Comparison

Train + vs Rosie's Riddle

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

Head to head

Train +

Easy calculating game for kids

About

Train +

Features

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Kids really enjoy this, while they secretly practise addition. Please don't let them now, that they're learning and not playing! This will be our secret. As children develop, this app will be developed continuously. Currently easy addition, subtraction with a small reward on successful solution. Get prepared for rapidly growing functionality! This app doesn't include third-party analytics nor third-party advertising, the data isn't shared with any third parties and it's not collecting any user or device data for purposes beyond third-party analytics or third-party advertising.

About

Rosie's Riddle

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Rosie, the unicorn, is lost and needs to find a way back home through the clouds. Solve all cloud riddles to bring Rosie back home. This app trains your addition skills in a fun way, using number walls aka number pyramids. Have fun! :)

Screenshots

Train +1 screens

Rosie's Riddle4 screens

Verdict

The call

The clearest difference is in-app purchases: Train + at none against Rosie's Riddle's 1. Train + also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, update cadence and ads 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. Rosie's Riddle sells 1 one-off in-app purchase. Train + asks for nothing beyond the download.

UpkeepUpdate frequency

Train + ships an update every 4 months, Rosie's Riddle every 3 months. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 3 level

Train + versus Rosie's Riddle: the parameters behind the verdict, then further details
Parameter	Train +	Rosie's Riddle
Price	Free	Free
Update frequency	Every 4 months	Every 3 months — better
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod — better	iPhone
Requires iOS	13.0 — better	16.0
Further details — not scored
Size	1 MB	9 MB
Age rating	4+	4+
Developer	Marton Varga	Robert Heracles

In-app purchases

None

Train +

No in-app purchases

1 purchases

Rosie's Riddle

One-time1

Contribution$0.99

Questions

Is Train + free?

Train + is free to download, with no in-app purchases.

Is Rosie's Riddle free?

Rosie's Riddle is free to download, with in-app purchases available.

Do Train + or Rosie's Riddle have ads?

Neither Train + nor Rosie's Riddle shows ads.

Which is updated more often, Train + or Rosie's Riddle?

Train + ships an update every 4 months, and Rosie's Riddle every 3 months. Most recently, Train + was updated on October 7, 2026 and Rosie's Riddle on October 11, 2026.