Comparison

Codeword Unlimited + vs Hello M!

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

Head to head
About

Codeword Unlimited +

This app offers an unlimited supply of number-based word puzzles, similar to crosswords but without clues. Players decode numbers into letters to reveal hidden words, with customizable grid sizes, difficulty levels, and word lists in multiple languages.

Highlights
  • Unlimited codeword puzzles
  • Customizable grid size
  • Adjustable difficulty levels
  • Highlighting of same letters
  • Word validity checker
  • View word definitions
  • Multi-language word lists
Features
Currently charting
Read full description

Codeword Unlimited is an application to play the popular word game known as Codeword (also known as Cipher crosswords). For those unfamiliar with Codeword puzzles, they provide a grid of words, similar to a normal crossword, but with no clues, rather a few initially provided letters, and a number in each square in the gird to indicate its (as yet unknown) letter. All boxes with the same number must use the same letter. From that information and the few initially provided letters it is possible to work out which words will fit in the boxes. Hence you are decoding (or decyphering) the numbers into letters to reveal the hidden words. Usually all 26 letters of the alphabet are used in the codeword, although not always (and unused letters appear crossed out in the keyboard). Feature list: 1) Unlimited number of codewords!! They are created on-the-fly using the application's advanced generator engine and it's built-in word list. 2) The player decides the number of rows and columns (from 3 to 20). This allows the game to be suitable for all kinds of mobile-phones and tablets. 3) Difficultly level can be specified by the user, which determines the pool of words the generator will use. The larger the pool the greater the difficulty. There is even an early learner mode with a limited number of words, aimed at children and English language learners. The number of starting letters can also be specified. Higher scores can be obtained with more difficult codewords. 4) Selecting a square in the grid will highlight all places the same letter is used in that grid (i.e. has the same number to decipher). This is really handy and of course not possible when doing codewords in a magazine. 5) If a game is too difficult, the application provides two useful tools to help you (see below). 6) For any word in the grid for which all squares are assigned to letters, Codeword Unlimited will highlight if that word is NOT an allowed word in the word list it uses to generate its codewords. This helps you when you have mistakes in your current assignments (saving you lots of time and frustration!). 7) An on-screen keyboard means it is much easier and more comfortable to play. 8) The definition of a completed word can be viewed. This is useful if you do not know it, or you are learning a foreign language (internet connection required). 9) Choose the language of the word list, from a large range of downloadable dictionaries. 26 languages are currently available (see below). 10) Can be played in portrait or landscape mode. Just rotate your device and the display adjusts automatically. Other similar applications want you to pay for more Codewords, but this game provides you with endless puzzles, all for free!! Each game is assigned a difficulty level from 0 (easy) to 9 (very hard). The difficulty level is determined by the settings. Each difficulty level maintains the high scores (measured by fastest time to complete the game). The game displays the best 20 scores for each difficulty level. If the player is in difficulty, the application provides two very useful aids. (1) The game can provide another decoded letter. (2) The game can show you potential answers for an uncompleted word. The game uses the letters that you have already decoded and displays the matching words. Dictionaries available are English, French, German, Italian, Spanish, Portuguese, Russian, Arabic, Bulgarian, Croatian, Czech, Danish, Finnish, Greek, Hungarian, Indonesian, Polish, Norwegian, Romanian, Serbian(Latin), Serbian(Cyrillic), Slovak, Slovene, Swedish, Turkish, Ukrainian and more coming later

About

Hello M!

Engage your mind with a fun number game that challenges you to identify mathematical patterns. This daily exercise helps improve focus, memory, and problem-solving skills for users of all ages.

