# Smart World vs Reef Tank Log

The clearest difference is in-app purchases: Smart World at none against Reef Tank Log's 3. Reef Tank Log's advantage is update cadence (every 5 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Reef Tank Log sells 3 in-app purchases, starting at $3.99 per month. Smart World asks for nothing beyond the download.

Smart World ships an update monthly, Reef Tank Log every 5 days. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Smart World | Reef Tank Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (253 ratings)](https://appshunter.io/ios/app/smart-world/id1460747930/reviews)** | — |
| Number of ratings | **253** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free | — |
| Size | 191 MB | 55 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vaari](https://appshunter.io/developer/1436458677) | [CODEENSIS LTD](https://appshunter.io/developer/859208704) |

## What reviewers say

### Smart World

[App page](https://appshunter.io/ios/app/smart-world/id1460747930)

Manage your entire home buying journey from pre-sale to post-transfer on a single platform. Track project progress, make down payments, and access other convenient features for a seamless experience.

**Highlights:** Pre-sale to after-sale management, Project progress tracking, Down payment processing, Convenient payment features, Single platform access

**Features:** Vision Pro support

**In-app purchases:** none


### Reef Tank Log

[App page](https://appshunter.io/ios/app/reef-tank-log-parameters/id6809114804)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Annual | $19.99 | per year |
| Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Smart World free?

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

### Is Reef Tank Log free?

Reef Tank Log is free to download, with in-app purchases available.

### Do Smart World or Reef Tank Log have ads?

Neither Smart World nor Reef Tank Log shows ads.

### Which is updated more often, Smart World or Reef Tank Log?

Smart World ships an update monthly, and Reef Tank Log every 5 days. Most recently, Smart World was updated on October 24, 2026 and Reef Tank Log on October 18, 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.*