Dropbound vs Solid Sudoku
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Dropbound
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Set the switches. Press DROP. Rescue every critter, in the right order. Dropbound is a puzzle played in glass pipes. The ball waits at the top behind a gate. Below it, one pipe splits at switches into a tangle that weaves over and under itself, and critters sit trapped in bubbles under its exits. Set the route, then drop. One ball frees one critter. Free them all before your balls run out. HOW TO PLAY - Tap a switch to choose which way it sends the ball - Press DROP when you are ready. There is no timer and nothing to time - Reach a critter and its bubble pops. End anywhere else and the ball is spent WHO GOES FIRST? Every critter is on the board from the start, and you choose the order. From board 16, flip switches can't be tapped: every one of them turns at the end of every drop, wherever the ball went. So each rescue changes which critters you can reach next. Free the wrong one first and you may need your spare ball. Every board can be cleared with one ball per critter. 300 BOARDS One switch on board 1, seven exits later on. Blocked pipes from board 11: two pipes to the same critter, and a cork in one of them. Two ways into one critter from board 21. Teleports from board 31: drop into the hole and come out of a bent pipe somewhere else. THREE STARS Every board has three to earn: cleared, first try, and fewest balls. DAILY BOARD One board a day, the same for every player. One try. Keep your streak and share your result. CRITTERS, MISSIONS AND BALLS Six species to rescue and collect, and golden critters to find. Three missions at a time: finish the set to level up and earn a new ball. NO LIVES, NO TIMER Out of balls? Try again straight away. Coins are earned by clearing boards and buy an extra ball when you want one. No accounts. Plays offline. No gambling and no in-app purchases. Anonymous analytics you can switch off. Download Dropbound and rescue your first critter today.
Solid Sudoku
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A simple Sudoku game. I built it for myself and my family to enjoy together. No excessive ads during gameplay—just a quiet, comfortable space to focus on the puzzle. To support healthy screen habits for kids, the app includes Parent Settings. When you first install the app, a parent can set: - How many rounds can be played - A waiting time between rounds This helps children naturally build the habit of self-control. Your play records are also saved, so you can look back after finishing a game and keep the fun going. [Why Sudoku is great] - Improves logical thinking - Strengthens concentration - Develops problem-solving skills - Trains memory - Enhances number sense Short sessions, deep focus. Enjoy a healthy brain game that the whole family can play together.
Screenshots
Verdict
The clearest difference is update cadence: Solid Sudoku at every 3 days against Dropbound's every 9 days. 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.
Dropbound ships an update every 9 days, Solid Sudoku every 3 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.
| Parameter | Dropbound | Solid Sudoku |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 days | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 76 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | DevCraft | Sooyeol Jeong |
In-app purchases
Dropbound
No in-app purchases
Solid Sudoku
No in-app purchases









