# Unit Converter Max — user reviews > 7 indexed App Store user reviews of Unit Converter Max by Rich Soft Co., Ltd, rated 5.00/5 from 26 ratings. - Source: https://appshunter.io/ios/app/unit-converter-max/id6747881604/reviews - App overview in markdown: https://appshunter.io/ios/app/unit-converter-max/id6747881604.md - Rating breakdown: 5★ 26 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 0 ## Most critical reviews (7 lowest-rated) ### 2/5 — App cannot do negative temperature conversion *2026-03-15* I have never seen a conversion calculator that could not do negative temperatures until now. **Developer response:** Please update the app to version 2.0, which includes major improvements, including support for negative temperatures and the calculator feature. ### 5/5 — 단위 변환 빠르게 나와요 *2026-07-11* 한눈에 여러개 볼 수 있어 좋아요 **Developer response:** 리뷰 남겨주셔서 감사합니다. 변환 결과를 빠르게 확인하고 여러 단위를 한눈에 비교할 수 있는 점을 좋게 봐주셔서 감사합니다. 앞으로도 더 편리하게 사용할 수 있도록 꾸준히 개선하겠습니다. ### 5/5 — 다른 앱 쓰다가 넘어 왔는데 빠르고 좋네요 *2026-05-11* 군더더기 없이 딱 필요한 단위 변환 기능만 있어서 사용하기 편합니다 **Developer response:** 안녕하세요. 소중한 리뷰 남겨주셔서 감사합니다. 필요한 기능만 간단하고 편하게 사용할 수 있도록 계속 개선해 나가겠습니다. 감사합니다. ### 5/5 — 쉬운 앱 직관적!! *2026-05-08* 복잡한 기능 없이 필요한 단위만 바로 변환할 수 있어서 너무 편해요. 앱 실행도 빠르고 화면도 깔끔해서 계산할 때 스트레스가 없습니다. **Developer response:** 좋은 말씀 정말 감사합니다. 계산할 때 복잡하게 느껴지지 않도록 최대한 단순하고 빠르게 만드는 데 신경 쓰고 있는데, 그 부분을 알아봐 주셔서 힘이 됩니다. 앞으로도 편하게 사용할 수 있도록 잘 다듬어가겠습니다. 감사합니다. ### 5/5 — App will now do negative temperature conversions *2026-03-18* Wednesday, March 18, 2026 App will now do negative temperature conversions –––––– I have never seen a conversion calculator that could not do negative temperatures until now. **Developer response:** Please update the app to version 2.0, which includes major improvements, including support for negative temperatures and the calculator feature. ### 5/5 — Standout feature *2026-02-26* Update: The QoL tweaks you’ve added are great. I applaud your resistance to moving to a subscription model (typically an instant cancellation for me), though I think there are exchange rate APIs that that remain uncapped and free (though I haven’t researched in a while). But currency conversion remains a “nice-to-have” improvement, and its lack doesn’t really detract from the value of this tool. Thanks for your attention to my requests! Original: Conversion apps are a dime a dozen on the App Store. I really like the result display on this one. Updating all appropriate target units simultaneously gets my answer quickly with fewer taps and swipes. Having said that, more tap reduction is better, and there a few tweaks that can improve the efficiency. 1) Get me to my favorites faster. Either top load the favorites in the home tab or start on the favorites tab. 2) Don’t preload the entry field with “1” (or preselect it so it’s immediately replaced by my first input). I dislike having to remember to backspace first. Some nice things to have: Reorder the categories (you’d have to reconcile this with favorite top-loading if implemented). Add currency conversion. Yes, I realize this is difficult because there are too many target units to display all of them on the result array, so you’d have to allow us to choose the target currencies we want, and you’d have to fetch the current conversion rates. But it would be nice! **Developer response:** Thanks so much for the detailed feedback—I really appreciate it! I’ve just released v1.7 with several improvements based on your suggestions: 1) Customizable Tabs: In Settings, you can now choose your default start tab and rearrange the tab order. 2) Keypad Persistence: I've added a toggle in Settings—if you turn it off, the input will always start clean every time you enter a unit detail screen. 3) Category Reordering: You can now also reorder your categories directly within the Settings menu. Regarding currency conversion: Real-time rates require an external API with ongoing costs, which would likely require a move to a subscription model. I’m holding off for now to keep things simple, but it’s definitely on my list to revisit. Please update and let me know what you think! If anything still feels clunky, I’m always here to listen. ### 5/5 — Standout feature *2026-01-23* Conversion apps are a dime a dozen on the App Store. I really like the result display on this one. Updating all appropriate target units simultaneously gets my answer quickly with fewer taps and swipes. Having said that, more tap reduction is better, and there a few tweaks that can improve the efficiency. 1) Get me to my favorites faster. Either top load the favorites in the home tab or start on the favorites tab. 2) Don’t preload the entry field with “1” (or preselect it so it’s immediately replaced by my first input). I dislike having to remember to backspace first. Some nice things to have: Reorder the categories (you’d have to reconcile this with favorite top-loading if implemented). Add currency conversion. Yes, I realize this is difficult because there are too many target units to display all of them on the result array, so you’d have to allow us to choose the target currencies we want, and you’d have to fetch the current conversion rates. But it would be nice! **Developer response:** Thanks so much for the detailed feedback—I really appreciate it! I’ve just released v1.7 with several improvements based on your suggestions: 1) Customizable Tabs: In Settings, you can now choose your default start tab and rearrange the tab order. 2) Keypad Persistence: I've added a toggle in Settings—if you turn it off, the input will always start clean every time you enter a unit detail screen. 3) Category Reordering: You can now also reorder your categories directly within the Settings menu. Regarding currency conversion: Real-time rates require an external API with ongoing costs, which would likely require a move to a subscription model. I’m holding off for now to keep things simple, but it’s definitely on my list to revisit. Please update and let me know what you think! If anything still feels clunky, I’m always here to listen. --- *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 2026-08-12.*