Review Insights · App Store
Unit Converter - Best Unit App
Alan Mrvica · 183,302 ratings · ★ 4.8
4.8
★★★★★
183,302 ratings
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Top complaints - extracted from 49 negative reviews
Recurring phrases mined from 1-2★ reviews. The bigger the percentage, the more users have the same problem. Fix the top 2-3 in your version and you have product-market fit on day one.
1
"version"
10 negative reviews mention this · 20% of all complaints
★★★★★ "Greed. Have used this app for years as a free app. Not a necessity but a convenience. Now they want $25.00/year. I certainly don’t need it that badly as there are still free conversion apps out there." - doctom80
2
"bottom"
10 negative reviews mention this · 20% of all complaints
★★★★★ "Used to be my go-to unit conversion app. I’ve used this app forever, but regrettably something has changed recently and the tiny little ads at the bottom are suddenly full of smut. It looks like naked woman and dirty pictures. It’s disgusting. I’m not sure how much control they ha…" - CMOS4US
3
"screen"
10 negative reviews mention this · 20% of all complaints
★★★★★ "No longer for iPhones.. The app runs ads across the screen bottom hiding half the number pad. It also divides your screen so half is hidden unless you buy the Premium version." - Taocats
4
"years"
8 negative reviews mention this · 16% of all complaints
★★★★★ "Whatever you changed ruined the app.. I had used this converter app for years, but now you can't use decimals and the “0” button has disappeared. If this all to make a buck, well, I'm not a sucker. In the past half hour, I've found an app that offers the functionality you used …" - Belinsey
5
"free"
8 negative reviews mention this · 16% of all complaints
★★★★★ "Greed. Have used this app for years as a free app. Not a necessity but a convenience. Now they want $25.00/year. I certainly don’t need it that badly as there are still free conversion apps out there." - doctom80
6
"premium"
7 negative reviews mention this · 14% of all complaints
★★★★★ "No longer for iPhones.. The app runs ads across the screen bottom hiding half the number pad. It also divides your screen so half is hidden unless you buy the Premium version." - Taocats
7
"converter"
6 negative reviews mention this · 12% of all complaints
★★★★★ "Whatever you changed ruined the app.. I had used this converter app for years, but now you can't use decimals and the “0” button has disappeared. If this all to make a buck, well, I'm not a sucker. In the past half hour, I've found an app that offers the functionality you used …" - Belinsey
8
"deleted"
6 negative reviews mention this · 12% of all complaints
★★★★★ "Non-paid users don’t bother!. Only useful if you pay. Downloaded and immediately deleted due to this." - 72DiscoBaby
9
"conversion"
5 negative reviews mention this · 10% of all complaints
★★★★★ "Greed. Have used this app for years as a free app. Not a necessity but a convenience. Now they want $25.00/year. I certainly don’t need it that badly as there are still free conversion apps out there." - doctom80
10
"useless"
5 negative reviews mention this · 10% of all complaints
★★★★★ "Used to be great. I used to use this app every time I need a conversion, from weight to temperature to currency. Recently a design change made the app useless as I cannot type a 0, 1,2 or 3 on the keyboard as those keys are now covered by ads. Just stop offe…" - kojobg
11
"convert"
5 negative reviews mention this · 10% of all complaints
★★★★★ "Whatever you changed ruined the app.. I had used this converter app for years, but now you can't use decimals and the “0” button has disappeared. If this all to make a buck, well, I'm not a sucker. In the past half hour, I've found an app that offers the functionality you used …" - Belinsey
12
"number"
5 negative reviews mention this · 10% of all complaints
★★★★★ "No longer for iPhones.. The app runs ads across the screen bottom hiding half the number pad. It also divides your screen so half is hidden unless you buy the Premium version." - Taocats
📋 All 49 negative reviews
Every 1-2★ review we fetched. Use the copy button to grab them all for your own analysis (paste into ChatGPT/Claude with a prompt like "summarize core user problems, group by theme, ignore bugs, focus on missing features").
