NumPrime vs Flow By!
Price, ratings, monetisation and update history for both games, side by side โ with what reviewers say about each.
NumPrime
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NumPrime blends mathematical thinking with block-puzzle gameplay for an engaging, brain-teasing experience. Master the art of prime numbers while enjoying a strategic game that challenges your mind. HOW TO PLAY 1) Merge blocks with equal numbers and pop them to earn points. 2) Guide the falling block with the left and right controls. When needed, use the add (+) and subtract (โ) buttons to change the number on the block you land on and create matches. 3) Falling blocks contain random numbers from 1 to 47. Blocks with prime numbers appear blue; the others appear red. 4) Merging and popping prime-number blocks earns extra points โ and the special prime number 2 rewards you even more. 5) Once you decide where to drop a block, tap the down arrow to drop it instantly instead of waiting. KEY FEATURES - Easy to learn, hard to master โ clean and intuitive gameplay - Math-puzzle mechanics focused on prime numbers - Global leaderboard to compete with players worldwide - Increasing difficulty as the game speeds up - Fully game-focused, ad-free experience - Multilingual support (English, Turkish) PERFECT FOR - Math lovers who enjoy number-based puzzles - Players looking for educational fun - Anyone seeking a relaxing yet mentally stimulating game - Students who want to sharpen their number-recognition skills Experience the satisfaction of mathematical discovery through strategic puzzle-solving. NumPrime offers endless replayability as you chase higher scores and climb the global leaderboard. Download NumPrime now and explore the fascinating world of prime numbers!
Flow By!
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A pixel picture hangs above three roads. A lot full of vans waits underneath. Clear the picture and the level is yours. Tap a van and it pulls out the way its arrow points and joins the traffic. As it drives past the picture it rains balls of its own colour, and every pixel of that colour in its line breaks off and goes. The number on the roof is the ammo it carries. When the ammo runs out the van leaves the road and frees its place. So every tap asks two questions at once. Can this van get out of the jam, and does the picture still hold its colour where it is going? Three one way roads run past the picture: one up each side, one across the bottom. Each road holds three vans. A full road refuses you, and nothing brings a van back once it is out. Free them in the wrong order and the picture is still standing when the lot is empty. WHAT IS IN IT A picture to clear in every level, pixel by pixel, colour by colour. Vans that block each other in, so the order you free them is the whole puzzle. Grey vans in the harder levels, which hide their colour until the van in front of them leaves. A light at every road entrance: green for room, amber for one place, red for full. One tap control, one hand, no timer. Think as long as you like. If you like parking jam puzzles, colour matching, and a board that empties in a satisfying way, this is all of that in one screen.
Screenshots
Verdict
The clearest difference is update cadence: Flow By! at every 2 days against NumPrime's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
NumPrime ships an update every 6 weeks, Flow By! every 2 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.
| Parameter | NumPrime | Flow By! |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 2 days โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 โ better |
| Further details โ not scored | ||
| Size | 34 MB | 108 MB |
| Age rating | 4+ | 4+ |
| Developer | Samed KIZILHAN | Fuat Can Koseoglu |
In-app purchases
NumPrime
No in-app purchases
Flow By!
No in-app purchases









