# 2000 Words vs Physics Zen

2000 Words and Physics Zen 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. 2000 Words sells 8 one-off in-app purchases and Physics Zen sells 6 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

2000 Words ships an update every 4 days, Physics Zen every 2 days. Both last shipped on October 29, 2026.

## The numbers

| Metric | 2000 Words | Physics Zen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/physics-zen-learn-and-practice/id6808595963/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 9 MB | 84 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Anton Popov](https://appshunter.io/developer/6773402224) | [Ivan Terekhin](https://appshunter.io/developer/888645337) |

## What reviewers say

### 2000 Words

[App page](https://appshunter.io/ios/app/2000-words-flashcards/id6773402222)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| German — all 2000 words | $1.99 | one-time |
| Spanish — all 2000 words | $1.99 | one-time |
| French — all 2000 words | $1.99 | one-time |
| Italian — all 2000 words | $1.99 | one-time |
| Bulgarian — all 2000 words | $1.99 | one-time |
| Russian — all 2000 words | $1.99 | one-time |
| Unlimited reading | $2.99 | one-time |
| All six languages | $6.99 | one-time |


### Physics Zen

[App page](https://appshunter.io/ios/app/physics-zen-learn-and-practice/id6808595963)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Physics Zen Weekly | $3.99 | per 7 days |
| Physics Zen Monthly | $6.99 | per month |
| Physics Zen Annual | $29.99 | per year |
| Physics Zen Lifetime | $24.99 | one-time |
| Physics Zen Lifetime | $29.99 | one-time |
| Physics Zen Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is 2000 Words free?

2000 Words is free to download, with in-app purchases available.

### Is Physics Zen free?

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

### Do 2000 Words or Physics Zen have ads?

Neither 2000 Words nor Physics Zen shows ads.

### Which is updated more often, 2000 Words or Physics Zen?

2000 Words ships an update every 4 days, and Physics Zen every 2 days. Most recently, 2000 Words was updated on October 29, 2026 and Physics Zen on October 29, 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.*