Comparison

Stack the States® vs Recall Trainer

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

Head to head
About

Stack the States®

Learn about the 50 US states through a fun and interactive game. Collect all states, unlock bonus games, and master capitals, shapes, flags, and more. This app makes geography engaging for all ages.

Highlights
  • Learn state capitals, shapes, and flags
  • Interactive drag-and-drop gameplay
  • Collect all 50 states on a personalized map
  • Unlock four bonus educational games
  • Hundreds of unique questions
  • Create multiple player profiles
Features
Read full description

Stack the States® makes learning about the 50 states fun! Watch the states actually come to life in this colorful and dynamic game! As you learn state capitals, shapes, geographic locations, flags and more, you can actually touch, move and drop the animated states anywhere on the screen. Carefully build a stack of states that reaches the checkered line to win each level. You earn a random state for every successfully completed level. All of your states appear on your own personalized map of the United States. Try to collect all 50! As you earn more states, you begin to unlock the four free bonus games: Map It, Pile Up, Puzzler and Capital Drop. Four games in one! HAVE FUN LEARNING ALL ABOUT THE 50 STATES: ▸ Capitals ▸ State shapes ▸ Abbreviations ▸ Bordering states ▸ Location on the map ▸ Nicknames ▸ Flags ...and more! FEATURES: ▸ Hundreds of unique questions ▸ Interactive map and 50 state flash cards ▸ Choose any of the 50 friendly-looking states as your avatar ▸ Create up to six player profiles ▸ Collect all 50 states and track your progress on a personalized map ▸ Earn FREE bonus games: Map It, Pile Up, Puzzler and Capital Drop ▸ High resolution pictures of famous US landmarks ▸ All games are powered by a realistic physics engine ▸ Fun sound effects and music ▸ iPhone 4 and new iPad Retina Display support ▸ Works on both iPhone and iPad - a universal app FIVE GAMES IN ONE: STACK THE STATES: Build tall piles with states and try to reach the checkered line. MAP IT: Tap the location of the selected state on the map. Try to complete the whole country. PILE UP: The states are piling up! Tap them quickly to get rid of them before they pile too high. PUZZLER: Sit back and relax as you slide the states around and put them together like a jigsaw puzzle. CAPITAL DROP: Match states with their capitals in this fast-paced bonus game. Don't let a state fall! Stack the States® is an educational app for all ages that's actually FUN to play. Try it now and enjoy five games for the price of one! PRIVACY DISCLOSURE Stack the States®: - Does not contain 3rd party ads. - Does not contain in-app purchases. - Does not contain integration with social networks. - Does not use 3rd party analytics / data collection tools. - Does include links to apps by Dan Russell-Pinson in the iTunes App Store (via LinkShare). For more information on our privacy policy please visit: http://dan-russell-pinson.com/privacy/

About

Recall Trainer

A card matching game designed for all ages that tests concentration and memory. It features multiple game modes, over 100 levels, and educational options for learning languages.

Highlights
  • Multiple game modes
  • Over 100 levels
  • Educational mode with language learning
  • Two-player mode
  • Add new card sets
  • Apple Game Center integration
Features
Read full description

