# Sea Shell Identifier vs Periodic Play

Sea Shell Identifier and Periodic Play are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Sea Shell Identifier sells 3 in-app purchases, starting at $4.99 per 7 days and Periodic Play sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sea Shell Identifier ships an update every 3 weeks, Periodic Play every 2 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sea Shell Identifier | Periodic Play |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (169 ratings)](https://appshunter.io/ios/app/sea-shell-identifier-scanner/id6737782924/reviews)** | — |
| Number of ratings | **169** | — |
| Positive reviews | 13.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 60 MB | 5 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [APPMERGE TEKNOLOJI LIMITED SIRKETI](https://appshunter.io/developer/1822845284) | [S and S Forever Pty Ltd](https://appshunter.io/developer/6791149766) |

## What reviewers say

### Sea Shell Identifier

[App page](https://appshunter.io/ios/app/sea-shell-identifier-scanner/id6737782924)

Identify seashells instantly using AI. This app provides detailed biological insights and allows you to manage your personal collection of coastal finds with location tagging.

**Highlights:** AI photo identification, 1000+ species database, Expert biological insights, Personal collection management, Location tagging for finds, Detailed species profiles

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $12.99 | per year |
| Lifetime Premium | $9.99 | one-time |

**What reviewers like**

- 👍 Great design
- 🚀 Quick results
- 💡 Lots of interesting info

**What reviewers complain about**

- 😞 Inaccurate identification
- 😞 Does not work
- 😞 App closes down
- 😞 Expensive subscription
- 😞 Glitchy scans

**Reported bugs**

- App closes immediately when trying to take a picture
- App uses the first picture for subsequent scans instead of the newest
- App requires purchase again after one hour
- Camera function does not work
- Scans are glitchy

**Requested features**

- Allow trying before buying
- Lower subscription price
- Improve accuracy of shell identification
- Allow more free scans
- Fix app closing issue


### Periodic Play

[App page](https://appshunter.io/ios/app/periodic-play/id6791149764)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Player vs Bot | $1.99 | one-time |


## Frequently asked questions

### Is Sea Shell Identifier free?

Sea Shell Identifier is free to download, with in-app purchases available.

### Is Periodic Play free?

Periodic Play is free to download, with in-app purchases available.

### Do Sea Shell Identifier or Periodic Play have ads?

Neither Sea Shell Identifier nor Periodic Play shows ads.

### Which is updated more often, Sea Shell Identifier or Periodic Play?

Sea Shell Identifier ships an update every 3 weeks, and Periodic Play every 2 weeks. Most recently, Sea Shell Identifier was updated on November 4, 2026 and Periodic Play on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*