Whatever you changed ruined the app.
I had used this converter app for years, but now you can't use decimals and the “0” button has disappeared. If this all to make a buck, well, I'm not a sucker. In the past half hour, I've found an app that offers the functionality you used to offer, so I'm dumping your app. Bye-bye!
Greed
Have used this app for years as a free app. Not a necessity but a convenience. Now they want $25.00/year. I certainly don’t need it that badly as there are still free conversion apps out there.
Used to be great
I used to use this app every time I need a conversion, from weight to temperature to currency. Recently a design change made the app useless as I cannot type a 0, 1,2 or 3 on the keyboard as those keys are now covered by ads. Just stop offering a free version if you must. Will look for a new app.
Ads make it useless. Cost too much.
I used to like this app but now it’s hardly useable with ads blocking things in the way. I would subscribe to it but having to pay monthly or yearly is just ridiculous. It should just be a one time subscription fee. Many amps are just a few dollars. This one is outrageously priced. And if you use the free version, it’s hardly functional since the ads get in the way of everything. I feel that the developer here is just overly greedy. Wish they would make it reasonable. Useable for free. And a fair price for a subscription.
Distance CONVERTER ONLY DOES SQUARE UNITS ONLY
The old units converter allowed for a lot more options this only allows for squared units only. Maybe it’s operator error and unwilling to pay for the app but I want to convert linear miles to klicks (kilometers) NOT SQUARE MILES TO SQUARE KILOMETERS AND VISA VERSA.
Bad ads
I got a flag containing naked women as an advertisement
Used to be my go-to unit conversion app
I’ve used this app forever, but regrettably something has changed recently and the tiny little ads at the bottom are suddenly full of smut. It looks like naked woman and dirty pictures. It’s disgusting. I’m not sure how much control they have over the ads, but obviously not enough.
Porn … really???
First, I tried to convert Celsius to Fahrenheit. All it did was convert Celsius to Celsius. And then low behold on the bottom unit converter is posting porn ads.!!!! disgusting what a scam!
No longer for iPhones.
The app runs ads across the screen bottom hiding half the number pad. It also divides your screen so half is hidden unless you buy the Premium version.
Privacy invasion
Not worth downloading for free if they just going to sell my location data to whoever wants to buy it
Z
Terrible All surveys. Can’t get to what I want for what they want.
Disappointing
I have been using this app for the last years. I understand having to implement paywalls to keep it going, but doing adds too is overkill. Having to watch an add to get into settings is stupid. You dont take basic free features and turn them into pay to use. Want people to spend $26 on your app annually? Then implement new mechanics behind a paywall. Also, people don’t want to see naked women while trying to see what temp their oven should be.
Deleting this app, I would prefer to convert via google. I regret updating the app last week.
Deleting this app, I would prefer to convert via google. I regret updating the app last week.
Wants you to purchase
The app wants you to purchase and has improper ads
Remove Sexual adds
Sexual adds is uncalled for remove please
Pay to use now
Use to get torque values and now they want you to pay for something that use to be free what a rip off
New version sucks will have to find another app
Why did you make it a premium for functionality?
New version not functional
Ads pop up randomly and then you are stuck and have to force quit the app.
Ads now cover parts of the app. For example, in Temperature conversion section the ad at the bottom of the screen covers over the ZERO. It is IMPOSSIBLE to enter a zero.
Ads now cover parts of the app. For example, in Temperature conversion section the ad at the bottom of the screen covers over the ZERO. It is IMPOSSIBLE to enter a zero.
Ads
Inappropriate ads
Non-paid users don’t bother!
Only useful if you pay. Downloaded and immediately deleted due to this.
Non functional unless you pay
I use this app on a limited basis but used to really love it. They put an ad on the screen, which is fine, but it blocks the number pad so the app is useless unless you pay to use it. Unfortunately, I have to delete it now.
Was Great, but…
This used to be my favorite converter app but then they started having inappropriate ads at the bottom. I have deleted this app and will never use it again.
