# Picture Pile — Sort pictures & help science.

> Sort pictures & help science. (iPhone/iPad app by IIASA.)

- Source: https://appshunter.io/ios/app/picture-pile/id926740054 (this page in markdown: same URL + `.md`)
- Developer: [IIASA](https://appshunter.io/developer/1101285210)
- Category: Games, Photo & Video, Card, Puzzle
- Price: Free
- Age rating: 17+
- Requires: iOS 12.0 · 75 MB
- Languages: American English
- Released: 2015-10-11
- Data updated: 2026-03-02
- User reviews in markdown: https://appshunter.io/ios/app/picture-pile/id926740054/reviews.md

## What is Picture Pile?

Sort Picture Piles to help science tackle the big problems for humanity!

All data collected is completely open and can be freely used by everyone!

www.picturepile.org

*** Disclaimer***

Apple is not a sponsor, nor is it involved in any way with the Picture Pile competitions.


## Version history (last 5 releases)

### 2.91 — 2025-04-29

Some bug fixes.

### 2.90 — 2025-03-11

Some bug fixes.

### 2.89 — 2025-03-07

Some ui bug fixes.

### 2.88 — 2025-02-26

Some small bug fixes.

### 2.87 — 2025-01-09

- UI updated
- Using new backend

## Apps similar to Picture Pile

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [FreeCell Classic :)](https://appshunter.io/ios/app/freecell-classic/id464658535) | 4.5 (3,415) | Free | Games |
| [Ultimate Preferans](https://appshunter.io/ios/app/ultimate-preferans/id6470801983) | — | Free | Games |
| [Spider Solitaire Games 2025](https://appshunter.io/ios/app/spider-solitaire-games-2025/id6477289266) | 5.0 (3) | Free | Games |
| [Spider Solitaire 2022++](https://appshunter.io/ios/app/spider-solitaire-2022/id1264065528) | 4.7 (43) | Free | Games |
| [Zachtronics Solitaire](https://appshunter.io/ios/app/zachtronics-solitaire/id6443640233) | 4.4 (42) | $4.99 | Games |
| [Pyramid Solitaire(Card Game)](https://appshunter.io/ios/app/pyramid-solitairecard-game/id1472298047) | 4.7 (388) | Free | Games |

## More apps by IIASA

- [FotoQuest Go](https://appshunter.io/ios/app/fotoquest-go/id1162111985)
- [GROW Observatory](https://appshunter.io/ios/app/grow-observatory/id1409694401)
- [FloodCitiSense](https://appshunter.io/ios/app/floodcitisense/id1414390549)
- [Natura Alert](https://appshunter.io/ios/app/natura-alert/id1437998439)
- [AgroTutor](https://appshunter.io/ios/app/agrotutor/id1457033299)

All apps by IIASA: https://appshunter.io/developer/1101285210

## Related topics

[iiasa](https://appshunter.io/ios/topics/iiasa)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-03-02.*