# Polyidiom vs Flagsay

The clearest difference is update cadence: Polyidiom at every 3 days against Flagsay's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Polyidiom sells 3 in-app purchases, starting at $1.99 per month and Flagsay sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Polyidiom ships an update every 3 days, Flagsay every 3 months. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Polyidiom | Flagsay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/polyidiom-learn-idiomslang/id6746371097/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 months |
| Monetization | Freemium | — |
| Size | 43 MB | 18 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [亲强 吴](https://appshunter.io/developer/1700348139) | [Shanghai Sunrise Chime Technology Co., Ltd.](https://appshunter.io/developer/1809164286) |

## What reviewers say

### Polyidiom

[App page](https://appshunter.io/ios/app/polyidiom-learn-idiomslang/id6746371097)

Master idioms and slang across multiple languages with engaging illustrations and smart learning algorithms. Track your progress, save favorites, and explore cultural backgrounds. Offline access makes learning convenient anytime, anywhere.

**Highlights:** Card-based learning with definitions and history, Detailed explanations of cultural backgrounds, Save favorite idioms for review, Track learning progress and statistics, Support for six languages, Cartoon illustrations for enhanced memory, Offline learning support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PolyIdiom Premium (Monthly) | $1.99 | per month |
| PolyIdiom Premium (Yearly) | $7.99 | per year |
| Polyidiom Lifetime Membership | $9.99 | one-time |


### Flagsay

[App page](https://appshunter.io/ios/app/flagsay-everything-speaks/id6749497690)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CaiQi Talk Pro Monthly Subscription | $2.99 | per month |
| CaiQi Talk Pro Yearly Subscription | $29.99 | per year |


## Frequently asked questions

### Is Polyidiom free?

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

### Is Flagsay free?

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

### Do Polyidiom or Flagsay have ads?

Neither Polyidiom nor Flagsay shows ads.

### Which is updated more often, Polyidiom or Flagsay?

Polyidiom ships an update every 3 days, and Flagsay every 3 months. Most recently, Polyidiom was updated on October 8, 2026 and Flagsay on October 5, 2026.

---

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