Unit Converter - Convert all subscription: cost, reviews, how to cancel

• App Store rating4.6★ from 13,482 ratings
• Cheapest subscription$2.49 per month
• Reviews mentioning billing, last 12 months9 of 150 reviews

On this page: what it costs, how to cancel, what reviewers say.

What the data says

• Free trial converts to a paid plan7 days free trial, then $14.99 per year

What Unit Converter - Convert all costs

Download: Free. Subscriptions start at $2.49 per month.

• Premium 1 monthRenews every month, no trial$2.49
• Unit Converter Premium - 1yRenews every year, no trial$8.99
• Get premium7 days free trial, then renews every year$14.99
• Premium 1 year7 days free trial, then renews every year$14.99
• Conversion Calculator Pro - 1y7 days free trial, then renews every year$19.99

Price changes

• Jun 26, 2026: Get premium went from $9.99 to $5.99 per year
• Jan 29, 2025: Premium 1 year went from $12.99 to $14.99 per year
• Feb 24, 2025: Premium 1 year went from $14.99 to $12.99 per year

How to cancel Unit Converter - Convert all

1. Open Settings on your iPhone and tap your name at the top.
2. Tap Subscriptions.
3. Select Unit Converter - Convert all (listed under a plan name such as Premium 1 month).
4. Tap Cancel Subscription and confirm. You keep access until the end of the paid period.

If the app is not in that list, it was not billed through Apple. Cancel it with the developer instead: support page.

Charged after cancelling or during a trial? Request a refund at reportaproblem.apple.com within 90 days.

What reviewers say

Reported bugs

Conversion calculations are sometimes inaccurate; Inability to enter decimal values in some conversions; Compatibility issues with newer devices.

Recent one-star reviews

很垃圾那么多常用换算竟然还要收费

To many addsThe adds make it unusable! Yes it’s free, yes the developers should earn something! But come on!!!!

NaN !?!? Paid version appears shown as "free"Currencies exchange rates are not always available and a "NaN" appears instead. Also, I bought the full version and "free" still appears in its icon. I wonder if these issues will be quickly resolved or if you will refund.

Recent five-star reviews

Very Handy ToolsGreat to have all these conversation tools at my fingertips! I often deal with European measurements for weight, length, sizes, areas and temperature. I find that tool very convenient and user friendly whenever I need to convert something from American measurements to European measurements. Good…

PreciseGood accuracy level is also a good

非常好我还需要货币换算，

About the developer

oWorld Software has published on the App Store since Jan 2, 2009: 19 app(s), 4 of them no longer in the store.

• Animal sounds - Images4.4★
• Firearm simulator : sounds, noises and images, photos FREE3.4★
• Quiz animal: Calls of the wild2.7★
• Don't push the red button: the famous game! You won't be able to stop !2.6★
• Money converter - Currency4.5★

Alternatives to Unit Converter - Convert all

• Unit Converter - Best Unit App4.8★
• Currency converter calculator!4.7★

Also similar: CalConvert: Currency Converter (4.6★), Convert Any Unit Lite (4.7★), Money converter - Currency (4.5★), My Currency Converter & Rates (4.9★)

Questions people ask

How much does Unit Converter - Convert all cost?

Download: Free. Subscriptions start at $2.49 per month.

How do I cancel Unit Converter - Convert all?

On your iPhone open Settings, tap your name, tap Subscriptions, select Unit Converter - Convert all and tap Cancel Subscription. You keep access until the end of the paid period.

Does Unit Converter - Convert all have a free trial?

Yes: Get premium offers a 7 days free trial, then $14.99 per year.

How much does the Conversion Calculator app cost?

The app is free to download and use, with ads displayed. Users can opt for 'Converter Premium' via an auto-renewable subscription to remove ads and unlock additional units. Subscription options include a 1-year renewal for $9.99 (with a 7-day free trial) or a 1-month renewal for $0.99.

Unit Converter - Convert all in one paragraph

Unit Converter - Convert all by oWorld Software is a Travel app for iPhone. Download: Free. Subscriptions start at $2.49 per month across 5 plan(s). App Store rating 4.6 from 13,482 ratings. 9 of 150 reviews in the last 12 months mention charges, subscriptions, refunds or cancelling (6%). The developer has 19 app(s) on the App Store, 4 no longer listed. Cancel through Settings › Subscriptions on the iPhone. Data verified Sep 8, 2026 by AppsLupa.

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