# Light This Up — user reviews > 19 indexed App Store user reviews of Light This Up by KOOAPPS INC., rated 3.33/5 from 45 ratings. - Source: https://appshunter.io/ios/app/light-this-up/id664439946/reviews - App overview in markdown: https://appshunter.io/ios/app/light-this-up/id664439946.md - Rating breakdown: 5★ 23 · 4★ 3 · 3★ 1 · 2★ 2 · 1★ 16 ## Newest reviews (1 of 19) ### 1/5 — Not a circuit game at all. *2018-02-23, version 1.5.9* The game didn’t cover ohms law or have resistors in parallel. Current flow is is fundamental in circuit design. The developers demonstrate a poor understanding of that an amplifier is. Maybe they should incorporate zener diodes, resistors with different wattages, LEDs as well as lamps, relays, and some logic gates. ## Most critical reviews (10 lowest-rated) ### 1/5 — iPhone 12 Broken App *2023-01-14, version 1.5.9* App does not work correctly on iPhone 12 please fix this issue. ### 1/5 — Does this work for anyone else? *2022-12-17, version 1.5.9* I used to play this a while ago. Stopped then re-added it. Tried to play and it’s stuck on the first instruction page ### 1/5 — Buggy *2022-10-31, version 1.5.9* Can’t even get past the tutorial. Won’t let me make any wires to connect anything to anything, and I can’t skip the tutorial ### 1/5 — Broken on iPhone 11 Pro *2021-04-30, version 1.5.9* This app is badly in need of an update and should be removed from the App Store and recent purchases refunded. I can’t even get past the first tutorial screen because it doesn’t register touch events correctly. ### 1/5 — Doesn’t work? *2021-01-06, version 1.5.9* I have an iPhone 12 mini, and no matter what I cannot get past the intro screen. ### 1/5 — Abandoned App. *2020-12-31, version 1.5.9* Was great while it worked, but has not been updated in 3+ years and is no longer functional. Don’t bother downloading until there is an update. ### 1/5 — How to play this game? *2020-09-01, version 1.5.9* Why It’s not working on my iPhone 11 Pro Max. I just purchased the app and been trying to follow what the written instructions telling me to do but it’s doing anything. ### 1/5 — Does not seem to work *2020-09-01, version 1.5.9* The first screen you are shown is a tutorial that tells you to draw wires between components. It is not possible to draw a wire on the screen. iPhone 8+ running 13.6.1 ### 1/5 — Bad start *2019-11-02, version 1.5.9* I bought the the game and can’t even get it to work. Very disappointing ### 1/5 — Falsely Advertised *2018-03-04, version 1.5.9* Has nothing to do with circuits except in appearance. It’s just a simple addition/subtraction puzzle game. All you do is draw a path through a grid full of “components”. The “components” do not behave like real world components. It has almost no educational value in electronic engineering. ## Most praised reviews (8 highest-rated) ### 5/5 — Fun puzzle game that teaches about electric current. *2019-02-10, version 1.5.9* Educational, yet doesn’t compromise the fun factor. ### 5/5 — So fun & educational! *2018-12-16, version 1.5.9* I’ve always wanted to learn to read a schematic & it’s never been more awesome! ### 5/5 — Fun app *2018-11-15, version 1.5.9* I want to learn about electronics and found this app. It helps learning the symbols found in schematic. ### 4/5 — Light it up *2017-11-23, version 1.5.9* Good math skill game, though sot of misleading re use of resistors in a lighting circuit. Resistors are not rated by voltage, but by ohms (and to lesser extent, wattage - which simply specifies the amount of current which may pass through it). In real life, the larger the secondary resistance in the series circuit, the dimmer the lamp. That said, I'm enjoying the game and think it would be great for kids. Learning about circuits is darn important. ### 3/5 — Can’t get past first screen? *2023-01-21, version 1.5.9* Drawn line from power supply to lamp to ground…. Doesn’t work ### 3/5 — Well *2017-04-19, version 1.5.8* If you know how to calculate numbers, it becomes boring very fast. Anyways it's good to play without data/wifi. ### 2/5 — Super fun game, not maintained *2020-10-27, version 1.5.9* I loved this so much. My son found a game like this through his school so I reinstalled it on my phone to show him. Unfortunately it does not run on iOS 14. The scaling is off and I wish I could recalibrate the input in app so I could play it again. PLEASE FIX THIS FUN GAME! ### 2/5 — clunky math slog *2018-01-22, version 1.5.9* Wanted to like this, but it ain't even worth the two bucks. Only electronics-inspired and not very much like real circuitry, you basically just draw paths to complete larger and larger arithmetic puzzles. Better as an education app. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*