NumFlow vs Fill the Jar
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
NumFlow
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NumFlow is a relaxing number puzzle game designed to challenge your logic while keeping the experience simple and satisfying. Swap numbers, place them in the correct order, and complete each unique puzzle. Features: • 1,000 handcrafted-style levels • Unique shapes and puzzle layouts • Relaxing animations and sounds • Helpful hints when you need them • Light and dark themes • Multiple language support • Smooth zoom and navigation for larger puzzles Start simple and progress through increasingly challenging number puzzles. Can you complete the flow?`
Fill the Jar
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A little space. A perfect fit. Fill the Jar is a relaxing shape puzzle with a simple goal: fit every piece into the jar without leaving gaps. Choose a wooden block, rotate it, and find its place inside a clear glass jar. Rectangles, triangles, parallelograms, and other shapes turn each level into a fresh challenge. FIND YOUR FIT • Tap a piece to see arrows marking available landing spots. • Rotate pieces before placing them. • Drag exposed blocks sideways inside the jar—they settle into free space below. • Tap a clear block to return it to the tray, or use Undo to try again. REVEAL A PICTURE Add an optional picture theme and watch an illustration emerge as you fill the jar. Picture fragments offer visual clues, while shape and geometry still determine the fit. EXPLORE PICTURE PACKS • Animals: Woodland Fox, Tiger, Polar Bear, Bald Eagle, and Zebra. • Landscapes: Alpine Lake and Sunset Coast. • Vehicles: Vintage Train and Red Roadster. Unlock a pack with earned coins, then unlock and activate individual pictures. Each picture can be used across levels, and you can switch back to plain wood whenever you like. PLAY AT YOUR OWN PACE Enjoy 100 puzzle levels with no timer. Earn coins by completing jars, and use them for hints, solutions, or picture themes. A short guided tutorial helps you get started. OPTIONAL REWARDS Eligible players can choose to watch rewarded ads for coins, hints, or individual picture unlocks when ads are available. Occasional ads may also appear between levels. Core puzzles work offline. Ads and optional shared coin transfers require an internet connection. Puzzle progress is saved on your device. AGE-APPROPRIATE PLAY A birth-year declaration stored on your device tailors optional online features. Younger players can enjoy every puzzle and earn coins through play without ads or shared coin transfers. Made by Neurantra.
Screenshots
Verdict
The clearest difference is in-app purchases: Fill the Jar at none against NumFlow's 4. Fill the Jar also leads on update cadence (daily vs every 4 days). On price, ads, device support and iOS requirement 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. NumFlow sells 4 one-off in-app purchases. Fill the Jar asks for nothing beyond the download.
NumFlow ships an update every 4 days, Fill the Jar daily. The most recent releases landed on October 9, 2026 and October 29, 2026 respectively.
| Parameter | NumFlow | Fill the Jar |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days | Daily — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 152 MB |
| Age rating | 4+ | 4+ |
| Developer | Mustafa Ofluoglu | Neurantra LLC |
In-app purchases
NumFlow
- 50 Hints$4.99
- Remove Ads$7.99
- 100 Hints$8.99
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- 300 Hints$14.99
Fill the Jar
No in-app purchases