Two cards face down. You flip them, remember where they are, and find the pair. Three seconds in, your visual and spatial memory is already at work. Recall Trainer is that simple challenge, built for learning and for training, from the first years to the grandparents. This complete edition includes everything, with no ads and no in-app purchases. WHO IS IT FOR? • Toddlers: card packs to recognize animals, food and faces, then letters, numbers and first words. A voice says what they flip, in English or in the language you choose. A real early-learning game for preschool. • Kids: learn to read by pairing a picture with its word, to count by linking a number with its name, to match a lowercase letter with its uppercase, to discover a foreign language pair by pair. • Adults and seniors: a brain training session of a few minutes a day. The big boards, up to 78 cards, demand attention, concentration and a working memory in good shape. WHAT MEMO TRAINS Visual memory, because you have to recognize the pictures. Spatial memory, because you have to remember where they are. Auditory memory, because every card can be read aloud. And concentration, because a 78-card board is never won while thinking about something else. FOUR WAYS TO PLAY • Classic: 25 levels, from 2 to 78 cards, in five difficulty bands. • Time Attack: start with 30 seconds; every pair adds time and every cleared board adds a bonus. • 2 Players: take turns on the same device, the perfect memory duel between a child and a parent, with no limit on games. • Educational: 25 ready-made activities to read, count, memorize or discover a language, plus a custom mode where you pick the image, text, voice and language of each side. TEN CARD PACKS, ALL INCLUDED Animals, food, music, sports, faces, emojis, numbers, words, lowercase and uppercase letters: more than 1,000 cards, available from the first launch. No ads, no in-app purchases, nothing to unlock: you pay once and that is all. ALSO • Card backs, decorations and layouts to unlock by playing. • Progress kept on all your devices with iCloud. • Available in 24 languages, on iPhone and iPad. Recall Trainer keeps its familiar wood-and-slate look in a refreshed interface. The edition you install on the family tablet and keep for years.

Screenshots

Stack the States®4 screens
Recall Trainer4 screens

Verdict

The call

The clearest difference is rating: Stack the States® at 4.4 against Recall Trainer's 3.8. Stack the States® also leads on price ($2.99 vs $8.99) and ratings volume (2.2K vs 5). Recall Trainer's advantage is update cadence (every 11 days vs every 3 months). 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

Stack the States® costs $2.99 and Recall Trainer $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Stack the States® holds the better App Store score, 4.4 against 3.8. That said, the two scores are not equally well evidenced: Stack the States® has 2.2K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 91% of Stack the States®'s written reviews are positive against 78% of Recall Trainer's.

UpkeepUpdate frequency

Stack the States® ships an update every 3 months, Recall Trainer every 11 days. Both last shipped on November 1, 2026.

Scorecard7 real differences · 4 level
Stack the States® versus Recall Trainer: the parameters behind the verdict, then further details
ParameterStack the States®Recall Trainer
Price$2.99 — better$8.99
Rating4.4 (2.2K ratings) — better3.8 (5 ratings)
Positive reviews90.8% of reviews — better78.1% of reviews
Number of ratings2.2K — better5
Update frequencyEvery 3 monthsEvery 11 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#5 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size99 MB211 MB
Age rating4+4+
DeveloperFreecloud Design, Inc.Clement Marty

Customer experience

Stack the States®

All ratings2,189 ratings
Positive85.6%
Neutral5.0%
Negative9.4%
Written reviews195 reviews
Positive90.8%
Neutral2.6%
Negative6.7%

Recall Trainer

All ratings5 ratings
Positive60.0%
Neutral20.0%
Negative20.0%
Written reviews64 reviews
Positive78.1%
Neutral9.4%
Negative12.5%

Bugs and requests

Stack the States®

Reported bugs

2 issues
  • Washington state mapping issue
  • Battery drain when app returns to home screen

Requested features

7 requests
  • Ability to view completed states again
  • Add more state facts/trivia
  • Include background photos related to states
  • Add a country-wide puzzle mode
  • Option to turn off state faces
Show 2 more
  • Add more mini-games
  • Ability to transfer progress between devices

Recall Trainer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Stack the States®

No in-app purchases

None

Recall Trainer

No in-app purchases

Questions

Is Stack the States® free?
Stack the States® costs $2.99, with no in-app purchases.
Is Recall Trainer free?
Recall Trainer costs $8.99, with no in-app purchases.
Which has better reviews, Stack the States® or Recall Trainer?
Stack the States® is rated higher. Stack the States® averages 4.4 out of 5 from 2.2K ratings, while Recall Trainer averages 3.8 from 5 ratings.
Do Stack the States® or Recall Trainer have ads?
Neither Stack the States® nor Recall Trainer shows ads.
Which is updated more often, Stack the States® or Recall Trainer?
Stack the States® ships an update every 3 months, and Recall Trainer every 11 days. Most recently, Stack the States® was updated on November 1, 2026 and Recall Trainer on November 1, 2026.

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