Comparison

TENS! vs Calculator 2

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

Head to head
About

TENS!

Strategically place dice to make ten in this engaging puzzle adventure. Overcome obstacles and use special tiles and boosters to clear the board, beat high scores, and boost your IQ. Enjoy dynamic gameplay across diverse levels with exciting challenges.

Highlights
  • Strategic dice placement to make ten
  • Dynamic gameplay with level objectives
  • Diverse levels with various challenges
  • Special tiles like bombs
  • Powerful boosters to enhance strategy
  • Obstacles and blocker tiles
Features
Read full description

Get ready for the ultimate challenge! Journey through diverse levels, work towards objectives that keep you engaged and entertained as you strategically place dice to make ten. Crate blocks and obstacles won’t make this easy so use special tiles including bombs, and powerful boosters to clear the board. Use your intellect and efficiency to make combos, unlock new boosters, and beat high scores! The satisfying feeling of clearing a board makes Tens! the ultimate puzzle adventure to challenge your mind. Are you prepared to work smarter, not harder and give your IQ a boost? Features: Dynamic Gameplay: Match numbered tiles strategically to reach the sum of ten, each level offers a new twist through objectives. Diverse Levels: Explore a variety of stages with various challenges and objectives to keep you engaged. Special Tiles & Boosters: Encounter unique tiles such as bombs and utilise useful abilities to enhance your strategy. Exciting challenges: Face off against tricky obstacles like blocker tiles, mastering strategic tile placement.

About

Calculator 2

Embark on a math-fueled adventure to defeat a digital virus. Utilize a special calculator and a witty assistant to solve numerical puzzles, manipulate numbers, and even use portals to save the world. This game transforms a standard calculator into an interactive puzzle experience.

Highlights
  • Numerical puzzle solving
  • Number manipulation
  • Interactive calculator gameplay
  • Digital assistant
  • Portal mechanics
  • Relaxing LCD display
Features
Read full description

The much anticipated sequel returns to Calculator: The Game is here! The world has been taken over by the Clicky virus and only one person can stop it ... that's you ... you're the one person. The only person. Use you're trusty new state of the art SM-1K calculator and Dot, your quick witted assistant, to track down Clicky and save the world! In Calculator 2: The Game you'll add, multiply, delete, reverse, convert, and turn numbers into letters ... did we mention there are portals? Oh yeah, there are portals to transport numbers through, no big deal. Sure, you've used calculators before, but have you ever "played" a calculator? Calculator 2: The Game features: - LCD DISPLAY for relaxing numerical puzzle time - COMFORTABLE BUTTONS designed for modern gameplay - DOT, THE ASSISTANT who will help you catch Clicky - APPROVED for use in Calculator: The Game * Batteries not included. Just kidding, plug your phone in if you're running low on power ;)

Screenshots

TENS!4 screens
Calculator 24 screens

Verdict

The call

The clearest difference is ads: Calculator 2 at none against TENS!'s shown. Calculator 2 also leads on update cadence (every 4 days vs every 4 months) and iOS requirement (9.0 vs 15.0). TENS!'s advantage is review sentiment (61% vs 52%). On price, rating, ratings volume and in-app purchases 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

Both are free to download. TENS! sells 10 one-off in-app purchases and Calculator 2 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Calculator 2 holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 20K and 9.1K respectively. Written reviews complicate that: 61% of TENS!'s written reviews are positive against 52% of Calculator 2's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

TENS! ships an update every 4 months, Calculator 2 every 4 days. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

Scorecard4 real differences · 6 level
TENS! versus Calculator 2: the parameters behind the verdict, then further details
ParameterTENS!Calculator 2
PriceFreeFree
Rating4.5 (20K ratings)4.7 (9.1K ratings) — better
Positive reviews61.3% of reviews — better51.8% of reviews
Number of ratings20K — better9.1K
Update frequencyEvery 4 monthsEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.09.0 — better
Further details — not scored
Size270 MB254 MB
Age rating12+4+
DeveloperKwalee LtdSimple Machine, LLC

Customer experience

TENS!

All ratings20,156 ratings
Positive87.9%
Neutral5.5%
Negative6.5%
Written reviews783 reviews
Positive61.3%
Neutral8.4%
Negative30.3%

Calculator 2

All ratings9,039 ratings
Positive93.5%
Neutral3.4%
Negative3.1%
Written reviews170 reviews
Positive51.8%
Neutral16.5%
Negative31.8%

User reviews

TENS!

From 20K App Store ratings

What we love

  • 🚀 Addictive gameplay
  • 👍 Challenging but fun
  • 💡 Helpful for improving math skills
  • 🤩 Great time waster

Room to improve

  • 🤬 Too many ads, even after paying to remove them
  • 🐛 Frequent crashes and technical issues
  • 😡 Misleading in-app purchases
  • 🙄 Repetitive and boring after a while

Calculator 2

From 9.1K App Store ratings

What we love

  • 👍 Great game concept
  • 🤩 Charming and engaging gameplay
  • 💡 Unique math-based puzzles
  • 🎨 Cute art style and visuals

Room to improve

  • 🐛 Frequent crashes and bugs
  • 🙄 Too many intrusive ads
  • 🔍 Unresponsive or stuck buttons
  • 🤯 Progress loss/reset issues

Bugs and requests

TENS!

Reported bugs

3 issues
  • Game freezes or resets progress
  • Coins/progress disappearing after updates
  • Rotation feature not working as expected

Requested features

3 requests
  • More adventure levels
  • Ability to rotate pieces without watching ads
  • Improved save/progress tracking

Calculator 2

Reported bugs

4 issues
  • Level 185 not registering correct solution
  • Level 199 having unintended mechanics
  • Buttons getting stuck and unresponsive
  • Inconsistent progress saving

Requested features

4 requests
  • Ability to choose which number to use hints on
  • Option to change button/UI colors
  • Undo/rewind functionality
  • Better scaling and layout for larger screens

In-app purchases

10 purchases

TENS!

One-time10
  • Offer coin pile$0.49
  • Life Pack 1$0.99
  • Small Coin Pack$0.99
Show 7 more
  • Remove Adverts$1.99
  • Expert Mode$1.99
  • Unlock Expert Mode$2.99
  • Remove Ads Discount$2.99
  • More Lives$2.99
  • No Ads + Expert Mode$2.99
  • Extra Lives$4.99
1 purchases

Calculator 2

One-time1
  • Remove Ads$2.99

Questions

Is TENS! free?
TENS! is free to download, with in-app purchases available.
Is Calculator 2 free?
Calculator 2 is free to download, with in-app purchases available.
Which has better reviews, TENS! or Calculator 2?
Calculator 2 is rated higher. TENS! averages 4.5 out of 5 from 20K ratings, while Calculator 2 averages 4.7 from 9.1K ratings.
Do TENS! or Calculator 2 have ads?
TENS! shows ads; Calculator 2 does not.
Which is updated more often, TENS! or Calculator 2?
TENS! ships an update every 4 months, and Calculator 2 every 4 days. Most recently, TENS! was updated on November 10, 2026 and Calculator 2 on November 6, 2026.

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