Highlights
  • Identify prime numbers, palindromes, squares, and cubes
  • Recognize arithmetic and geometric sequences
  • Quick and intuitive challenges
  • Progressive difficulty levels
  • Simple, clean design
  • Suitable for all ages
Read full description

Hello M! — Train Your Brain with Fun Math Patterns Studies show that keeping your brain active can help maintain mental sharpness and cognitive flexibility over time. Hello M! is a fun and engaging number game that challenges your brain to recognize and understand mathematical patterns. Designed for all ages, Hello M! turns mental math into an enjoyable daily exercise. Sharpen your thinking skills by identifying patterns such as Prime numbers, Palindromes, Squares, Cubes, Arithmetic sequences, and Geometric sequences. Each challenge is quick, intuitive, and rewarding—perfect for short play sessions or longer brain-training routines. Why Mental Math Matters? Mental math is more than just numbers. Regularly exercising your brain helps: - Improve focus and concentration - Strengthen memory - Enhance problem-solving skills - Support healthy brain function as you age Perfect for Everyone Whether you’re: - A student building number sense - An adult looking for a daily brain workout - Or someone who simply enjoys puzzles and patterns Hello M! adapts to your pace and keeps learning enjoyable. Features: - Simple, clean, and intuitive design - Pin the grid to start finding the patterns - Increase the difficulty levels as you progress - Suitable for beginners and advanced players Fun for kids, adults, and seniors Train Your Brain Daily Just a few minutes a day with Hello M! can help keep your mind active, sharp, and engaged. Challenge yourself, recognize patterns, and enjoy the satisfaction of mental mastery. Download Hello M! and make brain training a habit. By using this app, you agree to the Apple Standard End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Codeword Unlimited +4 screens
Hello M!4 screens

Verdict

The call

The clearest difference is price: Hello M! at Free against Codeword Unlimited +'s $4.99. Hello M! also leads on update cadence (every 2 days vs every 2 months) and rating (5.0 vs 4.7). Codeword Unlimited +'s advantage is ads (none vs shown) and ratings volume (55 vs 1). On in-app purchases, device support and iOS requirement 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

Hello M! is free to download; Codeword Unlimited + costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Hello M! holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Codeword Unlimited + has 55 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Codeword Unlimited + ships an update every 2 months, Hello M! every 2 days. The most recent releases landed on November 13, 2026 and October 30, 2026 respectively.

Scorecard7 real differences · 4 level
Codeword Unlimited + versus Hello M!: the parameters behind the verdict, then further details
ParameterCodeword Unlimited +Hello M!
Price$4.99Free — better
Rating4.7 (55 ratings)5.0 (1 ratings) — better
Positive reviews83.5% of reviews—
Number of ratings55 — better1
Update frequencyEvery 2 monthsEvery 2 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
Best chart rank#150 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size70 MB24 MB
Age rating4+4+
DeveloperHavosNitin Jain

Customer experience

Codeword Unlimited +

All ratings54 ratings
Positive94.4%
Neutral1.9%
Negative3.7%
Written reviews85 reviews
Positive83.5%
Neutral5.9%
Negative10.6%

Hello M!

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Codeword Unlimited +

Reported bugs

5 issues
  • Cannot open app after update
  • App not optimized for recent screens
  • Regularly rejects common words
  • Black screen on launch
  • Cannot erase a letter that is not in the right place

Requested features

10 requests
  • UK English dictionary option
  • Option to remove ads
  • Option to not have a timer or a pause button
  • New Game button on the menu bar
  • Backspace button
Show 5 more
  • Landscape mode for iPad
  • Pause button
  • Option to remove timer
  • No erase button
  • UK English words

Hello M!

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Codeword Unlimited +

No in-app purchases

None

Hello M!

No in-app purchases

Questions

Is Codeword Unlimited + free?
Codeword Unlimited + costs $4.99, with no in-app purchases.
Is Hello M! free?
Hello M! is free to download, with no in-app purchases.
Which has better reviews, Codeword Unlimited + or Hello M!?
Hello M! is rated higher. Codeword Unlimited + averages 4.7 out of 5 from 55 ratings, while Hello M! averages 5.0 from 1 ratings.
Do Codeword Unlimited + or Hello M! have ads?
Hello M! shows ads; Codeword Unlimited + does not.
Which is updated more often, Codeword Unlimited + or Hello M!?
Codeword Unlimited + ships an update every 2 months, and Hello M! every 2 days. Most recently, Codeword Unlimited + was updated on November 13, 2026 and Hello M! on October 30, 2026.

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