Comparison

Numzi vs UU

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Numzi

Easily convert numbers into memorable words and vice versa using a phonetic code. This tool helps you remember credit card numbers, phone numbers, dates, and more, making daily life simpler. It includes a comprehensive offline dictionary for enhanced memory recall.

Highlights
  • Number to word conversion
  • Word to number conversion
  • Offline dictionary
  • Mnemonic Major System
  • Peg System integration
  • Pronunciation included
Features
Read full description

Never forget a number. Numzi provides the easiest way to convert numbers into memorable words. Also, Numzi is bi-directional, so you can also use Numzi to convert your words back into your number. Remember credit card numbers, phone numbers, Social Security numbers, dates, or even remember your parking lot number. Numzi can help you remember the many numbers you deal with daily, which can make life easier. Numzi is fully portable word / number dictionary that includes word pronunciation. The word / number dictionary works offline and covers the English language with over 220,000 words and over 90,000 unique numbers. Numzi uses a phonetic code known as the mnemonic Major System to convert numbers into words. The mnemonic Major System method associates numbers 0 through 9 to a specific consonant sound. Using the mnemonic Major System, you can turn the number 735 into “camel" by inserting vowels among the consonants since we know K="7", M="3" and L="5", so “camel" --> K ae M ah L --> 735. If you choose to learn the mnemonic Major System, you can easily convert your Numzi-words in your head, or if you prefer, you can simply use the Numzi App to retrieve your number. The usefulness of the mnemonic Major System goes beyond the ability to remember numbers. You can also combine this method with the Peg System, to help memorize a numbered list, such as a grocery list or the presidents of the United States, by associating numbers with words easily visualized such as “shoe," “ray", or “home." The Numzi Peg Word list includes a Peg Word Story to help you remember the peg words. Combining the Major System with the corresponding phonetic Peg Word list system helps improve your memory using the same methods as the world memory champions. Numzi is a fun, handy word / number dictionary tool to help give your number-memory a boost. Never forget a number again!

About

UU

Easily create unique identifiers for your projects. This tool generates UUIDs on demand and can automatically copy them to your clipboard. It also features on-the-fly QR code generation and supports dark mode for a comfortable user experience.

Highlights
  • Generate UUID
  • Auto-generate on launch
  • Auto-copy to clipboard
  • Generate QR code
  • Dark Mode support
Features
Read full description

This is the easiest UUID generator you'll ever use. Easily generate a UUID and add it to your clipboard so you can easily paste it anywhere else on your phone! The features include: - Generate UUID - Option to auto-generate UUID on launch - Option to auto-copy UUID on generate - Generates QR code on the fly! - Supports Dark Mode

Screenshots

Numzi4 screens
UU2 screens

Verdict

The call

The clearest difference is rating: UU at 5.0 against Numzi's 4.4. UU also leads on review sentiment (100% vs 80%) and price ($0.99 vs $4.99). Numzi's advantage is update cadence (every 11 days vs every 21 months) and ratings volume (14 vs 2). On ads, in-app purchases, monetization model and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Numzi costs $4.99 and UU $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

UU holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Numzi has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 80% of Numzi's written reviews are positive against 100% of UU's.

UpkeepUpdate frequency

Numzi ships an update every 11 days, UU every 21 months. The most recent releases landed on October 22, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
Numzi versus UU: the parameters behind the verdict, then further details
ParameterNumziUU
Price$4.99$0.99 — better
Rating4.4 (14 ratings)5.0 (2 ratings) — better
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings14 — better2
Update frequencyEvery 11 days — betterEvery 21 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPodiPhone, iPod
Requires iOS8.0 — better14.0
Further details — not scored
Size13 MB7 MB
Age rating4+4+
DeveloperStephen ScottJP McGlone LLC

Customer experience

Numzi

All ratings13 ratings
Positive84.6%
Neutral0.0%
Negative15.4%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

UU

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Numzi

No in-app purchases

None

UU

No in-app purchases

Questions

Is Numzi free?
Numzi costs $4.99, with no in-app purchases.
Is UU free?
UU costs $0.99, with no in-app purchases.
Which has better reviews, Numzi or UU?
UU is rated higher. Numzi averages 4.4 out of 5 from 14 ratings, while UU averages 5.0 from 2 ratings.
Do Numzi or UU have ads?
Neither Numzi nor UU shows ads.
Which is updated more often, Numzi or UU?
Numzi ships an update every 11 days, and UU every 21 months. Most recently, Numzi was updated on October 22, 2026 and UU on October 7, 2026.

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