Comparison

Let's Go Lex! interactive tale vs Addition Math Trainer

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

Head to head
About

Let's Go Lex! interactive tale

An interactive story application for young children that encourages language learning through reading and listening in multiple languages. It features engaging characters, music, sound effects, and a puzzle at the end.

Highlights
  • Interactive storybook
  • Multilingual narration (English, Spanish, Chinese, Italian)
  • Read-a-loud options
  • Highlighted text
  • Engaging characters and animations
  • End-of-story puzzle
  • Sound effects and music
Features
Read full description

An interactive story application, you can choose to read and/or listen in any of these languages: English, Spanish, Chinese, Italian. Let's Go Lex! Join a cheery hippo in this bookish and interactive story application with highlighted text and read-a-loud options in English, Spanish, Chinese and Italian to encourage language learning. While reading and playing along, your child will encounter many cute characters and listen to a sweet melody or discover catchy sounds, like a bubble pop or a frog croak. An engaging little tale for 1-5 year olds with plenty of kid fun, and a puzzle with animation at the end. Story: Enjoy a musical ride down the river with Lex the hippo, and the frogs. Join this bizarre team of friends as they unleash their imagination and tackle trouble together. As the story unfolds, you will discover many surprising interactions and animations, and when the adventure comes to an end, don’t go away…stick around and play with a puzzle, there’s a little surprise for those who can complete it! Important: The automatic page turn on your device should remain disabled, pages should be turned manually. Access to the different languages is available from all pages by touching the ‘app menu’ symbol and subsequently the language icon inside this menu to choose the desired language. Have fun!

About

Addition Math Trainer

Features
Read full description

Discover a new way to master addition with our dynamic math trainer that turns learning into an exciting adventure. Enjoy fun, adaptive mini-games and intuitive handwriting input that make each practice session engaging and perfectly tailored to your skill level. Boost your abilities by practicing the following math skills: You can practice the following math skills: Add a number to a multiple of ten Add doubles Add three numbers up to 10 each Relate addition and subtraction Add a two-digit and a one-digit number Add two multiples of ten Add multiples of 10 or 100 Add two two-digit numbers Addition up to 100 Add two numbers up to three digits Add three numbers up to two digits each Add three numbers up to three digits each Add two numbers with four digits Complete the addition sentence up to three digits Balance addition equations up to two digits Balance addition equations up to three digits

Screenshots

Let's Go Lex! interactive tale4 screens
Addition Math Trainer4 screens

Verdict

The call

The clearest difference is iOS requirement: Addition Math Trainer at 12.0 against Let's Go Lex! interactive tale's 15.0. On price, update cadence, ads 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

Let's Go Lex! interactive tale costs $2.99 and Addition Math Trainer $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Let's Go Lex! interactive tale ships an update every 20 months, Addition Math Trainer every 35 months. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

Scorecard1 real difference · 8 level
Let's Go Lex! interactive tale versus Addition Math Trainer: the parameters behind the verdict, then further details
ParameterLet's Go Lex! interactive taleAddition Math Trainer
Price$2.99$2.99
Rating5.0 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 20 months — betterEvery 35 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size200 MB19 MB
Age rating4+4+
DeveloperMilena JahierSergey Malugin

In-app purchases

None

Let's Go Lex! interactive tale

No in-app purchases

None

Addition Math Trainer

No in-app purchases

Questions

Is Let's Go Lex! interactive tale free?
Let's Go Lex! interactive tale costs $2.99, with no in-app purchases.
Is Addition Math Trainer free?
Addition Math Trainer costs $2.99, with no in-app purchases.
Do Let's Go Lex! interactive tale or Addition Math Trainer have ads?
Neither Let's Go Lex! interactive tale nor Addition Math Trainer shows ads.
Which is updated more often, Let's Go Lex! interactive tale or Addition Math Trainer?
Let's Go Lex! interactive tale ships an update every 20 months, and Addition Math Trainer every 35 months. Most recently, Let's Go Lex! interactive tale was updated on November 2, 2026 and Addition Math Trainer on November 6, 2026.

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