I can no longer this app.
I can no longer this app.
Unusable w/ads
Ads are so intrusive it can’t be used. Deleted.
Go back & fix it!
I can't get to the decimal key because your pop-up ads block it. And there's no way of stopping them.
Poor app everything purchased
Hard to navigate, change units and currency changer rate need premium paid features better use Google!
Not screening Ads
The ad strip at the bottom has porn. Really is a great converter but they need to screen their ads better
Another app overwhelmed with ads
Was perfect, now it’s full of ads that pop up mid calculation. They filled it with terrible ads to push you to the paid version. Deleted.
Good, but
Ads block keyboard.
Ads cover the keypad
Ads cover the keypad- not a problem unless you need to use the 0.
Missing number key
Cannot access the bottle row of the keyboard
iPhone freak out
The ad at the bottom of the screen, I decided to view it and the cancel proceed button just kept flashing like a strobe light and locked up My iPhone. I’m gonna delete the app if this doesn’t get fixed.
Free version is unusable
Forces you to watch a 20 second ad every time to try to change settings. I just wanted to adjust the number of significant figures.
Ads are pornographic
The ads on this app are disgusting and disturbing.
It’s Trash Now
As others have mentioned now there is a soft core porn Temu bar at the bottom. Can’t even access the keypad to do a conversion and can’t close the ad. It would seem they want you to pay for the premium ad free version or go pound sand. Very unfortunate. Used it for many years.
It’s become trash
They are pushing for paid and their trash ads block the screen. This app has become useless trash.
Porographic
I open the app cause I use it with my grandkids for doing conversions and there’s pornographic images on the bottom not acceptable used to be a nice app to use
I gave up on this
A couple of weeks ago, this app became buggy. The “All Clear” button would not work. Answer as a result, larger numbers kept being entered. I deleted the app and re-downloaded it. This time the number zero (0) could no longer be seen on the screen because of an ad prompting to buy the premium version. This app has become useless to me. I deleted it.
What happened?
I loved this app and used it regularly. Since the last Apple update 26.2, it is no longer functioning. The currency no longer converts. Please fix and I will rate it again!
Pornographic ads
I have used and enjoyed this app for years. It’s been fantastic. Unfortunately, I had to uninstall it today after seeing pornographic temu ads on multiple occasions. I’m all about a developer earning revenue from their work, but there has to be some control over what kind of ad content is presented to the user. I’ll happily reinstall this when this is fixed.
Imposed game blocking access to the app
I’m ot able to get out of a game popping up that I’m not interested in. That violates my choices and I don’t appreciate it
What happened to this app??
Used to be great, but they’ve ruined it. App is trash now.
Revenue is important, however…
I’ve used this app for years, but a recent update restricting the simple ability to use an alphabet radial to the premium version is genuinely disappointing. It should not be considered a premium feature to press a “B” when trying to convert dollars to pounds. Do better.
Vulgar ad
There is a predatory ad at the bottom of my working screen, I think it’s musks Xtwitter- that is mildly pornographic, but Definitely predatory against females
Gross Ads
Just deleted. I Have used for years, however gross ads for Temu started showing up. Bye bye.
Ads a problem
Was great until the app starting getting bombarded with inappropriate Temu ads.
None
UC
Porn ads 🙄
5 stars for what the app is supposed to do. 2 stars for showing me porn when I want to convert miles to km. Check your ads.
Now unusable
After using this for years, an add for upgrade to Premium has been inserted that prevents use of the app.
Screen
The app keeps glitching. Sometimes you can’t select what you want inside of a category to compare it to something else. But when it works it great.
Subscribe to be functional
This used to be a 5 star app but it just recently changed so that it’s unusable unless you subscribe. It’s one thing to have ads occasionally but the way it is now there’s a giant banner in the middle of the screen and there’s no zero button. Your unit converter app isn’t very accurate if it doesn’t support the use of zero
Sentiment summary
97%
Positive (4-5★)
2%
Neutral (3★)
2%
Negative (1-2★)