Arf Blocks vs OJ Memory
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Arf Blocks
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Arf Blocks is a calm, offline block puzzle. Drag one of three pieces onto a 10×10 grid, fit them in, and clear full rows or columns to score. No ads. No tracking. No accounts. No in-app purchases. No sneaky microtransactions disguised as "coins". The game works with your device in airplane mode, and nothing you do ever leaves it. Fourteen piece shapes cycle through a weighted bag so the flow stays interesting — you get the shapes you need just often enough. Clear multiple lines at once for a growing bonus. When nothing fits, the game ends cleanly. Features • A 10×10 grid and fourteen classic puzzle shapes • Three pieces in the tray; choose your order • Exponential bonus for clearing multiple lines in a single placement • Game state saves automatically — pick up exactly where you left off • Full haptic feedback on placement and line clears • Dark, calm, distraction-free interface • Sound is off by default • Portrait on iPhone, all orientations on iPad • Works offline, always Privacy Arf Blocks collects nothing about you. There are no analytics, no crash reporters, no third-party SDKs, no identifiers sent anywhere. Your score and game state live only on your device. Read the full policy: https://arf-blocks.nl/privacy/ Support Questions, bugs, or feedback: arf-blocks@lambda-m.nl
OJ Memory
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OJ Memory is a simple and colorful memory game for kids ages 3–9. It is designed to be easy to understand, quick to start, and fun to play again and again. Kids can choose from Vehicles, Space, Sports, Animals, Food, and Plush Toys, select the number of cards, turn over two cards at a time, and try to find matching pictures. The game features clear images, calm transitions, and a leaderboard for every level so the family can follow progress. Six categories with 15 clear pictures in each Multiple difficulty levels with different numbers of cards A leaderboard for every level Medals for 1st–3rd place A record celebration when the player beats the best time Optimized for iPhone, iPad No ads No sign-in No in-app purchases No data stored outside the device OJ Memory is especially well suited to younger children who want to practice memory, recognition, and concentration in a safe and uncluttered game.
Screenshots
Verdict
The clearest difference is update cadence: OJ Memory at every 2 days against Arf Blocks's fortnightly. Arf Blocks's advantage is iOS requirement (17.0 vs 26.0). On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Arf Blocks ships an update fortnightly, OJ Memory every 2 days. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.
| Parameter | Arf Blocks | OJ Memory |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 4 MB | 112 MB |
| Age rating | 4+ | 4+ |
| Developer | Lambda M BV | Jonas Hedberg |
In-app purchases
Arf Blocks
No in-app purchases
OJ Memory
No in-app purchases









