essentially with the board rotated at 45 degrees. This allows for play on two "sides" from the start instead of the original game, on which you only play only along the bottom. The app allows for two players to play on the same device, to select a level from 0 to 100 computer to play against, or to play against random opponents.
Screenshots
Verdict
The clearest difference is review sentiment: Diagonal Duel at 86% against Join4 for iMessage's 38%. Diagonal Duel also leads on price (Free vs $0.99) and rating (4.8 vs 2.3). Join4 for iMessage's advantage is ads (none vs shown). On in-app purchases 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
Diagonal Duel is free to download; Join4 for iMessage costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Diagonal Duel holds the better App Store score, 4.8 against 2.3. That said, the two scores are not equally well evidenced: Diagonal Duel has 20 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 38% of Join4 for iMessage's written reviews are positive against 86% of Diagonal Duel's.
Join4 for iMessage ships an update every 59 months, Diagonal Duel every 2 weeks. The most recent releases landed on September 29, 2026 and September 27, 2026 respectively.
| Parameter | Join4 for iMessage | Diagonal Duel |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 2.3 (3 ratings) | 4.8 (20 ratings) — better |
| Positive reviews | 37.5% of reviews | 85.7% of reviews — better |
| Number of ratings | 3 | 20 — better |
| Update frequency | Every 59 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 5 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Cotton | Brian Savidge |
Customer experience
Join4 for iMessage
Diagonal Duel
In-app purchases
Join4 for iMessage
No in-app purchases
Diagonal Duel
No in-app purchases
Questions
Is Join4 for iMessage free?
Is Diagonal Duel free?
Which has better reviews, Join4 for iMessage or Diagonal Duel?
Do Join4 for iMessage or Diagonal Duel have ads?
Which is updated more often, Join4 for iMessage or Diagonal Duel?
Other comparisons
