# Ama vs ERESA（イーリサ）

The clearest difference is in-app purchases: Ama at none against ERESA（イーリサ）'s 2. Ama also leads on update cadence (every 2 months vs every 5 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. ERESA（イーリサ） sells 2 in-app purchases, starting at $29.99 per month. Ama asks for nothing beyond the download.

Ama ships an update every 2 months, ERESA（イーリサ） every 5 months. The most recent releases landed on September 4, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Ama | ERESA（イーリサ） |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 88.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | — |
| Size | 35 MB | 15 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [株式会社JACKALL](https://appshunter.io/developer/1542317547) | [ERESA Inc.](https://appshunter.io/developer/1620145482) |

## What reviewers say

### Ama

[App page](https://appshunter.io/ios/app/ama-jack/id1542317545)

Scan product barcodes or search by keyword to compare prices with Amazon and identify profitable resale opportunities. Visualize sales trends and jump to other e-commerce sites for faster research. List items directly on Amazon.

**Highlights:** Barcode scanning for price comparison, Keyword and model number search, Sales trend visualization (3-month forecast), Price and seller history graphs, One-tap jump to other e-commerce sites, List items directly on Amazon

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

**In-app purchases:** none


### ERESA（イーリサ）

[App page](https://appshunter.io/ios/app/eresa/id1620145480)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ERESA PRO（月額会員） | $29.99 | per month |
| ERESA PRO（年額会員） | $269.99 | per year |


## Frequently asked questions

### Is Ama free?

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

### Is ERESA（イーリサ） free?

ERESA（イーリサ） is free to download, with in-app purchases available.

### Do Ama or ERESA（イーリサ） have ads?

Neither Ama nor ERESA（イーリサ） shows ads.

### Which is updated more often, Ama or ERESA（イーリサ）?

Ama ships an update every 2 months, and ERESA（イーリサ） every 5 months. Most recently, Ama was updated on September 4, 2026 and ERESA（イーリサ） on September 20, 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.*