Fill the Jar vs Slackwire
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
Slackwire
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Slackwire is a puzzle about joining cables into loops. Every loop plays music. The board is a panel of cut cables bolted to a plate. Tap a piece of cable and it swings. Bring two cut ends together and they join. Close a whole run and a spark sets off around it, playing one note for every cell it crosses. A loop's shape decides its melody. Where it sits decides how high it sounds, and the number of cells it covers is the length of its phrase. Two loops of different lengths drift against each other and come back together. While you work, the loose ends crackle on their own, in the key of the room you're in. Close a loop and the notes that were already sounding fall into rhythm. WHAT'S IN IT Eight rooms. Each has its own scale, reverb, cable colors and set of four instruments. You move to a new one every few panels. Panels that grow. The first is a single ring of four pieces. Later ones tangle, and once the plain board is familiar, cables start to cross over each other. No score, no timer, no way to lose. No notifications and no streaks. Put it down in the middle of a panel and nothing is spoiled. No account, no analytics, no internet. It works on a plane. PRICE Slackwire is free, with no ads and nothing locked.
Screenshots
Verdict
The clearest difference is ads: Slackwire at none against Fill the Jar's shown. Fill the Jar's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, 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.
Both ship on a similar rhythm, roughly daily. Both last shipped on October 31, 2026.
| Parameter | Fill the Jar | Slackwire |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily | Daily |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 152 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Neurantra LLC | Kevin Spence |
In-app purchases
Fill the Jar
No in-app purchases
Slackwire
No in-app purchases





