# SwingTool - Swing Weight — user reviews > 24 indexed App Store user reviews of SwingTool by Sten Kaiser, rated 4.20/5 from 17 ratings. - Source: https://appshunter.io/ios/app/swingtool-swing-weight/id408209116/reviews - App overview in markdown: https://appshunter.io/ios/app/swingtool-swing-weight/id408209116.md - Rating breakdown: 5★ 11 · 4★ 2 · 3★ 2 · 2★ 0 · 1★ 2 ## Newest reviews (9 of 24) ### 5/5 — 4 grand cheaper than an RDC.... *2016-06-26, version 2.0* Excellent app, works very consistently if care is taken to input correct racket data. Awesome. ### 5/5 — Golf *2016-06-20* Just started to use the app. Think it may serve the purpose. Wish there was more detailed info regarding golf club measurements. May just take time on my part-4 stars. 2nd post-spent a few hours with the Swingtool. Very repeatable and consistent. Contacted developer with questions regarding use and points of measure-received response next morning 5 stars. ### 5/5 — Awesome app for customization *2015-12-03* This app is spot on and takes the guesswork out of matching any kind of racquets, golf clubs or bats. I’ve compared the results to manually measuring my racquets, and it always nails my 6 attempt average, so it’s definitely accurate. when I first downloaded the app, it kept crashing, so I emailed the developer, and he got back to me within minutes. Turns out the issue was on my end. After I re-installed it works perfectly! ### 5/5 — Physics Rocks! *2015-08-01* Very cool app. Allowed me to bring my two tennis racquets into exact alignment. I'm stickler for accuracy and this app is awesome. Tennis racquets don't come from the factory with the same weight or swing weight. This app helped me fix that. ### 5/5 — This great app keeps nagging me for a review *2015-02-05, version 2.0* I'm surprised that nobody has put one in already. It does what it says on the tin and works very well. Before this app came out you would have needed either a very expensive RDC machine or supernatural skills of the stopwatch in order to achieve the same results. Suggested improvements would be: -voice command to start the measurement, possibly from the preview screen so that you are less likely to accidentally move your iPhone by pressing a button on the screen -should hold a database of rackets similar to the RacquetTune app, so that you only have to put in the length information once. - It should automatically calculate the various other figures proposed by Travlerajm. ### 5/5 — Accurate readings *2014-06-16* Great app. Easy to use, very accurate readings. ### 5/5 — Great way to measure sw easily and accurately *2014-05-04* Great app. Hardest part is setting up a jig to swing the racquet. Once that is done, this app does the rest. Works very well and I use it to measure all my racquet swing weights. If you like raquetune, you will like this app too although it has not had a recent beautification like rt has. ### 5/5 — 貴重 *2012-10-22* 大体ショップで計測した値と同じぐらいの数値が出てます。スウィングウェイトが計測出来る装置はショップでもあまり置いてないし貴重です。 ### 5/5 — Pretty cool device! *2012-06-04* Amazing app. I compared the swingweight number I received on the app with the swingweight that the Babolat RDC machine registered and the difference was only 1pt, which is virtually the same. You have to know the racquets static weight and balance pt, but you can easily calculate those with a postal scale and an inexpensive balance board. Fantastic app...well done! ## Most critical reviews (10 lowest-rated) ### 1/5 — App crashes *2026-02-15* App crashes upon opening. Doesn’t work. Apple should take off their approves app list site. ### 1/5 — Awful app *2020-08-23* It’s very hard to use and the error messages are not clear enough. ### 1/5 — Terrible waste of money. *2019-01-08, version 2.1* Waste of money the app shows no info how to use it and is far to complex to use, the pictures the developer puts up are deceiving as well to make it “look” easy to use. Go to your tennis store and ask for a swing weight at least you know it should be reliable. ### 3/5 — Okay *2021-04-22* When used properly I think it is pretty accurate but the app sometimes gives fluctuating swingweight numbers at times despite same numbers inputed ### 4/5 — Benchmarks are very important *2016-05-30* This tool sets a reference point. When things change, measure again and compare to benchmark. Start here to eliminate variables that could be the cause. ### 5/5 — Works really well! *2025-09-07* I downloaded this app because I wanted to tune my tennis racket without spending $300 on a swing weight machine. I found it to be very accurate and easy to use. However, the instructions on how to use it are lacking, so I recommend watching the only YouTube video that talks about this app to help you get started. Look for the video from the channel “No Limit Tennis” titled "How to Measure Swingweight Without a Machine." This should guide you through the setup process. Overall, I have been very pleased with the app! ### 5/5 — A nice addition for this tool *2023-10-11* Nice addition this tool would be to manually input seconds to check formula. ### 5/5 — Great value! *2022-01-05* Excellent inexpensive app for measuring swing weight of tennis racquets. ### 5/5 — Insane *2021-04-14* Dude wthell this app is the only way for us recreational players to mesure swingweight without spending hundreds of dollars in a hefty machine!!! 5 stars easyy Pretty accurate (+/- 3 kg/cm2), easier than recording and counting time lapses on a computer. Thanks to prospect customization for letting me know such a good app ### 5/5 — Great tool - very accurate *2019-11-03, version 2.1* Works great, measured the swingweight of two tennis racquets and got resuts that were within 1 or 2 points of the results I got from a Prince machine. I highly recommend this app. ## Most praised reviews (5 highest-rated) ### 5/5 — Swingweight!!! *2019-09-21* Best swingweight tool! Buy it! ### 5/5 — Excelent *2019-06-11* Simplify your tenis racquet customization. ### 5/5 — Swingweight App *2019-05-08* After constructing a stand to suspend racquets, I started using this application extensively. I then imported a swingweight machine from the UK. The readings where always close, but when averaged they where exactly the same! This application is outstanding! ### 5/5 — Excellent *2018-06-03* TW sw calculator in a easy way ### 5/5 — Awesome Tool *2016-10-25* This tool is much better than the what you have to go through on TW. I takes out the human error of counting precise seconds. ...very accurate. --- *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 2026-08-20.*