iro vs Flapstack
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
iro
Engage in a minimalist color-based game designed for mindfulness and relaxation. Solve daily color-matching puzzles, train your visual perception, and create personal color palettes inspired by prompts, all within a peaceful, distraction-free environment.
- Daily color matching puzzles
- Visual perception training
- Personal color journaling
- Community gallery
- Distraction-free interface
- Calming gameplay
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iro is a daily color game. One shared challenge for the whole world, four short games, new colors every day. A full day's play takes a few minutes. flow: Today's colors, shuffled. Slide them around until every shade sits where it belongs—two gradient strips, then a mosaic. match: Three sliders—red, green, blue. Mix until your color matches today's target. You get one try, and the difference between 94 and 99 will keep you coming back. remember: A color appears for a few seconds, then it's gone. Pick it out of a grid of very close shades. Your eyes are better at this than you'd expect. compose: Each day brings one word: "Meadow", "Tangerine", "Hopeful". Think of a memory that word brings back, then build a three-color palette from the feeling. Palettes save to your own journal, and the Gallery shows what everyone else made of the same word today. A few things we care about: • No streaks, no penalties, nothing to keep up with. Miss a day, nothing happens. • Leaderboards for match, remember and flow. Follow friends and see how you compare. • Share a score or palette with a tap. • Free to play. New colors arrive at the same moment for everyone, worldwide.
Flapstack
A daily pancake sorting puzzle where you flip stacks to achieve a specific order. Compete against a daily par and other players' results without timers or levels.
- Daily pancake sorting challenge
- Flip pancakes to order stack
- Compete against daily par
- Spoiler-free result grid for sharing
- Unlimited practice stacks (Griddle)
- Replay optimal solution
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One stack of pancakes a day. Same stack for everyone. Flip it into order. Tap a pancake to slide the spatula under it and flip it together with everything above. Get the smallest on top and the largest at the bottom in as few flips as you can. Every day has a par, the fewest flips that can possibly do it, and you have par plus three before the day is lost. Flapstack is a sorting puzzle you can hold in your head: no timer, no lives, no levels to grind. Just one honest stack each morning, a number to beat, and a grid to share that shows how your day went without giving anything away. WHAT MAKES IT STICK • A par streak and a play streak. Matching par keeps the one that matters. • A result grid that tells the story of your flips, spoiler-free, ready for the group chat. • "You beat 63% of today's players", once enough people have played. • After the daily: the Griddle. Unlimited practice stacks with exact par, and a hint when you are stuck. • Watch the perfect stack: replay the optimal line, flip by flip. The stacks change through the week, from a friendly seven on Monday to a proper nine on Sunday. A short stack can still be a hard one: par is computed by exhaustive search, so it is always the true minimum. Play the same daily on the web at flapstack.app. Streaks and stats live in the app. Flapstack shows ads. There are no accounts and nothing to sign up for.
Screenshots
Verdict
The clearest difference is ads: iro at none against Flapstack's shown. iro also leads on ratings volume (40 vs 3) and monetization model (free vs ad-supported). On price, rating, update cadence 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for iro against 5.0 for Flapstack. That said, the two scores are not equally well evidenced: iro has 40 ratings behind it against 3, so its average is the more settled of the two.
iro ships an update every 4 days, Flapstack every 3 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | iro | Flapstack |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (40 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 40 — better | 3 |
| Update frequency | Every 4 days | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 43 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | DOMU Inc. | Chris Bosch |
Customer experience
iro
Flapstack
In-app purchases
iro
No in-app purchases
Flapstack
No in-app purchases









