# POWER TUNER App — user reviews > 79 indexed App Store user reviews of POWER TUNER App by Yamaha Motor Co., Ltd., rated 3.10/5 from 80 ratings. - Source: https://appshunter.io/ios/app/power-tuner-app/id1235945328/reviews - App overview in markdown: https://appshunter.io/ios/app/power-tuner-app/id1235945328.md - Rating breakdown: 5★ 31 · 4★ 6 · 3★ 10 · 2★ 10 · 1★ 23 ## What do users think of POWER TUNER App? Overall sentiment: mixed **Pros** - 👍 Easy to use for tuning - 💡 Comprehensive maintenance log - 🚀 FI/IG tuning is amazing - 👍 App is great when it works - 👍 Adjustability is amazing - 👍 Simple and effective - 👍 Love the tuner app **Cons** - 🐛 Freezing/crashing in menus - 🐛 Connectivity issues - 🐛 App not working with iOS 14 - 🐛 ECU lock greyed out - 🐛 No power tuning for WR450F - 🐛 Maps won't upload/download - 🐛 Hour meter resets - 🐛 Language barriers (no Russian, Portuguese, Spanish, French, Chinese) - 🐛 Inconsistent connection - 🐛 GPS not working - 🐛 Speed/temperature unit conversion issues - 🐛 Bike not registering/connecting - 🐛 App crashes when downloading maps - 🐛 No support for 2023 YZ250F/FX - 🐛 Password issues for WiFi box - 🐛 RPM scale inaccurate - 🐛 WR450F specific issues **Commonly reported bugs** - FI/IG tuning menu freezes - ECU lock greyed out and shows error message - App freezes when accessing maps sub menu - Mapping edit screen is unresponsive - Cannot connect to WiFi/bike after 120 hours - App crashes when downloading maps from Yamaha - Hour meter resets when bike is turned off - App not working with iOS 14 - Cannot inject maps downloaded from Yamaha site on iOS - Cannot connect to bike on iPhone with iOS 14 - App shows no data and won't connect to bike with iOS 14 - Bike will not connect with app, shows no internet service - Cannot change maps, see hours on iOS 14.2 - App quits working after new iOS updates - Cannot sync with 2020 YZ450F since iOS 14 update - Cannot change maps since new iOS update - App won't connect due to iOS 14 - Cannot connect to 2021 250f - Does not work with iOS 14 - Cannot connect to 2020 YZ450F since phone update - App shows no data and won't connect to bike with iOS 14 - App doesn't work with iOS 14 - No funciona con IOS14 en iPhone XS - App won't connect due to iOS 14 - Unable to connect to 2020 YZ450F since phone update - App shows no data and won't connect to bike with iOS 14 - App doesn't work with iOS 14 - App works great but does NOT help start 2020 250FX - Issue with sending/receiving maps - Cannot import map to vehicle - Maps download to phone but won't transfer to app - Cannot send or receive maps on new iPhone - App does not register bike, requires re-selection on opening - Phone crashes when importing maps from Yamaha website - App will not save bike on iPhone - Cannot get bike to bring up WiFi on phone - Display is sometimes jerky **Most requested features** - Add Russian language support - Add Portuguese language support - Add Spanish language support - Add French language support - Add Chinese language support - Add ability to lock bike - Change KMH to MPH and Celsius to Fahrenheit - Record GPS data with throttle/RPM overlay - Start bike via app - Digital RPM readout option - Simple view with sliders for tuning - Add more service log entries - Make maps available in a manual within the app - Improve connection between app and smartphone ## Newest reviews (13 of 79) ### 2/5 — ECU Llck *2026-01-11* My bike has this ECU locking but the app has it greyed out and it tells me this message. “Not available Please connect to a machine that supports ECU lock.” Um my 2025 yz250f has this feature but the app is telling me otherwise!!! ### 3/5 — 没文化 *2024-04-22, version 2.2.1* 什么时候能出个中文，技校生表示看不懂 ### 4/5 — KMH TO MPH AND CELSIUS TO FERINHEIGHT *2024-02-18* Does anyone know how to change the live data screen to read in MPH instead of KMH? Also shows water temp in only “C” can’t change it to Fahrenheit ### 2/5 — Unreliable connection *2024-01-05* App would be awesome if it simply connected easily. ### 2/5 — How do I change the settings??? *2023-07-20, version 2.1.1* I think the app is really cool, and a good idea. But I cannot figure out how to cha get the setting from Celsius to Fahrenheit, or KPH to MPH. If I could figure that out, I’d be happy! ### 3/5 — GPS *2023-06-28* Would love it if the gps actually worked and you could record all of it, including throttle/ rpm. It would be awesome if I could overlay this on top of my GoPro videos ### 3/5 — we need a version in portuguese *2023-03-11* we need a version in portuguese BR ### 4/5 — Good app *2023-01-28* Like a few have said just wish you could lock your bike with the app since it doesn’t have keys, then I wish that I could change the speed from km/h to mph but other than that a great tool to have and nice to see total ride time on bike and far exceeds other manufacturers ### 3/5 — No 23 250f? *2022-12-08, version 2.0.1* Just spent 10k on a yz250f and there isn’t an option for it in the app? Is it just that new to where it’s hasn’t been added yet or what? Spending that much on a bike Ide like to be able to have all the features it’s supposed to have and not be stuck with just the one map on the bike ### 1/5 — French???? *2022-02-19, version 1.10.1* French???