Doublets vs Card Pile Flow
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Doublets
A word puzzle game where you transform one word into another by changing one letter at a time. Each step must result in a valid dictionary word, following the rules of the classic word ladder game.
- Word ladder gameplay
- Change one letter at a time
- Valid dictionary words
- Classic word puzzle
- Single-player game
Read full descriptionHide full description
Doublets (also known as word ladder) is a word puzzle game invented by Lewis Carroll where the objective is to turn one dictionary word into another by changing one letter at a time. At each step, one letter may be changed, and the resulting word must be a valid dictionary word. Terms of Service: https://virgilsoftware.com/terms-and-conditions
Card Pile Flow
Read full descriptionHide full description
Card Pile Flow is a relaxing yet strategic puzzle game that combines scattered 3D card picking, a moving conveyor belt, and layered matching slots. Tap cards from the pile below and place them onto the moving belt. As cards loop across the screen, match them to the correct slot column before the belt fills up. Clear the active bottom slots to unlock the layers above and complete the level. Simple to play but full of smart decisions, every stage challenges you to manage space, timing, and matching order. Features: -Tap scattered 3D cards and send them onto the belt -Watch cards move on a looping conveyor system -Match cards into the correct slot columns automatically -Clear layered slot stacks from bottom to top -Avoid belt overload and plan every move carefully -Enjoy increasing challenge through new categories, deeper stacks, and faster flow
Screenshots
Verdict
The clearest difference is in-app purchases: Card Pile Flow at none against Doublets's 3. Card Pile Flow also leads on update cadence (every 2 weeks vs every 9 months) and iOS requirement (13.0 vs 17.0). Doublets's advantage is ads (none vs shown). On price 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
Both are free to download. Doublets sells 3 in-app purchases, starting at $0.99 per month. Card Pile Flow asks for nothing beyond the download.
Doublets ships an update every 9 months, Card Pile Flow every 2 weeks. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.
| Parameter | Doublets | Card Pile Flow |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 9 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 230 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas DiZoglio | 文晚 鲁 |
In-app purchases
Doublets
- Doublets Monthly Subscription$0.991 Month
- Doublets Yearly Subscription$9.991 Year
- Doublets Free DownloadFree
Card Pile Flow
No in-app purchases