🤦‍♂️ ### 1/5 — A mi no me va desde la ultima actualización y no se de que será el problema *2021-12-12, version 1.10.1* Debería de salir en español ### 3/5 — Hours *2021-09-19* I think the app is really cool but every time I ride I connect my phone to the bike and leave my phone in the garage. When I’m done riding it’ll say like for example 5min but when I reconnect my bike next time I ride those 5min are at 0. Can anyone help with this ### 2/5 — UNDURE PASSWORD *2021-07-30* Purchased a used 2019 Yz250f and the password to the WiFi box is missing. No way to my knowledge of recovering it without buying a new box I was told. Is it possible to still find it? It is not on the back of the box. ## Most critical reviews (10 lowest-rated) ### 1/5 — Misnomer *2026-02-15, version 2.4.2* I have a 2025 WR450F, and there is no power tuning. Only item than can be changed is traction control. Could have added a button on the handle bar to toggle TC on/off. Pretty lame app with respect to the WR. ### 1/5 — App won’t let me change maps *2024-11-14* When I get to the fi/ig tuning menu the screen just freezes I tried deleting it and redownloading it still does the same thing ### 1/5 — 動かない。 *2024-11-06* システムレイアウト>車両一覧>マッピングリスト>マッピング編集。マッピング編集の画面が動かない。何を触っても反応なし。以前は使えてたのに急に動かなくなった。 ### 1/5 — Freezing *2024-10-30* App no longer works, app freezes every time you try to access the maps sub menu. Zero support from Yamaha and now my bike is stuck on a map I need to change ASAP. ### 1/5 — Connectivity issue *2024-07-23, version 2.3.0* I have a 2020 yz250f and I’ve used the power tuner app since I got the bike, it worked great up until about 120 hours, then I couldn’t connect to the wifi anymore… that was a two seasons ago. I have no how many hours are on my bike, and I have to guess my hours for my oil change, it’s very frustrating. I’ve deleted and updated the app and reset my phone, I’ve read multiple forums online, even called the dealership, nothings helped. The option to connect to the bike comes up in my settings, but whenever I click on it, it just loads and loads, it won’t connect, I never get the blue check mark, just a loading symbol. Can I some help please? That would be great appreciated ### 1/5 — Hi *2023-08-11* Hi ### 1/5 — 接続はできるが書き込みができない謎のエラー *2023-07-07* ちゃんとした説明書を公開してほしい。 せっかくセッティングしようと思ってもマップの書き込みが何度やってもできない。 なんなんこの機能 ### 1/5 — Yep, doesnt work *2023-07-01* Same story as everyone else, WIFI connects but won't connect to bike or allow maps to be uploaded. ### 1/5 — Not happy *2023-05-27* Can connect to my bikes wifi. Can not see hours, can not upload or download maps. I have tried to do this on 4 bikes now and have had no success. Even used different phones. Terrible service ### 1/5 — Ajuda *2022-12-12* Preciso de uma ajuda em português. Não consigo configurar o App ## Most praised reviews (10 highest-rated) ### 5/5 — Really well done, very useful. *2026-02-07, version 2.4.2* I do FAST MX, Technical MX, Supercross/Motocross, Hard Enduro/Enduro, Extreme Mudding, Sands and Dunes, and more. This app changes everything. FI/IG tuning is amazing for all this. Full maintenance log to keep track of Engine Oil, Oil Filter, and Pistons. The app tells you what to do with the Front and Rear Forks for straight big jumps all the way to Down Hill—many in between. I’m tearing my bike down for a rebuild and powder coating, so far haven’t used the app on the bike yet but I’ll update this review once I do. So far I have made many tuned for what I do and it was very easy to do, yet the mathematical knowledge of bikes you need, needs to be big—tuning is complex, but easy to use app. So far, 10/10, 5 stars from seeing and using the app. ### 5/5 — Язык *2026-01-31, version 2.4.2* Добавьте пожалуйста, умоляю русский язык , прошу 😭 ### 5/5 — Excellent *2023-11-21* This does the job! Take the time and effort to learn how it works. ### 5/5 — 使いやすい、日本語OK *2023-02-25* アップデートされて日本語にも対応している。 アプリも使いやすくて良い ### 5/5 — no support in app for 23’ yz250fx *2022-11-27* I can connect to Wi-Fi on my phone and when selecting the bike the app doesn’t have a 2023 correspondent. Needs update I’m assuming or app just won’t work at all cus after connecting to Wi-Fi my bike doesn’t register. ### 5/5 — doesn’t save hours *2022-09-03, version 1.10.2* whenever the bike is turned off the hour meter on the app resets it should save the information ### 5/5 — Yamaha *2021-12-04, version 1.10.1* Adjustability is amazing. Yamaha, keep the updates coming! ### 5/5 — Best thing ever *2021-07-14* Only it would be cool if you could switch to a kind of simple view with sliders where you change power characteristics less technical. ### 5/5 — Please *2021-02-08* Make it we’re you can start the bikes up on the app 2021 yz250f ### 5/5 — Plz can you do this!!! *2020-10-02* Yamaha Can you do a future that you can turn on your bike through the app or shut it off because they don’t have keys. YZ450F 2021 software. --- *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 2026-08-25.*